Transformer substation on-load test system, test method and electronic equipment

Abstract

The invention discloses a transformer substation on-load test system and method and electronic equipment, and the system comprises a primary system construction module which is used for obtaining the connection relation of primary equipment in a to-be-tested transformer substation; the multi-source analog quantity acquisition module is used for acquiring analog quantity data of corresponding intervals based on a plurality of data acquisition paths; the calculation verification module is respectively connected with the primary system construction module and the multi-source analog quantity acquisition module, and is used for comparing with a primary equipment connection relationship based on a test requirement, determining a to-be-tested interval and a to-be-tested associated interval, and sending the to-be-tested interval to the multi-source analog quantity acquisition module; and calculating interval internal power in the interval to be measured and reference power data corresponding to the associated interval to be measured according to the analog quantity data corresponding to the connection logic of the interval to be measured, and verifying the interval internal power and the reference power data. According to the method, the multi-source analog quantity data is acquired and compared through different data acquisition paths, so that the on-load test result can be quickly and accurately evaluated, and the test efficiency and the accuracy of the test result are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of substation testing, and in particular to a substation load testing system, a testing method and electronic equipment. Background Art

[0002] In a substation, whenever a new interval is put into operation, protection modification is performed, terminal box replacement is performed, or current transformer replacement is performed, or other work involving the secondary current circuit is performed, it is necessary to perform a load test on the changed secondary current circuit with load current when power is supplied for the first time to determine whether the wiring after replacement is correct.

[0003] In the prior art, when conducting a load test, the following method is usually adopted: first, the operator uses a phase meter to measure the secondary current loops involved one by one and record the data; then, the corresponding vector hexagonal diagram is drawn according to the recorded data; finally, the operator analyzes the vector hexagonal diagram to determine whether the wiring of the corresponding secondary current loop is correct. The prior art has the following problems: the test process is time-consuming, and the test results are overly dependent on manual experience. When the operator operates improperly, the recorded data will be biased, affecting the correctness of subsequent judgments; when the measurement results are manually analyzed, if there is no person with rich experience and theoretical knowledge to control on site, misjudgment is prone to occur; during the measurement process, it is difficult to simultaneously measure the secondary current loops of multiple different windings, resulting in large deviations in the recorded data of different windings when load fluctuations occur, which is inconvenient for horizontal comparison and poor practicality. Summary of the invention

[0004] The present invention provides a substation load test system, test method and electronic equipment to solve the problems of the existing manual load test, which results in a long test process, low measurement data accuracy and high misjudgment rate, and can quickly and accurately evaluate the load test results.

[0005] According to one aspect of the present invention, there is provided a substation load test system, comprising: a primary system construction module, for obtaining the connection relationship of primary equipment in the substation to be tested; a multi-source analog quantity acquisition module, for obtaining analog quantity data of corresponding intervals based on multiple data acquisition paths, the analog quantity data comprising at least one of the following: current analog quantity data, voltage analog quantity data and power analog quantity data; a calculation and verification module, respectively connected to the primary system construction module and the multi-source analog quantity acquisition module, for comparing with the connection relationship of the primary equipment based on test requirements, determining the interval to be tested and the associated interval to be tested, calculating the interval internal power within the interval to be tested and the reference power data corresponding to the associated interval to be tested according to the analog quantity data corresponding to the connection logic of the interval to be tested, and verifying the interval internal power 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 to be tested, so as to obtain the analog data collected by the measurement and control device pushed by the background monitoring system; and / or, the fault recording device analog quantity acquisition module and the protection device analog quantity acquisition module are connected to the intelligent recorder in the substation to be tested, so as to obtain the analog quantity data collected by the protection device and the fault recording device pushed by the intelligent recorder; and / or, the safety automatic device analog quantity acquisition module is connected to the safety master station of the substation to be tested, so as to obtain the analog quantity data collected by the safety automatic device pushed by the safety master station; and / or, the metering analog quantity acquisition module is connected to the metering center master station of the substation to be tested, so as to obtain the analog quantity 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 substation to be tested, wherein the primary equipment in the station includes at least: a main transformer, capacitors and a station transformer.

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

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

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

[0012] Optionally, the substation load test system also includes: a warning module, connected to the calculation verification module, for displaying a warning message to prompt manual intervention when either the internal power of the interval or the benchmark power data fails to pass the verification; and / or, when both the internal power of the interval and the benchmark power data pass the verification, displaying that the load test is qualified.

[0013] In the second aspect, an embodiment of the present invention provides a method for load testing a substation, comprising: obtaining a connection relationship of a primary device in the substation to be tested; obtaining analog data of a corresponding interval based on multiple data acquisition paths, the analog data comprising at least one of the following: current analog data, voltage analog data and power analog data; determining an interval to be tested and an associated interval to be tested based on a comparison between the test requirements and the connection relationship of the primary device, calculating the internal power of the interval to be tested and the reference power data corresponding to the associated interval to be tested according to the analog data corresponding to the connection logic of the interval to be tested, and verifying the internal power of the interval and the reference power data.

[0014] In a third aspect, an embodiment of the present invention provides an 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, and the computer program is executed by the at least one processor so that the at least one processor can execute the above-mentioned substation load testing method.

[0015] The technical solution of the embodiment of the present invention is to set up a primary system construction module, a multi-source analog quantity acquisition module and a calculation and verification module. The primary system construction module is used to obtain the connection relationship of the primary equipment in the substation to be tested, and the multi-source analog quantity acquisition module is used to obtain the analog quantity data of the corresponding interval based on multiple data acquisition paths. The calculation and verification module compares the connection relationship with the primary equipment based on the test requirements, determines the interval to be tested and the associated interval to be tested, calculates the internal power of the interval to be tested and the reference power data corresponding to the associated interval to be tested according to the analog quantity data corresponding to the connection logic of the interval to be tested, and verifies the internal power of the interval and the reference power data, which solves the problem of the existing manual method for performing load testing, resulting in a long test process, low measurement data accuracy and high misjudgment rate, and can quickly and accurately evaluate the load test results.

[0016] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

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

[0019] Figure 2 A schematic diagram of the structure of another substation load test system provided in the first embodiment of the present invention;

[0020] Figure 3 A structural schematic diagram of another substation load test system provided in the first embodiment of the present invention;

[0021] Figure 4 A flow chart of a substation load testing method provided in Embodiment 2 of the present invention;

[0022] Figure 5 It is a structural schematic diagram of an electronic device for implementing the substation load testing method according to an embodiment of the present invention. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0024] It should be noted that the terms "including" and "having" and any variations thereof in the specification and claims of the present invention and the above-mentioned drawings are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or apparatus.

[0025] Embodiment 1

[0026] Figure 1 The present invention provides a schematic diagram of a substation load test system according to the first embodiment of the present invention. This embodiment can be applied to the application scenario of using load current to perform load test on a secondary current loop with changes. The secondary current loop refers to the current loop on the secondary side of the substation. The current transformer senses the secondary side current based on a specific transformation ratio, which is used for measurement, protection, metering, etc.

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

[0028] Among them, the primary system construction module 100 is used to obtain the connection relationship of the primary equipment in the substation to be tested. The primary equipment is the equipment that directly produces, transmits and distributes electric energy. Typically, the primary equipment includes but is not limited to: generators, transformers, circuit breakers, disconnectors, busbars, feeders, capacitors and other equipment. In the substation design, the incoming line, the main transformer high voltage, the main transformer low voltage, the main transformer, the low voltage feeder and other parts are combined separately, and each part forms a compartment. For example, the incoming line compartment represents starting from the cable head at the end of the line, and is composed of the line side ground knife, the line side knife switch, the switch side ground knife, the switch, the bus side knife switch, and the bus ground knife. All electrical equipment constitutes the incoming line compartment. The primary equipment connection relationship is used to characterize the connection relationship between different compartments. In this embodiment, the primary equipment connection relationship can be generated by importing the system specification file (System Specification Description, referred to as SCD) in the substation system configuration file (Substation Configuration Description, referred to as SCD) in a format similar to the primary wiring diagram of the substation background 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. Among them, the power analog quantity data includes active power and reactive power. In this embodiment, the data acquisition path includes but is not limited to: a data acquisition path based on the background monitoring system of the substation, a data acquisition path based on an intelligent recorder, a data acquisition path based on a safety automatic device, and a data acquisition path based on a meter. Among them, the intelligent recorder is a device that can be applied to both smart substations and conventional substations, integrating fault recording, network record analysis, secondary system visualization, intelligent operation and maintenance, and remote transmission functions. The safety automatic device includes but is not limited to: load shedding, decoupling and standby incoming line automatic input devices and other equipment. The metering instruments include but are not limited to: watt-hour meters, ammeters, voltmeters, active meters, reactive meters and temperature meters and other equipment. 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, and is used to compare the connection relationship of the primary equipment based on the test requirements, determine the interval to be tested and the associated interval to be tested, calculate the interval internal power (such as the power of different windings) in the interval to be tested and the reference power data corresponding to the associated interval to be tested according to the analog quantity data corresponding to the connection logic of the interval to be tested, and verify the interval internal power and the reference power data. Among them, the test requirement can be an interval that needs to be tested with load. In this embodiment, the test requirement can be set and stored by the operator. In this embodiment, the interval internal power and the reference power data are verified, including: based on the law of conservation of power, the interval internal power collected by different multi-source analog quantity acquisition modules 200 in the same interval is compared and verified vertically, and based on the law of conservation of power, the reference power data between different intervals with a connection logic relationship is compared and verified horizontally.

[0031] Specifically, before the substation load test system of the present application is used, the primary equipment connection relationship in the substation to be tested (such as the primary wiring diagram of the substation to be tested) 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 of the corresponding interval (such as current analog quantity data, voltage analog quantity data, active power and reactive power) 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 with load), the intervals in the test requirements are compared with the intervals in the primary equipment connection relationship to determine the interval to be tested, and the associated interval to be tested that has a connection logic relationship with the interval to be tested; then, the internal power of the interval to be tested (such as the winding power) and the reference power data corresponding to the associated interval to be tested are calculated according to the analog quantity data corresponding to the connection logic of the interval to be tested, and the internal power of the interval and the reference power data are verified. If the internal powers of the intervals collected by different multi-source analog quantity acquisition modules 200 in the same interval are not equal, or the benchmark power data between different intervals with a logical connection relationship do not satisfy the power balance, the load test is judged to have failed; if the internal powers of the intervals collected by different multi-source analog quantity acquisition modules 200 in the same interval are equal, and the benchmark power data between different intervals with a logical connection relationship satisfy the power balance, the load test is judged to have passed.

[0032] Therefore, the technical solution of the embodiment of the present invention obtains and compares multi-source analog data through different data acquisition paths, thereby solving the problem of the existing manual method of performing load testing, which results in a long testing process, low measurement data accuracy, and high error rate, and can quickly and accurately evaluate the load test results.

[0033] Figure 2A schematic diagram of another substation load test system provided in the first embodiment of the present invention. Figure 1 Based on the embodiment shown, a specific implementation of a multi-source analog quantity acquisition module is shown. 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 quantity of the multi-source analog quantity acquisition module 200 can be expanded or reduced according to actual conditions.

[0034] Optionally, the background telemetry data acquisition module 201 is connected to the background monitoring system 401 of the substation to be tested, so as to obtain the analog data collected by the measurement and control device pushed by the background monitoring system 401; and / or, the fault recording device analog quantity acquisition module 202 and the protection device analog quantity acquisition module 203 are respectively connected to the intelligent recorder 402 in the substation to be tested, so as to obtain the analog quantity data collected by the protection device and the fault recording device pushed by the intelligent recorder 402; and / or, the safety automatic device analog quantity acquisition module 204 is connected to the safety master station 403 of the substation to be tested, so as to obtain the analog quantity data collected by the safety automatic device pushed by the safety master station 403; and / or, the metering analog quantity acquisition module 205 is connected to the metering center master station 404 of the substation to be tested, so as to obtain the analog quantity data collected by the metering instrument (such as the 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 intervals of the substation to be tested, wherein the primary equipment in the station includes at least: a main transformer, capacitors and a station transformer.

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

[0037] Exemplarily, taking the substation to be tested as a substation with a voltage level of 110KV, the primary equipment of the substation to be tested includes two 110kV incoming lines, one main transformer (#1 main transformer), two 10kV feeders, two 10kV capacitors, and one 10kV station transformer as an example, first, according to the situation of the primary equipment, the primary equipment connection relationship of the substation is constructed in the substation primary system construction module of the system. For example, the 110kV voltage level part includes three intervals, including two 110kV incoming line intervals and #1 main transformer high interval; the 10kV voltage level part includes six intervals, including two 10kV feeder intervals, two 10kV capacitor intervals, one 10kV station transformer interval, and #1 main transformer low interval; the main transformer part is the #1 main transformer part, which includes two corresponding intervals, including #1 main transformer high interval and #1 main transformer low interval. Taking the #1 main transformer high-voltage interval as an example, the #1 main transformer high-voltage interval can be divided into #1 main transformer protection A set winding, #1 main transformer protection B set winding, measurement winding, fault recording winding, metering winding, etc. according to the different uses of each winding 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 device, #1 main transformer protection B set and the #1 main transformer high-voltage interval of the intelligent recorder 402 through the push data of the intelligent recorder 402, and calculates the active and reactive power corresponding to the #1 main transformer protection A set, #1 main transformer protection B set and the #1 main transformer high-voltage interval of the intelligent recorder 402 through this part of information. The calculation and verification module 300 also obtains the active and reactive power (i.e., the measurement winding) of the #1 main transformer high-voltage measurement and control device through the push 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 of the metering center main station 404. Therefore, by connecting to different multi-source analog quantity acquisition modules, the active and reactive power data of different windings of the current transformer in the same interval are automatically calculated within the #1 main transformer high-voltage interval, providing a data basis for vertical and horizontal comparison and verification, with rich data sources and high calculation accuracy.

[0038] Optionally, the calculation verification module 300 is configured to verify the power inside the interval based on the power equality corresponding to different windings in the same interval; wherein the power equality includes reactive power equality and active power equality. Optionally, the calculation verification module 300 is further configured to verify the reference power data corresponding to the associated interval to be measured based on the power conservation between adjacent intervals; wherein the power conservation includes reactive power conservation and active power conservation.

[0039] Exemplarily, the substation to be tested is a substation with a voltage level of 110KV. The primary equipment of the substation to be tested includes two 110kV incoming lines, one main transformer (#1 main transformer), two 10kV feeders, two 10kV capacitors, and one 10kV station transformer. If it is necessary to perform a load test on the #1 main transformer high-voltage interval, first, the calculation and verification module 300 uses the power balance calculation module to perform a longitudinal comparison and verification on the active and reactive power data of each winding of the current transformer of the #1 main transformer high-voltage interval. Since the primary currents of each winding in the same interval are equal, the active and reactive power data of each winding in the same interval should be equal. After the longitudinal comparison and verification is passed, the calculation and verification module 300 will generate a reference power data of the #1 main transformer high-voltage interval. According to the connection relationship of the primary equipment, it can be analyzed that the associated interval to be tested that stores the connection logic relationship with the #1 main transformer high-voltage interval includes two parts: the 110kV voltage level part and the #1 main transformer part. The calculation and verification module 300 performs horizontal comparison and verification on the #1 main transformer high-voltage interval in the 110kV voltage level part and the #1 main transformer part. Taking the horizontal comparison and verification of the #1 main transformer part as an example, the reference power data of the #1 main transformer low-voltage interval is calculated through the data pushed by the multi-source analog quantity acquisition module 200. The power of the #1 main transformer high-voltage interval and the #1 main transformer low-voltage interval contained in the #1 main transformer part should be balanced, that is, the sum of the reference power values ​​of the two should be 0. Similarly, the horizontal comparison and verification of the 110kV voltage level part is performed (that is, the sum of the reference power values ​​of the #1 main transformer high-voltage interval and the two 110kV incoming line intervals is 0). When the horizontal comparison and verification results of the two parts pass, the system will conclude that the #1 main transformer high-voltage interval has passed the load test.

[0040] Figure 3 This is a structural diagram of another substation load test system provided by the first embodiment of the present invention. Figure 3 As shown, the substation load test system of the present application also includes: an alarm module 500, which is connected to the calculation verification module 300, and is used to display an early warning message to prompt manual intervention when either the internal power of the interval or the benchmark power data fails to be verified; and / or, when both the internal power of the interval and the benchmark power data are verified, it is displayed that the load test is qualified.

[0041] Optionally, the warning module 500 may adopt at least one of the following: an audio-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 in the same interval is not equal to the active power data of other windings, or the reactive power data of any winding in the current transformer in the same interval is not equal to the reactive power data of other windings, the calculation and verification module 300 pushes the warning data to the warning module 500, so that the warning module 500 displays the warning information, prompting manual intervention, so as to facilitate the operator to quickly locate the load test anomaly and improve the maintenance efficiency of the substation.

[0043] Embodiment 2

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

[0045] Figure 4 A flow chart 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 the present application specifically includes the following steps:

[0047] S1: Obtain the connection relationship of the primary equipment in the substation to be tested.

[0048] S2: Acquire analog data of corresponding intervals based on multiple data acquisition paths.

[0049] 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.

[0050] S3: Based on the test requirements and the connection relationship of the primary equipment, determine the interval to be tested and the associated interval to be tested, calculate the internal power of the interval to be tested and the reference power data corresponding to the associated interval to be tested according to the analog data corresponding to the connection logic of the interval to be tested, and verify the internal power of the interval and the reference power data.

[0051] Optionally, analog data of corresponding intervals are acquired based on multiple data acquisition paths, including: connecting with the background monitoring system of the substation to be tested based on the background telemetry data acquisition module, so as to acquire the analog data collected by the measurement and control device pushed by the background monitoring system; and / or connecting with the intelligent recorder in the substation to be tested based on the fault recording device analog quantity acquisition module and the protection device analog quantity acquisition module, so as to acquire the analog data collected by the protection device and the fault recording device pushed by the intelligent recorder; and / or connecting with the safety automatic device analog quantity acquisition module of the substation to be tested, so as to acquire the analog data collected by the safety automatic device pushed by the safety automatic device; and / or connecting with the metering center master station of the substation to be tested based on the metering analog quantity acquisition module, so as to acquire the analog data collected by the metering instrument 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 intervals of the substation to be tested, wherein the primary equipment in the station includes at least: a main transformer, capacitors and a station transformer.

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

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

[0055] Optionally, verifying the internal power and reference power data of the interval also includes: verifying the reference power data corresponding to the associated interval to be measured based on the power conservation between adjacent intervals; wherein the power conservation includes reactive power conservation and active power conservation.

[0056] Optionally, the substation load testing method of the present application also includes: when either the internal power of the interval or the benchmark power data fails to pass the verification, displaying a warning message to prompt manual intervention; and / or, when both the internal power of the interval and the benchmark power data pass the verification, displaying that the load test is qualified.

[0057] Embodiment 3

[0058] Based on the same inventive concept, embodiment three 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 executable by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can execute the above-mentioned substation load testing method.

[0059] Figure 5 A schematic diagram of the structure of an electronic device that can be used to implement the substation load test method of an embodiment 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 processing, cellular phones, smart phones, wearable devices (such as helmets, glasses, watches, etc.) and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present invention described and / or required herein.

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

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

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

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

[0064] Various implementations 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 chips (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various implementations can include: being implemented in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which can be a special purpose or general purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0065] Computer programs for implementing 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, so that when the computer program is executed by the processor, the functions / operations specified in the flow chart and / or block diagram are implemented. The computer program may be executed entirely on the machine, partially on the machine, partially on the machine and partially on a remote machine as a stand-alone software package, or entirely on a remote machine or server.

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

[0067] To provide interaction with a user, the systems and techniques described herein may 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 a pointing device (e.g., a mouse or trackball) through which the user can provide input to the electronic device. Other types of devices may also be used to provide interaction with the user; for example, the feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form (including acoustic input, voice input, or tactile input).

[0068] The systems and techniques described herein may be implemented in a computing system that includes backend components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes frontend components (e.g., a user computer with a graphical user interface or a web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such backend components, middleware components, or frontend components. The components of the system may be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: a local area network (LAN), a wide area network (WAN), a blockchain network, and the Internet.

[0069] A computing system may include a client and a server. The client and the server are generally remote from each other and usually interact through a communication network. The client and server relationship is generated by computer programs running on the corresponding computers and having a client-server relationship with each other. The server may be a cloud server, also known as a cloud computing server or cloud host, which is a host product in the cloud computing service system to solve the defects of difficult management and weak business scalability in traditional physical hosts and VPS services.

[0070] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0071] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A substation load test system, characterized in that: include: A primary system building module is used to obtain the connection relationship of primary equipment in the substation to be tested; A multi-source analog quantity acquisition module, used 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; A calculation and verification module is respectively connected to the primary system construction module and the multi-source analog quantity acquisition module, and is used to compare with the connection relationship of the primary equipment based on the test requirements, determine the interval to be tested and the associated interval to be tested, calculate the interval internal power within the interval to be tested and the reference power data corresponding to the associated interval to be tested according to the analog quantity data corresponding to the connection logic of the interval to be tested, and verify the interval internal power and the reference power data.

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

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

5. The substation load test system according to claim 1, characterized in that: The internal power of the interval is the power data of different windings of the current transformer in the interval to be measured; Wherein, the windings include: protection windings, measurement windings, fault recording windings and metering windings.

6. The substation load test system according to claim 5, characterized in that: The calculation verification module is configured to: verify the internal power of the interval based on the equality of powers corresponding to different windings in the same interval; The power equality includes reactive power equality and active power equality.

7. The substation load test system according to claim 1, characterized in that: The calculation verification module is configured to: verify the reference power data corresponding to the associated interval to be tested based on power conservation between adjacent intervals; The power conservation includes reactive power conservation and active power conservation.

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

9. A method for testing a substation under load, characterized in that: include: Obtain the connection relationship of the primary equipment in the substation to be tested; Acquire analog data of corresponding intervals based on multiple data acquisition paths, wherein 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, a comparison is made with the connection relationship of the primary device to determine the interval to be tested and the associated interval to be tested. 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, and the internal power of the interval and the reference power data are verified.

10. An electronic device, characterized in that: The electronic device comprises: 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, and the computer program is executed by the at least one processor so that the at least one processor can execute the substation load testing method according to claim 9.

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