Metering secondary circuit fault detection method and related device

Abstract

The embodiment of the invention relates to the field of data processing and fault detection, and provides a metering secondary circuit fault detection method and a related device, and the method comprises the steps: obtaining the operation parameter information of a secondary circuit through extension equipment; determining operation fault information of the electric energy meter side according to the operation parameter information; if the operation fault information indicates that the electric energy meter side has an operation fault, fault early warning is carried out according to the operation fault information, fault early warning can be carried out based on the operation parameter information of the electric energy meter side collected by the extension equipment of the metering secondary circuit fault detection system, and the efficiency of fault early warning is improved.

Description

Technical Field

[0001] The present application relates to the technical field of data processing and fault detection, and in particular to a metering secondary circuit fault detection method and related devices. Background Art

[0002] At present, metering secondary circuit failure is the main cause of metering inaccuracy. Metering secondary circuit failure cannot be seen directly. Once a metering failure occurs, it will not only affect the normal operation of the power system, but also cause huge economic losses to the power company. Although the existing detection methods can detect secondary circuit failures to a certain extent, there are still certain limitations, such as long detection time, which makes it impossible to quickly identify metering secondary circuit failures. Summary of the invention

[0003] The embodiment of the present application provides a metering secondary circuit fault detection method and related devices, which can perform fault warning based on the operating parameter information on the electric energy meter side collected by the extension equipment of the metering secondary circuit fault detection system, thereby improving the efficiency of fault warning.

[0004] A first aspect of an embodiment of the present application provides a metering secondary circuit fault detection method, characterized in that the method is applied to a host device of a metering secondary circuit fault detection system, the metering secondary circuit fault detection system includes a host device and an extension device, and the method includes:

[0005] Obtain the operating parameter information of the secondary circuit through the extension equipment;

[0006] Determine the operation fault information on the electric energy meter side according to the operation parameter information;

[0007] If the operation fault information indicates that there is an operation fault on the electric energy meter side, a fault warning is performed according to the operation fault information.

[0008] In this example, the operating parameter information of the secondary circuit is obtained through the extension device, and the operating fault information on the electric energy meter side is determined based on the operating parameter information. If the operating fault information indicates that there is an operating fault on the electric energy meter side, a fault warning is performed based on the operating fault information. Therefore, a fault warning can be performed based on the operating parameter information on the electric energy meter side collected by the extension device of the metering secondary circuit fault detection system, thereby improving the efficiency of fault warning.

[0009] In a possible implementation, determining the operation fault information on the electric energy meter side according to the operation parameter information includes:

[0010] Extracting a first voltage of a mutual inductor on the electric energy meter side and a second voltage of the electric energy meter from the operation parameter information;

[0011] Calculating voltage drop error information according to the first voltage and the second voltage;

[0012] Extracting attribute information of the secondary load of the transformer from the operating parameter information;

[0013] Determine the load value of the transformer at rated secondary output according to the attribute information;

[0014] Fault operation information is determined according to the voltage drop error information and the load value.

[0015] In a possible implementation, determining the load value of the transformer at rated secondary output according to the attribute information includes:

[0016] extracting the in-phase component, quadrature component and power factor of the secondary load from the attribute information of the secondary load;

[0017] Calculating the admittance value and impedance value of the mutual inductor according to the in-phase component, the quadrature component and the power factor;

[0018] The load value of the transformer at rated secondary output is determined according to the admittance value and the impedance value.

[0019] In a possible implementation, determining the operation fault information on the electric energy meter side according to the operation parameter information includes:

[0020] Extracting terminal current information and terminal voltage information on the electric energy meter side from the operating parameter information;

[0021] The operation fault information on the electric energy meter side is determined according to the terminal current information and the terminal voltage information.

[0022] In a possible implementation, the method further includes:

[0023] If the operation fault information indicates that there is an operation fault on the electric energy meter side, extracting fault parameters according to the operation fault information;

[0024] determining a fault factor according to the fault parameter;

[0025] determining a fault event according to the fault factor;

[0026] The fault event is sent to a server.

[0027] A second aspect of an embodiment of the present application provides a metering secondary circuit fault detection device, which is applied to a host device of a metering secondary circuit fault detection system. The metering secondary circuit fault detection system includes a host device and an extension device. The device includes:

[0028] An acquisition unit, used to acquire operating parameter information of the secondary circuit through an extension device;

[0029] A determination unit, configured to determine operation fault information on the electric energy meter side according to the operation parameter information;

[0030] The sending unit is used to issue a fault warning according to the operation fault information if the operation fault information indicates that there is an operation fault on the electric energy meter side.

[0031] In this example, the operating parameter information of the secondary circuit is obtained through the extension device, and the operating fault information on the electric energy meter side is determined based on the operating parameter information. If the operating fault information indicates that there is an operating fault on the electric energy meter side, a fault warning is performed based on the operating fault information. Therefore, a fault warning can be performed based on the operating parameter information on the electric energy meter side collected by the extension device of the metering secondary circuit fault detection system, thereby improving the efficiency of fault warning.

[0032] In a possible implementation manner, the determining unit is specifically configured to:

[0033] Extracting a first voltage of a mutual inductor on the electric energy meter side and a second voltage of the electric energy meter from the operation parameter information;

[0034] Calculating voltage drop error information according to the first voltage and the second voltage;

[0035] Extracting attribute information of the secondary load of the transformer from the operating parameter information;

[0036] Determine the load value of the transformer at rated secondary output according to the attribute information;

[0037] Fault operation information is determined according to the voltage drop error information and the load value.

[0038] In a possible implementation, in determining the load value of the rated secondary output of the transformer according to the attribute information, the determining unit is specifically configured to:

[0039] extracting the in-phase component, quadrature component and power factor of the secondary load from the attribute information of the secondary load;

[0040] Calculating the admittance value and impedance value of the mutual inductor according to the in-phase component, the quadrature component and the power factor;

[0041] The load value of the transformer at rated secondary output is determined according to the admittance value and the impedance value.

[0042] In a possible implementation manner, the determining unit is specifically configured to:

[0043] Extracting terminal current information and terminal voltage information on the electric energy meter side from the operating parameter information;

[0044] The operation fault information on the electric energy meter side is determined according to the terminal current information and the terminal voltage information.

[0045] In a possible implementation, the device is further used for:

[0046] If the operation fault information indicates that there is an operation fault on the electric energy meter side, extracting fault parameters according to the operation fault information;

[0047] determining a fault factor according to the fault parameter;

[0048] determining a fault event according to the fault factor;

[0049] The fault event is sent to a server.

[0050] A third aspect of an embodiment of the present application provides a terminal, comprising a processor, an input device, an output device and a memory, wherein the processor, input device, output device and memory are interconnected, wherein the memory is used to store a computer program, the computer program comprises program instructions, and the processor is configured to call the program instructions to execute the step instructions in the first aspect of the embodiment of the present application.

[0051] The fourth aspect of the embodiments of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program for electronic data exchange, wherein the computer program enables a computer to execute part or all of the steps described in the first aspect of the embodiments of the present application.

[0052] A fifth aspect of the embodiments of the present application provides a computer program product, wherein the computer program product includes a non-transitory computer-readable storage medium storing a computer program, and the computer program is operable to cause a computer to execute some or all of the steps described in the first aspect of the embodiments of the present application. The computer program product may be a software installation package. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0054] Figure 1 A schematic diagram of a metering secondary circuit fault detection system is provided for an embodiment of the present application;

[0055] Figure 2A flow chart of a method for detecting a fault in a metering secondary circuit is provided for an embodiment of the present application;

[0056] Figure 3 A schematic diagram of the structure of a terminal provided in an embodiment of the present application;

[0057] Figure 4 A structural schematic diagram of a metering secondary circuit fault detection device is provided for an embodiment of the present application. DETAILED DESCRIPTION

[0058] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0059] The terms "first", "second", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes steps or units that are not listed, or optionally includes other steps or units inherent to these processes, methods, products or devices.

[0060] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

[0061] In order to better understand a metering secondary circuit fault detection method provided in an embodiment of the present application, the existing metering secondary circuit fault detection method is first briefly introduced below. The metering secondary circuit fault is the main fault that causes metering inaccuracy. The metering secondary circuit fault cannot be seen intuitively. Once a metering fault occurs, it will not only affect the normal operation of the power system, but also cause huge economic losses to the power company. Although the existing detection method can detect the fault of the secondary circuit to a certain extent, it still has certain limitations, such as long detection time, inability to accurately locate the fault point, and high requirements for equipment status.

[0062] In order to solve the above problems, an embodiment of the present application provides a metering secondary circuit fault detection method, which can perform fault warning based on the operating parameter information on the electric energy meter side collected by the extension device of the metering secondary circuit fault detection system, thereby improving the efficiency of fault warning.

[0063] See also Figure 1 , Figure 1 Figure 2 shows a schematic diagram of a metering secondary circuit fault detection system. Figure 1 As shown, the metering secondary circuit fault detection system includes: a host device and an extension device, wherein the host device is set on a server or a monitoring computer, and the extension device is placed on the electric energy meter side, the current transformer side, and the voltage transformer side, respectively. The extension device can be set at the terminal box and the electric energy meter, and the extension device can collect the operating parameter information on the electric energy meter side, and the operating parameter information includes the first voltage of the transformer, the second voltage of the electric energy meter, the attribute information of the secondary load of the transformer, etc. The extension device is equipped with a current and voltage measurement module, a collection module, a data processing module, etc., which can measure the current and voltage at the electric energy meter end and collect data in the electric energy meter.

[0064] The main detection method is: three extensions collect data from three points, and the host performs data processing. The following functions are realized: ① Through data analysis, the secondary circuit operation fault between the transformer and the electric energy meter is determined: open circuit, short circuit, shunt, loss of pressure, etc. If there is a fault. Issue an alarm message. ② According to the data, calculate the secondary voltage drop value from the electric energy meter to the voltage transformer (including parameters such as ratio difference and phase difference), and determine whether it meets the requirements of the regulations. ③ According to the data, calculate the secondary load of the current transformer (including the in-phase component, quadrature component and power factor of the secondary load of the transformer), and determine whether it meets the requirements of the regulations. ④ According to the data, calculate the secondary load of the voltage transformer (including the in-phase component, quadrature component and power factor of the secondary load of the transformer), and determine whether it meets the requirements of the regulations. In addition to determining the fault point through data, it is also necessary to calculate the secondary voltage drop value of the voltage transformer; secondary load of the current transformer; secondary load of the voltage transformer)

[0065] See also Figure 2 , Figure 2 A flow chart of a method for detecting a secondary metering circuit fault is provided for an embodiment of the present application. Figure 2 As shown, the method is applied to the host device of the metering secondary circuit fault detection system, the metering secondary circuit fault detection system includes the host device and the extension device, the extension device is arranged on the electric energy meter side, the current transformer side and the voltage transformer side, the method includes:

[0066] 201. Obtain the operating parameter information of the secondary circuit through the extension device.

[0067] The extension device can be set at the terminal box and the electric energy meter. Specifically, the operating parameter information of the electric energy meter side and the terminal box can be collected. The operating parameter information includes the first voltage of the transformer, the second voltage of the electric energy meter, the attribute information of the secondary load of the transformer, etc.

[0068] 202. Determine operation fault information on the electric energy meter side according to the operation parameter information.

[0069] Among them, the first voltage of the transformer and the second voltage of the electric energy meter can be extracted from the operating parameter information, and then the voltage drop error information is calculated using the first voltage and the second voltage, and then the attribute information of the secondary load of the transformer is extracted from the operating parameter information, and then the operating fault information is determined by combining the voltage drop error information and the attribute information. The operating fault information may include whether there is an operating fault, whether there is an operating fault, etc., as well as the fault occurrence point, fault parameters, etc. The attribute information includes the in-phase component, orthogonal component and power factor of the secondary load, etc. The fault information includes: operating faults of the secondary circuit between the transformer and the electric energy meter: open circuit, short circuit, shunt, loss of pressure, etc.

[0070] 203. If the operation fault information indicates that there is an operation fault on the electric energy meter side, a fault warning is performed according to the operation fault information.

[0071] Fault warning can be performed based on the fault occurrence point and fault parameters in the operation fault information. Specifically, it can be: according to the fault level of the fault occurrence point, a target fault level is obtained; according to the target fault level, reference fault warning information is determined; the fault parameters are configured in the reference fault warning information to obtain the target fault warning information; and the target fault warning information is displayed. Different fault occurrence points have their corresponding fault levels, and the fault levels are set by empirical values ​​or historical data. The higher the fault level, the greater the loss caused by the fault, and the lower the fault level, the smaller the loss caused by the fault. Configuring the fault parameters in the reference fault warning information to obtain the target fault warning information can be specifically: setting the fault parameter configuration to the corresponding position in the reference fault warning information, thereby obtaining the target fault warning information.

[0072] In this example, the operating parameter information of the secondary circuit is obtained through the extension device, and the operating fault information on the electric energy meter side is determined based on the operating parameter information. If the operating fault information indicates that there is an operating fault on the electric energy meter side, a fault warning is performed based on the operating fault information. Therefore, a fault warning can be performed based on the operating parameter information on the electric energy meter side collected by the extension device of the metering secondary circuit fault detection system, thereby improving the efficiency of fault warning.

[0073] In a possible implementation, a method for determining operation fault information on an electric energy meter side according to the operation parameter information includes:

[0074] A1. extracting a first voltage of the mutual inductor on the electric energy meter side and a second voltage of the electric energy meter from the operating parameter information;

[0075] A2. calculating voltage drop error information according to the first voltage and the second voltage;

[0076] A3. extracting attribute information of the secondary load of the transformer from the operating parameter information;

[0077] A4. Determine the load value of the transformer at rated secondary output according to the attribute information;

[0078] A5. Determine fault operation information according to the voltage drop error information and the load value.

[0079] The voltage drop value can be calculated according to the voltage value of the first voltage and the voltage value of the second voltage; and the ratio difference and phase difference of the voltage drop can be calculated, and finally the voltage drop error information can be calculated. Specifically, a general calculation method can be used to calculate and obtain the voltage drop error information. The voltage drop value is the voltage drop value between the electric energy meter and the voltage transformer, and it is determined whether it meets the requirements of the regulations.

[0080] The in-phase component, quadrature component and power factor of the secondary load can be extracted from the attribute information of the secondary load, and the load value at the rated secondary output can be calculated according to the in-phase component, quadrature component and power factor of the secondary load. The secondary load is the secondary load of the voltage and current transformer, and it is determined whether it meets the requirements of the regulations.

[0081] A first deviation value between the voltage drop error information and the preset voltage drop error information, and a second deviation value between the load value at the rated secondary output and the preset load value can be extracted; the first deviation value and the second deviation value are normalized to obtain a normalized first deviation value and a normalized second deviation value; a weight operation is performed on the normalized first deviation value and the normalized second deviation value to obtain a fault score value. Fault operation information is determined based on the fault score value. A general normalization processing method can be used for normalization processing to obtain a normalized first deviation value and a normalized second deviation value.

[0082] In a possible implementation, determining the load value of the transformer at rated secondary output according to the attribute information includes:

[0083] B1. extracting the in-phase component, quadrature component and power factor of the secondary load from the attribute information of the secondary load;

[0084] B2. Calculating the admittance value and impedance value of the transformer according to the in-phase component, the quadrature component and the power factor;

[0085] B3. Determine the load value of the transformer at rated secondary output according to the admittance value and impedance value.

[0086] Among them, the admittance value and impedance value can be calculated by using a general method of using in-phase components, orthogonal components and power factors to calculate the admittance value and impedance value of the transformer, and finally the load value of the transformer at rated secondary output can be calculated based on the secondary data load value calculation formula.

[0087] In a possible implementation, determining the operation fault information on the electric energy meter side according to the operation parameter information includes:

[0088] C1. extracting terminal current information and terminal voltage information on the electric energy meter side from the operating parameter information;

[0089] C2. Determine the operation fault information on the electric energy meter side according to the terminal current information and the terminal voltage information.

[0090] Among them, after extracting the terminal current information and terminal voltage information on the electric energy meter side, the terminal current information and terminal voltage information of the terminal box can also be extracted from the operation parameter information; the difference between the terminal currents and the difference between the terminal voltages are calculated respectively; and the operation fault information is determined by using the difference between the terminal currents and the difference between the terminal voltages. Specifically, it is possible to determine whether there is a shunt fault in the secondary circuit based on the difference between the currents, and to determine whether there is an open circuit fault in the secondary circuit based on the difference between the terminal voltages, thereby obtaining the operation fault information.

[0091] In a possible implementation, the method further includes:

[0092] D1. If the operation fault information indicates that there is an operation fault on the electric energy meter side, extracting fault parameters according to the operation fault information;

[0093] D2. determining a fault factor according to the fault parameter;

[0094] D3. determining a fault event according to the fault factor;

[0095] D4. Send the fault event to the server.

[0096] The fault parameters may include current fault parameters and voltage fault parameters.

[0097] When the fault parameter is a voltage fault parameter, the corresponding fault factor is an open circuit fault. When the fault parameter is a current fault parameter, the corresponding fault factor is a shunt fault. The fault event corresponding to the open circuit fault may be a shunt fault in the secondary circuit, and the fault event corresponding to the shunt fault is a shunt fault in the secondary circuit. Finally, the fault event is sent to the server. After receiving the fault event, the server stores the fault event and issues a fault warning. Specifically, the fault event can be sent to the corresponding maintenance personnel in the form of a notification. After receiving the fault event notification, the maintenance personnel can quickly respond to the fault, thereby improving the efficiency of fault handling.

[0098] In a specific implementation, the present application embodiment also provides another metering secondary circuit fault detection method, specifically:

[0099] The host and extension are installed on the power meter panel and the transformer secondary terminal box respectively. The host and extension collect and process data respectively, and compare data. The host displays the measurement results by connecting to a computer or exports data through the port or transmits data back through the main station.

[0100] 1. The host is equipped with a USB interface to export measurement data. This device is similar to an electric energy meter and is collected and transmitted back to the main station through the terminal.

[0101] 2. Main extension location

[0102] The host is placed on the PC for data processing;

[0103] The extension is placed at the terminal box and on the side of the energy meter.

[0104] 3. Extension configuration:

[0105] The extension is equipped with current and voltage measurement units and data processing modules.

[0106] 4. Implementation functions:

[0107] The extension can measure the voltage at the transformer end, the voltage drop between the transformer end and the electric energy meter end, as well as the ratio difference and phase difference of the voltage drop, and automatically calculate the voltage drop error. The result is fed back to the host end for display.

[0108] The extension can measure the in-phase component, quadrature component and power factor of the transformer secondary load, automatically calculate the admittance value, impedance value and convert the load value of the transformer at rated secondary output, and feed back the results to the host for display.

[0109] The main and extension units compare the currents at both ends to determine whether there is a shunt fault in the secondary circuit between the terminal box and the energy meter, and feed the results back to the main unit for display.

[0110] The main and extension units compare the voltages at both ends to determine whether there is an open circuit fault in the secondary circuit between the terminal box and the energy meter, and feed the results back to the host for display.

[0111] Set up three extensions. The current loop acquisition extension is placed in the current transformer terminal box, the voltage loop acquisition extension is placed in the voltage transformer terminal box, and the energy meter acquisition extension is placed on the side of the energy meter. The host is placed on the PC side for data processing.

[0112] Main functions: This device can be installed on site with power supply, or it can be used with batteries for short-term measurement. A variety of plugs to meet different terminals. The energy meter extension can measure independently as a standard. Compare the data with the energy meter installed on site. Calculate the error of the energy meter.

[0113] The metering secondary circuit fault detection system can be widely used in important power users such as substation intervals, dedicated transformer customers and Internet customers. The metering secondary circuit fault detection system can help solve the problem of abnormal line loss in substations. Through real-time monitoring of the metering secondary circuit, the metering secondary circuit fault detection system can promptly detect abnormal line loss and provide fault location information, so that operation and maintenance personnel can quickly take measures to reduce line loss. For large customers such as dedicated transformer customers and Internet customers, the metering secondary circuit fault detection system can solve the problem of difficulty in recovering electricity bills due to metering failures. Through real-time monitoring and fault warning, the metering secondary circuit fault detection system can ensure the accuracy and reliability of metering, thereby protecting the company's economic interests and avoiding the risk of electricity bill recovery caused by metering failures. Through real-time monitoring and data analysis, the metering secondary circuit fault detection system can promptly detect metering secondary circuit faults and issue warnings, so that operation and maintenance personnel can handle the faults in a timely manner to avoid the impact of faults on the company's interests. It can also reduce the frequency of manual inspections and reduce the workload of on-site operation and maintenance. Through remote monitoring and data analysis, operation and maintenance personnel can monitor and manage metering secondary circuits more efficiently and improve work efficiency. This reduces on-site operations and operational safety risks, ensuring the safety of operation and maintenance personnel.

[0114] The main and sub-monitoring devices (host equipment, sub-devices) are used to monitor and analyze the key parameters of the metering secondary circuit, such as current and voltage, in real time, so as to realize the online operation and maintenance of the metering secondary circuit and provide timely warning when a fault occurs. It can conduct all-round real-time monitoring of the running electric energy metering secondary circuit to ensure the safe and reliable operation of the metering secondary circuit.

[0115] The metering secondary circuit fault detection system can monitor and analyze the key parameters such as current and voltage of the metering secondary circuit in real time through the main and sub-monitoring devices, so as to realize the online operation and maintenance of the operating status of the metering secondary circuit, timely discover metering faults, effectively reduce power loss and protect the interests of the company.

[0116] For the above embodiments, please refer to Figure 3 , Figure 3 A schematic diagram of the structure of a terminal provided in an embodiment of the present application, such as Figure 3 As shown, it includes a processor, an input device, an output device and a memory, which are connected to each other, wherein the memory is used to store a computer program, the computer program includes program instructions, the processor is configured to call the program instructions, and the program includes instructions for executing the following steps;

[0117] Obtain the operating parameter information of the secondary circuit through the extension equipment;

[0118] Determine the operation fault information on the electric energy meter side according to the operation parameter information;

[0119] If the operation fault information indicates that there is an operation fault on the electric energy meter side, a fault warning is performed according to the operation fault information.

[0120] In this example, the operating parameter information of the secondary circuit is obtained through the extension device, and the operating fault information on the electric energy meter side is determined based on the operating parameter information. If the operating fault information indicates that there is an operating fault on the electric energy meter side, a fault warning is performed based on the operating fault information. Therefore, a fault warning can be performed based on the operating parameter information on the electric energy meter side collected by the extension device of the metering secondary circuit fault detection system, thereby improving the efficiency of fault warning.

[0121] The above mainly introduces the scheme of the embodiment of the present application from the perspective of the execution process on the method side. It is understandable that in order to realize the above functions, the terminal includes a hardware structure and / or software module corresponding to the execution of each function. Those skilled in the art should easily realize that, in combination with the units and algorithm steps of each example described in the embodiments provided herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0122] The embodiment of the present application can divide the terminal into functional units according to the above method example. For example, each functional unit can be divided according to each function, or two or more functions can be integrated into one processing unit. The above integrated unit can be implemented in the form of hardware or in the form of software functional units. It should be noted that the division of units in the embodiment of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation.

[0123] In line with the above, see Figure 4 , Figure 4 The present invention provides a schematic diagram of the structure of a metering secondary circuit fault detection device. Figure 4 As shown, the metering secondary circuit fault detection device is applied to the host device of the metering secondary circuit fault detection system, the metering secondary circuit fault detection system includes the host device and the extension device, and the device includes:

[0124] The acquisition unit 401 is used to acquire the operating parameter information of the secondary circuit through the extension device;

[0125] A determination unit 402, configured to determine operation fault information on the electric energy meter side according to the operation parameter information;

[0126] The sending unit 403 is configured to issue a fault warning according to the operation fault information if the operation fault information indicates that there is an operation fault on the electric energy meter side.

[0127] In this example, the operating parameter information of the secondary circuit is obtained through the extension device, and the operating fault information on the electric energy meter side is determined based on the operating parameter information. If the operating fault information indicates that there is an operating fault on the electric energy meter side, a fault warning is performed based on the operating fault information. Therefore, a fault warning can be performed based on the operating parameter information on the electric energy meter side collected by the extension device of the metering secondary circuit fault detection system, thereby improving the efficiency of fault warning.

[0128] In a possible implementation, the determining unit 401 is specifically configured to:

[0129] Extracting a first voltage of a mutual inductor on the electric energy meter side and a second voltage of the electric energy meter from the operation parameter information;

[0130] Calculating voltage drop error information according to the first voltage and the second voltage;

[0131] Extracting attribute information of the secondary load of the transformer from the operating parameter information;

[0132] Determine the load value of the transformer at rated secondary output according to the attribute information;

[0133] Fault operation information is determined according to the voltage drop error information and the load value.

[0134] In a possible implementation, in determining the load value of the rated secondary output of the transformer according to the attribute information, the determining unit 401 is specifically configured to:

[0135] extracting the in-phase component, quadrature component and power factor of the secondary load from the attribute information of the secondary load;

[0136] Calculating the admittance value and impedance value of the mutual inductor according to the in-phase component, the quadrature component and the power factor;

[0137] The load value of the transformer at rated secondary output is determined according to the admittance value and the impedance value.

[0138] In a possible implementation, the determining unit 401 is specifically configured to:

[0139] Extracting terminal current information and terminal voltage information on the electric energy meter side from the operating parameter information;

[0140] The operation fault information on the electric energy meter side is determined according to the terminal current information and the terminal voltage information.

[0141] In a possible implementation, the device is further used for:

[0142] If the operation fault information indicates that there is an operation fault on the electric energy meter side, extracting fault parameters according to the operation fault information;

[0143] determining a fault factor according to the fault parameter;

[0144] determining a fault event according to the fault factor;

[0145] The fault event is sent to a server.

[0146] An embodiment of the present application also provides a computer storage medium, wherein the computer storage medium stores a computer program for electronic data exchange, and the computer program enables a computer to execute part or all of the steps of any metering secondary circuit fault detection method recorded in the above method embodiments.

[0147] An embodiment of the present application also provides a computer program product, which includes a non-transitory computer-readable storage medium storing a computer program, and the computer program enables a computer to execute part or all of the steps of any metering secondary circuit fault detection method recorded in the above method embodiments.

[0148] It should be noted that, for the aforementioned method embodiments, for the sake of simplicity, they are all expressed as a series of action combinations, but those skilled in the art should be aware that the present application is not limited by the described order of actions, because according to the present application, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present application.

[0149] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0150] In the several embodiments provided in the present application, it should be understood that the disclosed device can be implemented in other ways. For example, the device embodiments described above are only schematic, such as the division of the units, which is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, and the indirect coupling or communication connection of the device or unit can be electrical or other forms.

[0151] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0152] In addition, the functional units in the various embodiments of the application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated units may be implemented in the form of hardware or in the form of software program modules.

[0153] If the integrated unit is implemented in the form of a software program module and sold or used as an independent product, it can be stored in a computer-readable memory. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a memory, including a number of instructions to enable a computer device (which can be a personal computer, server or network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned memory includes: U disk, read-only memory (ROM), random access memory (RAM), mobile hard disk, disk or optical disk and other media that can store program codes.

[0154] A person skilled in the art can understand that all or part of the steps in the various methods of the above embodiments can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable memory, which can include: a flash drive, a read-only memory, a random access memory, a magnetic disk or an optical disk, etc.

[0155] The embodiments of the present application are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. At the same time, for general technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A method for detecting faults in a metering secondary circuit, characterized in that: A host device applied to a metering secondary circuit fault detection system, the metering secondary circuit fault detection system comprising a host device and an extension device, the method comprising: Obtain the operating parameter information of the secondary circuit through the extension equipment; Determine the operation fault information on the electric energy meter side according to the operation parameter information; If the operation fault information indicates that there is an operation fault on the electric energy meter side, a fault warning is performed according to the operation fault information.

2. The metering secondary circuit fault detection method according to claim 1 is characterized in that: The determining the operation fault information on the electric energy meter side according to the operation parameter information includes: Extracting a first voltage of a mutual inductor on the electric energy meter side and a second voltage of the electric energy meter from the operation parameter information; Calculating voltage drop error information according to the first voltage and the second voltage; Extracting attribute information of the secondary load of the transformer from the operating parameter information; Determine the load value of the transformer at rated secondary output according to the attribute information; Fault operation information is determined according to the voltage drop error information and the load value.

3. The metering secondary circuit fault detection method according to claim 2 is characterized in that: The step of determining the load value of the transformer at rated secondary output according to the attribute information includes: Extracting the in-phase component, quadrature component and power factor of the secondary load from the attribute information of the secondary load; Calculating the admittance value and impedance value of the mutual inductor according to the in-phase component, the quadrature component and the power factor; The load value of the transformer at rated secondary output is determined according to the admittance value and the impedance value.

4. The metering secondary circuit fault detection method according to claim 1 is characterized in that: The determining the operation fault information on the electric energy meter side according to the operation parameter information includes: Extracting terminal current information and terminal voltage information on the electric energy meter side from the operating parameter information; The operation fault information on the electric energy meter side is determined according to the terminal current information and the terminal voltage information.

5. The metering secondary circuit fault detection method according to any one of claims 1 to 4, characterized in that: The method further comprises: If the operation fault information indicates that there is an operation fault on the electric energy meter side, extracting fault parameters according to the operation fault information; determining a fault factor according to the fault parameter; determining a fault event according to the fault factor; The fault event is sent to a server.

6. A metering secondary circuit fault detection device, characterized in that: A host device applied to a metering secondary circuit fault detection system, the metering secondary circuit fault detection system comprises a host device and an extension device, the device comprises: An acquisition unit, used to acquire operating parameter information of the secondary circuit through an extension device; A determination unit, configured to determine operation fault information on the electric energy meter side according to the operation parameter information; The sending unit is used to issue a fault warning according to the operation fault information if the operation fault information indicates that there is an operation fault on the electric energy meter side.

7. The metering secondary circuit fault detection device according to claim 6, characterized in that: The determining unit is specifically used for: Extracting a first voltage of a mutual inductor on the electric energy meter side and a second voltage of the electric energy meter from the operation parameter information; Calculating voltage drop error information according to the first voltage and the second voltage; Extracting attribute information of the secondary load of the transformer from the operating parameter information; Determine the load value of the transformer at rated secondary output according to the attribute information; Fault operation information is determined according to the voltage drop error information and the load value.

8. The metering secondary circuit fault detection device according to claim 7, characterized in that: In terms of determining the load value of the rated secondary output of the transformer according to the attribute information, the determining unit is specifically used to: extracting the in-phase component, quadrature component and power factor of the secondary load from the attribute information of the secondary load; Calculating the admittance value and impedance value of the mutual inductor according to the in-phase component, the quadrature component and the power factor; The load value of the transformer at rated secondary output is determined according to the admittance value and the impedance value.

9. A terminal, characterized in that: It includes a processor, an input device, an output device and a memory, which are interconnected, wherein the memory is used to store a computer program, the computer program includes program instructions, and the processor is configured to call the program instructions to execute the metering secondary circuit fault detection method as described in any one of claims 1 to 5.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, wherein the computer program includes program instructions, and when the program instructions are executed by a processor, the processor executes the metering secondary circuit fault detection method according to any one of claims 1 to 5.

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