Automatic detection method and device for local line protection device based on automatic case construction

Abstract

The invention discloses an automatic detection method and device for a local line protection device based on automatic case construction. The automatic detection method comprises the following steps:acquiring a total station system configuration file of a tested local line protection device; carrying out physical wiring on the tested local line protection device and a test device to build an automatic detection system; automatically constructing a test case of the local line protection device according to the total station system configuration file; and completing automatic detection of the local line protection device by adopting a closed-loop mode through the test case. According to the method, automatic construction of a test case model of the local line protection device can be realized on the analysis of the total station system configuration file, and one-key automatic overhaul test of the local line protection is completed in a closed-loop mode, so that the automatic detectionefficiency is improved, and the limitation that an automatic test tool cannot be widely applied to a newly-built intelligent substation is broken through.

Description

Technical field [0001] The present invention relates to equipment testing technology for intelligent substations, in particular to an automatic detection method and device for in-situ line protection devices based on use cases automatically constructed. Background technique [0002] Since the State Grid Corporation of China launched the pilot construction of smart substations in 2009, up to now, more than 5,000 smart substations have been built in China, including the first-generation smart substations and the second-generation smart stations. Due to a high degree of system integration and reasonable structural layout, smart substations have achieved certain results in terms of economy, energy conservation and environmental protection. However, many problems have been exposed in actual application. Especially in the operation and maintenance of smart substations, heavy maintenance workload and high maintenance costs greatly restrict the development of smart substations. In orde...

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Problems solved by technology

[0003] According to the relevant standards and specifications for the construction of smart substations, digital SV messages are used for local line protection of 110kV and below voltage levels, and the sampling data of local line protection for voltage levels of 220kV and above are analog signals. , there are the following problems: ① There is no liquid crystal display structure in the on-site line protection device, the digital relay protection tester + the analog relay protection tester + the manual detection mode of the management machine are used for the maintenance and debugging of related functions, and there are many types of test equipment and tools , the operation is cumbersome, and the degree of automation is low; ② At present, there are related in-situ line protection automatic test instruments on the market, but its application mainly depends on the configuration of the test template. It takes a long time to configure the template for the first test, and the universality of the template Poor performance and limited application and promotion; ③ In terms of joint commissioning of newly built on-site smart substations, different substations have different line planning and design, and the corresponding line protection configurations are not the same. The current automatic test tools cannot The configuration file (SCD) file flexibly and automatically generates test cases for related line protection, which cannot be widely used in the joint commissioning of new on-site smart substations

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