CN112180295A - Intelligent substation test system - Google Patents
Intelligent substation test system Download PDFInfo
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- CN112180295A CN112180295A CN201910508388.9A CN201910508388A CN112180295A CN 112180295 A CN112180295 A CN 112180295A CN 201910508388 A CN201910508388 A CN 201910508388A CN 112180295 A CN112180295 A CN 112180295A
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Abstract
The invention provides a testing system of an intelligent transformer substation, which comprises: the test management system is used for establishing various transformer substation test models, receiving a user test instruction and calling the corresponding transformer substation test model according to the user test instruction; operating the corresponding transformer substation test model to generate a corresponding test instruction; the signal generating and extracting system is used for outputting the test instruction and receiving a feedback signal; the high-speed optical fiber communication system is used for connecting the signal generating and extracting system and the first signal conversion device; the output end of the first signal conversion device is sequentially connected with the secondary equipment of the transformer substation, the primary simulation equipment of the transformer substation and the input end of the second signal conversion device, and the output end of the second signal conversion device is connected with the high-speed optical fiber communication system to form a test closed loop. The invention can realize systematic testing of the secondary equipment of the transformer substation.
Description
Technical Field
The invention relates to the field of transformer substation testing, in particular to an intelligent transformer substation testing system.
Background
In recent years, the development of construction ideas from digitalization to intelligent substations is fast, secondary automation equipment changes along with the development of the construction ideas, and a plurality of modes are explored for a testing method. According to the design and construction concept of the new generation of intelligent transformer substation of the state network, secondary equipment tends to be in-place, station-regionalized and systematized. The concept of the original single device is gradually replaced by systematization, and the whole stations and even secondary equipment between the stations form a networked structure through optical fiber connection, and the development trends all provide new requirements for the next development of the testing technology. Aiming at the scheduled maintenance, overhaul and debugging work of a single set of equipment, the equipment is developed towards the direction of 'replacement type overhaul', and cross-interval and systematic equipment similar to a 'station area protection device' simultaneously acquires analog quantity and switching quantity information of dozens of or even dozens of intervals, so that the later test work is required to change the emphasis from the single set of equipment to the systematization.
In recent years, the development of construction ideas from digitalization to intelligent substations is fast, secondary automation equipment changes along with the development of the construction ideas, and a plurality of modes are explored for a testing method. According to the design and construction concept of the new generation of intelligent transformer substation of the state network, secondary equipment tends to be in-place, station-regionalized and systematized. The concept of the original single device is gradually replaced by systematization, and the whole stations and even secondary equipment between the stations form a networked structure through optical fiber connection, and the development trends all provide new requirements for the next development of the testing technology. Aiming at the scheduled maintenance, overhaul and debugging work of a single set of equipment, the equipment is developed towards the direction of 'replacement type overhaul', and cross-interval and systematic equipment similar to a 'station area protection device' simultaneously acquires analog quantity and switching quantity information of dozens of or even dozens of intervals, so that the later test work is required to change the emphasis from the single set of equipment to the systematization.
Disclosure of Invention
An object of an exemplary embodiment of the present invention is to provide an intelligent substation test system, so as to implement systematic testing on secondary devices of a substation.
According to an aspect of an exemplary embodiment of the present invention, there is provided an intelligent substation testing system, including:
the test management system is used for establishing various transformer substation test models, receiving a user test instruction and calling the corresponding transformer substation test model according to the user test instruction; operating the corresponding transformer substation test model to generate a corresponding test instruction;
the signal generating and extracting system is used for outputting the test instruction and receiving a feedback signal;
the high-speed optical fiber communication system is used for connecting the signal generating and extracting system and the first signal conversion device;
the output end of the first signal conversion device is sequentially connected with the secondary equipment of the transformer substation, the primary simulation equipment of the transformer substation and the input end of the second signal conversion device, and the output end of the second signal conversion device is connected with the high-speed optical fiber communication system to form a test closed loop.
Further, the intelligent substation test system further includes: and the test process control system is respectively connected with the test management system and the signal generation and recovery system and is used for taking charge of the time sequence control of the whole test process and ensuring the synchronism of each path of signals and the real-time performance of transmitting and receiving signals.
Further, the first signal conversion device includes: SMV signal conversion means and analog signal conversion means.
Further, the substation secondary equipment includes: the system comprises conventional station secondary equipment and intelligent secondary equipment, wherein the conventional station secondary equipment is connected with the analog quantity signal conversion device through a power amplifier; the intelligent secondary equipment is connected with the SMV signal conversion device through a merging unit for inputting analog quantity or digital quantity.
Further, the substation primary simulation device comprises: the secondary equipment of the conventional station is connected with the input end of the second signal conversion device through the analog circuit breaker; and the intelligent secondary equipment is connected with the other second signal conversion device through an intelligent analog circuit breaker.
Further, the second signal conversion device is a switching value signal conversion device, and the other second signal conversion device is a GOOSE signal conversion device.
Furthermore, the intelligent secondary equipment is connected with the GOOSE signal conversion device sequentially through an intelligent terminal and an intelligent analog circuit breaker.
Further, the various transformer substation test models comprise a line fault model, a bus fault model, a main transformer fault model and a transformer fault model.
The intelligent substation testing system provided by the exemplary embodiment of the invention is used for establishing various substation testing models through the testing management system, calling the corresponding substation testing models according to user testing instructions and generating corresponding testing instructions; and the test instruction is output to the secondary equipment of the transformer substation and the primary simulation equipment of the transformer substation through the signal generating and extracting system, the high-speed optical fiber communication system and the first signal conversion device in sequence, and then a feedback signal of the test is transmitted back by the second signal conversion device through the high-speed optical fiber communication system to form a test closed loop, so that various fault tests can be performed on the secondary equipment of the transformer substation based on various transformer substation test models, and the systematic test is realized.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention. In the drawings, like reference numerals are used to indicate like elements. The drawings in the following description are directed to some, but not all embodiments of the invention. For a person skilled in the art, other figures can be derived from these figures without inventive effort.
Fig. 1 exemplarily shows a structural block diagram of an intelligent substation test system provided by the present invention.
Fig. 2 is a schematic diagram schematically illustrating a test management system in an intelligent substation test system according to an embodiment of the present invention with respect to an intelligent substation test channel setting interface;
FIG. 3 is a schematic diagram illustrating an interface of a test management system for setting intelligent test configuration in an intelligent substation test system according to the present invention;
fig. 4 exemplarily shows another schematic diagram of a test management system in an intelligent substation test system with respect to an intelligent substation test configuration interface provided by the present invention;
FIG. 5 is a schematic diagram of a test management system in an intelligent substation test system according to an exemplary embodiment of the present invention, the schematic diagram being related to selection of a power system model interface
Fig. 6 is a schematic diagram schematically illustrating a test management system in an intelligent substation test system according to the present invention with respect to a conventional station current channel setting;
fig. 7 is a schematic diagram schematically illustrating a test management system in an intelligent substation test system according to the present invention with respect to a conventional station voltage channel setting;
8 a-8 d are schematic diagrams illustrating various substation test models in an intelligent substation test system provided by the present invention;
fig. 9 exemplarily shows a schematic diagram of an operating architecture of an intelligent substation testing system provided by the invention.
Detailed Description
The exemplary embodiments of the present invention will now be described with reference to the accompanying drawings, however, the present invention may be embodied in many different forms and is not limited to the embodiments described herein, which are provided for complete and complete disclosure of the present invention and to fully convey the scope of the present invention to those skilled in the art. The terminology used in the exemplary embodiments illustrated in the accompanying drawings is not intended to be limiting of the invention. In the drawings, the same units/elements are denoted by the same reference numerals.
Unless otherwise defined, terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Further, it will be understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense.
As shown in fig. 1, an intelligent substation testing system includes:
the test management system is used for establishing various transformer substation test models, receiving a user test instruction and calling the corresponding transformer substation test model according to the user test instruction; operating the corresponding transformer substation test model to generate a corresponding test instruction;
the signal generating and extracting system is used for outputting the test instruction and receiving a feedback signal;
the high-speed optical fiber communication system is used for connecting the signal generating and extracting system and the first signal conversion device;
the output end of the first signal conversion device is sequentially connected with the secondary equipment of the transformer substation, the primary simulation equipment of the transformer substation and the input end of the second signal conversion device, and the output end of the second signal conversion device is connected with the high-speed optical fiber communication system to form a test closed loop.
Preferably, the intelligent substation testing system further includes: and the test process control system is respectively connected with the test management system and the signal generation and recovery system and is used for taking charge of the time sequence control of the whole test process and ensuring the synchronism of each path of signals and the real-time performance of transmitting and receiving signals.
In a specific operation, the first signal conversion device includes: SMV signal conversion means and analog signal conversion means; the substation secondary equipment comprises: a conventional station secondary device connected to the analog signal conversion device through a power amplifier (high-integration ac power amplifier); the intelligent secondary equipment is connected with the SMV signal conversion device through a merging unit for inputting analog quantity or digital quantity.
The substation primary simulation device comprises: the secondary equipment of the conventional station is connected with the input end of the second signal conversion device through the analog circuit breaker; and the intelligent secondary equipment is connected with the other second signal conversion device through an intelligent analog circuit breaker. The second signal conversion device is a switching value signal conversion device, and the other second signal conversion device is a GOOSE signal conversion device.
During specific operation, the intelligent secondary equipment can be connected with the GOOSE signal conversion device through the intelligent terminal and the intelligent analog circuit breaker in sequence.
In specific operation, the test management system, the test process control system, and the signal generation and recovery system may be integrated into a digital dynamic real-time simulation main controller of the power system, i.e., a simulation host shown in fig. 9, and various first signal conversion devices and second signal conversion devices are packaged into an integrated conversion interface device.
The working process of the test system is briefly described as follows: taking a conventional station secondary device as an example, a power system digital dynamic real-time simulation main controller receives a test instruction of a user, selects a to-be-tested substation test model from preset test models according to the test instruction, operates the substation test model to generate a test signal, the test signal is sequentially transmitted to a substation field secondary device (background monitoring, namely the conventional station secondary device) and a primary device (analog circuit breaker) through a conversion interface device, an optical fiber channel and a power amplifier, and a feedback signal generated after the substation field secondary device (background monitoring, namely the conventional station secondary device) and the primary device are tested is sequentially transmitted to the power system digital dynamic real-time simulation main controller through the optical fiber channel and the conversion interface device, so that closed-loop testing is realized.
Taking an intelligent secondary equipment test as an example: the test signal sent by the power system digital dynamic real-time simulation main controller is transmitted to a merging unit (such as a 12-way channel) through analog quantity or digital quantity input through a conversion interface device (such as a digital quantity signal) to form a closed loop with the intelligent station secondary equipment, the intelligent terminal, the intelligent analog circuit breaker, the GOOSE signal conversion device and the power system digital dynamic real-time simulation main controller through optical fibers.
As shown in fig. 9, the intelligent substation test system shown in fig. 1 may be integrated and configured to have a structure of a test host and a test terminal, where the test host is the above-mentioned digital dynamic real-time simulation main controller of the power system, and may be disposed in a main control room, and the test terminal, i.e., a conversion interface device (i.e., a signal generating device), is disposed on the spot (close to a device to be tested, such as a conventional station secondary device and an intelligent secondary device). The dispersion of the test host and the test terminal equipment has the following technical effects.
1. The test host is placed in the protection central control room;
2. each distributed test terminal can be respectively arranged near the site interval according to the site condition and arranged on site;
3. the optical fiber channels between the test host and each distributed test terminal can utilize on-site spare optical fiber channel facilities, and the workload of wiring is reduced.
As shown in fig. 2 to fig. 7, various function settings can be made on the test host, and interfaces of the various function settings can be referred to in the drawings. As shown in fig. 8a to 8d, the various substation test models preset by the test host include a line fault model, a bus fault model, a main transformer fault model, and a transformer fault model. During specific operation, system tests can be carried out on multiple performances in the transformer substation, and various tests such as line protection, main transformer protection, metallic faults inside and outside a zone, faults with transition resistance, convertibility faults, faults in oscillation and the like are carried out; meanwhile, the reaction condition of the protection device is simulated when the merging unit fails (channel failure); and simulating states of line no-charge overvoltage, main transformer excitation inrush current and the like in the starting grid-connected process of the 500kV system. Therefore, the secondary equipment (protection device) in the transformer substation is completely and fully tested.
In this embodiment:
the test management system comprises: and independently customizing a mathematical model and a test scheme of the transformer substation by taking the transformer substation as a unit, formulating a one-key test sequence list according to the test requirements of a user, and recording the test result.
Testing a process control system: the system is responsible for the time sequence control of the whole test process and ensures the synchronism of multi-path signals and the real-time performance of transmitting and receiving signals. The requirements of action logic and fault recording of the protection device are met.
Signal generation and recovery system: and outputting static or dynamic test signals according to the requirements of the test management system, and recovering the protection or the modulus return signals.
And the closed-loop transmission test of the whole station system ensures the safe and reliable operation of the system. The system has a dynamic test function, can be used for integrally testing the whole set of substation secondary equipment of each voltage class, and is particularly suitable for system testing of newly-built intelligent substation total-station secondary systems. The project is that on the basis of a laboratory moving die, a field moving die test platform is built, primary and secondary equipment and systematic tests of the transformer substation are completed, correct reactions can be made according to various working conditions and fault states possibly encountered during field operation, and the method has important significance in the aspect of transformer substation construction and operation. The functions and the performances of the protection and control device operated in the power system are examined by simulating various operating conditions and fault states of an actual power system on a real-time digital simulation device or an actual equivalent system so as to ensure the test of reliable operation of the protection and control device on the spot. The moving die test is concerned with investigating whether the whole set of protection and control device can accurately react to various operation conditions and fault states which may be encountered during field operation. The method is applied to system transmission of the intelligent substation, joint debugging of primary equipment and secondary equipment, equipment system testing of various manufacturers and background protection measurement and control.
The test system of the embodiment can adopt a distributed mode to carry out automatic closed-loop test on the protection devices in the conventional and intelligent stations. The dynamic mode can carry out primary system digital modeling on the transformer substation, accurately simulate various transient phenomena generated when a fault occurs in an actual system, such as fault phenomena outside a protection area, transformer air-drop, transformer saturation and the like, and is an indispensable important technical means for substation testing. The test system adopts a closed loop mode, can output and receive signals meeting the IEC61850 protocol requirement of the standard, including common IEC61850-9-2 and GOOSE signals, automatically completes the protocol test in the test process, and records all experimental processes so as to generate a complete test report.
The invention has been described with reference to a few embodiments. However, other embodiments of the invention than the one disclosed above are equally possible within the scope of the invention, as would be apparent to a person skilled in the art from the appended patent claims.
Generally, all terms used in the claims are to be interpreted according to their ordinary meaning in the technical field, unless explicitly defined otherwise herein. All references to "a/an/the [ device, component, etc ]" are to be interpreted openly as referring to at least one instance of said device, component, etc., unless explicitly stated otherwise. The steps of any method disclosed herein do not have to be performed in the exact order disclosed, unless explicitly stated.
Claims (8)
1. An intelligent substation test system, comprising:
the test management system is used for establishing various transformer substation test models, receiving a user test instruction and calling the corresponding transformer substation test model according to the user test instruction; operating the corresponding transformer substation test model to generate a corresponding test instruction;
the signal generating and extracting system is used for outputting the test instruction and receiving a feedback signal;
the high-speed optical fiber communication system is used for connecting the signal generating and extracting system and the first signal conversion device;
the output end of the first signal conversion device is sequentially connected with the secondary equipment of the transformer substation, the primary simulation equipment of the transformer substation and the input end of the second signal conversion device, and the output end of the second signal conversion device is connected with the high-speed optical fiber communication system to form a test closed loop.
2. The intelligent substation testing system of claim 1, further comprising: and the test process control system is respectively connected with the test management system and the signal generation and recovery system and is used for taking charge of the time sequence control of the whole test process and ensuring the synchronism of each path of signals and the real-time performance of transmitting and receiving signals.
3. The intelligent substation testing system of claim 2, wherein the first signal conversion device comprises: SMV signal conversion means and analog signal conversion means.
4. The intelligent substation test system of claim 3, wherein the substation secondary equipment comprises: the system comprises conventional station secondary equipment and intelligent secondary equipment, wherein the conventional station secondary equipment is connected with the analog quantity signal conversion device through a power amplifier; the intelligent secondary equipment is connected with the SMV signal conversion device through a merging unit for inputting analog quantity or digital quantity.
5. The intelligent substation testing system of claim 4, wherein the substation primary simulation device comprises: the secondary equipment of the conventional station is connected with the input end of the second signal conversion device through the analog circuit breaker; and the intelligent secondary equipment is connected with the other second signal conversion device through an intelligent analog circuit breaker.
6. The intelligent substation testing system of claim 5, wherein the second signal conversion device is a switching value signal conversion device, and the other second signal conversion device is a GOOSE signal conversion device.
7. The intelligent substation testing system of claim 6, wherein the intelligent secondary equipment is connected to the GOOSE signal conversion device sequentially through an intelligent terminal and an intelligent analog circuit breaker.
8. The intelligent substation testing system of claim 7, wherein the various substation test models include a line fault model, a bus fault model, a main transformer fault model, and a transformer fault model.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114089120A (en) * | 2021-11-25 | 2022-02-25 | 国网陕西省电力公司西咸新区供电公司 | Intelligent substation secondary voltage loop fault diagnosis positioning device and method |
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| CN205898927U (en) * | 2016-08-04 | 2017-01-18 | 云南电网有限责任公司电力科学研究院 | Digit protection criterion ization testing arrangement |
| CN109190305A (en) * | 2018-10-19 | 2019-01-11 | 国网四川省电力公司电力科学研究院 | Panorama real-time emulation method for electric system |
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- 2019-06-12 CN CN201910508388.9A patent/CN112180295A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205898927U (en) * | 2016-08-04 | 2017-01-18 | 云南电网有限责任公司电力科学研究院 | Digit protection criterion ization testing arrangement |
| CN109190305A (en) * | 2018-10-19 | 2019-01-11 | 国网四川省电力公司电力科学研究院 | Panorama real-time emulation method for electric system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114089120A (en) * | 2021-11-25 | 2022-02-25 | 国网陕西省电力公司西咸新区供电公司 | Intelligent substation secondary voltage loop fault diagnosis positioning device and method |
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Application publication date: 20210105 |