Substation load test system, test method and electronic device

Abstract

This invention discloses a substation load testing system, testing method, and electronic equipment. The system includes: a primary system construction module for acquiring the connection relationships of primary equipment within the substation under test; a multi-source analog quantity acquisition module for acquiring analog quantity data of corresponding intervals based on multiple data acquisition paths; and a calculation and verification module, connected to both the primary system construction module and the multi-source analog quantity acquisition module, for comparing the connection relationships of primary equipment based on test requirements, determining the interval under test and associated intervals under test, calculating the internal power of the interval under test and the reference power data corresponding to the associated intervals under test based on the analog quantity data corresponding to the connection logic of the interval under test, and verifying the internal power and reference power data of the interval. This invention, by acquiring and comparing multi-source analog quantity data through different data acquisition paths, can quickly and accurately evaluate the load test results, improving testing efficiency and the accuracy of test results.

Description

Technical Field

[0001] This invention relates to the field of substation testing technology, and in particular to a substation load testing system, testing method and electronic equipment. Background Technology

[0002] In substations, whenever a new bay is put into operation, protection is upgraded, terminal box is replaced, or current transformer is replaced, any work involving the secondary current circuit must be carried out with a load current to test the changing secondary current circuit during the first power-on, in order to determine whether the wiring after the replacement is correct.

[0003] In existing technologies, load testing typically employs the following method: First, operators use a phase meter to measure and record data for each secondary current circuit involved; then, a corresponding vector hexagon diagram is drawn based on the recorded data; finally, the operator analyzes the vector hexagon diagram to determine whether the wiring of the corresponding secondary current circuit is correct. Existing technologies have the following problems: the testing process is time-consuming, and the test results rely excessively on human experience. Improper operation by the operator can lead to deviations in the recorded data, affecting the accuracy of subsequent judgments; when manually analyzing the measurement results, misjudgments are prone to occur if there are no experienced and theoretically knowledgeable personnel on-site to oversee the process; during the measurement process, it is difficult to simultaneously measure the secondary current circuits of multiple different windings, resulting in significant deviations in the recorded data for different windings when load fluctuations occur, making horizontal comparison inconvenient and reducing practicality. Summary of the Invention

[0004] This invention provides a substation load testing system, testing method, and electronic equipment to solve the problems of long testing time, low measurement accuracy, and high misjudgment rate caused by the existing manual load testing. It can quickly and accurately evaluate the load test results.

[0005] According to one aspect of the present invention, a substation load testing system is provided, comprising: a primary system construction module for acquiring the connection relationship of primary equipment in the substation under test; a multi-source analog quantity acquisition module for acquiring analog quantity data of corresponding intervals based on multiple data acquisition paths, wherein the analog quantity data includes at least one of the following: current analog quantity data, voltage analog quantity data, and power analog quantity data; and a calculation and verification module connected to the primary system construction module and the multi-source analog quantity acquisition module, respectively, for comparing the connection relationship of the primary equipment based on the test requirements, determining the interval under test and the associated interval under test, calculating the internal power of the interval under test and the reference power data corresponding to the associated interval under test based on the analog quantity data corresponding to the connection logic of the interval under test, and verifying the internal power of the interval and the reference power data.

[0006] Optionally, the multi-source analog quantity acquisition module includes at least two of the following: a background telemetry data acquisition module, a fault recording device analog quantity acquisition module, a protection device analog quantity acquisition module, a safety automatic device analog quantity acquisition module, and a metering analog quantity acquisition module.

[0007] Optionally, the background telemetry data acquisition module is connected to the background monitoring system of the substation under test to acquire the analog data collected by the measurement and control device pushed by the background monitoring system; and / or, the fault recording device analog acquisition module and the protection device analog acquisition module are connected to the intelligent waveform recorder in the substation under test to acquire the analog data collected by the protection device and the fault recording device pushed by the intelligent waveform recorder; and / or, the safety automatic device analog acquisition module is connected to the safety automatic station of the substation under test to acquire the analog data collected by the safety automatic device pushed by the safety automatic station; and / or, the metering analog acquisition module is connected to the metering center master station of the substation under test to acquire the analog data collected by the metering instrument pushed by the metering center master station.

[0008] Optionally, the primary equipment connection relationship is established based on the voltage level, number of incoming lines, number of feeders, and corresponding intervals of the primary equipment in the substation under test; wherein, the primary equipment in the substation includes at least: main transformer, capacitor, and station service transformer.

[0009] Optionally, the power inside the interval is the power data of different windings of the current transformer in the interval to be tested; wherein, the windings include: protection winding, measurement winding, fault recording winding and metering winding.

[0010] Optionally, the calculation and verification module is configured to: verify the power within the interval based on the equality of power corresponding to different windings within the same interval; wherein, the equality of power includes the equality of reactive power and the equality of active power.

[0011] Optionally, the calculation and verification module is configured to: verify the reference power data corresponding to the test interval based on the power conservation between adjacent intervals; wherein the power conservation includes reactive power conservation and active power conservation.

[0012] Optionally, the substation load testing system further includes: an alarm module connected to the calculation and verification module, used to display an alarm message and prompt manual intervention when either the power inside the bay or the reference power data fails verification; and / or, to display that the load test is qualified when both the power inside the bay and the reference power data pass verification.

[0013] Secondly, embodiments of the present invention provide a method for load testing of a substation, comprising: acquiring the connection relationship of primary equipment in the substation under test; acquiring analog quantity data of corresponding intervals based on multiple data acquisition paths, wherein the analog quantity data includes at least one of the following: analog current quantity data, analog voltage quantity data, and analog power quantity data; comparing the test requirements with the connection relationship of the primary equipment to determine the interval under test and the associated interval under test; calculating the internal power of the interval under test and the reference power data corresponding to the associated interval under test based on the analog quantity data corresponding to the connection logic of the interval under test; and verifying the internal power of the interval and the reference power data.

[0014] Thirdly, embodiments of the present invention provide an electronic device, the electronic device comprising: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores a computer program executable by the at least one processor, the computer program being executed by the at least one processor to enable the at least one processor to perform the above-described substation load testing method.

[0015] The technical solution of this invention includes a primary system construction module, a multi-source analog quantity acquisition module, and a calculation and verification module. The primary system construction module acquires the connection relationships of primary equipment in the substation under test. The multi-source analog quantity acquisition module acquires analog quantity data of corresponding intervals based on multiple data acquisition paths. The calculation and verification module compares the test requirements with the primary equipment connection relationships to determine the interval under test and the associated intervals under test. Based on the analog quantity data corresponding to the connection logic of the interval under test, the module calculates the internal power of the interval under test and the reference power data corresponding to the associated intervals under test, and verifies the internal power and reference power data. This solves the problems of long testing time, low measurement accuracy, and high misjudgment rate caused by the existing manual method of performing load tests, and enables rapid and accurate evaluation of load test results.

[0016] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1This is a schematic diagram of the structure of a substation load testing system provided in Embodiment 1 of the present invention;

[0019] Figure 2 This is a schematic diagram of another substation load testing system provided in Embodiment 1 of the present invention;

[0020] Figure 3 This is a schematic diagram of another substation load testing system provided in Embodiment 1 of the present invention;

[0021] Figure 4 This is a flowchart of a substation load testing method provided in Embodiment 2 of the present invention;

[0022] Figure 5 This is a schematic diagram of the structure of an electronic device that implements the substation load testing method according to an embodiment of the present invention. Detailed Implementation

[0023] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0024] It should be noted that the terms "comprising" and "having" and any variations thereof in the specification, claims and accompanying drawings of this invention are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such process, method, product or device.

[0025] Example 1

[0026] Figure 1 This is a schematic diagram of a substation load testing system according to Embodiment 1 of the present invention. This embodiment is applicable to application scenarios where load current is used to perform load testing on a variable secondary current loop. The secondary current loop refers to the current loop on the secondary side of the substation. Current transformers, based on a specific transformation ratio, sense the secondary current and use it for measurement, protection, metering, and other purposes.

[0027] See Figure 1 As shown, the substation load testing system of this application includes: a primary system construction module 100, a multi-source analog quantity acquisition module 200, and a calculation and verification module 300.

[0028] The primary system construction module 100 is used to acquire the connection relationships of primary equipment within the substation under test. Primary equipment refers to devices that directly produce, transmit, and distribute electrical energy. Typically, primary equipment includes, but is not limited to, generators, transformers, circuit breakers, disconnectors, busbars, feeders, and capacitors. In substation design, incoming lines, main transformer high-voltage, main transformer low-voltage, main transformers, and low-voltage feeders are combined separately, each forming a bay. For example, an incoming line bay is defined as starting from the cable head at the end of the line, consisting of line-side grounding switches, line-side disconnectors, switch-side grounding switches, switches, busbar-side disconnectors, and busbar grounding switches; all electrical equipment constitutes the incoming line bay. The primary equipment connection relationships are used to characterize the connection relationships between different bays. In this embodiment, the primary equipment connection relationships can be generated by importing the System Specification Description (SCD) file from the Substation Configuration Description (SCD) using a format similar to the primary wiring diagram of the substation's back-end monitoring system.

[0029] The multi-source analog quantity acquisition module 200 is used to acquire analog quantity data of corresponding intervals based on multiple data acquisition paths. In this embodiment, the analog quantity data includes at least one of the following: current analog quantity data, voltage analog quantity data, and power analog quantity data. The power analog quantity data includes active power and reactive power. In this embodiment, the data acquisition paths include, but are not limited to: data acquisition paths based on the substation background monitoring system, data acquisition paths based on intelligent waveform recorders, data acquisition paths based on safety automatic devices, and data acquisition paths based on metering instruments. The intelligent waveform recorder is a device that can be applied to both intelligent and conventional substations, integrating fault recording, network recording analysis, secondary system visualization, intelligent operation and maintenance, and remote transmission functions. Safety automatic devices include, but are not limited to: load shedding, disconnection, and automatic switching devices for backup incoming lines. Metering instruments include, but are not limited to: electricity meters, ammeters, voltmeters, active power meters, reactive power meters, and thermometers. It should be noted that the type and number of data acquisition paths in the multi-source analog quantity acquisition module 200 can be expanded or reduced according to actual conditions.

[0030] The calculation and verification module 300 is connected to the primary system construction module 100 and the multi-source analog quantity acquisition module 200, respectively. It is used to compare the connection relationship between the test requirements and the primary equipment to determine the interval to be tested and the associated intervals to be tested. Based on the analog quantity data corresponding to the connection logic of the interval to be tested, it calculates the internal power of the interval under test (such as the power of different windings) and the reference power data corresponding to the associated intervals to be tested, and verifies the internal power and reference power data of the intervals. The test requirements can be the intervals that need to be tested under load. In this embodiment, the test requirements can be set and stored by the operator. In this embodiment, the verification of the internal power and reference power data of the intervals includes: a longitudinal comparison and verification of the internal power of the intervals collected by different multi-source analog quantity acquisition modules 200 within the same interval based on the law of power conservation; and a horizontal comparison and verification of the reference power data between different intervals with connection logic relationships based on the law of power conservation.

[0031] Specifically, before using the substation load testing system of this application, the connection relationship of the primary equipment in the substation under test (such as the primary wiring diagram of the substation under test) is first stored in the primary system construction module 100. During the load test, the multi-source analog quantity acquisition module 200 records the analog quantity data (such as current analog quantity data, voltage analog quantity data, active power and reactive power) of the corresponding interval in real time based on multiple data acquisition paths. After the calculation and verification module 300 obtains the test requirements (i.e., the intervals that need to be tested under load), it compares the intervals in the test requirements with the intervals in the primary equipment connection relationship to determine the interval to be tested and the intervals to be tested that have a connection logic relationship with the interval to be tested; then, based on the analog quantity data corresponding to the connection logic of the interval to be tested, it calculates the internal power (such as winding power) of the interval to be tested and the reference power data corresponding to the interval to be tested, and verifies the internal power and reference power data of the interval. If the power within the same interval acquired by different multi-source analog quantity acquisition modules 200 is not equal, or if the reference power data between different intervals with connection logic does not meet the power balance, the load test is deemed to have failed. If the power within the same interval acquired by different multi-source analog quantity acquisition modules 200 is equal, and the reference power data between different intervals with connection logic meets the power balance, the load test is deemed to have passed.

[0032] Therefore, the technical solution of this invention, by acquiring and comparing multi-source analog data through different data acquisition paths, solves the problems of long testing time, low measurement accuracy, and high misjudgment rate caused by the existing manual method of performing load testing, and can quickly and accurately evaluate the load test results.

[0033] Figure 2This is a schematic diagram of another substation load testing system provided in Embodiment 1 of the present invention. Figure 1 Based on the illustrated embodiment, a specific implementation of a multi-source analog quantity acquisition module is shown. See also... Figure 2 As shown, the multi-source analog quantity acquisition module 200 includes, but is not limited to, at least two of the following: a background telemetry data acquisition module 201, a fault recording device analog quantity acquisition module 202, a protection device analog quantity acquisition module 203, a safety automatic device analog quantity acquisition module 204, and a metering analog quantity acquisition module 205. The type and number of the multi-source analog quantity acquisition modules 200 can be expanded or reduced according to actual needs.

[0034] Optionally, the background telemetry data acquisition module 201 is connected to the background monitoring system 401 of the substation under test to acquire analog data collected by the measurement and control device pushed by the background monitoring system 401; and / or, the fault recording device analog acquisition module 202 and the protection device analog acquisition module 203 are respectively connected to the intelligent recorder 402 in the substation under test to acquire analog data collected by the protection device and the fault recording device pushed by the intelligent recorder 402; and / or, the safety automatic device analog acquisition module 204 is connected to the safety automatic station 403 of the substation under test to acquire analog data collected by the safety automatic device pushed by the safety automatic station 403; and / or, the metering analog acquisition module 205 is connected to the metering center master station 404 of the substation under test to acquire analog data collected by the metering instrument (such as an electricity meter) pushed by the metering center master station 404.

[0035] Optionally, the primary equipment connection relationship is established based on the voltage level, number of incoming lines, number of feeders, and corresponding bays of the primary equipment in the substation under test; wherein, the primary equipment in the substation includes at least: main transformer, capacitors, and station service transformer.

[0036] Optionally, the power inside the interval is the power data of different windings of the current transformer in the interval to be tested; wherein the windings include: protection winding, measurement winding, fault recording winding and metering winding.

[0037] For example, taking a substation under test as a 110kV substation, the primary equipment of the substation under test includes two 110kV incoming lines, one main transformer (#1 main transformer), two 10kV feeders, two 10kV capacitors, and one 10kV station service transformer. First, based on the situation of the primary equipment, the connection relationship of the primary equipment of the substation is constructed in the substation primary system construction module of the system. For example, the 110kV voltage level part includes three bays, such as two 110kV incoming line bays and the #1 main transformer high-voltage bay; the 10kV voltage level part includes six bays, such as two 10kV feeder bays, two 10kV capacitor bays, one 10kV station service transformer bay, and the #1 main transformer low-voltage bay; the main transformer part is the #1 main transformer part, which includes two corresponding bays, namely the #1 main transformer high-voltage bay and the #1 main transformer low-voltage bay. Taking the #1 main transformer height adjustment interval as an example, the #1 main transformer height adjustment interval can be divided into the #1 main transformer protection A set winding, the #1 main transformer protection B set winding, the measurement winding, the fault recording winding, and the metering winding, according to the different uses of the windings of its current transformer. The calculation and verification module 300 obtains the voltage, current, and other vector information corresponding to the #1 main transformer protection A set, the #1 main transformer protection B set, and the #1 main transformer height adjustment interval of the intelligent waveform recorder 402 through the pushed data of the intelligent waveform recorder 402, and calculates the active and reactive power corresponding to the #1 main transformer protection A set, the #1 main transformer protection B set, and the #1 main transformer height adjustment interval of the intelligent waveform recorder 402 through this information. The calculation and verification module 300 also obtains the active and reactive power (i.e., the measurement winding) of the #1 main transformer height adjustment and control device through the pushed data of the background monitoring system 401. The calculation and verification module 300 also obtains the active and reactive power of the #1 main transformer high-voltage meter through the push data from the metering center main station 404. Thus, by connecting to different multi-source analog quantity acquisition modules, it obtains the active and reactive power data of different windings of the current transformer in the same interval of the #1 main transformer high-voltage interval, automatically calculates the active and reactive power data, provides a data basis for longitudinal and transverse comparison verification, has rich data sources, and high calculation accuracy.

[0038] Optionally, the calculation and verification module 300 is configured to: verify the power within the interval based on the equality of power corresponding to different windings within the same interval; wherein, power equality includes reactive power equality and active power equality. Optionally, the calculation and verification module 300 is further configured to: verify the reference power data corresponding to the interval under test based on the power conservation between adjacent intervals; wherein, power conservation includes reactive power conservation and active power conservation.

[0039] For example, continuing with the example of a 110kV substation under test, the primary equipment of the substation includes two 110kV incoming lines, one main transformer (#1 main transformer), two 10kV feeders, two 10kV capacitors, and one 10kV station service transformer. If a load test is to be performed on the #1 main transformer's high-voltage section, firstly, the calculation and verification module 300 uses the power balance calculation module to perform a longitudinal comparison and verification of the active and reactive power data of each winding of the current transformer in the #1 main transformer's high-voltage section. Since the primary current of each winding in the same section is equal, the active and reactive power data of each winding in the same section should be equal. After the longitudinal comparison and verification is passed, the calculation and verification module 300 will generate a reference power data for the #1 main transformer's high-voltage section. Based on the connection relationship of the primary equipment, it can be concluded that the test-related sections with the stored connection logic relationship with the #1 main transformer's high-voltage section include two parts: the 110kV voltage level section and the #1 main transformer section. The calculation and verification module 300 performs a horizontal comparison verification on the #1 main transformer high-voltage bay in both the 110kV voltage level section and the #1 main transformer section. Taking the horizontal comparison verification of the #1 main transformer section as an example, the reference power data of the #1 main transformer low-voltage bay is calculated using data pushed by the multi-source analog quantity acquisition module 200. The power of the #1 main transformer high-voltage bay and the #1 main transformer low-voltage bay included in the #1 main transformer section should be balanced, that is, the sum of their reference power values ​​should be 0. Similarly, the horizontal comparison verification is performed on the 110kV voltage level section (that is, the sum of the reference power values ​​of the #1 main transformer high-voltage bay and the two 110kV incoming line bays should be 0). When the horizontal comparison verification results of the two sections pass, the system will conclude that the #1 main transformer high-voltage bay has passed the load test.

[0040] Figure 3 This is a schematic diagram of another substation load testing system provided in Embodiment 1 of the present invention. See also... Figure 3 As shown, the substation load testing system of this application also includes: an alarm module 500, connected to the calculation and verification module 300, used to display an alarm message and prompt manual intervention when either the power data within the bay or the reference power data fails verification; and / or, to display that the load test is qualified when both the power data within the bay and the reference power data pass verification.

[0041] Optionally, the warning module 500 may adopt at least one of the following: an audible and visual warning unit, a graphic warning unit, or an intelligent display terminal.

[0042] Specifically, if the active power data of any winding in the current transformer within the same bay is not equal to the active power data of other windings, or if the reactive power data of any winding in the current transformer within the same bay is not equal to the reactive power data of other windings, then the calculation and verification module 300 pushes early warning data to the warning module 500, causing the warning module 500 to display early warning information and prompting manual intervention. This facilitates operators in quickly locating abnormalities in load testing and improves the efficiency of substation maintenance.

[0043] Example 2

[0044] Based on the same inventive concept, Embodiment 2 of the present invention provides a method for testing a substation under load, which is implemented based on the above-mentioned substation under load testing system and has the corresponding control strategy and beneficial effects of the above-mentioned substation under load testing system.

[0045] Figure 4 This is a flowchart of a substation load testing method provided in Embodiment 2 of the present invention.

[0046] like Figure 4 As shown, the substation load testing method of this application specifically includes the following steps:

[0047] S1: Obtain the primary equipment connection relationships within the substation under test.

[0048] S2: Obtain analog data at corresponding intervals based on multiple data acquisition paths.

[0049] In this embodiment, the analog data includes at least one of the following: current analog data, voltage analog data, and power analog data.

[0050] S3: Based on the test requirements and the connection relationship of the primary equipment, the test interval and the associated test interval are determined. The internal power of the test interval and the reference power data of the associated test interval are calculated according to the analog data corresponding to the connection logic of the test interval. The internal power of the interval and the reference power data are then verified.

[0051] Optionally, analog data for corresponding intervals can be acquired based on multiple data acquisition paths, including: connecting the background telemetry data acquisition module to the background monitoring system of the substation under test to acquire analog data collected by the measurement and control devices pushed by the background monitoring system; and / or connecting the fault recording device analog acquisition module and the protection device analog acquisition module to the intelligent recorder in the substation under test respectively to acquire analog data collected by the protection device and the fault recording device pushed by the intelligent recorder; and / or connecting the safety automatic device analog acquisition module to the safety automatic station of the substation under test to acquire analog data collected by the safety automatic device pushed by the safety automatic station; and / or connecting the metering analog acquisition module to the metering center master station of the substation under test to acquire analog data collected by the metering instruments pushed by the metering center master station.

[0052] Optionally, the primary equipment connection relationship is established based on the voltage level, number of incoming lines, number of feeders, and corresponding bays of the primary equipment in the substation under test; wherein, the primary equipment in the substation includes at least: main transformer, capacitors, and station service transformer.

[0053] Optionally, the power inside the interval is the power data of different windings of the current transformer in the interval to be tested; wherein the windings include: protection winding, measurement winding, fault recording winding and metering winding.

[0054] Optionally, the power data within the interval and the reference power data are verified, including: verifying the power within the interval based on the equality of power corresponding to different windings within the same interval; wherein, the equality of power includes the equality of reactive power and the equality of active power.

[0055] Optionally, verifying the power data within the interval and the reference power data further includes: verifying the reference power data corresponding to the interval under test based on the power conservation between adjacent intervals; wherein, power conservation includes reactive power conservation and active power conservation.

[0056] Optionally, the substation load test method of this application further includes: displaying a warning message and prompting manual intervention when either the internal power or the reference power data fails the verification; and / or displaying that the load test is qualified when both the internal power and the reference power data pass the verification.

[0057] Example 3

[0058] Based on the same inventive concept, Embodiment 3 of the present invention provides an electronic device, which includes: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores a computer program that can be executed by the at least one processor, and the computer program is executed by the at least one processor to enable the at least one processor to perform the above-described substation load test method.

[0059] Figure 5 A schematic diagram of an electronic device that can be used to implement the substation load testing method of embodiments of the present invention is shown. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workbenches, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processors, cellular phones, smartphones, wearable devices (e.g., helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely illustrative and are not intended to limit the implementation of the invention described and / or claimed herein.

[0060] like Figure 5 As shown, the electronic device 10 includes at least one processor 11 and a memory, such as a read-only memory (ROM) 12 or a random access memory (RAM) 13, communicatively connected to the at least one processor 11. The memory stores computer programs executable by the at least one processor. The processor 11 can perform various appropriate actions and processes based on the computer program stored in the ROM 12 or loaded from storage unit 18 into the RAM 13. The RAM 13 may also store various programs and data required for the operation of the electronic device 10. The processor 11, ROM 12, and RAM 13 are interconnected via a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0061] Multiple components in electronic device 10 are connected to I / O interface 15, including: input unit 16, such as keyboard, mouse, etc.; output unit 17, such as various types of displays, speakers, etc.; storage unit 18, such as disk, optical disk, etc.; and communication unit 19, such as network card, modem, wireless transceiver, etc. Communication unit 19 allows electronic device 10 to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0062] Processor 11 can be a variety of general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special-purpose artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any suitable processor, controller, microcontroller, etc. Processor 11 performs the various methods and processes described above, such as the substation load testing method described above.

[0063] In some embodiments, the above-described substation load testing method can be implemented as a computer program tangibly contained in a computer-readable storage medium, such as storage unit 18. In some embodiments, part or all of the computer program can be loaded and / or installed on electronic device 10 via ROM 12 and / or communication unit 19. When the computer program is loaded into RAM 13 and executed by processor 11, one or more steps of the substation load testing method described above can be performed. Alternatively, in other embodiments, processor 11 can be configured to perform the above-described substation load testing method by any other suitable means (e.g., by means of firmware).

[0064] Various embodiments of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), systems-on-a-chip (SoCs), payload-programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments may include implementations in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general-purpose programmable processor, capable of receiving data and instructions from a storage system, at least one input device, and at least one output device, and transmitting data and instructions to the storage system, the at least one input device, and the at least one output device.

[0065] Computer programs used to implement the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when executed by the processor, the computer programs cause the functions / operations specified in the flowcharts and / or block diagrams to be performed. The computer programs may be executed entirely on a machine, partially on a machine, or as a standalone software package, partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0066] In the context of this invention, a computer-readable storage medium can be a tangible medium that may contain or store a computer program for use by or in conjunction with an instruction execution system, apparatus, or device. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination thereof. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0067] To provide interaction with a user, the systems and techniques described herein can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user provides input to the electronic device. Other types of devices can also be used to provide interaction with the user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including sound input, voice input, or tactile input).

[0068] The systems and technologies described herein can be implemented in computing systems that include backend components (e.g., as data servers), or computing systems that include middleware components (e.g., application servers), or computing systems that include frontend components (e.g., user computers with graphical user interfaces or web browsers through which users can interact with implementations of the systems and technologies described herein), or any combination of such backend, middleware, or frontend components. The components of the system can be interconnected via digital data communication of any form or medium (e.g., communication networks). Examples of communication networks include local area networks (LANs), wide area networks (WANs), blockchain networks, and the Internet.

[0069] A computing system can include clients and servers. Clients and servers are generally located far apart and typically interact through communication networks. The client-server relationship is created by computer programs running on the respective computers and having a client-server relationship with each other. The server can be a cloud server, also known as a cloud computing server or cloud host, which is a hosting product within the cloud computing service system to address the shortcomings of traditional physical hosts and VPS services, such as high management difficulty and weak business scalability.

[0070] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0071] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A substation load testing system, characterized in that, include: The primary system construction module is used to obtain the connection relationships of primary equipment in the substation under test; A multi-source analog quantity acquisition module is used to acquire analog quantity data at corresponding intervals based on multiple data acquisition paths. The analog quantity data includes at least one of the following: current analog quantity data, voltage analog quantity data, and power analog quantity data. The calculation and verification module is connected to the primary system construction module and the multi-source analog quantity acquisition module, respectively. After obtaining the test requirements, it compares the interval in the test requirements with the interval in the primary equipment connection relationship to determine the interval to be tested and the interval to be tested associated with the interval to be tested that has a connection logic relationship with the interval to be tested. Based on the analog quantity data corresponding to the connection logic of the interval to be tested, it calculates the internal power of the interval to be tested and the reference power data corresponding to the interval to be tested associated with the interval to be tested, and verifies the internal power of the interval and the reference power data. Wherein, the power inside the interval is the power data of different windings of the current transformer in the interval to be tested; The calculation and verification module is configured to: verify the power within the interval based on the equality of power corresponding to different windings within the same interval; and verify the reference power data corresponding to the interval to be tested based on the power conservation between adjacent intervals.

2. The substation load testing system according to claim 1, characterized in that, The multi-source analog quantity acquisition module includes at least two of the following: a background telemetry data acquisition module, a fault recording device analog quantity acquisition module, a protection device analog quantity acquisition module, a safety automatic device analog quantity acquisition module, and a metering analog quantity acquisition module.

3. The substation load testing system according to claim 2, characterized in that, The background telemetry data acquisition module is connected to the background monitoring system of the substation under test to acquire the analog data collected by the measurement and control device pushed by the background monitoring system. And / or, The analog quantity acquisition module of the fault recording device and the analog quantity acquisition module of the protection device are respectively connected to the intelligent recorder in the substation under test to obtain the analog quantity data pushed by the intelligent recorder and collected by the protection device and the fault recording device. And / or, The analog quantity acquisition module of the safety automatic device is connected to the safety automatic station of the substation under test to obtain the analog quantity data collected by the safety automatic device pushed by the safety automatic station. And / or, The analog quantity acquisition module is connected to the metering center master station of the substation under test to obtain the analog quantity data collected by the metering instruments pushed by the metering center master station.

4. The substation load testing system according to claim 1, characterized in that, The primary equipment connection relationship is established based on the voltage level, number of incoming lines, number of feeders, and corresponding intervals of the primary equipment in the substation under test. The primary equipment in the station includes at least: a main transformer, capacitors, and station service transformers.

5. The substation load testing system according to claim 1, characterized in that, The windings include: a protection winding, a measurement winding, a fault recording winding, and a metering winding.

6. The substation load testing system according to claim 5, characterized in that, The equal power includes equal reactive power and equal active power.

7. The substation load testing system according to claim 1, characterized in that, The power conservation includes reactive power conservation and active power conservation.

8. The substation load testing system according to any one of claims 1 to 7, characterized in that, Also includes: The warning module, connected to the calculation and verification module, is used to display a warning message and prompt manual intervention when either the power within the interval or the reference power data fails verification; and / or, to display that the load test is qualified when both the power within the interval and the reference power data pass verification.

9. A method for testing a substation under load, applicable to the substation under load testing system as described in any one of claims 1-8, characterized in that, include: Obtain the primary equipment connection relationships within the substation under test; Analog data at corresponding intervals are acquired based on multiple data acquisition paths, and the analog data includes at least one of the following: current analog data, voltage analog data, and power analog data; Based on the test requirements and the connection relationship of the primary equipment, the interval to be tested and the associated interval to be tested are determined. The internal power of the interval to be tested and the reference power data corresponding to the associated interval to be tested are calculated according to the analog data corresponding to the connection logic of the interval to be tested. The internal power of the interval and the reference power data are then verified.

10. An electronic device, characterized in that, The electronic device includes: At least one processor; and A memory communicatively connected to the at least one processor; wherein, The memory stores a computer program that can be executed by the at least one processor, the computer program being executed by the at least one processor to enable the at least one processor to perform the substation load testing method according to claim 9.

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