CN107167654A - Suitable for the intelligent electric meter terminal and management of power use method of multi-user - Google Patents

Abstract

The invention discloses a kind of intelligent electric meter terminal and management of power use method suitable for multi-user, the wherein terminal includes：Wiring bus, an inlet wire and a plurality of outlet, every outlet one user of correspondence；The inlet wire is connected to wiring bus by electric energy total amount module, and every outlet passes sequentially through a sub switch, a sub- metering module of electric energy and a voltage x current instantaneous value sub-sampling module and is connected to wiring bus；The electric energy total amount module and the sub- metering module of electric energy are connected with read write line respectively；The information that the read write line is used in electric card.

Description

Smart meter terminal and power consumption management method applicable to multiple users

technical field

The invention relates to the field of smart meters, in particular to a smart meter terminal suitable for multiple users and a method for managing electricity consumption.

Background technique

A smart meter is an intelligent terminal of a smart grid. It is no longer an electric energy meter in the traditional sense. In addition to the basic electricity consumption measurement function of a traditional electric energy meter, a smart electric meter is designed to meet the development needs of the smart grid and connect a large number of distributed clean energy generation It should also have accurate two-way multi-rate metering function, user-side control function, two-way data communication function of multiple data transmission modes, support for multi-user and multi-scenario use, support for electricity price curve release and time-of-use electricity price Intelligent functions such as billing, real-time collection and transmission of voltage and current data, and value-added services based on the "Internet +" idea, smart meters represent the future development direction of energy-saving smart grid end-user intelligent terminals.

At present, smart meters have been widely used in the field. Compared with traditional electric energy meters, they have greatly improved in terms of billing accuracy and flexibility, automation of meter reading, and scientific management of electricity charges. There are still some problems and deficiencies in many aspects, which are mainly reflected in the following aspects:

(1) The billing function under multi-user and multi-scenario needs to be improved. At present, the application scenarios of smart meters are mostly "one household, one meter", with clear objects and single application scenarios. Although some electric meters also support multi-user billing, they are generally physical extensions or superpositions at the hardware level of ordinary electric meters in terms of principle and structure. With the increase of user types and the diversification of application scenarios, the metering, billing, management and control functions of existing electric meters cannot meet the requirements, and solutions that meet the needs of multiple users and multiple scenarios must be proposed;

(2) It does not have perfect real-time acquisition and upload functions of voltage and current instantaneous values. At present, electric meters generally only collect information such as electric energy (including active electric energy and reactive electric energy), voltage frequency, etc., and do not have the real-time uninterrupted sampling function of instantaneous values of voltage and current. Collecting the instantaneous value information of voltage and current plays an important role in analyzing the user's power quality, monitoring user load in real time, completing accurate load modeling and user-side demand management functions.

Contents of the invention

In order to solve the shortcomings of the prior art, the first purpose of the present invention is to provide a smart meter terminal suitable for multiple users.

A smart meter terminal suitable for multi-users of the present invention includes a wiring bus, an incoming line and multiple outgoing lines, and each outgoing line corresponds to a user; the incoming lines are connected to the wiring bus through a total electric energy metering module, and each outgoing line All are connected to the wiring bus through a sub-switch, an electric energy sub-metering module and a voltage and current instantaneous value sampling module in turn; the electric energy total metering module and the electric energy sub-metering module are respectively connected to the reader; information on the card.

Further, the incoming line adopts a three-phase four-wire system. Such a connection mode takes into account different types of users, and can be applied to different types of users.

Further, a main switch is connected in series between the incoming line and the total metering module. The conduction and disconnection between the incoming line and the total metering module are controlled by the main switch.

Further, the outgoing line is a three-phase line or a single-phase line. According to the actual power consumption of the user, the outgoing line can be set as a three-phase line or a single-phase line.

Further, the total electric energy metering module and the electric energy sub-metering module are respectively connected to the display module. The electric energy information measured by the electric energy total metering module and the electric energy sub-metering module is displayed through the display module.

Further, the total electric energy metering module, the electric energy sub-metering module, the voltage and current instantaneous value sampling module of the incoming line and each outgoing line are respectively connected to a cloud server, and the cloud server is connected to a remote monitoring terminal.

The present invention also uses the cloud server to transmit the electric energy information measured by the electric energy total metering module and the electric energy sub-metering module and the instantaneous sampling values of the voltage and current of the incoming line and each outgoing line to the remote end, so as to realize the information of electric energy information, load information and electric energy quality information. Remote real-time monitoring.

The second object of the present invention is to provide a method for managing electricity consumption of a smart meter terminal suitable for multiple users.

The method for managing electricity consumption of smart meter terminals applicable to multiple users of the present invention is applicable to occasions where multiple outgoing lines and multiple users use electricity at the same time, including:

Step 1: Bind the electric card with the outgoing line number of the smart meter terminal. Each electric card corresponds to one outgoing line, and each electric card can only operate the corresponding switch of the bound outgoing line; among them, the precharge in the electric card There is an electricity fee; each card has an electric card number, and each electric card number corresponds to the outgoing line number;

Step 2: Use the reader to scan the electronic card and obtain the electronic card number, verify the legality and validity of the electronic card and the corresponding outgoing line number, and read the balance in the electronic card;

Step 3: Write part or all of the balance in the electric card into the smart meter terminal, close the switch corresponding to the outgoing line, and the corresponding electric energy sub-metering module starts to work, and deduct the balance in the smart meter terminal according to the electricity consumption until the balance is low at the preset threshold.

Further, the electric energy measured in the total electric energy metering module and the electric energy sub-metering module is also transmitted to the remote monitoring terminal via the cloud server for real-time monitoring.

The present invention also provides another power management method applicable to multi-user smart meter terminals. The method is suitable for occasions where there is a single outgoing line and multiple users use electricity sequentially, including:

Step 1: Bind the electric card with the smart meter, and each smart meter corresponds to multiple user cards; when a user needs electricity, use the reader to read the electric card number and the balance in the card , and judge the validity of the electric card and whether the balance in the card is greater than the preset threshold value. If the above judgments are all established, the switch of the corresponding outgoing line is controlled to be closed, and the smart meter is started to enter the working state;

Step 2: After the smart meter enters the working state, billing starts according to the current electricity price, collects and records voltage and current information, and calculates whether the balance in the card is sufficient. If there is insufficient balance, it sends an alarm message and disconnects the outgoing switch to stop power supply.

When the smart meter is working normally, it will no longer accept the operation of other card users, so as to ensure that only one user is provided with electricity service within a certain period of time.

The beneficial effects of the present invention are:

(1) The present invention provides a technical solution for multiple users to share one electric meter by transforming the structure of the existing electric meter, and provides functions of power interruption control and electric energy metering for multiple users respectively. The invention transforms the electric meter into a structure with one incoming line and multiple sets of outgoing lines, wherein each outgoing line corresponds to a user, and each incoming line and each outgoing line includes a switch and an electric energy metering module, which can realize the power interruption of the incoming line and any outgoing line control, energy metering. Electricity fee management adopts radio frequency card or IC card type electric card. One electric meter can correspond to multiple electric cards, and each card corresponds to one user. It can independently store electric charge and operate the electric meter independently.

(2) The present invention adds a voltage and current instantaneous value sampling module for the incoming line and each outgoing line by transforming the existing electric meter structure, which can collect the instantaneous value information of the corresponding voltage and current in real time and continuously, and send the sampling information to the cloud Server, which is convenient for analyzing user's power quality, monitoring user load in real time, completing accurate load modeling and user-side demand management functions

(3) The smart meter terminal applicable to multiple users of the present invention can meet the requirements for the smart meter terminal in situations such as simultaneous power consumption by multiple users and sequential power consumption by multiple users. In the case of multiple users using electricity at the same time, bind the electric card with the outgoing line number of the smart meter terminal. Each electric card corresponds to one outgoing line. Each electric card can only operate the bound outgoing line switch. The electric card can only view the data of the outgoing line measurement and metering module, and cannot operate other unbound outgoing line switches in the same meter, nor can it view the data of other outgoing electric energy metering modules, so as to ensure the independence and user data of each user privacy. In the case of sequential power consumption by multiple users, a smart meter terminal can be bound to multiple power cards, but only one user is allowed to operate the meter within a period of time, and does not respond to other users' operations until the current user finishes the operation. In this way, the orderly power consumption of multiple users is guaranteed.

Description of drawings

FIG. 1 is a schematic structural diagram of a smart meter terminal suitable for multiple users according to the present invention.

FIG. 2 is a flow chart of Embodiment 1 of the method for managing electricity consumption of a smart meter terminal applicable to multiple users according to the present invention.

FIG. 3 is a flow chart of Embodiment 2 of the method for managing electricity consumption of a multi-user smart meter terminal according to the present invention.

detailed description

Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

FIG. 1 is a schematic structural diagram of a smart meter terminal suitable for multiple users according to the present invention. The smart meter terminal suitable for multiple users as shown in Figure 1 includes a wiring bus, an incoming line and multiple outgoing lines, and each outgoing line corresponds to a user; the incoming line passes through the total electric energy metering module and the instantaneous voltage and current value sampling module Connected to the wiring bus, each outgoing line is connected to the wiring bus through a sub-switch, an electric energy sub-metering module and a voltage and current instantaneous value sampling sub-module in turn; the electric energy total metering module and the electric energy sub-metering module are respectively connected to the reader connected; the reader is used for the information on the electric card.

Among them, the electric energy total metering module, the electric energy sub-metering module and the voltage and current instantaneous value sampling module are respectively composed of an electric energy metering chip and a voltage and current instantaneous value acquisition chip.

The electric energy metering chip and the voltage and current instantaneous value acquisition chip can be realized by using existing chips.

The reader is used to scan the electronic card information, and the electronic card is a radio frequency card or an IC card.

Further, the incoming line adopts a three-phase four-wire system. Such a connection mode takes into account different types of users, and can be applied to different types of users.

Further, a main switch is connected in series between the incoming line and the total metering module. The conduction and disconnection between the incoming line and the total metering module are controlled by the main switch.

Further, the outgoing line is a three-phase line or a single-phase line. According to the user's actual power consumption, the outgoing line can be set as a three-phase line or a single-phase line.

Further, the total electric energy metering module and the electric energy sub-metering module are respectively connected to the display module. The electric energy information measured by the electric energy total metering module and the electric energy sub-metering module is displayed through the display module. Wherein, the display module is a display screen.

Further, the total electric energy metering module, the electric energy sub-metering module and the instantaneous voltage and current value acquisition module are respectively connected to a cloud server, and the cloud server is connected to a remote monitoring terminal. The present invention also uses the cloud server to transmit the electric energy information measured by the electric energy total metering module, the electric energy sub-metering module and the voltage and current instantaneous value acquisition module and the sampling information of the voltage and current instantaneous value to the remote end, so as to realize electric energy information, load information, and electric energy quality information remote real-time monitoring.

The present invention provides a technical solution for multiple users to share one electric meter by transforming the structure of the existing electric meter, and provides the functions of power cut-off control, electric energy metering function and voltage and current instantaneous value sampling function for multiple users respectively. The invention transforms the electric meter into a structure with one incoming line and multiple sets of outgoing lines, wherein each outgoing line corresponds to a user, and each incoming line and each outgoing line includes a switch, an electric energy metering module, and a voltage and current instantaneous value acquisition module, which can monitor the incoming line And any outgoing line to realize power off control, power metering and instantaneous value sampling of voltage and current. Electricity fee management adopts radio frequency card or IC card type electric card. One electric meter can correspond to multiple electric cards, and each card corresponds to one user. It can independently store electric charge and operate the electric meter independently.

Fig. 2 is a flow chart of Embodiment 1 of the method for managing electricity consumption of a smart meter terminal applicable to multiple users according to the present invention. The method is applicable to occasions where multiple outgoing lines and multiple users consume electricity at the same time, including:

Step 1: Bind the electric card with the outgoing line number of the smart meter terminal. Each electric card corresponds to one outgoing line, and each electric card can only operate the corresponding switch of the bound outgoing line; among them, the precharge in the electric card There is an electricity fee; each card has an electric card number, and each electric card number corresponds to the outgoing line number;

Step 2: Use the reader to scan the electronic card and obtain the electronic card number, verify the legality and validity of the electronic card and the corresponding outgoing line number, and read the balance in the electronic card;

Step 3: Write part or all of the balance in the electric card into the smart meter terminal, close the switch corresponding to the outgoing line, and the corresponding electric energy sub-metering module starts to work, and deduct the balance in the smart meter terminal according to the electricity consumption until the balance is low at the preset threshold.

Furthermore, the power information and voltage and current instantaneous value sampling information measured by the total electric energy metering module, the electric energy sub-metering module and the voltage and current instantaneous value acquisition module will also be transmitted to the cloud server to the remote end to realize power information, load information, and power quality information. remote real-time monitoring.

FIG. 3 is a flow chart of Embodiment 2 of the method for managing electricity consumption of a multi-user smart meter terminal according to the present invention. The method shown in the figure is suitable for occasions where there is a single outgoing line and multiple users use electricity sequentially, including:

Step 1: Bind the electric card with the smart meter, and each smart meter corresponds to multiple user cards; when a user needs electricity, use the reader to read the electric card number and the balance in the card , and judge the validity of the electric card and whether the balance in the card is greater than the preset threshold value. If the above judgments are all established, the switch of the corresponding outgoing line is controlled to be closed, and the smart meter is started to enter the working state;

Step 2: After the smart meter enters the working state, billing starts according to the current electricity price, collects and records voltage and current information, and calculates whether the balance in the card is sufficient. If there is insufficient balance, it sends an alarm message and disconnects the outgoing switch to stop power supply.

When the smart meter is working normally, it will no longer accept the operation of other users' electric cards, so as to ensure that only one user is provided with electricity service within a certain period of time.

When the user needs to stop using electricity, put the electric card close to the reader of the smart meter again. When the smart meter judges that the electric card is the same electric card as the electric card that starts the electric meter, the user is allowed to stop the power supply and measure the electricity bill. At the same time, the electricity bill in the electricity consumption cycle is settled, and the new electricity bill balance is rewritten into the user's electric card through the read-write module.

The intelligent electric meter terminal applicable to multiple users of the present invention can meet the requirements for the intelligent electric meter terminal in situations such as simultaneous power consumption by multiple users and sequential power consumption by multiple users. In the case of multiple users using electricity at the same time, bind the electric card with the outgoing line number of the smart meter terminal. Each electric card corresponds to one outgoing line. Each electric card can only operate the bound outgoing line switch. The electric card can only view the data of the outgoing line measurement and metering module, and cannot operate other unbound outgoing line switches in the same meter, nor can it view the data of other outgoing electric energy metering modules, so as to ensure the independence and user data of each user privacy. In the case of sequential power consumption by multiple users, a smart meter terminal can be bound to multiple power cards, but only one user is allowed to operate the meter within a period of time, and does not respond to other users' operations until the current user finishes the operation. In this way, the orderly power consumption of multiple users is guaranteed.

Although the specific implementation of the present invention has been described above in conjunction with the accompanying drawings, it does not limit the protection scope of the present invention. Those skilled in the art should understand that on the basis of the technical solution of the present invention, those skilled in the art do not need to pay creative work Various modifications or variations that can be made are still within the protection scope of the present invention.

Claims (10)

1. a kind of intelligent electric meter terminal suitable for multi-user, it is characterised in that including：Wiring bus, an inlet wire and a plurality of Outlet, every outlet one user of correspondence；The inlet wire is connected to wiring bus by electric energy total amount module, and every outlet is equal Pass sequentially through a sub switch, a sub- metering module of electric energy and a voltage x current instantaneous value sampling module and be connected to wiring mother Line；The electric energy total amount module and the sub- metering module of electric energy are connected with read write line respectively；The read write line is used in electric card Information.

2. a kind of intelligent electric meter terminal suitable for multi-user as claimed in claim 1, it is characterised in that inlet wire uses three-phase Four-wire system wiring.

3. a kind of intelligent electric meter terminal suitable for multi-user as claimed in claim 1 or 2, it is characterised in that inlet wire with always Master switch is also serially connected between metering module.

4. a kind of intelligent electric meter terminal suitable for multi-user as claimed in claim 1, it is characterised in that outlet is triple line Road or uniline.

5. a kind of intelligent electric meter terminal suitable for multi-user as claimed in claim 1, it is characterised in that the electric energy is amounted to Amount module and the sub- metering module of electric energy are also connected with display module respectively.

6. a kind of intelligent electric meter terminal suitable for multi-user as claimed in claim 1, it is characterised in that the electric energy is amounted to Measure module, the sub- metering module of electric energy, inlet wire and each bar outlet voltage x current instantaneous value sampling module also respectively with cloud service Device is connected, and the cloud server is connected with remote monitoring terminal.

7. a kind of management of power use side of intelligent electric meter terminal suitable for multi-user as any one of claim 1-6 Method, it is characterised in that this method is applied to the occasion of a plurality of outlet and multiple users electricity consumption simultaneously, including：

Step 1：The outlet numbering of electric card and intelligent electric meter terminal is bound, every electric card one outlet of correspondence, every electricity Card can only be operated to the respective switch of bound outlet；Wherein, the electricity charge are pre-charged with electric card；Every is arranged with an electricity Card numbering, each electric card numbering is numbered with outlet to be corresponded；

Step 2：Electric card is scanned using read write line and electric card numbering is obtained, and the legal validity and corresponding outlet for verifying electric card are compiled Number, read remaining sum in electric card；

Step 3：Part or all of remaining sum in electric card is written in intelligent electric meter terminal, the switch of correspondence outlet is closed, The corresponding sub- metering module of electric energy is started working, and the remaining sum in intelligent electric meter terminal is deducted according to electricity consumption situation, until remaining sum is less than Predetermined threshold level.

8. a kind of management of power use method of intelligent electric meter terminal suitable for multi-user as claimed in claim 7, its feature exists In electric energy, the voltage x current instantaneous value of collection measured in the sub- metering module of electric energy and voltage x current instantaneous value sampling module Information is also sent to remote monitoring terminal through cloud server and monitored in real time.

9. a kind of management of power use side of intelligent electric meter terminal suitable for multi-user as any one of claim 1-6 Method, it is characterised in that this method is applied to the occasion of wall scroll outlet and multiple user's order electricity consumptions, including：

Step 1：Electric card is bound with intelligent electric meter, each intelligent electric meter correspond to multiple subscriber cards；When some user has During need for electricity, the electric card for reading electric card using read write line is numbered with blocking interior remaining sum, and judges that the validity and card of electric card are interior Whether remaining sum is more than predetermined threshold level, if above-mentioned judgement is set up, controls the switch of corresponding outlet to close, and starts intelligent electric meter Into working condition；

Step 2：Intelligent electric meter enters after working condition starts charging by current electricity prices, gathers and recording voltage current information, together When whether calculate remaining sum in card sufficient, send warning information if there is the situation that Sorry, your ticket has not enough value and disconnect the switch of outlet, stop Power supply.

10. a kind of management of power use method of intelligent electric meter terminal suitable for multi-user as claimed in claim 8, its feature exists In no longer receiving the operation of other user's electric cards during intelligent electric meter normal work, it is ensured that only carried in certain time for a user For power supply service.