CN117110705A - Electric meters, power data monitoring methods and distribution cabinets - Google Patents

Abstract

The application provides an ammeter, an electric power data monitoring method and a power distribution cabinet, wherein the ammeter comprises the following components: the host module is provided with a power connection part, a communication connection part and a three-phase voltage connection part; a plurality of multi-loop metering modules, each configured to meter a single-phase power supply or a multi-phase power supply, and the multi-loop metering modules metering the single-phase power supply are arbitrarily combined with the multi-loop metering modules metering the multi-phase power supply; the multi-loop metering modules are sequentially connected in series, and the multi-loop metering modules positioned at the head end of the series connection are connected with the power connection part, the communication connection part and the three-phase voltage connection part. According to the application, the metering single-phase power supply and the multi-loop metering modules of the multi-phase unit are sequentially connected in series, and the power supply and communication of the multi-loop metering modules can be realized by adopting one bus, so that the wiring of the ammeter is simplified, and the construction cost of the ammeter is reduced.

Description

Electric meters, power data monitoring methods and distribution cabinets

Technical field

This application relates to the technical field of electrical equipment, specifically an electric meter, a power data monitoring method and a power distribution cabinet.

Background technique

Currently, in the field of power applications, it is necessary to monitor the power data of electrical equipment in order to monitor the operating status of various equipment in the power system in real time. However, existing power monitoring technology requires the use of independent single-phase electricity meters or three-phase electricity meters for monitoring. Each electricity meter needs to be connected to an independent power signal for power supply and an independent communication line to obtain meter data, which will lead to Problems include complex product wiring and high construction costs.

Contents of the invention

This application provides an electric meter, a power data monitoring method and a distribution cabinet, aiming to solve the current technical problems of complex wiring of multiple electric meters and high construction costs.

In the first aspect, this application provides an electric meter including:

Host module, the host module has a power wiring part, a communication wiring part and a three-phase voltage wiring part;

Multiple multi-circuit metering modules, each multi-circuit metering module is configured to measure single-phase power supply or multi-phase power supply, and the multi-circuit metering module for measuring single-phase power supply and the multi-circuit metering module for measuring multi-phase power supply can be combined in any combination;

Among them, multiple multi-circuit metering modules are connected in series in sequence, and the multi-circuit metering module located at the head end of the series is connected to the power wiring part, the communication wiring part and the three-phase voltage wiring part, so that each multi-circuit metering module receives power indirectly or directly signals, communication signals and three-phase voltage signals.

In some embodiments, the plurality of multi-circuit metering modules includes a plurality of single-phase multi-circuit metering modules;

The single-phase multi-circuit metering module is configured to measure single-phase power, and multiple single-phase multi-circuit metering modules are connected in series.

In some embodiments, the plurality of multi-circuit metering modules further includes at least one multi-phase multi-circuit metering module;

The multi-phase multi-circuit metering module is configured to measure multi-phase power, and the multi-phase multi-circuit metering module is connected in series between any adjacent single-phase multi-circuit metering modules.

In some embodiments, the plurality of multi-circuit metering modules includes a plurality of multi-phase multi-circuit metering modules;

The multi-phase multi-circuit metering module is configured to measure multi-phase power, and a plurality of multi-phase multi-circuit metering modules are connected in series.

In some embodiments, the plurality of multi-circuit metering modules further includes at least one single-phase multi-circuit metering module;

The single-phase multi-circuit metering module is configured to measure single-phase power, and the single-phase multi-circuit metering module is connected in series between any adjacent multi-phase multi-circuit metering modules.

In some embodiments, multiple multi-loop metering modules are arranged in an array, and multi-loop metering modules in the same row are connected in series;

The electric meter also includes a transfer module and a transfer cable. The transfer module is connected to the multi-circuit metering module in the same row and at the end of the arrangement;

One end of the transfer cable is connected to the transfer module in the previous row, and the other end is connected to the multi-circuit metering module in the next row and the first end of the arrangement.

In some embodiments, the switching module has a sixth interface and a seventh interface;

Third buckles are provided on opposite sides of the sixth interface; and/or

Third buckles are provided on opposite sides of the seventh interface.

In some embodiments, the single-phase multi-circuit metering module has a second interface and a fourth interface, and the second interface and the fourth interface are respectively located on opposite sides of the single-phase multi-circuit metering module;

First card slots are provided on opposite sides of the second interface, and first buckles are provided on opposite sides of the fourth interface;

The first buckle corresponds to the first buckle, and the first buckle between adjacent single-phase multi-circuit metering modules cooperates with the first buckle.

In some embodiments, the multi-phase multi-circuit metering module has a third interface and a fifth interface, and the third interface and the fifth interface are respectively located on opposite sides of the multi-phase multi-circuit metering module;

Second card slots are provided on opposite sides of the third interface, and second buckles are provided on opposite sides of the fifth interface;

The second buckle corresponds to the first buckle, and the second buckle corresponds to the first buckle.

In some embodiments, the multi-circuit metering module has through-holes and mounting chutes;

The threading hole extends along the first direction, the mounting chute extends along the second direction, and the first direction and the second direction are perpendicular to each other.

In some embodiments, a clamping block that telescopes along the first direction and a spring that extends along the first direction are installed in the installation chute;

One end of the spring is in contact with the clamping block, and the other end is in contact with the inner wall of the installation chute to drive the clamping block to engage with the installation component.

In a second aspect, this application provides a power data monitoring method. The method is applied to the electric meter as described in the first aspect. The method includes:

The host module sends data receiving instructions to the corresponding multi-loop metering module according to the communication address of the multi-loop metering module;

The multi-circuit metering module sends its measured power data to the host module based on the data receiving instructions.

In some embodiments, before the host module sends a data receiving instruction to the corresponding multi-loop metering module according to the communication address of the multi-loop metering module, the method further includes:

The host module sends broadcast signals to multiple multi-circuit metering modules;

Multiple multi-circuit metering modules are based on broadcast signals, causing the communication between the series-connected multi-loop metering modules to be disconnected;

The host module sends read signals to the series-connected multi-loop metering modules in sequence to determine the communication addresses of the multiple multi-loop metering modules.

In some embodiments, the step of the host module sequentially sending read signals to the series-connected multi-loop metering modules to determine the communication addresses of the multiple multi-loop metering modules includes:

The host module sends a read signal to the multi-circuit metering module at the Nth level in series;

The multi-circuit metering module at the Nth level in series sends a reply signal to the host module, and the host module configures the communication address of the multi-loop metering module at the Nth level in series according to the reply signal;

The multi-circuit metering module at the Nth level in series controls its communication connection with the multi-loop metering module at the N+1 level in series;

Among them, N is an integer greater than or equal to 1.

In a third aspect, this application provides a power distribution cabinet, which is characterized by including the electric meter described in the first aspect.

This application connects multiple multi-circuit metering modules measuring single-phase power and multi-phase units in series in sequence, and connects the multi-circuit metering module at the head end of the series to the power supply wiring section, communication wiring section and three-phase voltage wiring section, using the host computer The power connection part of the module provides power for multiple series-connected multi-circuit metering modules, and uses the communication connection part of the host module to communicate with multiple series-connected multi-circuit metering modules. At the same time, the three-phase voltage connection part is used to provide power for multiple series-connected multi-circuit metering modules. The loop metering module provides three-phase voltage signals, and one bus can be used to realize power supply and communication for multiple multi-loop metering modules, which is conducive to simplifying the wiring of the meter system and reducing the construction cost of the meter.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained based on these drawings without exerting creative efforts.

Figure 1 is a schematic structural diagram of an electric meter provided in an embodiment of the present application;

Figure 2 is another structural schematic diagram of the electric meter provided in the embodiment of the present application;

Figure 3 is a schematic structural diagram of one side of the single-phase multi-circuit metering module provided in the embodiment of the present application;

Figure 4 is a schematic structural diagram of the other side of the single-phase multi-circuit metering module provided in the embodiment of the present application;

Figure 5 is a schematic structural diagram of the host module provided in the embodiment of the present application;

Figure 6 is a schematic structural diagram of one side of the multi-phase multi-circuit metering module provided in the embodiment of the present application;

Figure 7 is a schematic structural diagram of the other side of the multi-phase multi-circuit metering module provided in the embodiment of the present application;

Figure 8 is another structural schematic diagram of the electric meter provided in the embodiment of the present application;

Figure 9 is a schematic structural diagram of the switching module provided in the embodiment of the present application;

Figure 10 is a schematic structural diagram of one side of the transfer module provided in the embodiment of the present application;

Figure 11 is a schematic structural diagram of the other side of the transfer module provided in the embodiment of the present application;

Figure 12 is a schematic structural diagram of the multi-circuit metering module provided in the embodiment of the present application;

Figure 13 is a schematic flow chart of the power data monitoring method provided in the embodiment of the present application;

Figure 14 is a schematic flowchart of configuring a communication address provided in the embodiment of the present application;

Figure 15 is a schematic flowchart of configuring a communication address provided in an embodiment of the present application.

Among them, 10 host module, 11 first interface, 20 multi-circuit metering module, 201 threading hole, 202 installation chute, 203 clamp block, 204 chute, 21 single-phase multi-circuit metering module, 211 second interface, 212 fourth Interface, 213 first buckle, 214 first card slot, 22 multi-phase multi-circuit metering module, 221 third interface, 223 second buckle, 224 second card slot, 222 fifth interface, 23 transfer module, 231 Sixth interface, 232 seventh interface, 233 third buckle, 24 transfer cable.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts fall within the scope of protection of the present invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " The directions or positional relationships indicated by "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the directions shown in the accompanying drawings or positional relationships are only for the convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms “first” and “second” are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Thus, features defined as “first” and “second” may explicitly or implicitly include one or more of the described features. In the description of the present invention, "plurality" means two or more than two, unless otherwise explicitly and specifically limited.

In this application, the word "exemplary" is used to mean "serving as an example, illustration, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. The following description is presented to enable any person skilled in the art to make and use the invention. In the following description, details are set forth for the purpose of explanation. It will be understood by one of ordinary skill in the art that the present invention may be practiced without these specific details. In other instances, well-known structures and processes have not been described in detail to avoid obscuring the description of the invention with unnecessary detail. Thus, the present invention is not intended to be limited to the embodiments shown but is to be accorded the widest scope consistent with the principles and features disclosed herein.

Embodiments of the present application provide an electric meter, a power data monitoring method and a power distribution cabinet, which are described in detail below.

First, refer to Figure 1, which shows a schematic structural diagram of an electric meter in an embodiment of the present application, in which the electric meter includes:

Host module 10, the host module 10 has a power connection part, a communication connection part and a three-phase voltage connection part;

A plurality of multi-circuit metering modules 20 , each multi-circuit metering module 20 is configured to measure single-phase power supply or multi-phase power supply, and the multi-circuit metering module 20 measuring single-phase power supply and the multi-circuit metering module 20 measuring multi-phase power supply are optional. combination;

Among them, a plurality of multi-circuit metering modules 20 are connected in series in sequence, and the multi-circuit metering module 20 at the head end of the series is connected to the power wiring part, the communication wiring part and the three-phase voltage wiring part, so that each multi-circuit metering module 20 is indirectly or directly connected. The ground receives power signals, communication signals and three-phase voltage signals.

Specifically, the host module 10 can provide power to multiple multi-circuit metering modules 20 through the power connection section, and can send signals to/receive communications returned by the multiple multi-circuit metering modules 20 through the communication connection section. signals, and can also provide three-phase voltage signals to multiple multi-circuit metering modules 20 through the three-phase voltage connection portion. In some embodiments of the present application, the power connection part, the communication connection part and the three-phase voltage connection part may respectively refer to pins in different parts of the connection port of the host module 10, and some of the pins are used for multiple multi-circuit metering modules 20. Power supply, communication and provide three-phase voltage signals. In some embodiments of the present application, the power connection part, the communication connection part and the three-phase voltage connection part may respectively refer to the jacks in different parts of the connection port of the host module 10. Through some of the jacks, there are multiple multi-circuit metering modules 20 respectively. Power supply, communication and provide three-phase voltage signals.

For example, the communication wiring unit may adopt RS-232C, RS-422, and RS-485 universal serial communication standards. It can be understood that the power connection part, the communication connection part and the three-phase voltage connection part may also refer to three interfaces with pins or jacks on the host module 10, and the three interfaces provide power to multiple multi-circuit metering modules 20 respectively. , communication and providing three-phase voltage signals.

Multiple multi-circuit metering modules 20 can perform power data measurement on single-phase power supply and/or three-phase power supply, so as to be suitable for complex power consumption scenarios including residential power and work power. In some embodiments of the present application, the multi-circuit metering module 20 can measure single-phase electric energy data/multi-phase electric energy data through direct measurement, for example, using a combination of a voltmeter and an ammeter to measure single-phase electric energy data. In other embodiments of the present application, the multi-circuit metering module 20 can measure the single-phase power data/multi-phase power data through indirect measurement, for example, through a current transformer and a voltage transformer set on the power line. The device indirectly measures single-phase power data. In other embodiments of the present application, the multi-circuit metering module 20 can measure single-phase power data/multi-phase power data through resistance method. For example, a resistor with a known resistance is connected to the power output and then Measure the current and voltage across the resistor and calculate the power output of a single-phase supply.

In some embodiments of the present application, multiple multi-loop metering modules 20 can all be directly connected to achieve serial connection. For example, interfaces (pin headers or jacks) are provided on opposite sides of each multi-loop metering module 20, so that This allows multiple multi-circuit metering modules 20 to be directly connected through the interface. In some embodiments of the present application, multiple multi-circuit metering modules 20 can all be connected indirectly to achieve serial connection. For example, a cable is provided between two adjacent multi-circuit metering modules 20 in series, and the cables are used to connect the modules 20 to each other in series. Multiple multi-circuit metering modules 20 are connected in series. In some embodiments of the present application, some of the multiple multi-circuit metering modules 20 can be connected directly and others indirectly to achieve serial connection. For example, some of the multi-circuit metering modules 20 can be directly connected through the cooperation of pins and jacks. The remaining multi-circuit metering modules 20 that are not directly connected are connected through cables.

In some embodiments of the present application, the plurality of multi-circuit metering modules include multiple single-phase multi-circuit metering modules, the single-phase multi-circuit metering modules are configured to measure single-phase power, and the multiple single-phase multi-circuit metering modules are connected in series in sequence. . That is to say, multiple multi-circuit metering modules can be composed of multiple single-phase multi-circuit metering modules, so that the electric meter can record the power data of multiple devices using single-phase power supply.

In some embodiments of the present application, for example, for an embodiment in which multiple multi-circuit metering modules include multiple single-phase multi-circuit metering modules, the multiple multi-loop metering modules further include at least one multi-phase multi-circuit metering module; The loop metering module is configured to measure multi-phase power, and the multi-phase multi-loop metering module is connected in series between any adjacent single-phase multi-loop metering modules. That is to say, a multi-phase multi-circuit metering module can be set up at any position of multiple series-connected single-phase multi-circuit metering modules, so that in the scenario of measuring single-phase power supply, a multi-phase multi-circuit metering module can also be set up to measure multi-phase power supply. , thereby ensuring the flexibility and scalability of the electricity meter.

In some embodiments of the present application, the multiple multi-circuit metering modules include multiple multi-phase multi-loop metering modules; the multi-phase multi-loop metering modules are configured to measure multi-phase power, and the multiple multi-phase multi-loop metering modules are connected in series in sequence . That is to say, multiple multi-circuit metering modules can be composed of multiple multi-phase multi-circuit metering modules, so that the electric meter can record power data of multiple devices using multi-phase power supply.

In some embodiments of the present application, for example, for an embodiment in which multiple multi-circuit metering modules include multiple single-phase multi-circuit metering modules, the multiple multi-circuit metering modules further include at least one single-phase multi-circuit metering module, and the single-phase multi-circuit metering module The loop metering module is configured to measure single-phase power, and the single-phase multi-loop metering module is connected in series between any adjacent multi-phase multi-loop metering modules. That is to say, a single-phase multi-circuit metering module can be set up at any position of multiple series-connected multi-phase multi-circuit metering modules, so that in the scenario of measuring multi-phase power supply, a single-phase multi-circuit metering module can also be set up to measure single-phase power supply. , thereby ensuring the flexibility and scalability of the electricity meter.

In the embodiment of the present application, the present application connects multiple multi-circuit metering modules 20 for measuring single-phase power and multi-phase units in series in sequence, and connects the multi-circuit metering module 20 at the head end of the series with the power supply wiring section, communication wiring section and The three-phase voltage wiring portion is connected, and the power wiring portion of the host module 10 is used to provide power for a plurality of series-connected multi-circuit metering modules 20, and the communication wiring portion of the host module 10 is used to communicate with a plurality of series-connected multi-circuit metering modules 20. At the same time, the three-phase voltage connection part is used to provide three-phase voltage signals for multiple series-connected multi-circuit metering modules 20. One bus can be used to realize the power supply and communication of multiple multi-circuit metering modules 20, which is conducive to simplifying the wiring of the meter system and Reduce the construction cost of electric meters.

In some embodiments of the present application, continue to refer to FIG. 2 , which shows another structural schematic diagram of an electric meter in an embodiment of the present application, in which multiple multi-circuit metering modules 20 include multiple single-phase multi-circuit metering modules. 21 and at least one multi-phase multi-circuit metering module 22; the single-phase multi-circuit metering module 21 is configured to meter single-phase power supply, and the multi-phase multi-circuit metering module 22 is configured to meter multi-phase power supply. Specifically, the single-phase multi-circuit metering module 21 can obtain the voltage data of a single phase (for example, phase A) through the three-phase voltage connection part, and the current transformer of the single-phase multi-circuit metering module 21 can obtain the current of the single-phase power line. data, thereby determining single-phase electric energy data through single-phase voltage data and current data; the multi-phase multi-circuit metering module 22 can obtain multi-phase (such as A-phase, B-phase and C-phase) voltage data through the three-phase voltage connection part, The current transformer of the multi-phase multi-circuit metering module 22 can obtain the current data of the multi-phase power line, thereby determining the multi-phase electric energy data through the multi-phase voltage data and current data. At the same time, since the single-phase multi-circuit metering module 21 can measure electric energy data in civil electricity scenarios, and the multi-phase multi-circuit metering module 22 can measure industrial electricity scenarios, the electricity meter in the embodiment of the present application can be adapted to simultaneous single-phase power supplies and Multi-phase power supply scenario.

In some embodiments of the present application, the three-phase voltage signal provided by the three-phase voltage connection part of the host module 10 can be a strong electric signal directly derived from the power line. The single-phase multi-circuit metering module 21 and the multi-phase multi-circuit metering module 22 The strong electric signal can be converted into a weak electric signal through a voltage sampling circuit (for example, a circuit including an operational amplifier), so that the control chips inside the single-phase multi-circuit metering module 21 and the multi-phase multi-loop metering module 22 can obtain the voltage signal and perform calculations. .

In some other embodiments of the present application, the three-phase voltage signal provided by the three-phase voltage connection part of the host module 10 may be a weak current signal after converting the strong current signal of the power line. For example, the strong current signal is converted into a weak current signal through a voltage sampling circuit. Weak current signal, so that each single-phase multi-circuit metering module 21 and multi-phase multi-circuit metering module 22 do not need to be equipped with a voltage sampling circuit.

In some embodiments of the present application, continue to refer to Figures 2, 3 and 4. Figure 3 shows a schematic structural diagram of one side of the single-phase multi-circuit metering module 21 in the embodiment of the present application. Figure 4 shows a schematic diagram of the single-phase multi-circuit metering module 21 of the present application. A schematic structural diagram of one side of the single-phase multi-circuit metering module 21 in the embodiment. The single-phase multi-circuit metering module 21 has a second interface 211 and a fourth interface 212. The second interface 211 and the fourth interface 212 are respectively located at the single-phase multi-circuit metering module 21. On opposite sides of the loop metering module 21; at least part of the single-phase multi-loop metering modules 21 are arranged side by side, and the fourth interface 212 and the second interface 211 between adjacent single-phase multi-loop metering modules 21 are connected to each other.

It should be noted that, as shown in Figures 4 and 5, the second interface 211 may refer to an interface with multiple pins, and the fourth interface 212 may refer to an interface with multiple jacks. When two single-phase multi-circuit metering modules 21 are connected, the pins of the second interface 211 of one single-phase multi-circuit metering module 21 can be inserted into the jacks of the fourth interface 212 of the other single-phase multi-circuit metering module 21 so that they are arranged side by side. Multiple single-phase multi-circuit metering modules 21 are directly connected. On the one hand, multiple single-phase multi-circuit metering modules 21 can be fixed to each other. On the other hand, multiple single-phase multi-circuit metering modules 21 arranged side by side can be avoided from being connected by cables. This leads to complicated wiring.

It can be understood that the second interface 211 may also refer to an interface with a jack, and the fourth interface 212 refers to an interface with a pin.

In some embodiments of the present application, continuing to refer to Figures 4 and 5, first slots 214 are provided on opposite sides of the second interface 211, and first buckles 213 are provided on opposite sides of the fourth interface 212; A buckle 213 corresponds to the first buckle 214, and the first buckle 213 between adjacent single-phase multi-circuit metering modules 21 cooperates with the first buckle 214 to ensure that the adjacent single-phase multi-circuit metering modules 21 The connection stability between them prevents the separation of multiple single-phase multi-circuit metering modules 21 connected in series.

It is understood that the positions of the first buckle 213 and the first buckle 214 can also be interchanged. For example, the first buckle 213 is provided on opposite sides of the second interface 211 and the first buckle 214 is provided on the fourth interface. 212 Opposite sides.

In some embodiments of the present application, continue to refer to Figures 2, 5, 6 and 7. Figure 5 shows a schematic structural diagram of the host module 10 in the embodiment of the present application, and Figure 6 shows the implementation of the present application. A schematic structural diagram of one side of the multi-phase multi-circuit metering module 22 in the example. Figure 7 shows a schematic structural diagram of the other side of the multi-phase multi-loop metering module 22 in the embodiment of the present application. The host module 10 has a first interface 11, The first interface 11 includes a power connection part, a communication connection part and a three-phase voltage connection part; the multi-phase multi-circuit metering module 22 has a third interface 221 and a fifth interface 222. The third interface 221 and the fifth interface 222 are respectively located on the multi-phase Opposite sides of the multi-circuit metering module 22; the second interface 211 of the single-phase multi-circuit metering module 21 located at the head end of the array is connected to the first interface 11, and the fourth interface 212 of the single-phase multi-circuit metering module 21 located at the end of the array is connected to The third interface 221 of the multi-phase multi-circuit metering module 22 is connected.

Specifically, the first interface 11 may refer to an interface having multiple pins/multiple jacks, some of the pins/jacks correspond to the power wiring part, part of the pins/jacks correspond to the communication wiring part, and the rest Some of the pins/jacks correspond to the three-phase voltage connection parts, so as to provide power supply, communication and three-phase voltage signals to multiple series-connected multi-circuit metering modules 20 through the same first interface 11 . At the same time, the second interface 211 and the first interface 11 of the single-phase multi-circuit metering module 21 located at the head end of the array can be connected through a cable, and the fourth interface 212 of the single-phase multi-circuit metering module 21 located at the end of the array is connected to the multi-phase multi-circuit metering module 21 at the end of the array. The third interface 221 of the loop metering module 22 can be directly connected, so that multiple multi-loop metering modules 20 located in the same row include single-phase multi-loop metering modules 21 and multi-phase multi-loop metering modules 22. Ultimately, multiple multi-circuit metering modules 20 in the same row can measure electric energy data for simultaneous use of single-phase power supply and multi-phase power supply scenarios.

It can be understood that the third interface 221 may refer to an interface having multiple pins, and the fifth interface 222 may refer to an interface having multiple jacks; or the third interface 221 may also refer to an interface having jacks, and the fifth interface 222 may refer to an interface having multiple jacks. Interface 222 refers to an interface with pins.

In some embodiments of the present application, for example, for an embodiment in which first slots 214 are provided on opposite sides of the second interface 211 and first buckles 213 are provided on opposite sides of the fourth interface 212, continue to refer to Figure 6 As shown in Figure 7, second slots 224 are provided on opposite sides of the third interface 221, and second buckles 223 are provided on opposite sides of the fifth interface 222; the second buckles 223 correspond to the first slot 214. , the second slot 224 corresponds to the first buckle 213 . When the multi-phase multi-circuit metering module 22 is connected to the single-phase multi-circuit metering module 21, the second slot 224 at the third interface 221 can cooperate with the first buckle 213 of the fourth interface 212. The second buckle 223 can cooperate with the first slot 214 of the second interface 211, so that both sides of the multi-phase multi-circuit metering module 22 can be directly connected to the adjacent single-phase multi-circuit metering module 21, so that the multi-phase multi-circuit metering module 22 can be directly connected to the multi-phase multi-circuit metering module 21. The loop metering module 22 can be fixed on the left or right side of the single-phase multi-loop metering module 21 , thereby improving the installation stability and flexibility of the multi-phase multi-loop metering module 22 .

It is understood that the positions of the second buckle 223 and the second buckle 224 can also be interchanged. For example, the second buckle 223 is provided on opposite sides of the fifth interface 222 and the second buckle 224 is provided on the third interface. 221 Opposite sides.

In some embodiments of the present application, continue to refer to Figure 8. Figure 8 shows another structural schematic diagram of an electric meter in an embodiment of the present application, in which multiple multi-circuit metering modules 20 are arranged in an array, and the multi-circuit metering modules in the same row are The modules 20 are connected in series in sequence; the multi-circuit metering module 20 located in the first row and at the beginning of the arrangement is connected to the host module 10; the multi-circuit metering module 20 located in the upper row and at the end of the arrangement is connected to the multi-circuit metering module 20 in the next row and at the beginning of the arrangement. Communication connection.

It should be noted that since the plurality of multi-circuit metering modules 20 are arranged in multiple rows respectively, at the same time, the multi-loop metering modules 20 in the upper row and at the tail end are communicated with the multi-loop metering modules 20 in the next row and at the head end, so that multiple The multi-circuit metering modules 20 form a multi-row structure. Multiple multi-circuit metering modules 20 in the same row can measure electric energy data for the same single-phase power supply and multi-phase power supply scenarios, so that multiple multi-circuit metering modules 20 in multiple rows can For electric energy data measurement in different single-phase power supply and multi-phase power supply scenarios, when adding single-phase power supply and multi-phase power supply power consumption scenarios, only a row of single-phase multi-circuit metering modules 21 and multi-phase multi-circuit metering modules 21 need to be added. The loop metering module 22 is sufficient, which is beneficial to improving the scalability of the electric meter for electric energy measurement scenarios.

In some embodiments of the present application, for example, for an embodiment in which multiple single-phase multi-circuit metering modules 21 are respectively arranged in multiple rows, continue to refer to Figures 8 and 9 . Figure 9 shows the transfer module 23 in the embodiment of the present application. A schematic structural diagram of The fifth interface 222 of the phase multi-circuit metering module 22 is connected; one end of the transfer cable 24 is connected to the seventh interface 232, and the other end is connected to the second interface 211 of the single-phase multi-circuit metering module 21 located in the next row and at the head end of the arrangement. . That is to say, the multi-circuit metering modules 20 between different rows are connected through the transfer module 23 and the transfer cable 24, which facilitates the transfer and series connection of the multi-circuit metering modules 20 between different rows, thereby targeting multiple different Use single-phase power supply and multi-phase power supply scenarios to measure power data.

In some embodiments of the present application, continue to refer to Figure 10. Figure 10 shows a schematic structural diagram of one side of the transfer module 23 in the embodiment of the present application, in which third buckles are provided on opposite sides of the sixth interface 231. 233. The third buckle 233 can be snapped into the slots on both sides of the second interface 211/fifth interface 222, so that the transfer module 23 can be fixed on the single-phase multi-circuit metering module 21 or the multi-phase multi-circuit metering module 22. on one side to ensure the convenience and firmness of installation of the transfer module 23.

It can be understood that, as shown in Figure 11, which shows a schematic structural diagram of one side of the transfer module 23 in the embodiment of the present application, third buckles 233 can also be provided on opposite sides of the seventh interface 232; or, At the same time, third buckles 233 are provided on opposite sides of the sixth interface 231 and the seventh interface 232 .

In some embodiments of the present application, continue to refer to Fig. 3, Fig. 4 and Fig. 12. Fig. 12 shows a structural schematic diagram of the bottom of the multi-circuit metering module 20 in the embodiment of the present application, wherein the multi-loop metering module 20 has The threading hole 201 and the mounting chute 202 are penetrated. The threading hole 201 extends along the first direction, and the mounting chute 202 extends along the second direction. The first direction and the second direction are perpendicular to each other.

It should be noted that the threading hole 201 can allow the power cord to pass through, so that the corresponding current transformer can detect the current signal of the power cord, and the second chute can facilitate the installation of the multi-circuit metering module 20 on the corresponding slide rail. Thus, the sliding installation and fixation of the multi-circuit metering module 20 is achieved. At the same time, since the first direction and the second direction are perpendicular to each other, after multiple multi-circuit metering modules 20 are installed, the adjacent multi-circuit metering modules 20 will not cover the threading holes 201, thereby avoiding affecting the power line path. The threading hole 201 passes through.

Further, in some embodiments of the present application, continue to refer to Figure 12, in which a clamping block 203 that telescopes along the first direction and a spring 204 extending along the first direction are installed in the installation chute 202; one end of the spring 204 is connected to the clamping block 203. The block 203 is in contact, and the other end is in contact with the inner wall of the installation chute 202 to drive the clamping block 203 to engage with the installation component. Specifically, a groove can be provided on the inner wall of the installation chute 202 to facilitate the installation of the spring 204 in the groove for fixation; or a sliding rod can also be provided on the inner wall of the installation chute 202 and the spring 204 can be sleeved. Fixing is achieved on the sliding rod. Since the clamping block 203 and the spring 204 are provided in the mounting chute 202, after the multi-circuit metering module 20 is installed on the corresponding slide rail through the mounting chute 202, under the force of the spring 204 The buckle can be engaged with the slide rail, thereby preventing the multi-circuit metering module 20 from detaching from the slide rail or sliding left and right, which is beneficial to improving the installation firmness of the multi-circuit metering module 20 .

It is worth noting that the above content about the electric meter is intended to clearly explain the implementation verification process of the present application. Under the guidance of the present application, those skilled in the art can also make equivalent modified designs, for example, multiple units in the same row. Multi-phase multi-circuit metering modules 22 are connected in series between any two single-phase multi-circuit metering modules 21 in the phase multi-circuit metering module 21; for another example, multiple multi-phase multi-loop metering modules 22 are provided in the same row of multi-loop metering modules 20. , so that the multi-phase multi-circuit metering module 22 and the single-phase multi-circuit metering module 21 can be combined and arranged arbitrarily.

Furthermore, in order to better implement the electric meter in the embodiments of the present application, based on the electric meter, the present application also provides a power data monitoring method. The electric power data monitoring method is applied to the electric meter in any of the above embodiments. Refer to Figure 13. Figure 13 shows a schematic flow chart of the power data monitoring method in the embodiment of the present application, where the power data monitoring method includes:

Step S1301, the host module 10 sends a data receiving instruction to the corresponding multi-loop metering module 20 according to the communication address of the multi-loop metering module 20;

Step S1302: The multi-circuit metering module 20 sends its measured power data to the host module 10 based on the data receiving instruction.

It should be noted that the communication address of the multi-circuit metering module 20 needs to be determined by the host module 10 to avoid duplication of communication addresses generated by different multi-circuit metering modules 20, resulting in the host module 10 being unable to determine the specific power data returned. The corresponding multi-circuit metering module 20. After the host module 10 configures the communication address of the multi-loop metering module 20 in advance, it can send a data receiving instruction to the corresponding multi-loop metering module 20 according to the configured address, thereby receiving the power data returned by the corresponding multi-loop metering module 20, thereby Realize unified recording and display of power data.

For example, the host module 10 can perform normal data reading and parameter setting on the multi-circuit metering module 20 according to the Modbus RTU protocol, DL645 or DL698 protocol.

In some embodiments of the present application, continue to refer to Figure 14. Figure 14 shows a schematic flow chart of configuring a communication address in an embodiment of the present application, in which the host module 10 sends a message to the host module 10 according to the communication address of the multi-loop metering module 20. Before the corresponding multi-circuit metering module 20 sends a data receiving instruction, the steps of configuring the communication address include:

Step S1401, the host module 10 sends broadcast signals to multiple multi-circuit metering modules 20;

Step S1402, multiple multi-circuit metering modules 20 disconnect communication between the series-connected multi-loop metering modules 20 based on broadcast signals;

In step S1403, the host module 10 sends read signals to the series-connected multi-circuit metering modules 20 in order to determine the communication addresses of the multiple multi-loop metering modules 20.

It should be noted that each multi-circuit metering module 20 can be equipped with a switch (such as a MOS tube, a transistor, an IGBT tube or a relay, etc.), and the control of the switch causes the communication between the series-connected multi-loop metering modules 20 to be disconnected/connected. In the initial state, the multiple multi-loop metering modules 20 are in a communication connection state. Therefore, after the host module 10 sends broadcast signals to the multiple multi-loop metering modules 20, each multi-loop metering module 20 can receive the broadcast signal, so that Based on the broadcast signal, the communication between the series-connected multi-circuit metering modules 20 is disconnected. For example, when the broadcast signal is a high-level signal, the PMOS tube is disconnected, causing the communication between the series-connected multi-circuit metering modules 20 to be disconnected. Then At this time, only the multi-loop metering module 20 at the head end of the series is connected to the host module 10 for communication. Therefore, the host module 10 can first determine the communication address of the multi-loop metering module 20 at the head end of the series, and then determine the addresses of the remaining multi-loop metering modules 20 in turn. communication address to avoid duplication of communication address configurations for multiple multi-circuit metering modules 20.

In some embodiments of the present application, continue to refer to Figure 15. Figure 15 shows a schematic flow chart of configuring a communication address in an embodiment of the present application, in which the host module 10 sequentially sends readings to the series-connected multi-circuit metering module 20. The steps of determining the communication addresses of multiple multi-circuit metering modules 20 include:

Step S1501, the host module 10 sends a read signal to the multi-circuit metering module 20 of the Nth stage in series;

Step S1502, the multi-circuit metering module 20 of the Nth level in series sends a reply signal to the host module 10, and the host module 10 configures the communication address of the multi-loop metering module 20 of the Nth level in series according to the reply signal;

Step S1503, the multi-circuit metering module 20 at the Nth level in series controls its communication connection with the multi-circuit metering module 20 at the N+1st level in series; where N is an integer greater than or equal to 1.

It should be noted that since the communication between the multi-circuit metering modules 20 in series is disconnected after receiving the broadcast signal, only the multi-loop metering module 20 at the head end of the series is connected to the host module 10 in the initial stage. Therefore, the host module 10 A read signal can be sent to the multi-circuit metering module 20 at the first level of the series (i.e. the head end of the series), and the multi-circuit metering module 20 at the first level of the series sends a reply signal to the host module 10, so that the host module 10 can communicate with the first level of the series. The multi-circuit metering module 20 of the first level in series is configured with a communication address, and then the multi-circuit metering module 20 of the first level in series is controlled to communicate with the multi-circuit metering module 20 of the second level in series. Then the host module 10 connects to the multi-circuit metering module 20 of the second level in series. The multi-circuit metering module 20 is configured with a communication address, and the cycle is repeated until the communication address of each multi-loop metering module 20 is determined.

For example, the reply signal sent by the multi-circuit metering module 20 of the Nth stage in series may include its equipment identification code (such as equipment serial number and production date), and the host module 10 processes and converts (for example, encrypts) its equipment identification code to obtain communication. address. For example, the device identification code of the first-level multi-circuit metering module 20 in series is 000000012012061200000001, and the communication address configured for the first-level multi-circuit metering module 20 in series is: F8 10F810 00 0A 64C2.

It can be understood that the host module 10 can also configure the communication address for each multi-circuit metering module 20 according to the time node when the reply signal is received; or, the host module 10 can also configure the communication address for each multi-circuit metering module 20 according to the order of receiving the reply signal. mailing address.

Furthermore, in order to better implement the electric meter in the embodiments of the present application, based on the electric meter, the present application also provides a power distribution cabinet. The power distribution cabinet includes the electric meter according to any of the above embodiments. Since the power distribution cabinet in the embodiment of the present application is equipped with the electric meter of the above embodiment, it has all the beneficial effects of the above electric meter, which will not be described again here.

In the above embodiments, each embodiment is described with its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the above detailed descriptions of other embodiments and will not be described again here.

The basic concepts have been described above. It is obvious to those skilled in the art that the above detailed disclosure is only an example and does not constitute a limitation of the present application. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements, and corrections to this application. Such modifications, improvements and corrections are suggested in this application, so such modifications, improvements and corrections still fall within the spirit and scope of the exemplary embodiments of this application.

At the same time, this application uses specific words to describe the embodiments of the application. For example, "one embodiment", "an embodiment", and/or "some embodiments" means a certain feature, structure or characteristic related to at least one embodiment of the present application. Therefore, it should be emphasized and noted that “one embodiment” or “an embodiment” or “an alternative embodiment” mentioned twice or more at different places in this specification does not necessarily refer to the same embodiment. . In addition, certain features, structures or characteristics in one or more embodiments of the present application may be appropriately combined.

Similarly, it should be noted that in order to simplify the presentation of the disclosure of the present application and thereby facilitate understanding of one or more embodiments of the invention, in the foregoing description of the embodiments of the present application, multiple features are sometimes combined into one embodiment. accompanying drawings or descriptions thereof. However, this method of disclosure does not imply that the subject matter of the application requires more features than are mentioned in the claims. In fact, embodiments may have less than all features of a single disclosed embodiment.

In some embodiments, numbers are used to describe the quantities of components and properties. It should be understood that such numbers used to describe the embodiments are modified by the modifiers "about", "approximately" or "substantially" in some examples. Grooming. Unless otherwise stated, "about," "approximately," or "substantially" means that the stated number is allowed to vary by ±20%. Accordingly, in some embodiments, the numerical parameters used in the specification and claims are approximations that may vary depending on the desired features of the individual embodiment. In some embodiments, numerical parameters should account for the specified number of significant digits and use general digit preservation methods. Although the numerical fields and parameters used to confirm the breadth of the ranges in some embodiments of the present application are approximations, in specific embodiments, such numerical values are set as accurately as feasible.

Each patent, patent application, patent application publication and other material, such as articles, books, instructions, publications, documents, etc., cited in this application is hereby incorporated by reference into this application in its entirety, to the extent that it is inconsistent with the content of this application. Application history documents that are inconsistent or conflicting are excluded, as are documents (currently or later appended to this application) that limit the broadest scope of the claims of this application. It should be noted that if there is any inconsistency or conflict between the descriptions, definitions, and/or use of terms in the accompanying materials of this application and the content described in this application, the description, definitions, and/or use of terms in this application shall prevail. .

The above is a detailed introduction to an electric meter, a power data monitoring method and a distribution cabinet provided by the embodiments of the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only for To help understand the method and its core idea of the present invention; at the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of the present invention. In summary, the contents of this specification It should not be construed as a limitation of the invention.

Claims (15)

1. An electricity meter, comprising:

the host module is provided with a power supply wiring part, a communication wiring part and a three-phase voltage wiring part;

a plurality of multi-loop metering modules, each of the multi-loop metering modules configured to meter single-phase power or multi-phase power, and the multi-loop metering modules metering single-phase power and the multi-loop metering modules metering multi-phase power are arbitrarily combined;

the multi-loop metering modules are sequentially connected in series, and the multi-loop metering modules positioned at the head end of the series connection are connected with the power connection part, the communication connection part and the three-phase voltage connection part, so that each multi-loop metering module indirectly or directly receives a power signal, a communication signal and a three-phase voltage signal.

2. The electricity meter of claim 1, wherein a plurality of said multi-loop metering modules comprises a plurality of single-phase multi-loop metering modules;

the single-phase multi-loop metering module is configured to meter a single-phase power supply, and a plurality of the single-phase multi-loop metering modules are sequentially connected in series.

3. The electricity meter of claim 2, wherein a plurality of said multi-circuit metering modules further comprises at least one multi-phase multi-circuit metering module;

the multi-phase multi-loop metering module is configured to meter a multi-phase power source, and the multi-phase multi-loop metering module is connected in series between any adjacent single-phase multi-loop metering modules.

4. The electricity meter of claim 1, wherein a plurality of said multi-circuit metering modules comprises a plurality of multi-phase multi-circuit metering modules;

the multi-phase multi-loop metering module is configured to meter a multi-phase power source, and a plurality of the multi-phase multi-loop metering modules are sequentially connected in series.

5. An electricity meter as in claim 4, wherein a plurality of said multi-loop metering modules further comprises at least one single-phase multi-loop metering module;

the single-phase multi-loop metering module is configured to meter a single-phase power source, and the single-phase multi-loop metering module is connected in series between any adjacent multi-phase multi-loop metering modules.

6. An electricity meter as claimed in claim 3 or claim 5, wherein a plurality of said multi-circuit metering modules are arranged in an array, said multi-circuit metering modules of the same row being serially connected in turn;

the ammeter further comprises a switching module and a switching flat cable, wherein the switching module is connected with the multi-loop metering module which is arranged in the same row and at the tail end of the multi-loop metering module;

one end of the switching flat cable is connected with the switching module of the upper row, and the other end of the switching flat cable is connected with the multi-loop metering module of the lower row and the arrangement head end.

7. The meter of claim 6, wherein the switch module has a sixth interface and a seventh interface;

third buckles are arranged on two opposite sides of the sixth interface; and/or

And third buckles are arranged on two opposite sides of the seventh interface.

8. An electricity meter as in claim 3 or 5, wherein said single-phase multi-loop metering module has a second interface and a fourth interface, said second interface and said fourth interface being located on opposite sides of said single-phase multi-loop metering module, respectively;

the two opposite sides of the second interface are provided with first clamping grooves, the two opposite sides of the fourth interface are provided with first buckles, and the first buckles correspond to the first clamping grooves.

9. The electricity meter of claim 8, wherein said multiphase, multi-loop metering module has a third interface and a fifth interface, said third interface and said fifth interface being located on opposite sides of said multiphase, multi-loop metering module, respectively;

the two opposite sides of the third interface are provided with second clamping grooves, and the two opposite sides of the fifth interface are provided with second buckles;

the second clamping buckle corresponds to the first clamping groove, and the second clamping groove corresponds to the first clamping buckle.

10. The electricity meter of claim 1, wherein the multi-circuit metering module has a threaded aperture therethrough and a mounting chute;

the threading hole extends along a first direction, the installation chute extends along a second direction, and the first direction is perpendicular to the second direction.

11. An electricity meter as in claim 10, wherein said mounting chute has mounted therein a latch extending in said first direction and a spring extending in said first direction;

one end of the spring is contacted with the clamping block, and the other end of the spring is contacted with the inner side wall of the installation chute so as to drive the clamping block to be clamped with the installation component.

12. A method of monitoring power data, wherein the method is applied to an electricity meter as claimed in any one of claims 1 to 11, the method comprising:

The host module sends a data receiving instruction to the corresponding multi-loop metering module according to the communication address of the multi-loop metering module;

the multi-loop metering module sends its measured power data to the host module based on the data reception instruction.

13. The power data monitoring method of claim 12, wherein before the step of the host module sending data reception instructions to the corresponding multi-loop metering module according to the communication address of the multi-loop metering module, the method further comprises:

the host module sends broadcast signals to a plurality of multi-loop metering modules;

the multi-loop metering modules are connected in series, so that communication among the multi-loop metering modules connected in series is disconnected based on the broadcast signals;

the host module sequentially sends reading signals to the multi-loop metering modules connected in series to determine communication addresses of the multi-loop metering modules.

14. The power data monitoring method of claim 13, wherein the step of the host module sequentially sending a read signal to the multi-loop metering modules in series to determine the communication addresses of the plurality of multi-loop metering modules comprises:

The host module sends a reading signal to the multi-loop metering module connected in series with the Nth stage;

the multi-loop metering module connected in series with the Nth stage sends a reply signal to the host module, and the host module configures a communication address of the multi-loop metering module connected in series with the Nth stage according to the reply signal;

the multi-loop metering module connected with the Nth stage in series controls the multi-loop metering module to be in communication connection with the multi-loop metering module connected with the (n+1) th stage in series;

wherein N is an integer greater than or equal to 1.

15. A power distribution cabinet comprising an electricity meter according to any one of claims 1 to 11.