Safety measure checking method for intelligent substation protection system

Abstract

The invention relates to a safety measure checking method for an intelligent substation protection system, and the method comprises the following steps of (1), obtaining a connection state matrix before safety measure operation according to the protection online monitoring data of an intelligent substation, wherein each element in the connection state matrix represents the connection relation of secondary equipment of the intelligent substation; (2) performing safety measure rehearsal, and acquiring a connected state matrix after safety measure operation on the basis of the connected state matrix before the safety measure operation; (3) acquiring an initial state vector of the secondary equipment of the transformer substation, and acquiring a state vector of the secondary equipment after the safety measure operation according to the initial state vector of the secondary equipment and the connected state matrix after the safety measure operation; and (4) comparing the secondary equipment state vector with the secondary equipment initial state vector after the safety measure operation, if the secondary equipment state vector and the secondary equipment initial state vector are consistent, indicating that the safety measure isolation check passes, otherwise, indicating that the safety measure isolation check does not pass. Compared with the prior art, the safety measure checking can be rapidly and effectively carried out, and the result is accurate and reliable.

Description

technical field [0001] The invention relates to the technical field of operation and maintenance of intelligent substations, in particular to a safety check method for a protection system of an intelligent substation. Background technique [0002] Thanks to the development of information technology, a smart substation (Smart Substation), which is composed of highly integrated and reliable advanced electronic equipment, came into being. It uses efficient network communication technology as the basis for information transmission to realize information collection, protection, Automation of functions such as monitoring, while supporting advanced applications such as intelligent regulation of the power grid, collaborative interaction, and online diagnosis. With the development of the power grid, the intelligence and informatization of the substation as the core node of the power system is the core development direction. At present, the smart substation technology has entered the ...

AI Technical Summary

Problems solved by technology

Due to the unique communication characteristics of smart substations, when smart substations are rebuilt, expanded, and device overhauled, the operation of secondary equipment security measures often consists of GOOSE / SV soft pressure plates, tripping and closing exit hard pressure plates, and inspection hard pressure plates. The operation requirements of various measures are combined, and there are many pressure plates, which are not intuitive, and there is no "obvious electrical disconnection point". Varies, making it difficult to effectively assess the reliability of different forms of security tickets

At present, the smart substation lacks effective secondary safety verification means, which makes it impossible for maintenance personnel to determine the current working condition and isolation status of the current power system when performing maintenance operations, and it is difficult to ensure that various maintenance operations will not adversely affect the power system.

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