An automatic test method for relay protection of intelligent substation

Abstract

An automatic test method for relay protection devices in intelligent substations. Testers compile a standard test plan template at the initial stage of system establishment; through the automatic test software on the PC, communication is established with test instruments and protection devices at the same time to realize closed-loop sharing of data; Real-time display and acquisition of relevant data such as measurement volume, input and output, and time during the test; based on the acquired data, based on the decision tree algorithm, automatically identify the test status of the project and obtain the test results of the project. At the same time, the test software replaces manual work to achieve A series of operations such as modifying the fixed value, throwing and withdrawing the pressure plate, and summarizing the test data; generating and filling in the test report, and ending the test. Based on the principle of closed-loop testing, the present invention interconnects automatic testing software, testing instruments and protection devices, and consists of a physical layer, a communication interface layer, a data layer, a logical layer and an application layer to form an automatic testing system, thereby realizing relay protection. automatic testing.

Description

technical field [0001] The invention belongs to the technical field of electric power system relay protection, relates to a test of a relay protection device of an intelligent substation, and more particularly relates to an automatic test method for a relay protection device of an intelligent substation. Background technique [0002] As a key component of the power system, on the one hand, the smart substation is related to the working efficiency of the power grid system, and on the other hand, it also has an important impact on whether people's electricity demand can be met and the development of the power industry. The relay protection device is the secondary core of the smart substation. Its own reliability and stability directly affect the operation efficiency and safety of the power system. It can be widely used in smart substations. At present, the traditional relay protection test mainly based on manual inspection and operation has been difficult to meet the requirem...

AI Technical Summary

Problems solved by technology

At present, the traditional relay protection test mainly based on manual inspection and operation has been difficult to meet the requirements of the overall safe operation of the power grid. Therefore, it is necessary to strengthen the research on the automatic test system of the relay protection device of the smart substation and gradually put it into practical application. has become a key work in the field of electric power

Compared with smart substations, traditional substation relay protection devices have problems such as inconsistent external interfaces, too many communication protocol versions, and fixed value lists, which largely limit the practical application of automatic testing.

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