CN109031005B - Distributed relay protection device testing method and relay protection tester - Google Patents
Distributed relay protection device testing method and relay protection tester Download PDFInfo
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- CN109031005B CN109031005B CN201811066274.5A CN201811066274A CN109031005B CN 109031005 B CN109031005 B CN 109031005B CN 201811066274 A CN201811066274 A CN 201811066274A CN 109031005 B CN109031005 B CN 109031005B
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- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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Abstract
The invention provides a testing method of a distributed relay protection device and a relay protection tester. The method comprises the following steps: the relay protection tester is connected with a distributed relay protection device to be tested; sending test data to the distributed relay protection device; receiving a message returned by the distributed relay protection device; and verifying the message to finish the test of the distributed relay protection device. The invention adopts a mode of simulation protocol, provides a scheme for testing and regularly checking a single distributed relay protection device, reduces the number of testing devices, reduces the complexity of testing environment, saves the testing and regularly checking cost, directly positions the protection device with problems, and meets the requirements of testing and regularly checking the distributed relay protection device in different life cycles.
Description
Technical Field
The invention relates to the field of power systems, in particular to a distributed relay protection device testing method and a relay protection tester.
Background
At present, a master-slave scheme and a multi-master scheme are mainly used for a distributed relay protection device of a power system.
In the master-slave scheme, the slave is mainly responsible for collecting analog quantity and switching quantity at different intervals and protecting a trip outlet, and the master is responsible for receiving sampling data, performing logic calculation, issuing a trip command and the like of the slave. The master machine and the slave machines are connected in a network mode, and each slave machine has a fixed number or address.
In the multi-main scheme, each distributed relay protection device adopts the same hardware and software and is respectively responsible for collecting analog quantity and switching quantity at different intervals and protecting a tripping outlet. The distributed relay protection devices are connected in a network mode, each protection device sends self information through network communication, information of other devices is obtained at the same time, faults are identified through independent calculation, and a tripping outlet is started.
The current test situation of the distributed relay protection device is as follows: in both master-slave and multi-master schemes, because a single distributed relay protection device does not have a complete protection function, a system built by a plurality of protection devices can only verify the protection function and performance. When the distributed relay protection device is installed on site, the distributed relay protection device is mainly used for protecting main equipment such as a power system transformer and a bus, different intervals are far away from each other, a plurality of common protection testers are required to be simultaneously used for testing and regular inspection, the testing environment is complex, and the cost is high. Defects are found in the testing process, and the problem of which protection device is difficult to quickly locate is solved.
Disclosure of Invention
The embodiment of the invention aims to provide a testing method of a distributed relay protection device and a relay protection tester so as to solve the problems.
The embodiment of the invention provides a testing method of a distributed relay protection device, which comprises the following steps:
the testing device is connected with the distributed relay protection device to be tested;
sending test data to the distributed relay protection device;
receiving a message returned by the distributed relay protection device;
and verifying the message to finish the test of the distributed relay protection device.
Further, the testing device keeps time synchronization with the distributed relay protection device through receiving time synchronization.
Further, the test data comprises an analog quantity, a switching quantity and a communication message.
Further, the sending the test data to the distributed relay protection device includes:
simulating communication protocols between other distributed relay protection devices and the distributed relay protection device to be tested to configure the test data;
and sending the test data to the distributed relay protection device to be tested.
Further, the verifying the message to complete the test of the distributed relay protection device includes:
setting a judgment basis for verifying the message;
and verifying the message based on the judgment basis to finish the test of the distributed relay protection device.
The embodiment of the present invention further provides a distributed relay protection device tester, including:
the communication interface is connected with a distributed relay protection device to be tested, sends test data to the distributed relay protection device and receives a message returned by the distributed relay protection device;
and the verification unit is used for verifying the message so as to finish the test of the distributed relay protection device.
As an optional aspect of the present invention, the distributed relay protection device tester further includes:
and the time synchronization interface keeps time synchronization with the distributed relay protection device by receiving time synchronization.
As an optional aspect of the present invention, the distributed relay protection device tester further includes:
and the configuration module is used for simulating the configuration of communication protocols between other distributed relay protection devices and the distributed relay protection device to be tested, and configuring the test data.
Furthermore, the communication interface supports ring network, dual-network and single-network communication modes.
As an optional aspect of the present invention, the verification unit includes:
the criterion setting module is used for setting a judgment basis for verifying the message;
and the verification module verifies the message based on the judgment basis so as to finish the test of the distributed relay protection device.
According to the technical scheme provided by the embodiment of the invention, a single distributed relay protection device testing and regular inspection scheme is provided by adopting a simulation protocol mode, the number of testing devices is reduced, the complexity of a testing environment is reduced, the testing and regular inspection cost is saved, a problematic protection device is directly positioned, and the requirements of testing and regular inspection of different life cycles of the distributed relay protection device are met.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic flow chart of a testing method of a distributed relay protection device according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of a testing method of a distributed relay protection device according to another embodiment of the present invention;
fig. 3 is a typical connection diagram of a distributed relay protection device according to an embodiment of the present invention;
fig. 4 is a schematic test diagram of a distributed relay protection apparatus according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a system composition of a relay protection tester according to an embodiment of the present invention;
fig. 6 is a schematic system composition diagram of a relay protection tester according to another embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, specific embodiments of the technical solutions of the present invention will be described in more detail and clearly with reference to the accompanying drawings and the embodiments. However, the specific embodiments and examples described below are for illustrative purposes only and are not limiting of the invention. It is intended that the present invention cover only some embodiments of the invention and not all embodiments of the invention, and that other embodiments obtained by various modifications of the invention by those skilled in the art are intended to be within the scope of the invention.
Fig. 1 is a schematic flow chart of a testing method of a distributed relay protection device according to an embodiment of the present invention, where the method includes the following steps.
In step S110, the relay protection tester is connected to the distributed relay protection device to be tested.
Fig. 3 is a typical connection diagram of a distributed relay protection device according to an embodiment of the present invention. As shown in fig. 3, the distributed relay protection device a serves as a device under test, and the distributed relay protection device B, C, D serves as another device related thereto. Each distributed relay protection device has the capacity of collecting analog quantity, switching value and output switching value, and specific input and output are configured according to practical application scenes.
The working process is as follows: the distributed relay protection devices exchange information through a communication network, so that all information collected by distributed relay protection is obtained, and whether a power grid fails or not is judged; and after the fault is judged, exchanging information through a communication network, and executing a tripping command by the related distributed relay protection device.
When the distributed relay protection device is installed on site, the distributed relay protection device is mostly used for protecting main equipment such as a power system transformer and a bus, different intervals are far away from each other, and joint testing and scheduled inspection are inconvenient to perform, so that the embodiment provides a relay protection test of a single distributed relay protection device. The relay protection tester is connected with the distributed relay protection device A to be tested through the communication interface, and tests are carried out on the distributed relay protection device A.
In step S120, the relay protection tester sends test data to the distributed relay protection device.
When the distributed relay protection device is tested, the relay protection tester performs analog quantity output and switching quantity input and output on the distributed relay protection device to be tested, and simultaneously simulates network messages of other related distributed relay protection devices, wherein the relay protection tester keeps time synchronization with the distributed relay protection device to be tested by receiving time synchronization, comprehensively sets analog quantity, switching quantity and communication messages to form test data, and sends the test data to the distributed relay protection device to be tested.
In step S130, a message returned by the distributed relay protection device to be tested is received.
The relay protection tester is communicated with the distributed relay protection device to be tested and receives a message returned by the distributed relay protection device.
In step S140, the returned message is verified to complete the test of the distributed relay protection device.
The relay protection tester pre-judges the execution result of the device to be tested according to the sent test data, and sets a judgment basis for returning the message according to the judgment result. And verifying whether the received message is consistent with the judgment basis, and if so, indicating that the distributed relay protection device to be tested is qualified. Therefore, the purpose of carrying out comprehensive function test on one of the distributed relay protection devices is achieved.
Fig. 3 is a schematic flow chart of a testing method of a distributed relay protection device according to another embodiment of the present invention, where the method includes the following steps.
In step S210, the distributed relay protection device tester is connected to the distributed relay protection device to be tested.
In step S221, test data is configured by simulating communication protocols between other distributed relay protection devices and the distributed relay protection device to be tested.
Fig. 4 is a schematic test diagram of a distributed relay protection device according to an embodiment of the present invention. As shown in fig. 4, when testing the distributed relay protection device a, the relay protection tester performs analog output and switching input/output on the distributed relay protection device a to be tested, and simultaneously, may simulate the test interfaces of a plurality of other distributed protection devices by extending the board or interface, simulate the communication messages of other related distributed relay protection devices B, C, D, comprehensively set the analog, switching and communication messages based on the state sequence to form test data, and perform data transmission and reception with the distributed relay protection device a to be tested. And the relay protection tester keeps time synchronization with the distributed relay protection device A through receiving the time synchronization.
In step S222, the test data is transmitted to the distributed relay protection device.
And the relay protection tester sends test data to the distributed relay protection device A to be tested through the communication interface.
In step S230, a message returned by the to-be-tested distributed relay protection device is received.
In step S241, a judgment basis for verifying the returned message is set.
And the relay protection tester sets the judgment basis of the returned message according to the output test data. For example, if the switching value is output in the test data, the distributed relay protection device a to be tested operates upon receiving the switching value. The returned message should have the status after this action has been performed. This state is set as part of the basis for the judgment. And if the network messages of other distributed relay protection devices are contained in the test data, the content of the response message is also set as a part of the judgment basis. The judgment is set according to actual needs, and is not limited to this.
In step S242, the testing of the distributed relay protection device to be tested is completed based on the returned message of the verification according to the judgment.
And the relay protection tester verifies the returned message according to the judgment basis, if the two messages are in accordance, the verification is passed, and the distributed relay protection device to be tested is qualified.
In this embodiment, steps S210 and S230 are the same as steps S110 and S130, and are not described again.
Fig. 5 is a schematic diagram of a system composition of a relay protection tester according to an embodiment of the present invention, where the tester 1 includes a communication interface 11 and a verification unit 12.
The communication interface 11 is connected to the distributed relay protection device to be tested, sends test data to the distributed relay protection device, and receives a message returned by the distributed relay protection device to be tested. The verification unit 12 verifies the returned message to complete the test of the distributed relay protection device to be tested.
Fig. 6 is a schematic diagram of a system composition of a relay protection tester according to another embodiment of the present invention, where the tester 2 includes a communication interface 21, a verification unit 22, a time synchronization interface 23, and a configuration module 24.
The communication interface 21 is connected to the distributed relay protection device to be tested, sends test data to the distributed relay protection device to be tested, and receives a message returned by the distributed relay protection device to be tested. The time setting interface 23 keeps time synchronization with the distributed relay protection device to be tested by receiving time setting. The configuration module 24 simulates communication protocols between other distributed relay protection devices and the distributed relay protection device to be tested to configure test data. The verification unit 22 verifies the returned message to complete the test of the distributed relay protection device to be tested.
The communication interface 21 supports, but is not limited to, a ring network, a dual network, and a single network communication mode.
The verification unit 22 comprises a criterion setting module 221 and a verification module 222.
The criterion setting module 221 sets a criterion of the verification message. The verification module 222 determines whether the returned message according to the verification is consistent with the judgment basis, if so, it indicates that the distributed relay protection device to be tested is qualified, and if not, it directly locates the protection device with problems to repair the device. Therefore, the purpose of carrying out comprehensive function test on one of the distributed relay protection devices is achieved, and the requirements of carrying out tests and regular inspection on the distributed relay protection devices in different life cycles are met.
It should be noted that the above-mentioned embodiments described with reference to the drawings are only intended to illustrate the present invention and not to limit the scope of the present invention, and it should be understood by those skilled in the art that modifications and equivalent substitutions can be made without departing from the spirit and scope of the present invention. Furthermore, unless the context indicates otherwise, words that appear in the singular include the plural and vice versa. Additionally, all or a portion of any embodiment may be utilized with all or a portion of any other embodiment, unless stated otherwise.
Claims (7)
1. A testing method of a distributed relay protection device comprises the following steps:
the relay protection tester is connected with a distributed relay protection device to be tested;
simulating communication protocol configuration test data between other distributed relay protection devices and the distributed relay protection device to be tested, wherein the test data comprises analog quantity, switching quantity and communication messages;
sending test data to the distributed relay protection device;
receiving a message returned by the distributed relay protection device;
and verifying the message to finish the test of the distributed relay protection device.
2. The method of claim 1, wherein the distributed relay protection device tester maintains time synchronization with the distributed relay protection device by receiving a pair of times.
3. The method of claim 1, wherein the verifying the message to complete testing of the distributed relay protection device comprises:
setting a judgment basis for verifying the message;
and verifying the message based on the judgment basis to finish the test of the distributed relay protection device.
4. A relay protection tester, comprising:
the communication interface is connected with a distributed relay protection device to be tested, sends test data to the distributed relay protection device and receives a message returned by the distributed relay protection device;
the configuration module is used for simulating communication protocols between other distributed relay protection devices and the distributed relay protection device to be tested to configure the test data;
and the verification unit is used for verifying the message so as to finish the test of the distributed relay protection device.
5. The relay protection tester of claim 4, further comprising:
and the time synchronization interface keeps time synchronization with the distributed relay protection device by receiving time synchronization.
6. The relay protection tester of claim 4, wherein the communication interface supports ring network, dual network, single network communication.
7. The relay protection tester of claim 4, wherein the verification unit comprises:
the criterion setting module is used for setting a judgment basis for verifying the message;
and the verification module verifies the message based on the judgment basis so as to finish the test of the distributed relay protection device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811066274.5A CN109031005B (en) | 2018-09-13 | 2018-09-13 | Distributed relay protection device testing method and relay protection tester |
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| CN201811066274.5A CN109031005B (en) | 2018-09-13 | 2018-09-13 | Distributed relay protection device testing method and relay protection tester |
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| CN109031005B true CN109031005B (en) | 2021-08-27 |
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| CN111781437A (en) * | 2020-05-21 | 2020-10-16 | 杭州意能电力技术有限公司 | Relay protection test method and system |
| CN112463592A (en) * | 2020-11-12 | 2021-03-09 | 许继集团有限公司 | Distributed automatic test method and test system for relay protection device |
| CN115754866B (en) * | 2022-11-04 | 2024-03-26 | 国网山东省电力公司电力科学研究院 | Relay protection tester full life cycle monitoring and early warning system and method |
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| CN203350377U (en) * | 2013-07-15 | 2013-12-18 | 四川省电力公司阿坝公司 | Automation relay protection testing device |
| CN107991545A (en) * | 2016-10-26 | 2018-05-04 | 南京南瑞继保电气有限公司 | A kind of periodical inspection method of digital relay protection |
| CN106787215A (en) * | 2017-02-15 | 2017-05-31 | 许昌开普检测技术有限公司 | Intelligent relay protection device information transfer time automatic checkout system and its detection method |
| CN107132442A (en) * | 2017-06-20 | 2017-09-05 | 广州供电局有限公司 | The test device for relay protection of Intelligent transformer station |
| CN108132449A (en) * | 2017-11-15 | 2018-06-08 | 中国电力科学研究院有限公司 | The information standardization automatic check device and method of a kind of relay protection |
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