Control device and electric energy metering equipment

Abstract

The utility model relates to a control device and electric energy metering equipment, and relates to the technical field of ammeters. The control device is arranged in the electric energy metering equipment and comprises a control unit, a current sampling unit and an action execution unit, wherein the current sampling unit is connected with a power supply end of a main loop in the electric energy metering equipment, the current sampling unit is connected with the control unit, the control unit is connected with a control end of the action execution unit, and an execution end of the action execution unit is further used for being mechanically connected with a control end of a switch unit on the main loop. Therefore, the functions of the external Bluetooth circuit breaker of the electric energy metering equipment in the prior art are integrated in the electric energy metering equipment, and the size and the structure of the electric energy metering equipment do not need to be changed, so that the production cost and the maintenance cost are reduced, and many problems caused by the external Bluetooth circuit breaker of the intelligent electric meter in the prior art are solved.

Description

Technical Field

[0001] This application relates to the field of electricity meter technology, and more specifically, to a control device and an electricity metering equipment. Background Technology

[0002] With the improvement of socio-economic development and the continuous progress of science and technology, the development of smart meters has entered a more mature and sophisticated stage. Technological upgrades and product updates have become indispensable parts of the development of smart meters. These advancements not only bring users more accurate and reliable electricity metering services but also significantly extend the lifespan of the meters, thereby reducing users' long-term maintenance costs. Furthermore, with the continuous advancement of smart meter technology, the requirements for its monitoring capabilities are also increasing.

[0003] Currently, most smart meters use external Bluetooth circuit breakers or backup circuit breakers to monitor and control the power system.

[0004] However, this approach results in a long development cycle and high development and maintenance costs for the Bluetooth circuit breaker or backup circuit breaker, as the smart meter and the Bluetooth circuit breaker or backup circuit breaker are two separate modules, and the chips of the Bluetooth circuit breaker or backup circuit breaker need to be customized, which makes it impossible to mass-produce the smart meter. Utility Model Content

[0005] The purpose of this application is to provide a control device and an energy metering device, which integrates the functions of the external Bluetooth circuit breaker or backup circuit breaker in the existing energy metering device into the energy metering device, without changing the size and structure of the energy metering device, thereby reducing production and maintenance costs and solving many problems caused by the external Bluetooth circuit breaker in the existing smart meter.

[0006] To achieve the above objectives, the technical solutions adopted in the embodiments of this application are as follows:

[0007] In a first aspect, embodiments of this application provide a control device for installation in an energy metering device, the control device comprising: a control unit, a current sampling unit, and an action execution unit;

[0008] The current sampling unit is connected to the power supply terminal of the main circuit in the power metering device, the current sampling unit is connected to the control unit, the control unit is connected to the control terminal of the action execution unit, and the execution terminal of the action execution unit is also used to mechanically connect to the control terminal of the switching unit on the main circuit.

[0009] Optionally, the control device further includes: a voltage sampling unit;

[0010] The voltage sampling unit is connected to the power supply terminal of the main circuit, and the voltage sampling unit is also connected to the control unit.

[0011] Optionally, the control device further includes: a signal processing unit; the current sampling unit and the voltage sampling unit are respectively connected to the first input terminal and the second input terminal of the signal processing unit, and the first output terminal and the second output terminal of the signal processing unit are connected to the control unit.

[0012] Optionally, the control device further includes a metering unit, wherein the first and second output terminals of the signal processing unit are also connected to the metering unit, and the metering unit is connected to the control unit.

[0013] Optionally, the control device further includes: a first state detection unit, which is connected to a preset detection terminal of the main circuit, and the first state detection unit is also connected to the control unit.

[0014] Optionally, the control device further includes: a second state detection unit, which is connected to the action execution unit and the control unit.

[0015] Optionally, the control device further includes a display unit, and the control unit is connected to the display unit.

[0016] Optionally, the control device further includes: a first communication unit, which is connected to the control unit and is used for communication connection to a host computer.

[0017] Optionally, the control device further includes: a second communication unit, which is connected to the control unit and is used for communication connection to the master station equipment.

[0018] Secondly, embodiments of this application provide an energy metering device, which includes at least: the control device and the switching unit described in the first aspect above, wherein the switching unit is disposed on the main circuit, each sampling unit in the control device is connected to the power supply terminal of the main circuit, and the execution terminal of the action execution unit in the control device is connected to the control terminal of the switching unit to control the on / off state of the switching unit.

[0019] The beneficial effects of the control device and power metering equipment provided in this application are:

[0020] This application relates to a control device and an electricity metering equipment, belonging to the field of electricity meter technology. The control device, intended for installation in an electricity metering device, comprises a control unit, a current sampling unit, and an actuation unit. The current sampling unit is connected to the power supply terminal of the main circuit in the electricity metering device to collect the current signal from the power supply terminal. The current sampling unit is connected to the control unit, which is connected to the control terminal of the actuation unit. The actuation unit's execution terminal is also mechanically connected to the control terminal of a switching unit on the main circuit to mechanically control the on / off state of the switching units on the main circuit, ensuring the safe operation of the control device. Therefore, through the coordinated connection between the control unit, the current sampling unit, and the actuation unit, this application enables the control device to not only achieve precise control, overload protection, and short-circuit protection, but also fault detection and alarm, as well as remote monitoring and control. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of an electricity metering device provided in an embodiment of this application;

[0023] Figure 2 A schematic diagram of the structure of a control device provided in an embodiment of this application. Figure 1 ;

[0024] Figure 3 A schematic diagram of the structure of a control device provided in an embodiment of this application. Figure 2 ;

[0025] Figure 4 A schematic diagram of the structure of a control device provided in an embodiment of this application. Figure 3 ;

[0026] Figure 5 A schematic diagram of the structure of a control device provided in an embodiment of this application. Figure 4 ;

[0027] Figure 6 A schematic diagram of the structure of a control device provided in an embodiment of this application. Figure 5 ;

[0028] Figure 7 A schematic diagram of the structure of a control device provided in an embodiment of this application. Figure 6 ;

[0029] Figure 8 A schematic diagram of the structure of a control device provided in an embodiment of this application. Figure 7 ;

[0030] Figure 9 A schematic diagram of the structure of a control device provided in an embodiment of this application. Figure 8 ;

[0031] Figure 10 A schematic diagram of the structure of a control device provided in an embodiment of this application. Figure 9 . Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0033] In the description of this application, it should be noted that the terms "inner" and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0034] In the description of this application, it should also be noted that, unless otherwise explicitly specified and limited, the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. It should be noted that, unless otherwise specified, the features in the embodiments of this application can be combined with each other.

[0035] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0036] To better understand the various solutions provided in the embodiments of this application, the following detailed description of a control device and an energy metering device provided in the embodiments of this application will be provided in conjunction with the accompanying drawings.

[0037] Figure 1This is a schematic diagram of the structure of an electricity metering device provided in an embodiment of this application. Figure 1 As shown, the electricity metering device 200 may include at least: a control device 100 and a switching unit S1.

[0038] The switching unit S1 is located on the main circuit and is used to control the on / off state of the main circuit to protect the safety of the circuit where the power metering device 200 is located. Each sampling unit in the control device 100 is connected to the power supply terminal of the main circuit and is used to sample the power supply terminal of the main circuit to achieve accurate electrical signal sampling, improve the control accuracy and response speed of the power metering device 200, and enhance the reliability and safety of the power metering device 200. The execution terminal of the action execution unit in the control device 100 is connected to the control terminal of the switching unit S12 to control the on / off state of the switching unit S1, so as to protect the control device 100 from overload, short circuit and other fault conditions.

[0039] The control device 100 is used to realize the circuit breaker function of the external power metering equipment in the prior art, that is, to connect, carry and disconnect the current under normal circuit conditions, or to connect and carry the disconnecting current for a certain period of time under abnormal conditions such as short circuit.

[0040] The electricity metering device 200 can be selected according to the actual situation. For example, the electricity metering device 200 can be a smart meter.

[0041] The electricity metering device provided in this application can be composed of at least a control device and a switching unit. The switching unit is located on the main circuit and is used to control the on / off state of the main circuit. Each sampling unit in the control device is connected to the power supply terminal of the main circuit and is used to sample the power supply terminal of the main circuit. The execution terminal of the action execution unit in the control device is connected to the control terminal of the switching unit to control the on / off state of the switching unit. Therefore, this application can integrate the circuit breaker function, which is external to existing electricity metering devices, into the electricity metering device without modifying its size. This saves space, reduces the cost of the electricity metering device, is suitable for mass production, and improves the reliability and safety of the electricity metering device.

[0042] Furthermore, the control device provided in the embodiments of this application will be further described below with reference to the accompanying drawings. Figure 2 A schematic diagram of the structure of a control device provided in an embodiment of this application. Figure 1 .like Figure 2 As shown, the control device 100 is used to be installed in an electricity metering device. The control device 100 may include: a control unit 101, a current sampling unit 102, and an action execution unit 103.

[0043] The current sampling unit 102 is connected to the power supply terminal of the main circuit in the energy metering device 200, and is used to sample the power supply current of the main circuit. The current sampling unit 102 is connected to the control unit 101, and the control unit 101 is connected to the control terminal of the action execution unit 103, used to analyze the sampled current signal and control the action execution unit 103 based on the analyzed signal. The control unit 101 can also be used to determine whether the energy metering device is in a current fault state based on the current signal. This fault state can be selected according to the actual situation, such as short circuit or overload, to obtain the status information of the energy metering device. The execution terminal of the action execution unit 103 is also mechanically connected to the control terminal of the switching unit S1 on the main circuit to mechanically control the on / off state of the switching unit S1 on the main circuit. The status information may include the working state and fault state of the energy metering device.

[0044] The control unit 101 can be selected according to the actual situation. For example, the control unit 101 can be selected as an MCU (Microcontroller Unit). The action execution unit 103 can be selected according to the actual situation. For example, the action execution unit 103 can be selected as a composite tripping unit or a flux execution unit, etc.

[0045] It should be noted that the current sampling unit 102 can collect the current signal on the power supply terminal of the main circuit by setting a preset current transformer sensor at the power supply terminal of the main circuit. The preset current transformer sensor can be selected according to the actual situation. For example, the preset current transformer sensor can be selected according to the actual situation, and no restrictions are imposed here.

[0046] This application provides a control device for installation in an energy metering device. The control device comprises a control unit, a current sampling unit, and an actuation unit. The current sampling unit is connected to the power supply terminal of the main circuit in the energy metering device to collect the current signal from the power supply terminal. The current sampling unit is connected to the control unit, which is connected to the control terminal of the actuation unit. The actuation unit's execution terminal is also mechanically connected to the control terminal of a switching unit on the main circuit to mechanically control the on / off state of the switching unit based on the current signal, ensuring the safe operation of the control device. Therefore, through the coordinated connection between the control unit, current sampling unit, and actuation unit, this application enables the control device to not only achieve precise control, overload long-delay protection, short-circuit short-delay protection, and instantaneous protection, but also fault detection and alarm, as well as remote monitoring and control, thereby improving the reliability and safety of the energy metering device.

[0047] The control device provided in the embodiments of this application will be further described below with reference to the accompanying drawings. Figure 3A schematic diagram of the structure of a control device provided in an embodiment of this application. Figure 2 .like Figure 3 As shown, the control device 100 may further include a voltage sampling unit 104.

[0048] The voltage sampling unit 104 is connected to the power supply terminal of the main circuit and is used to collect the voltage signal at the power supply terminal of the main circuit. The voltage sampling unit 104 is also connected to the control unit 101 and is used to analyze the sampled voltage signal. The voltage sampling unit 104 can collect the voltage signal at the power supply terminal of the main circuit by setting a preset voltage transformer sensor at the power supply terminal of the main circuit. The preset voltage transformer sensor can be selected according to the actual situation. For example, the preset voltage transformer sensor can be selected according to the actual situation, and no restrictions are imposed here.

[0049] It should be noted that the control unit 101 analyzes the sampled current and voltage signals to obtain the output power consumption data of the power metering device, so that users can know their power consumption data.

[0050] The control device provided in this application may also be composed of a voltage sampling unit. The voltage sampling unit is connected to the power supply terminal of the main circuit and is used to collect the voltage signal on the power supply terminal of the main circuit. The voltage sampling unit is also connected to the control unit and is used to analyze the sampled voltage signal, thereby improving the monitoring and control, reliability and safety of the power metering equipment.

[0051] The control device provided in the embodiments of this application will be further described below with reference to the accompanying drawings. Figure 4 A schematic diagram of the structure of a control device provided in an embodiment of this application. Figure 3 .like Figure 4 As shown, the control device 100 may further include a signal processing unit 105.

[0052] The current sampling unit 102 and the voltage sampling unit 104 are respectively connected to the first input terminal and the second input terminal of the signal processing unit 105, and are used to amplify and convert the acquired current signal and voltage signal into digital signal; the first output terminal and the second output terminal of the signal processing unit 105 are connected to the control unit 101, and are used to directly analyze the converted current signal and voltage signal.

[0053] The control device provided in this application may also be composed of a signal processing unit; the current sampling unit and the voltage sampling unit are respectively connected to the first input terminal and the second input terminal of the signal processing unit, and the first output terminal and the second output terminal of the signal processing unit are connected to the control unit, which is used to analyze the amplified current signal and voltage signal, thereby improving the reliability and safety of the power metering equipment.

[0054] The control device provided in the embodiments of this application will be further described below with reference to the accompanying drawings. Figure 5 A schematic diagram of the structure of a control device provided in an embodiment of this application. Figure 4 .like Figure 5 As shown, the control device 100 may further include a metering unit 106.

[0055] The first and second output terminals of the signal processing unit 105 are also connected to the metering unit 106 to perform statistical analysis on the amplified current and voltage signals. The metering unit 106 is connected to the control unit 101 to analyze the statistical data of the metering unit 106.

[0056] The control device provided in this application may also be composed of a metering unit. The first and second output terminals of the signal processing unit are also connected to the metering unit. The metering unit is connected to the control unit and is used to analyze the current and voltage signals statistically obtained by the metering unit to improve the monitoring and control, reliability and safety of the power metering equipment.

[0057] The control device provided in the embodiments of this application will be further described below with reference to the accompanying drawings. Figure 6 A schematic diagram of the structure of a control device provided in an embodiment of this application. Figure 5 .like Figure 6 As shown, the control device 100 may further include a first state detection unit 107.

[0058] The first state detection unit 107 is connected to a preset detection terminal of the main circuit to detect the state of the main circuit. The first state detection unit 107 is also connected to the control unit 101 to analyze the detected state of the main circuit and obtain the result of the main circuit's fault or operating state. The preset detection terminal of the main circuit can be selected according to actual conditions; no restrictions are imposed here. Figure 6 This is just an example.

[0059] The control device provided in this application may also consist of a first state detection unit. The first state detection unit is connected to a preset detection terminal of the main circuit and is also connected to a control unit to analyze the detection status of the main circuit and obtain the results of the fault or working status of the main circuit, thereby improving the monitoring and control, reliability and safety of the power metering equipment.

[0060] The control device provided in the embodiments of this application will be further described below with reference to the accompanying drawings. Figure 7 A schematic diagram of the structure of a control device provided in an embodiment of this application. Figure 6 .like Figure 7 As shown, the control device 100 may further include a second state detection unit 108.

[0061] The second state detection unit 108 is connected to the action execution unit 103 and is used to detect the execution action of the action execution unit 103. The second state detection unit 108 is connected to the control unit 101 and is used to analyze the execution action detection status of the main action execution unit 103 to obtain the result of the fault or working status of the execution action of the action execution unit 103, and then infer the health status of the power metering equipment provided in this application.

[0062] The control device provided in this application may also consist of a second state detection unit, which is connected to the action execution unit and the control unit. The second state detection unit is used to analyze the execution action detection status of the main action execution unit to obtain the result of the fault or working status of the execution action of the action execution unit, thereby improving the monitoring and control, reliability and safety of the power metering equipment.

[0063] The control device provided in the embodiments of this application will be further described below with reference to the accompanying drawings. Figure 8 A schematic diagram of the structure of a control device provided in an embodiment of this application. Figure 7 .like Figure 8 As shown, the control device 100 may further include a display unit 109.

[0064] The control unit 101 is connected to the display unit 109, which is used to display the analysis and processing results of the control unit 101. The display unit 109 can be selected according to the actual situation; for example, the display unit 109 can be selected as an LCD (Liquid Crystal Display).

[0065] The control device provided in this application may also consist of a display unit. The control unit is connected to the display unit to display the analysis and processing results of the control unit, thereby improving the reliability and safety of the power metering equipment and the user experience.

[0066] The control device provided in the embodiments of this application will be further described below with reference to the accompanying drawings. Figure 9 A schematic diagram of the structure of a control device provided in an embodiment of this application. Figure 8 .like Figure 9 As shown, the control device 100 may further include: a first communication unit 110.

[0067] The first communication unit 110 is connected to the control unit 110. The first communication unit 110 is used to communicate with the host computer to transmit interactive data and status data in the control unit 110 to the host computer. The host computer is used to maintain the power metering equipment based on these data.

[0068] The first communication unit 110 can be selected according to the actual situation. For example, the first communication unit 110 can be selected as an RS485 communication unit.

[0069] The control device provided in this application may also be composed of a first communication unit. The first communication unit is connected to the control unit and is used to communicate with the host computer to transmit interactive data and status data in the control unit 110 to the host computer. The host computer is used to maintain the power metering equipment based on these data to improve the reliability and safety of the power metering equipment.

[0070] The control device provided in the embodiments of this application will be further described below with reference to the accompanying drawings. Figure 10 A schematic diagram of the structure of a control device provided in an embodiment of this application. Figure 9 .like Figure 10 As shown, the control device 100 may further include a second communication unit 111.

[0071] The second communication unit 111 is connected to the control unit 110. The second communication unit 111 is used to communicate with the master station equipment to transmit power data in the control unit 110 to the master station equipment. The master station equipment is used to control the power consumption of the power metering equipment based on this data.

[0072] The second communication unit 111 can be selected according to the actual situation. For example, the second communication unit 111 can be selected as an HPLC (Power Line Carrier Communication) communication unit.

[0073] The control device provided in this application may also consist of a second communication unit. The second communication unit is connected to the control unit and is used to communicate with the master station equipment to transmit power data such as that in the control unit to the master station equipment. The master station equipment is used to control the power consumption of the power metering equipment based on this data, thereby improving the reliability and security of the power metering equipment.

[0074] Furthermore, to facilitate understanding of the aforementioned control device and electricity metering equipment, this application embodiment also provides an example of a method for detecting the health status of electricity metering equipment. This method for detecting the health status of electricity metering equipment is executed by the control unit 101 and may include:

[0075] The first step involves the control unit comparing the detected current signal with a preset instantaneous short-circuit operating current signal. If the detected current signal is greater than the preset instantaneous short-circuit operating current signal, the control unit controls the actuation unit to perform a tripping action. Then, the second status detection unit detects the status information of the actuation unit performing the tripping action and returns it to the control unit, displaying the result through the connected display unit. The preset instantaneous short-circuit operating current signal can be set according to actual conditions; no restrictions are imposed here.

[0076] The second step involves comparing the detected current signal with the preset short-circuit instantaneous trip current signal a preset number of times. If the detected current signal remains less than or equal to the preset short-circuit instantaneous trip current signal after a preset number of comparisons, and the detected current signal generates electrical energy information E (which measures the work done by the detected current signal), then the electrical energy information E corresponding to the detected current signal is statistically analyzed. Based on this electrical energy information E, the user's electricity balance corresponding to the electricity metering device is checked to see if it is greater than 0. If the user's electricity balance is greater than 0, the status information of the electricity metering device is checked. If the user's electricity balance is less than or equal to 0, the control unit controls the action execution unit to perform a tripping action. Then, the second status detection unit detects the status information of the action execution unit performing the tripping action and returns it to the control unit, displaying the result through the connected display unit.

[0077] The preset number of times can be selected according to the actual situation. For example, the preset number of times can be selected as 3 times.

[0078] It should be noted that in the step of consecutive preset number of times (e.g., 3 times), it is necessary to determine whether the duration when the detected current signal is less than or equal to the preset short-circuit instantaneous action current signal is greater than the preset action time. If the duration is greater than the preset action time, the continuous number of times judgment process is exited, and the control unit directly controls the action execution unit to perform the tripping action. Then, the second state detection unit detects the state information of the action execution unit performing the tripping action and returns it to the control unit, and displays the result through the display unit connected to it.

[0079] This application provides a method for detecting the health status of an electricity metering device. By comparing a detected current signal with a preset short-circuit instantaneous action current signal, if the detected current signal is greater than the preset short-circuit instantaneous action current signal, the control unit controls the action execution unit to perform a tripping action. Then, a second state detection unit detects the status information of the action execution unit performing the tripping action and returns it to the control unit, displaying the result through a connected display unit. If the detected current signal is less than or equal to the preset short-circuit instantaneous action current signal, the two signals are compared consecutively a preset number of times. If, after a preset number of comparisons, the detected current signal is less than or equal to the preset short-circuit instantaneous action current signal, and since the detected current signal generates electrical energy information (a measure of the work done by the detected current signal), the electrical energy information corresponding to the detected current signal is statistically analyzed, and the user's electricity balance corresponding to the electricity metering device is checked based on this electrical energy information to determine if it is greater than 0. If the user's electricity balance is greater than 0, the status information of the electricity metering device is detected; if the user's electricity balance is less than or equal to 0, the control unit controls the action execution unit to perform a tripping action. Then, the second status detection unit detects the status information of the action execution unit performing the tripping action and returns it to the control unit, and displays the result through the connected display unit. Therefore, this application can manage the health status of electricity metering devices, improving the monitoring and control, reliability, and security of electricity metering devices.

[0080] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A control device characterized by comprising: The control device is arranged in an electric energy metering device, and comprises a control unit, a current sampling unit, and an action execution unit. The current sampling unit is connected to a power supply end of a main circuit in the electric energy metering device, and is connected to the control unit.

2. The control device according to claim 1, characterized by The control device further comprises a voltage sampling unit. The voltage sampling unit is connected to the power supply end of the main circuit, and is further connected to the control unit.

3. The control device of claim 2, wherein The control device further comprises a signal processing unit, and the current sampling unit and the voltage sampling unit are respectively connected to first and second input ends of the signal processing unit.

4. The control device according to claim 3, characterized in that The control device further comprises a metering unit, and the first and second output ends of the signal processing unit are further connected to the metering unit.

5. The control device of claim 1, wherein The control device further comprises a first state detection unit, which is connected to a preset detection end of the main circuit and is further connected to the control unit.

6. The control device of claim 1, wherein The control device further comprises a second state detection unit, which is connected to the action execution unit and is further connected to the control unit.

7. The control device of claim 1, wherein The control device further comprises a display unit, and the control unit is connected to the display unit.

8. The control device of claim 1, wherein The control device further comprises a first communication unit, which is connected to the control unit and is used for communication connection with a host computer.

9. The control device of claim 1, wherein The control device further comprises a second communication unit, which is connected to the control unit and is used for communication connection with a main station device.

10. An electrical energy metering device, characterized by The control device and a switch unit are included, and the switch unit is arranged on a main circuit. The control unit is connected to a power supply end of the main circuit, and an execution end of the action execution unit is connected to a control end of the switch unit to control an on-off state of the switch unit.

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