Graphical comparing method for SCD (substation configuration description) files of intelligent substation

Abstract

The invention relates to a graphical comparing method for SCD (substation configuration description) files of an intelligent substation. According to the graphical comparing method, a graphical model comparison mode is adopted, and graphs are adopted to indicate comparison results. The graphical comparing method specifically includes the steps of importing two to-be-compared SCD files for analysis so as to generate a new graphical comparison SCD file which is divided into an IED (Intelligent electronic device) layer, an associated graph layer, a virtual terminal graph layer and a virtual terminal surface layer; comparing the original SCD file with the new SCD file according to a data model and a communication service model of the IEC (international electro technical commission) 61850 standard, and marking the comparison results in different layers of the SCD file in graphs. Compared with a frequently-used SCD file text comparison method, the graphical comparing method for the SCD files has the advantages of simple operation, clear comparison results, high comparing efficiency, high visualization degree and the like, and a user can get free of dependence on XML (extensive markup language) grammatical rules and IEC61850 model knowledge.

Description

technical field [0001] The invention relates to the fields of operation, maintenance, debugging, management and equipment development of intelligent substations, and in particular to a graphical comparison method for SCD files of intelligent substations. Background technique [0002] In the secondary system design stage of the smart substation, the secondary equipment manufacturer is required to provide the IED capability self-description file, that is, the ICD file. This document describes the basic data model and services provided by the IED, but does not include the IED instance name and communication parameters. ; The Design Institute designs the SSD file, which is a system specification description file, including the system structure and main wiring information of the entire substation. Based on the ICD file and SSD file, the design institute connects to generate the virtual terminal table or virtual secondary circuit diagram of the substation; the system integrator us...

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Problems solved by technology

[0004] (1) During the factory joint debugging and on-site debugging stage, the SCD file changes frequently, often causing the debugging personnel to not know the differences between the SCD files between versions, thus adding a lot of repetitive debugging work

Currently, the text comparison method is generally used for two SCD files. This method has a huge workload, is not intuitive, and has low comparison efficiency. The SCD file of a 500kV smart substation is about 100MB, and nearly 2 million lines are opened with text editing software. Automatic comparison is very difficult, and the result of text comparison is too professional, requiring debuggers to have knowledge of IEC61850 model and XML (Extensible Markup Language) grammar, which is difficult to fully achieve at the debugging site

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