CN116930816B - Electric leakage detection method and device for distribution box, distribution box and storage medium - Google Patents
Electric leakage detection method and device for distribution box, distribution box and storage medium Download PDFInfo
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- CN116930816B CN116930816B CN202311176663.4A CN202311176663A CN116930816B CN 116930816 B CN116930816 B CN 116930816B CN 202311176663 A CN202311176663 A CN 202311176663A CN 116930816 B CN116930816 B CN 116930816B
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- 239000004020 conductor Substances 0.000 claims description 21
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/52—Testing for short-circuits, leakage current or ground faults
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
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Abstract
The application relates to a leakage detection method and device of a distribution box, the distribution box and a storage medium, wherein the distribution box comprises a metal backboard for setting a bus module, and the method comprises the following steps: acquiring temperature information in a distribution box; acquiring backboard temperature information of a metal backboard; and under the condition that the comparison result of the temperature information in the box and the temperature information of the backboard meets the preset detection condition, judging that the distribution box is subjected to electric leakage. The comparison result between the acquired temperature information in the distribution box and the backboard temperature information of the metal backboard is used as a criterion for detecting the occurrence of electric leakage of the distribution box, and under the condition that the comparison result between the temperature information in the box and the backboard temperature information meets the preset detection condition, the situation that the temperature rise phenomenon occurs due to the eddy current effect of the confluence module of the metal backboard can be judged, so that the occurrence of electric leakage of the distribution box is monitored, the electric leakage fault of the distribution box is reflected by the temperature, the reliability, the sensitivity and the anti-interference capability of electric leakage detection are effectively improved, and the universal performance of application is realized.
Description
Technical Field
The application relates to the technical field of power grids, in particular to a method and a device for detecting electric leakage of a distribution box, the distribution box and a storage medium.
Background
The distribution box is a cabinet body integrated with electric elements for distributing electric energy, is used as electric equipment for centralized distribution management, and has the advantages of high integration, easiness in maintenance, simplicity and convenience in operation and the like. At present, a residual current operation protection device is generally adopted as a last defense line of leakage protection, when the on-site residual current amplitude exceeds a setting threshold value, the occurrence of leakage faults is judged, and a power supply is cut off, but the residual current operation protection device is easily influenced by factors such as line distributed capacitance current, downstream stray leakage current and the like, when no leakage occurs, the occurrence of the leakage is judged by detecting that the current amplitude exceeds the setting threshold value, so that misoperation is caused, even the operation cannot be performed, and the detection reliability is poor.
Disclosure of Invention
Based on the above, it is necessary to provide a method and a device for detecting the leakage of a distribution box, the distribution box and a storage medium for detecting the leakage of the distribution box, aiming at the problems that in the prior art, the method for performing the leakage protection on the low-voltage distribution network based on the detection of the leakage current is easy to be interfered to generate misjudgment and has poor reliability.
In order to achieve the above object, the present application provides a leakage detection method of a distribution box including a metal back plate for setting a bus bar module, the leakage detection method of a distribution box including:
acquiring temperature information in the distribution box;
acquiring backboard temperature information of the metal backboard;
and under the condition that the comparison result of the temperature information in the box and the temperature information of the backboard meets the preset detection condition, judging that the distribution box is subjected to electric leakage.
In one embodiment, the preset detection condition includes: the duration that the difference value of the temperature information in the box and the back plate temperature information exceeds a preset difference value threshold value is larger than or equal to a first preset time; and/or
The duration that the ratio of the in-box temperature information to the back plate temperature information exceeds a preset ratio threshold is greater than or equal to a second preset time.
In one embodiment, the back plate temperature information of the metal back plate includes a plurality of back plate temperature information, and the obtaining the back plate temperature information of the metal back plate includes:
acquiring average temperature values of a plurality of backboard temperature information of the metal backboard;
under the condition that the comparison result of the temperature information in the box and the temperature information of the back plate meets the preset detection condition, the electric leakage of the distribution box is judged, and the method comprises the following steps:
and under the condition that the comparison result of the temperature information in the box and the average temperature value meets the preset detection condition, judging that the distribution box is subjected to electric leakage.
In one embodiment, the metal back plate is provided with a plurality of bus bar areas for setting the bus bar module, and the back plate temperature information of the metal back plate comprises a plurality of back plate temperature information of a plurality of bus bar areas.
In one embodiment, the obtaining the back plate temperature information of the metal back plate includes:
acquiring average temperature values of a plurality of backboard temperature information of a plurality of bus bar areas;
under the condition that the comparison result of the temperature information in the box and the temperature information of the back plate meets the preset detection condition, the electric leakage of the distribution box is judged, and the method comprises the following steps:
and under the condition that the comparison result of the temperature information in the box and the average temperature value meets the preset detection condition, judging that the distribution box is subjected to electric leakage.
In one embodiment, the obtaining the back plate temperature information of the metal back plate includes:
acquiring temperature information of each backboard of each busbar area;
under the condition that the comparison result of the temperature information in the box and the temperature information of the back plate meets the preset detection condition, the electric leakage of the distribution box is judged, and the method comprises the following steps:
and under the condition that the comparison result of the temperature information in the box and the temperature information of the back plate meets the preset detection condition, judging that the electric leakage occurs in the target busbar area of the distribution box, wherein the target busbar area is the busbar area of which the comparison result of the temperature information in the box and the temperature information of the back plate meets the preset detection condition.
In one embodiment, the power distribution box further includes a leakage protection module, and when the comparison result of the temperature information in the box and the temperature information of the back plate meets a preset detection condition, after determining that the target busbar area of the power distribution box leaks, the power distribution box further includes:
and controlling the leakage protection module to disconnect the power-on path of the target busbar area.
The application provides a leakage detection device of block terminal, the block terminal is including being used for setting up the metal backplate of converging the module, the leakage detection device of block terminal includes:
the first temperature acquisition module is used for acquiring temperature information in the distribution box;
the second temperature acquisition module is used for acquiring backboard temperature information of the metal backboard;
and the detection module is used for judging that the distribution box is in electric leakage under the condition that the comparison result of the temperature information in the box and the temperature information of the back plate meets the preset detection condition.
The application provides a block terminal, include:
the metal backboard is used for setting the confluence module;
the first temperature sensing module is used for acquiring temperature information in the distribution box;
the second temperature sensing module is positioned on the metal backboard and used for acquiring backboard temperature information of the metal backboard;
and the electricity leakage detection circuit is respectively connected with the first temperature sensing module and the second temperature sensing module and is used for judging that the distribution box is leaked under the condition that the comparison result of the temperature information in the box and the temperature information of the back plate meets the preset detection condition.
The present application provides a computer readable storage medium having stored thereon a computer program which when executed by a processor implements the steps of the method as described above.
According to the electric leakage detection method and device for the distribution box, the distribution box and the storage medium, based on the condition that the distribution box is in electric leakage, the incoming line magnetic field and the outgoing line magnetic field of the converging module of the metal backboard cannot be counteracted, so that larger induction potential and induction current are generated, the converging module generates eddy current effect, and the surface temperature of the metal backboard is increased, so that a comparison result between acquired temperature information in the distribution box and backboard temperature information of the metal backboard is used as a criterion for detecting electric leakage of the distribution box, and under the condition that the comparison result between the temperature information in the box and backboard temperature information meets preset detection conditions, the converging module of the metal backboard can be judged to generate eddy current effect to cause temperature rise phenomenon, so that electric leakage of the distribution box is monitored, and the reliability, sensitivity and anti-interference capability of electric leakage detection can be effectively improved in a mode of temperature reflection distribution box electric leakage fault, and the electric leakage detection method is applicable.
Drawings
In order to more clearly illustrate the technical solutions of embodiments or conventional techniques of the present application, the drawings required for the descriptions of the embodiments or conventional techniques will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person of ordinary skill in the art.
Fig. 1 is a flow chart of a leakage detection method of a distribution box according to an embodiment;
FIG. 2 is a schematic diagram showing the cancellation of the induced magnetic fields of the conductor loops in the bus module of the metal back plate according to one embodiment;
FIG. 3 is a schematic diagram of a temperature curve of the temperature information in the power distribution box and the back plate temperature information of the metal back plate according to an embodiment;
fig. 4 is a schematic structural diagram of a leakage detection device of a distribution box according to an embodiment.
Detailed Description
In order to facilitate an understanding of the present application, a more complete description of the present application will now be provided with reference to the relevant figures. Examples of the present application are given in the accompanying drawings. This application may, however, be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," and/or the like, specify the presence of stated features, integers, steps, operations, elements, components, or groups thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or groups thereof. Also, in this specification, the term "and/or" includes any and all combinations of the associated listed items.
The low-voltage power distribution network has wide multiple sides, crisscross lines, complex and various equipment, is limited by factors such as technical and economic cost, construction level and the like, and upgrade and transformation work of the low-voltage power distribution network is stopped for a long time, so that more potential hazards of leakage faults exist. The leakage fault is easy to cause personal electric shock and electric fire accident, and serious life and property loss is caused. Meanwhile, the low-voltage distribution network mainly utilizes a residual current action protection device to rapidly cut off a power supply when an electric leakage fault occurs, the residual current action protection device is used as the last defense line of the electric leakage protection, an amplitude comparison principle is adopted, the electric leakage protection action is triggered when the on-site residual current amplitude is detected to exceed a setting threshold value, but the residual current action protection device is easily influenced by factors such as distributed capacitance current leakage current, downstream stray leakage current and the like, the residual current action protection device is easy to misjudge the electric leakage condition and generate misoperation of the electric leakage protection, even the operation cannot be carried out, and the actual application effect is not ideal.
The existing residual current protection method is easily influenced by factors such as distributed capacitance current of a line, and the leakage monitoring and protection effects are difficult to play, so that leakage accidents frequently occur, and the electricity utilization safety of users is seriously endangered. Therefore, the leakage detection method with high reliability is provided, so that the defects of poor reliability and low sensitivity of the traditional leakage protection method are overcome.
In an embodiment, referring to fig. 1, a method for detecting leakage of a distribution box is provided, including steps S102 to S106, where the distribution box includes a metal back plate for setting a bus module.
Step S102: and acquiring temperature information in the distribution box.
The low-voltage distribution device is formed by assembling the switch equipment, the measuring instrument, the protection electrical appliance and the auxiliary equipment in a closed or semi-closed metal cabinet or on a screen according to the electrical wiring requirement, is convenient for stopping and transmitting power, and plays roles of measuring and judging stopping and transmitting power. Further, when the distribution box adopts the mode of wiring behind the board of metal backplate, the wiring is led to the upper and lower terminal of a little broken in front of the dish by metal backplate perforation, and this mode overall arrangement is succinct pleasing to the eye, accords with design, installation, inspection and acceptance criterion and product standard requirement, so the metal backplate that is used for setting up the collection flow module in this embodiment can understand to be equipped with the busbar region on the metal backplate, the busbar region is equipped with the through wires hole for the conductor perforation to metal backplate rear side walking line overall arrangement.
It will be appreciated that B in equation (1) represents the magnetic field magnitude, μ at a particular point, as shown in equation (1) 0 Represent constant, mu 0 The magnitude of (2) depends on the nature of the material, r represents the distance of the conductor to a particular point, and I represents the current of the conductor.
---（1）
As can be seen from the formula (1), under certain conditions, the larger the current is, the larger the generated magnetic field is, the proportional relationship between the two is that in the busbar area, the sum of the incoming current and each shunt outgoing current is equal and opposite, so that in the metal backboard area, the magnetic fields generated by the incoming current and the outgoing current are equal and opposite, the two types of magnetic fields cancel each other in the metal backboard area, which is insufficient to generate induced potential and induced current in the backboard, specifically please refer to the situation that the induced magnetic fields of the conductor loop in the partial busbar area of the distribution box shown in fig. 2 cancel each other, fig. 2 illustrates a branching loop, in which one threading hole is used for leading an L conductor (live wire) through hole to the rear side of the metal backboard, and the other threading hole is used for leading an N conductor (zero wire) through hole to the rear side of the metal backboard, and in the case that no electric leakage occurs in the distribution box, the currents generated by the L conductor and the N conductor are equal and opposite, so that the magnetic fields generated by the L conductor and the N conductor cancel each other, which is insufficient to generate eddy current effect.
Because each electrified conductor in the loop independently passes through the metal hole on the backboard, under the condition that the distribution box is leaked, most low-voltage loops have larger leakage current or capacitance current, so that vector sum of incoming line current and outgoing line current in a busbar area is not zero, namely, the magnetic field generated by incoming line and the magnetic field generated by outgoing line are unequal in size, larger induced potential and induced current are generated, the busbar area is caused to generate eddy current effect, the surface temperature of the metal backboard is rapidly increased, fire disaster is easily caused, safety accidents are caused, and great potential safety hazards exist.
Therefore, based on the distribution box, the mode that each electrified conductor of the bus module independently penetrates through the metal hole to carry out metal back plate back wiring is adopted, when electric leakage occurs, the bus area can generate eddy current effect, so that equipment, circuits, connectors and the like in the box generate heat, and serious fire hazards exist. In the embodiment, the in-box environment temperature and the metal backboard temperature of the distribution box are used as criteria to monitor the leakage faults of the distribution box, so that the reliability and the sensitivity of leakage detection are improved.
Optionally, the temperature information in the box of the distribution box can be obtained through the first temperature sensor, and the specific setting position of the first temperature sensor can be determined according to the actual application scene, and only the temperature information data in the box of the distribution box can be monitored in real time.
Step S104: and acquiring backboard temperature information of the metal backboard.
According to the principle that the temperature of the metal backboard is increased by the eddy current effect generated by electric leakage, the obtained backboard temperature information of the metal backboard is used as a monitoring quantity to reflect the electric leakage fault characteristics, and optionally, backboard temperature information data of the metal backboard can be monitored in real time through a second temperature sensor. It should be noted that, the second temperature sensor may be disposed on the metal back plate, and the closer to the bus module, the more remarkable the temperature monitoring effect is, when the bus module includes a plurality of bus areas, the second temperature sensors may be disposed in each bus area respectively, so that the temperature monitoring results of the plurality of second temperature sensors are used to represent the temperature information of the back plate.
Step S106: and under the condition that the comparison result of the temperature information in the box and the temperature information of the backboard meets the preset detection condition, judging that the distribution box is subjected to electric leakage.
It can be understood that under normal conditions (i.e. when no leakage occurs), the incoming magnetic field and the outgoing magnetic field of the threading hole on the metal backboard are balanced, and no eddy current effect is generated to change the temperature of the metal backboard, but under the condition of leakage, the current vector sum of the conductor loop is not zero due to leakage, the incoming magnetic field and the outgoing magnetic field of the threading hole are unequal in size, so that an eddy current effect is generated, and the temperature on the metal backboard can present a trend of temperature increasing along with the occurrence of leakage. Therefore, the comparison result of the real-time monitoring of the temperature information in the box and the temperature information of the backboard is used as a criterion for monitoring whether the electric leakage occurs in the distribution box, and when the comparison result of the two meets the preset detection condition, for example, refer to fig. 3, fig. 3 shows the comparison situation of the temperature curve between the temperature information in the box of the distribution box and the temperature information of the backboard of the metal backboard, at t 1 Before the moment, the temperature information in the box is nearly consistent with the temperature of the backboard, but at t 1 After the moment, the phase difference value of the two is gradually increased, and as the time is increased, the temperature information data of the backboard is far greater than the temperature information data in the box, so that the distribution box is leaked, the sizes of an incoming line magnetic field and an outgoing line magnetic field of a loop are unequal, larger induction potential and induction current are generated, the metal backboard generates an eddy current effect to generate a heating phenomenon, the temperature of the metal backboard is rapidly increased, the distribution box can be judged to be leaked, and further the subsequent leakage protection operation is triggered.
Based on the comparison result of the comprehensive utilization of the temperature information in the box and the temperature information of the backboard, the method is still applicable when the distributed capacitance current of the system is large or the fault leakage resistance is high as the criterion for reflecting the occurrence of the leakage fault of the distribution box, namely, the problem that the leakage detection of the distribution box based on the temperature is not easily affected by factors such as the distributed capacitance current leakage current, the downstream stray leakage current and the like to cause the leakage misjudgment is solved, the reliability and the sensitivity of the leakage detection are greatly improved, and the method is simple and practical and has wide application value.
In the electric leakage detection method of the distribution box, based on the condition that the electric leakage occurs in the distribution box, the incoming line magnetic field and the outgoing line magnetic field of the converging module of the metal backboard cannot be counteracted, so that larger induction potential and induction current are generated, the converging module generates eddy current effect, and the surface temperature of the metal backboard is increased, so that a comparison result between the acquired temperature information in the distribution box and the backboard temperature information of the metal backboard is used as a criterion for detecting the electric leakage of the distribution box, and under the condition that the comparison result between the temperature information in the distribution box and the backboard temperature information meets the preset detection condition, the temperature rise phenomenon caused by the eddy current effect of the converging module of the metal backboard can be judged, and therefore the electric leakage of the distribution box is monitored, the electric leakage fault of the distribution box is reflected by temperature, the reliability, the sensitivity and the anti-interference capability of the electric leakage detection can be effectively improved, and the application universality is achieved.
In one embodiment, the preset detection conditions include: the duration that the difference value of the temperature information in the box and the temperature information of the backboard exceeds the preset difference value threshold value is larger than or equal to the first preset time.
If the absolute value of the difference value between the temperature information in the box and the temperature information of the backboard is larger than or equal to a preset difference value threshold, and in order to further improve the detection accuracy, when the duration time of the difference value exceeding the preset difference value threshold reaches a first preset time, the occurrence of electric leakage of the circuit of the distribution box can be judged, and further the subsequent electric leakage protection measures can be triggered in time. That is, the present embodiment utilizes the difference between the in-tank temperature information and the back-plate temperature information to construct the leakage detection criterion.
Optionally, the preset difference threshold may be set within a range of 5 ℃ to 10 ℃, and it should be noted that the preset difference threshold should be adjusted according to an actual application scenario, and the value range of the preset difference threshold is not limited in this embodiment. For example, when the preset difference threshold is set to 5 ℃, the difference between the in-box temperature information and the back plate temperature information reaches 5 ℃, and the duration reaches the first preset time (for example, 5 s), it may be determined that the leakage fault occurs.
In one embodiment, the preset detection conditions include: the duration that the ratio of the in-box temperature information to the back plate temperature information exceeds the preset ratio threshold is greater than or equal to the second preset time.
If the ratio between the temperature information in the box and the temperature information of the backboard is greater than or equal to a preset ratio threshold, in order to further improve the detection accuracy, when the duration of the ratio exceeding the preset ratio threshold reaches a second preset time, the occurrence of electric leakage of the circuit of the distribution box can be judged. That is, the embodiment constructs the leakage detection criterion by using the ratio between the temperature information in the box and the temperature information of the back plate.
Optionally, the preset ratio threshold may be set in a range of 1.2-1.3, and it should be noted that the preset ratio threshold should be adjusted according to an actual application scenario, and the value range of the preset ratio threshold is not limited in this embodiment. For example, when the preset ratio threshold is set to 1.2, a rising phenomenon occurs in the temperature of the back plate, and the ratio of the back plate temperature information to the temperature information in the box reaches 1.2, and the second preset time (for example, 5 s) is continued, so that the occurrence of the leakage fault can be judged.
In one embodiment, the preset detection conditions include: the duration that the difference value of the temperature information in the box and the temperature information of the backboard exceeds the preset difference value threshold is larger than or equal to the first preset time, and the duration that the ratio of the temperature information in the box and the temperature information of the backboard exceeds the preset ratio threshold is larger than or equal to the second preset time.
If the absolute value of the difference value between the temperature information in the box and the temperature information of the backboard is larger than or equal to a preset difference value threshold, and the duration time when the difference value of the temperature information in the box and the temperature information of the backboard exceeds the preset difference value threshold reaches a first preset time, meanwhile, the ratio between the temperature information in the box and the temperature information of the backboard is larger than or equal to a preset ratio threshold, and when the duration time when the ratio of the temperature information in the box and the temperature information of the backboard exceeds the preset ratio threshold reaches a second preset time, the electric leakage of a circuit of the distribution box can be judged, and the difference value and the ratio between the temperature information in the box and the temperature information of the backboard are used as the criterion of electric leakage detection at the same time, so that the electric leakage detection precision is improved, and the detection erroneous judgment is reduced.
In the above embodiment, the temperature information in the box of the distribution box and the back plate temperature information of the metal back plate are used as monitoring values, the temperature difference value and/or the temperature ratio of the two are used to construct the criterion of leakage detection, and under the condition that the temperature difference value and/or the ratio of the two reach the preset threshold value and last for a preset time, the occurrence of leakage of the distribution box can be judged. Thus, the reliability of the electric leakage detection is improved, and the electric leakage detection based on the temperature can have higher sensitivity by setting the preset threshold value.
In one embodiment, the back plate temperature information of the metal back plate includes a plurality of back plate temperature information. Step S104, obtaining backboard temperature information of the metal backboard, comprising the following steps: and obtaining the average temperature value of the plurality of backboard temperature information of the metal backboard. Step S106, under the condition that the comparison result of the temperature information in the box and the temperature information of the backboard meets the preset detection condition, judging that the distribution box is leaked, comprising the following steps: and under the condition that the comparison result of the temperature information in the box and the average temperature value meets the preset detection condition, judging that the distribution box is subjected to electric leakage.
Optionally, a plurality of second temperature sensors are arranged on the metal backboard to monitor a plurality of backboard temperature information of the metal backboard in real time. Optionally, the second temperature sensors are uniformly distributed on the metal backboard. Therefore, the average value of the temperature information of the plurality of back plates of the metal back plate is obtained, comparison is carried out, so that whether the metal back plate is subjected to electric leakage monitoring is more accurate, and errors are reduced.
In one embodiment, the metal back plate is provided with a plurality of bus bar areas for arranging the bus bar modules, and the back plate temperature information of the metal back plate comprises a plurality of back plate temperature information of the bus bar areas. Optionally, each busbar area is provided with a second temperature sensor for acquiring the back plate temperature information of each busbar area.
The busbar area is provided with a plurality of threading holes for each electrical device to pass through the metal holes through the electrified conductor to conduct layout wiring on the rear side of the backboard. In order to further improve the accuracy of temperature monitoring, the temperature information of each busbar area can be characterized as the backboard temperature information of the metal backboard, wherein under the condition that the difference value or the ratio between the temperature information in the box and the temperature information of any busbar area reaches a preset threshold value and lasts for a preset time, the occurrence of electric leakage of the distribution box can be judged, and the difference value or the ratio between the temperature information in the box and the average temperature information of a plurality of busbar areas can also be used as a criterion of electric leakage detection.
In one embodiment, step S104 obtains back plate temperature information of the metal back plate, including: acquiring average temperature values of a plurality of backboard temperature information of a plurality of busbar areas; step S106, under the condition that the comparison result of the temperature information in the box and the temperature information of the backboard meets the preset detection condition, judging that the distribution box is leaked, comprising the following steps: and under the condition that the comparison result of the temperature information in the box and the average temperature value meets the preset detection condition, judging that the distribution box is subjected to electric leakage.
And if the absolute value of the difference value between the temperature information in the box and the average temperature value of the busbar areas is greater than or equal to a preset difference value threshold value, and when the duration time of the difference value exceeding the preset difference value threshold value reaches a first preset time, the circuit of the distribution box can be judged to have electric leakage. Or if the ratio between the temperature information in the box and the average temperature value of the busbar areas is greater than or equal to a preset ratio threshold, and when the duration of the ratio exceeding the preset ratio threshold reaches a second preset time, the occurrence of electric leakage of the circuit of the distribution box can be judged. Thus, a leakage detection criterion is constructed using the difference or ratio between the in-tank temperature information and the average temperature value of the plurality of bus areas.
In one embodiment, step S104 obtains back plate temperature information of the metal back plate, including the steps of: and acquiring temperature information of each backboard of each busbar area. Step S106, under the condition that the comparison result of the temperature information in the box and the temperature information of the backboard meets the preset detection condition, judging that the distribution box is leaked, comprising the following steps: under the condition that the comparison result of the temperature information in the box and the temperature information of the backboard meets the preset detection condition, the target busbar area of the distribution box is judged to be in electric leakage, wherein the target busbar area is the busbar area that the comparison result of the temperature information in the backboard and the temperature information in the box meets the preset detection condition.
If the absolute value of the difference value between the temperature information in the box and the back plate temperature information of a certain busbar area is larger than or equal to a preset difference value threshold value, and when the duration time of the difference value exceeding the preset difference value threshold value reaches a first preset time, the occurrence of electric leakage of the circuit of the target busbar area of the distribution box can be judged. Or if the ratio between the temperature information in the box and the back plate temperature information of a certain busbar area is greater than or equal to a preset ratio threshold, and when the duration of the ratio exceeding the preset ratio threshold reaches a second preset time, the occurrence of electric leakage of the line of the target busbar area of the distribution box can be judged. Therefore, a specific target bus area leakage detection criterion is constructed and judged by utilizing the difference value or the ratio between the temperature information in the box and the back plate temperature information of a certain bus area.
In one embodiment, the distribution box further includes a leakage protection module, and when the comparison result of the temperature information in the box and the temperature information of the back plate meets the preset detection condition, after determining that the target busbar area of the distribution box is leaked, the method further includes the following steps: the leakage protection module is controlled to disconnect the power-on path of the target bus area.
Under the condition that the distribution box is judged to have electric leakage, the electric leakage protection module can be controlled to disconnect the power-on path of the bus bar area with abnormal temperature rise, or cut off the power supply to play a role of electric leakage protection, so that the electricity utilization safety of a user is effectively ensured, and life and property loss is avoided.
In one embodiment, step S106 further includes the following steps after determining that the distribution box leaks electricity when the comparison result between the temperature information in the box and the temperature information of the back plate meets the preset detection condition: under the condition that the electric leakage of the distribution box is detected, an alarm signal is output, and the alarm signal is used for indicating the current electric leakage of the distribution box. Under the condition that the distribution box is judged to have electric leakage, an alarm signal can be uploaded to the master station system to prompt the current distribution box to have electric leakage faults.
In one embodiment, based on the same inventive concept, there is provided an electric leakage detecting device 100 of a distribution box, the distribution box including a metal back plate for providing a bus bar module, the electric leakage detecting device 100 of the distribution box including: a first temperature acquisition module 110, a second temperature acquisition module 120, and a detection module 130. The first temperature acquisition module 110 is used for acquiring temperature information in a box of the distribution box, the second temperature acquisition module 120 is used for acquiring back plate temperature information of the metal back plate, and the detection module 130 is used for judging that the distribution box is in electric leakage under the condition that a comparison result of the temperature information in the box and the back plate temperature information meets a preset detection condition.
According to the electric leakage detection device 100 of the distribution box, the obtained comparison result between the temperature information in the distribution box and the backboard temperature information of the metal backboard is used as the criterion for detecting the electric leakage of the distribution box, under the condition that the comparison result between the temperature information in the distribution box and the backboard temperature information meets the preset detection condition, the situation that the temperature rise phenomenon occurs due to the eddy current effect of the bus module of the metal backboard can be judged, so that the electric leakage of the distribution box is monitored, the electric leakage fault of the distribution box is reflected by the temperature, the reliability, the sensitivity and the anti-interference capability of the electric leakage detection can be effectively improved, the electric leakage detection device is still applicable under the conditions that the system distribution capacitance current is larger and the fault electric leakage resistance is higher, and the electric leakage detection device has application universality and wide application value.
In one embodiment, the detection module 130 is configured to determine that the electrical leakage occurs in the electrical box when a duration of a difference between the temperature information in the electrical box and the temperature information of the back panel exceeds a preset difference threshold is greater than or equal to a first preset time.
In one embodiment, the detection module 130 is configured to determine that the electrical leakage occurs in the electrical box when a duration of a time period during which a ratio of the temperature information in the electrical box to the temperature information of the back plate exceeds a preset ratio threshold is greater than or equal to a second preset time period.
In one embodiment, the detection module 130 is configured to determine that the distribution box leaks when the duration of the difference between the in-box temperature information and the back plate temperature information exceeds the preset difference threshold is greater than or equal to a first preset time, and the duration of the ratio of the in-box temperature information and the back plate temperature information exceeds the preset ratio threshold is greater than or equal to a second preset time.
In one embodiment, the second temperature obtaining module 120 is configured to obtain an average temperature value of a plurality of back plate temperature information of the metal back plate, and the detecting module 130 is configured to determine that the distribution box is leaking electricity when a comparison result between the in-box temperature information and the average temperature value meets a preset detection condition.
In one embodiment, the metal back plate is provided with a plurality of bus bar areas for setting the bus bar modules, the back plate temperature information of the metal back plate includes a plurality of back plate temperature information of the bus bar areas, the number of the second temperature acquisition modules 120 is a plurality of, the plurality of second temperature acquisition modules 120 are used for acquiring average temperature values of the back plate temperature information of the bus bar areas, and the detection module 130 is used for determining that the distribution box is leaked when a comparison result of the in-box temperature information and the average temperature values meets a preset detection condition. Optionally, a second temperature acquisition module 120 is disposed in each busbar area, for acquiring the back plate temperature information of each busbar area.
In one embodiment, the metal back plate is provided with a plurality of bus bar areas for setting the bus bar modules, the back plate temperature information of the metal back plate includes a plurality of back plate temperature information of the bus bar areas, the number of the second temperature acquisition modules 120 is a plurality of, the plurality of second temperature acquisition modules 120 are used for acquiring each back plate temperature information of each bus bar area, and the detection module 130 is used for judging that the electric leakage occurs in the target bus bar area of the distribution box when the comparison result of the in-box temperature information and the back plate temperature information meets the preset detection condition, wherein the target bus bar area is the bus bar area where the comparison result of the back plate temperature information and the in-box temperature information meets the preset detection condition. Optionally, a second temperature acquisition module 120 is disposed in each busbar area, for acquiring the back plate temperature information of each busbar area.
In one embodiment, the leakage detection device of the distribution box further comprises a leakage protection module 140, wherein the leakage protection module 140 is used for controlling to disconnect the power supply of the distribution box so as to disconnect the power path of the target busbar area.
The first temperature obtaining module 110, the second temperature obtaining module 120, the detecting module 130, and the leakage protection module 140 refer to the related descriptions in the above embodiments, and are not described herein again.
In one embodiment, there is provided a power distribution box comprising: the electric leakage detection circuit is connected with the first temperature sensing module and the second temperature sensing module respectively and is used for judging that the distribution box is in electric leakage under the condition that the comparison result of the box temperature information and the backboard temperature information meets the preset detection condition.
Above-mentioned block terminal produces the vortex effect and leads to appearing generating heat the phenomenon under the electric leakage condition based on the metal backplate, through the comparison result between the incasement temperature information of comprehensive utilization block terminal and the backplate temperature information of metal backplate as the criterion that detects the block terminal and take place the electric leakage, under the condition that the comparison result of incasement temperature information and backplate temperature information satisfies the detection condition of predetermineeing, can judge that the current collection module of metal backplate produces the vortex effect and leads to appearing the temperature to rise the phenomenon because of the electric leakage to realize monitoring block terminal and take place the electric leakage, effectively improve block terminal electric leakage detection reliability and sensitivity.
In one embodiment, the leakage detection circuit is configured to determine that the distribution box leaks when a duration of a difference between the temperature information in the box and the temperature information of the back plate exceeding a preset difference threshold is greater than or equal to a first preset time.
In one embodiment, the leakage detection circuit is configured to determine that the distribution box leaks when a duration of a ratio of the temperature information in the box to the temperature information of the back plate exceeding a preset ratio threshold is greater than or equal to a second preset time.
In one embodiment, the leakage detection circuit is configured to determine that the distribution box leaks when a duration of a difference between the temperature information in the box and the temperature information of the back plate exceeds a preset difference threshold is greater than or equal to a first preset time, and when a duration of a ratio of the temperature information in the box and the temperature information of the back plate exceeds a preset ratio threshold is greater than or equal to a second preset time.
In one embodiment, the second temperature sensing module is configured to obtain an average temperature value of a plurality of back plate temperature information of the metal back plate, and the leakage detection circuit is configured to determine that the distribution box leaks when a comparison result between the temperature information in the box and the average temperature value meets a preset detection condition.
In one embodiment, the metal backboard is provided with a plurality of busbar areas for setting busbar modules, backboard temperature information of the metal backboard comprises a plurality of backboard temperature information of the busbar areas, the number of the second temperature sensing modules is a plurality of, the plurality of second temperature sensing modules are used for obtaining average temperature values of the backboard temperature information of the busbar areas, and the electric leakage detection circuit is used for judging that the distribution box is leaked under the condition that a comparison result of the temperature information in the box and the average temperature value meets a preset detection condition. Optionally, each busbar area is provided with a second temperature sensing module for acquiring the back plate temperature information of each busbar area.
In one embodiment, the metal backboard is provided with a plurality of busbar areas for setting busbar modules, backboard temperature information of the metal backboard comprises a plurality of backboard temperature information of the busbar areas, the number of the second temperature sensing modules is a plurality of, the plurality of second temperature sensing modules are used for obtaining the backboard temperature information of each busbar area, and the electric leakage detection circuit is used for judging that electric leakage occurs in a target busbar area of the distribution box under the condition that the comparison result of the temperature information in the box and the backboard temperature information meets the preset detection condition, wherein the target busbar area is the busbar area that the comparison result of the backboard temperature information and the temperature information in the box meets the preset detection condition. Optionally, each busbar area is provided with a second temperature sensing module for acquiring the back plate temperature information of each busbar area.
In one embodiment, the electrical box further comprises a leakage protection module for controlling disconnection of the electrical box power to disconnect the power path of the target bus bar area.
The metal back plate, the first temperature sensing module, the second temperature sensing module, the leakage detection circuit and the leakage protection module refer to the related descriptions in the above embodiments, and are not described herein again.
In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored which, when executed by a processor, carries out the steps of the method embodiments described above.
In an embodiment, a computer program product is provided, comprising a computer program which, when executed by a processor, implements the steps of the method embodiments described above.
It should be understood that, although the steps in the flowchart are shown in sequence as indicated by the arrows, the steps are not necessarily performed in sequence as indicated by the arrows. The steps are not strictly limited to the order of execution unless explicitly recited herein, and the steps may be executed in other orders. Moreover, at least a portion of the steps in the flowcharts may include a plurality of steps or stages that are not necessarily performed at the same time, but may be performed at different times, and the order of execution of the steps or stages is not necessarily sequential, but may be performed in rotation or alternately with at least a portion of the steps or stages in other steps or other steps.
In the description of the present specification, reference to the terms "some embodiments," "other embodiments," "ideal embodiments," and the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic descriptions of the above terms do not necessarily refer to the same embodiment or example.
The technical features of the above embodiments may be arbitrarily combined, and for brevity, all of the possible combinations of the technical features of the above embodiments are not described, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the claims. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.
Claims (8)
1. The utility model provides a leakage detection method of block terminal, its characterized in that, the block terminal includes the metal backplate that is used for setting up the module that converges, the metal backplate is equipped with the through wires hole for the conductor to pass through the through wires hole is located the metal backplate deviates from the one side of module that converges, the conductor includes inlet wire conductor and outlet wire conductor, the leakage detection method of block terminal includes:
acquiring temperature information in the distribution box;
acquiring backboard temperature information of the metal backboard;
judging that the distribution box is subjected to electric leakage under the condition that the comparison result of the temperature information in the box and the temperature information of the backboard meets the preset detection condition;
under the condition that electric leakage occurs in the distribution box, the size of an incoming magnetic field of the converging module is unequal to the size of an outgoing magnetic field to generate an eddy effect, so that the surface temperature of the metal backboard is increased, the incoming magnetic field is a magnetic field generated by an incoming conductor, and the outgoing magnetic field is a magnetic field generated by an outgoing conductor.
2. The electrical leakage detection method of an electrical distribution box according to claim 1, wherein the preset detection conditions include: the duration that the difference value of the temperature information in the box and the back plate temperature information exceeds a preset difference value threshold value is larger than or equal to a first preset time; and/or
The duration that the ratio of the in-box temperature information to the back plate temperature information exceeds a preset ratio threshold is greater than or equal to a second preset time.
3. The electrical leakage detection method of the electrical distribution box according to claim 1, wherein the back plate temperature information of the metal back plate includes a plurality of back plate temperature information, and the obtaining the back plate temperature information of the metal back plate includes:
acquiring average temperature values of a plurality of backboard temperature information of the metal backboard;
under the condition that the comparison result of the temperature information in the box and the temperature information of the back plate meets the preset detection condition, the electric leakage of the distribution box is judged, and the method comprises the following steps:
and under the condition that the comparison result of the temperature information in the box and the average temperature value meets the preset detection condition, judging that the distribution box is subjected to electric leakage.
4. The electrical leakage detection method of an electrical distribution box according to claim 1, wherein the metal back plate is provided with a plurality of bus bar areas for providing the bus bar modules, and back plate temperature information of the metal back plate includes a plurality of back plate temperature information of the plurality of bus bar areas.
5. The electrical leakage detection method of the electrical box according to claim 4, wherein the obtaining the back plate temperature information of the metal back plate comprises:
acquiring average temperature values of a plurality of backboard temperature information of a plurality of bus bar areas;
under the condition that the comparison result of the temperature information in the box and the temperature information of the back plate meets the preset detection condition, the electric leakage of the distribution box is judged, and the method comprises the following steps:
and under the condition that the comparison result of the temperature information in the box and the average temperature value meets the preset detection condition, judging that the distribution box is subjected to electric leakage.
6. The electrical leakage detection method of the electrical box according to claim 4, wherein the obtaining the back plate temperature information of the metal back plate comprises:
acquiring temperature information of each backboard of each busbar area;
under the condition that the comparison result of the temperature information in the box and the temperature information of the back plate meets the preset detection condition, the electric leakage of the distribution box is judged, and the method comprises the following steps:
and under the condition that the comparison result of the temperature information in the box and the temperature information of the back plate meets the preset detection condition, judging that the electric leakage occurs in the target busbar area of the distribution box, wherein the target busbar area is the busbar area of which the comparison result of the temperature information in the box and the temperature information of the back plate meets the preset detection condition.
7. The electrical leakage detection method according to claim 6, wherein the electrical box further comprises an electrical leakage protection module, and when the comparison result between the temperature information in the electrical box and the temperature information of the back plate meets a preset detection condition, determining that the electrical leakage occurs in the target busbar area of the electrical box further comprises:
and controlling the leakage protection module to disconnect the power-on path of the target busbar area.
8. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the method of any of claims 1 to 7.
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10239404A (en) * | 1997-02-27 | 1998-09-11 | Fujitsu Ltd | Leak current detection method and leak current detection device |
| KR100655263B1 (en) * | 2005-07-27 | 2006-12-08 | 박기주 | Breaker trip system of digital distribution board |
| KR20070074321A (en) * | 2006-01-09 | 2007-07-12 | 길경석 | Arrestor diagnosis method and device by temperature measurement |
| CN202454905U (en) * | 2011-10-08 | 2012-09-26 | 巴斯威尔股份有限公司 | Plug-in power distributor |
| CN103457236A (en) * | 2013-07-04 | 2013-12-18 | 万能亿自动化科技（苏州）有限公司 | Distribution box protection module |
| WO2020171189A1 (en) * | 2019-02-21 | 2020-08-27 | 日本テクノ株式会社 | Automatic security check system for cubicle (high-voltage power reception equipment) |
| CN115407234A (en) * | 2021-05-28 | 2022-11-29 | 天合光能股份有限公司 | Detection system and detection method for photovoltaic cell |
| CN116001627A (en) * | 2022-12-30 | 2023-04-25 | 国网北京市电力公司 | Electromagnetic leakage monitoring method and device, storage medium and processor |
| KR102561365B1 (en) * | 2023-04-12 | 2023-07-31 | 주식회사 유니온 | Deep learning system for abnormal phenomenon detection in the underground power distribution line |
-
2023
- 2023-09-13 CN CN202311176663.4A patent/CN116930816B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10239404A (en) * | 1997-02-27 | 1998-09-11 | Fujitsu Ltd | Leak current detection method and leak current detection device |
| KR100655263B1 (en) * | 2005-07-27 | 2006-12-08 | 박기주 | Breaker trip system of digital distribution board |
| KR20070074321A (en) * | 2006-01-09 | 2007-07-12 | 길경석 | Arrestor diagnosis method and device by temperature measurement |
| CN202454905U (en) * | 2011-10-08 | 2012-09-26 | 巴斯威尔股份有限公司 | Plug-in power distributor |
| CN103457236A (en) * | 2013-07-04 | 2013-12-18 | 万能亿自动化科技（苏州）有限公司 | Distribution box protection module |
| WO2020171189A1 (en) * | 2019-02-21 | 2020-08-27 | 日本テクノ株式会社 | Automatic security check system for cubicle (high-voltage power reception equipment) |
| CN115407234A (en) * | 2021-05-28 | 2022-11-29 | 天合光能股份有限公司 | Detection system and detection method for photovoltaic cell |
| CN116001627A (en) * | 2022-12-30 | 2023-04-25 | 国网北京市电力公司 | Electromagnetic leakage monitoring method and device, storage medium and processor |
| KR102561365B1 (en) * | 2023-04-12 | 2023-07-31 | 주식회사 유니온 | Deep learning system for abnormal phenomenon detection in the underground power distribution line |
Non-Patent Citations (2)
| Title |
|---|
| 建筑电气的节能与供配电线路设计;蔡薇薇;《集成电路应用》;第37卷(第08期);第100-101页 * |
| 红外热成像仪在变电运维工作中的应用;刘亚洲;《农村电工》(第04期);第46页 * |
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