Intelligent electric meter circuit breaker control method, device, equipment and medium

Abstract

The invention belongs to the technical field of power system automation, and particularly relates to an intelligent electric meter circuit breaker control method, device and equipment and a medium. According to the method, intelligent control over the circuit breaker is achieved through the on-off time of the signal line between the electric energy meter and the circuit breaker. The method comprises the following three main steps: firstly, acquiring the on-off time of a signal line through a sampling circuit arranged at a relay; secondly, corresponding data signals are determined according to the on-off time, and the data signals can represent instructions such as switching-on, switching-off or parameter modification; and finally, enabling the data signal to correspond to a preset rule, so as to determine a specific circuit breaker control instruction. And the communication capability between the electric energy meter and the circuit breaker is greatly expanded. On the basis of the same physical connection, that is, on the basis of not changing the structure and the electric connection relation of the electric energy transformer and the circuit breaker, more information can be transmitted, and the requirement of function increase of the external circuit breaker is met.

Description

Technical Field

[0001] The present invention belongs to the technical field of power system automation, and in particular relates to a smart meter circuit breaker control method, device, equipment and medium. Background Art

[0002] The external circuit breaker of the energy meter is used in conjunction with the energy meter, and can be controlled by the energy meter to realize opening and closing. The traditional external circuit breaker of the energy meter is mainly controlled by AC220V level signal, and its operation logic is relatively simple: when the signal line is applied with 220V voltage, the circuit breaker performs the closing operation; and when the signal line voltage drops to 0V, the circuit breaker performs the opening operation. This control method has been widely used in early power systems because it can meet basic power distribution and protection needs. However, with the continuous improvement of the intelligence and automation of the power system, the functions of the external circuit breaker have become more, and the traditional level signal control method has gradually exposed its limitations.

[0003] Since the signal line can only transmit two states (high level or low level), it cannot carry more control information or parameter settings. This limits the functional expansion of external circuit breakers and makes it difficult to meet the growing power management needs. Summary of the invention

[0004] The object of the present invention is to provide a smart meter circuit breaker control method, device, equipment and medium to solve the problem of signal line communication mode in the prior art.

[0005] In order to achieve the above object, the present invention adopts the following technical solution: In a first aspect, the present invention provides a smart meter circuit breaker control method, comprising: Obtain the on-off time of the signal line between the energy meter and the circuit breaker; Determine a corresponding data signal according to the on-off time of the signal line; wherein the data signal includes at least one data; The data signal is matched with a preset rule to determine a circuit breaker control instruction.

[0006] As an optional solution of the present invention, obtaining the on-off time of the signal line between the electric energy meter and the circuit breaker specifically includes: The on / off state signal of the relay is collected according to a sampling circuit arranged at the relay; wherein the electric energy meter controls the on / off of the signal line through the relay; The on-off time of the signal line is determined according to the on-off state signal of the relay.

[0007] As an optional solution of the present invention, in the step of the electric energy meter controlling the on and off of the signal line through the relay, the relay is in a normally closed state.

[0008] As an optional solution of the present invention, in the step of matching the data signal with a preset rule, the preset rule specifically includes: Circuit breaker opening and closing rules: when the signal line is connected for more than a first time length, the data signal closing signal is determined; when the signal line is disconnected for more than a first time length, the data signal breaking signal is determined; Parameter modification rules: the signal line is disconnected for more than a first time length as a premise; based on the premise, the second time length of the signal line being turned on for different time lengths indicates sending corresponding data to the circuit breaker; wherein, after each data is sent, the signal line is disconnected for a third time length, and the second time length and the third time length are both shorter than the first time length; the data corresponding to the second time length are combined, and different combination data obtained correspond to different parameter modification instructions respectively.

[0009] As an optional solution of the present invention, matching the data signal with a preset rule to determine a circuit breaker control instruction includes: Matching the data signal with a preset rule; When the signal line is connected for more than a first time period, determining that the control instruction is a closing signal of a circuit breaker; When the signal line is disconnected for more than a first time period, determining that the control instruction is a trip signal of a circuit breaker; If the signal line is disconnected for more than the first time length, the signal line is then turned on for the second time length and disconnected for the third time length, and each time of turning on and off is regarded as a cycle; then the second time length of multiple cycles is determined, and the data corresponding to the second time length of multiple cycles are combined to obtain the parameter modification instruction.

[0010] As an optional solution of the present invention, the first time length is 1 second.

[0011] As an optional solution of the present invention, the second duration includes a plurality of different time lengths, and each time length corresponds to transmitted data.

[0012] In a second aspect of the present invention, there is provided a smart meter circuit breaker control device, comprising: A data acquisition module, used to obtain the on-off time of the signal line between the electric energy meter and the circuit breaker; A signal determination module, used to determine a corresponding data signal according to the on-off time of the signal line; wherein the data signal includes at least one data; The instruction generation module is used to match the data signal with a preset rule to determine the circuit breaker control instruction.

[0013] According to a third aspect of the present invention, an electronic device is provided, comprising a processor and a memory, wherein the processor is configured to execute a computer program stored in the memory to implement the above-mentioned smart meter circuit breaker control method.

[0014] According to a fourth aspect of the present invention, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores at least one instruction, and when the at least one instruction is executed by a processor, the smart meter circuit breaker control method as described above is implemented.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: The intelligent meter circuit breaker control method of the present invention uses the on-off time of the signal line to encode the data signal, rather than being limited to the AC220V level signal. The present invention greatly expands the communication capability between the electric energy meter and the circuit breaker. On the basis of the same physical connection, that is, without changing the structure and electrical connection relationship between the electric energy transformer and the circuit breaker, more information can be transmitted, meeting the demand for more functions of the external circuit breaker.

[0016] The intelligent electric meter circuit breaker control method of the present invention allows different control instructions and parameter modification instructions to be defined according to the on-off duration of the signal line through preset rules, and can easily adjust the control logic as needed without changing the hardware connection.

[0017] The intelligent meter circuit breaker control method of the present invention adopts a time-based signal encoding method, reduces the dependence on complex electronic communication hardware, and reduces system costs. At the same time, the method improves the reliability and stability of the system because simple physical connections are less prone to failure than complex electronic communications.

[0018] The intelligent meter circuit breaker control method of the present invention is relatively simple and intuitive, and can be easily implemented in existing electric energy meters and circuit breaker systems. In addition, since the dependence on specific hardware is reduced, the maintenance and upgrade of the system also become easier and more cost-effective.

[0019] The intelligent electric meter circuit breaker control method of the present invention can be easily applied to electric energy meters and circuit breakers of different brands and models by defining a set of standardized preset rules, thereby enhancing the compatibility and interoperability of the system.

[0020] In summary, the intelligent meter circuit breaker control method of the present invention effectively solves the limitations of the signal line communication method in the prior art through the proposed signal encoding method, and provides a new solution for the intelligent control of electric energy meters and circuit breakers. The intelligent meter circuit breaker control device, electronic device and computer-readable storage medium provided by the present invention also solve the problems raised in the background technology section. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings: Figure 1 This is a flow chart of a smart meter circuit breaker control method according to an embodiment of the present invention; Figure 2 This is a waveform diagram of 0xa1 in an embodiment of the present invention; Figure 3 This is a waveform diagram of the bit value of 1 in an embodiment of the present invention (200ms); Figure 4 This is a waveform diagram (100ms) when the bit value is 0 in an embodiment of the present invention; Figure 5 This is a structural block diagram of a smart meter circuit breaker control device according to an embodiment of the present invention; Figure 6 The present invention is a structural block diagram of an electronic device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0022] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0023] The following detailed description is an exemplary description, which is intended to provide further detailed description of the present invention. Unless otherwise specified, all technical terms used in the present invention have the same meaning as those generally understood by those skilled in the art to which the present application belongs. The terms used in the present invention are only for describing specific embodiments, and are not intended to limit exemplary embodiments according to the present invention.

[0024] Example 1 The present invention provides a smart meter circuit breaker control method, which is compatible with AC220V level control, uses existing signal lines for communication, and achieves the purpose of modifying circuit breaker setting parameters under the premise of being compatible with opening and closing control.

[0025] like Figure 1 As shown, a smart meter circuit breaker control method includes: S1. Obtain the on-off time of the signal line between the electric energy meter and the circuit breaker.

[0026] In one embodiment, the key to this step is to accurately capture the on-off state change of the signal line and determine the on-off time accordingly. This is usually achieved by a sampling circuit set at the relay. The electric energy meter controls the on-off of the signal line through the relay, and the sampling circuit is responsible for collecting the on-off state signal of the relay.

[0027] In one embodiment, obtaining the on-off time of a signal line between an electric energy meter and a circuit breaker specifically includes: collecting an on-off state signal of a relay according to a sampling circuit arranged at the relay; wherein the electric energy meter controls the on-off of the signal line through the relay; and determining the on-off time of the signal line according to the on-off state signal of the relay.

[0028] It should be noted that in the prior art, the main control chip of the electric energy meter can collect the user's electricity bill and control the relay in the electric energy meter according to the electricity bill. When the main control chip decides to operate the circuit breaker, it will control the primary circuit of the relay to lose power or gain power, thereby controlling the on and off of the secondary circuit. The first end of the secondary circuit is connected to the incoming line 1 pin (220V live wire) of the electric meter, and the second end is connected to the signal port of the circuit breaker. When the secondary circuit is turned on, the 220V voltage signal is transmitted to the circuit breaker. In this embodiment, when the user's electric energy meter is in a normal state (such as a pre-deposited balance of electricity bills), the relay is set to a normally closed state, that is, when there is no external control signal, the relay remains in a closed state, the signal line is in a conducting state, and power is supplied to the user normally.

[0029] Specifically, when the primary circuit is supplied with 12V voltage, the secondary circuit is turned on; when the primary circuit is not supplied with 12V voltage, the secondary circuit is disconnected.

[0030] In one embodiment, the relay is in a normally closed state.

[0031] S2. Determine a corresponding data signal according to the on-off time of the signal line; wherein the data signal includes at least one data.

[0032] After obtaining the on and off times of the signal line, the next step is to determine the corresponding data signal based on this time information, which involves converting the time information into binary or hexadecimal data.

[0033] For example, when the control relay is turned on for more than 1s (AC220V voltage signal exceeds 1s), the data signal is a closing signal; when the control relay is turned off for more than 1s (0V voltage signal exceeds 1s), the data signal is an opening signal.

[0034] The above-mentioned 1s delay determination method can not only meet the control requirements of the existing standards for external circuit breakers, but also provide conditions for the subsequent implementation of the encoding method used for setting parameters.

[0035] For another example, when the circuit breaker parameters need to be set, the relay is turned on for 200ms (the duration of the AC220V voltage signal is 200ms), indicating that data 1 is sent (the bit value is 1). The circuit breaker determines through the sampling circuit that the AC220V voltage signal lasting 200ms is received, and records the received data 1 (bit value is 1); the control relay is turned on for 100ms (the duration of the AC220V voltage signal is 100ms), indicating that data 0 is sent (the bit value is 0). The circuit breaker determines through the sampling circuit that the AC220V voltage signal lasting 100ms is received, and records the received data 0 (bit value is 0).

[0036] When 8 data (8 bits) are sent, the circuit breaker combines the received 8 data (8 bits) into one data signal: a hexadecimal number (0xa1).

[0037] S3. Match the data signal with a preset rule to determine a circuit breaker control instruction.

[0038] The final step is to match the data signal with the preset rules to determine the specific circuit breaker control instructions.

[0039] In one embodiment, the preset rules specifically include: Circuit breaker opening and closing rules: when the signal line is connected for more than a first time length, the data signal closing signal is determined; when the signal line is disconnected for more than a first time length, the data signal breaking signal is determined; Parameter modification rules: the signal line is disconnected for more than a first time length as a premise; based on the premise, the second time length of the signal line being turned on for different time lengths indicates sending corresponding data to the circuit breaker; wherein, after each data is sent, the signal line is disconnected for a third time length, and the second time length and the third time length are both shorter than the first time length; the data corresponding to the second time length are combined, and different combination data obtained correspond to different parameter modification instructions respectively.

[0040] In one embodiment, matching the data signal with a preset rule to determine a circuit breaker control instruction includes: Matching the data signal with a preset rule; When the signal line is connected for more than a first time period, determining that the control instruction is a closing signal of a circuit breaker; When the signal line is disconnected for more than a first time period, determining that the control instruction is a trip signal of a circuit breaker; If the signal line is disconnected for more than the first time length, the signal line is then turned on for the second time length and disconnected for the third time length, and each time of turning on and off is regarded as a cycle; then the second time length of multiple cycles is determined, and the data corresponding to the second time length of multiple cycles are combined to obtain the parameter modification instruction.

[0041] As an example, the first duration is 1 second. The third duration is the disconnection time length between two adjacent data.

[0042] In one embodiment, the second duration includes a plurality of different time lengths, and each time length corresponds to data to be sent.

[0043] As an example, Figure 3 and Figure 4 The second duration may be 200ms, 100ms, etc. 200ms means sending data "1", 100ms means sending data "0"; Figure 2 The data sent is shown as "1", "0", "0", "0", "0", "1", "0", "1", and the combined data signal is the binary number "10000101". The binary number is converted into hexadecimal number 0xa1.

[0044] As an example, the hexadecimal number (0xa1) can correspond to different parameter modifications according to a pre-agreed agreement. In this solution, the hexadecimal number (0xa1) is agreed to modify the circuit breaker working mode.

[0045] In some other examples, data signals may also be used to represent set currents, for example, 0xa2, 0xa3, 0xa4, 0xa5, and 0xa6 correspond to set currents of 32A, 40A, 50A, 63A, and 80A, respectively.

[0046] In summary, the intelligent meter circuit breaker control method of the present invention transmits control information and parameter settings by controlling the on-off time of the signal line, thereby realizing intelligent control of the electric energy meter and the circuit breaker.

[0047] Example 2 like Figure 5 As shown, based on the same inventive concept as the above embodiment, the present invention also provides a smart meter circuit breaker control device, comprising: A data acquisition module, used to obtain the on-off time of the signal line between the electric energy meter and the circuit breaker; A signal determination module, used to determine a corresponding data signal according to the on-off time of the signal line; wherein the data signal includes at least one data; The instruction generation module is used to match the data signal with a preset rule to determine the circuit breaker control instruction.

[0048] Example 3 like Figure 6 As shown, the present invention also provides an electronic device 100 for implementing a smart meter circuit breaker control method; The electronic device 100 includes a memory 101 , at least one processor 102 , a computer program 103 stored in the memory 101 and executable on the at least one processor 102 , and at least one communication bus 104 .

[0049] The memory 101 may be used to store a computer program 103 . The processor 102 implements the steps of a smart meter circuit breaker control method of Example 1 by running or executing the computer program stored in the memory 101 and calling the data stored in the memory 101 .

[0050] The memory 101 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application required for at least one function (such as a sound playback function, an image playback function, etc.), etc.; the data storage area may store data (such as audio data) created according to the use of the electronic device 100, etc. In addition, the memory 101 may include a non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) card, a flash card (Flash Card), at least one disk storage device, a flash memory device, or other non-volatile solid-state storage devices.

[0051] At least one processor 102 may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The processor 102 may be a microprocessor or any conventional processor, etc. The processor 102 is the control center of the electronic device 100, and uses various interfaces and lines to connect various parts of the entire electronic device 100.

[0052] The memory 101 in the electronic device 100 stores a plurality of instructions to implement a smart meter circuit breaker control method, and the processor 102 can execute the plurality of instructions to implement: Obtain the on-off time of the signal line between the energy meter and the circuit breaker; Determine a corresponding data signal according to the on-off time of the signal line; wherein the data signal includes at least one data; The data signal is matched with a preset rule to determine a circuit breaker control instruction.

[0053] Example 4 If the module / unit integrated in the electronic device 100 is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present invention implements all or part of the processes in the above-mentioned embodiment method, and can also be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium, and the computer program can implement the steps of the above-mentioned method embodiments when executed by the processor. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. Computer-readable media may include: any entity or device capable of carrying computer program code, recording medium, U disk, mobile hard disk, disk, optical disk, computer memory and read-only memory (ROM, Read-Only Memory).

[0054] It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Furthermore, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0055] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0056] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0057] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0058] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A smart meter circuit breaker control method, characterized in that: include: Obtain the on-off time of the signal line between the energy meter and the circuit breaker; Determine a corresponding data signal according to the on-off time of the signal line; wherein the data signal includes at least one data; The data signal is matched with a preset rule to determine a circuit breaker control instruction.

2. The smart meter circuit breaker control method according to claim 1, characterized in that: Obtain the on-off time of the signal line between the energy meter and the circuit breaker, including: The on / off state signal of the relay is collected according to a sampling circuit arranged at the relay; wherein the electric energy meter controls the on / off of the signal line through the relay; The on-off time of the signal line is determined according to the on-off state signal of the relay.

3. The smart meter circuit breaker control method according to claim 2, characterized in that: In the step of the electric energy meter controlling the on and off of the signal line through the relay, the relay is in a normally closed state.

4. The smart meter circuit breaker control method according to claim 1, characterized in that: In the step of matching the data signal with a preset rule, the preset rule specifically includes: Circuit breaker opening and closing rules: when the signal line is connected for more than a first time length, the data signal closing signal is determined; when the signal line is disconnected for more than a first time length, the data signal breaking signal is determined; Parameter modification rules: the signal line is disconnected for more than a first time length as a premise; based on the premise, the second time length of the signal line being turned on for different time lengths indicates sending corresponding data to the circuit breaker; wherein, after each data is sent, the signal line is disconnected for a third time length, and the second time length and the third time length are both shorter than the first time length; the data corresponding to the second time length are combined, and different combination data obtained correspond to different parameter modification instructions respectively.

5. The smart meter circuit breaker control method according to claim 4, characterized in that: Matching the data signal with a preset rule to determine a circuit breaker control instruction includes: Matching the data signal with a preset rule; When the signal line is connected for more than a first time period, determining that the control instruction is a closing signal of a circuit breaker; When the signal line is disconnected for more than a first time period, determining that the control instruction is a trip signal of a circuit breaker; If the signal line is disconnected for more than the first time length, the signal line is then turned on for the second time length and disconnected for the third time length, and each time of turning on and off is regarded as a cycle; then the second time length of multiple cycles is determined, and the data corresponding to the second time length of multiple cycles are combined to obtain the parameter modification instruction.

6. The smart meter circuit breaker control method according to claim 5, characterized in that: The first duration is 1 second.

7. The smart meter circuit breaker control method according to claim 5, characterized in that: The second time length includes a plurality of different time lengths, and each time length corresponds to transmitted data.

8. A smart meter circuit breaker control device, characterized in that: include: A data acquisition module, used to obtain the on-off time of the signal line between the electric energy meter and the circuit breaker; A signal determination module, used to determine a corresponding data signal according to the on-off time of the signal line; wherein the data signal includes at least one data; The instruction generation module is used to match the data signal with a preset rule to determine the circuit breaker control instruction.

9. An electronic device, characterized in that: The method comprises a processor and a memory, wherein the processor is used to execute a computer program stored in the memory to implement the smart meter circuit breaker control method according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores at least one instruction, and when the at least one instruction is executed by a processor, the smart meter circuit breaker control method according to any one of claims 1 to 7 is implemented.

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