Monitoring system for on/off state of flexible pressing plate for intelligent substation relay protection

Abstract

The invention, which belongs to the technical field of flexible pressing plate monitoring for intelligent substation relay protection, provides a monitoring system for an on / off state of a flexible pressing plate for intelligent substation relay protection, so that the misoperation on the flexible pressing plate during the repairing and debugging process can be prevented effectively. According to the technical scheme, the system comprises a plurality of flexible pressing plates for carrying out on / off operations on protection units connected with the flexible pressing plates correspondingly, a secondary security measure management and control device, a flexible pressing plate state checking module, and a reset operation module. The secondary security measure management and control device is used for setting an operation sequence and an operation instruction of each flexible pressing plate in different repairing flows and locking the execution state of each flexible pressing plate after operation instruction completion; the flexible pressing plate state checking module is used for checking a practical on / off state of each flexible pressing plate and the execution state of each flexible pressing plate locked by the secondary security measure management and control device; and the reset operation module is used for resetting the state of each flexible pressing plate to the locked state by the secondary security measure management and control device when checking results by the flexible pressing plate state checking module are not consistent.

Description

technical field [0001] The invention belongs to the technical field of monitoring soft pressure plates for relay protection of intelligent substations. Background technique [0002] In a substation, it includes primary equipment and secondary equipment, among which the pressure plate is the main item of secondary equipment operation, representing a certain function input and withdrawal; the pressure plate is divided into hard pressure plate and soft pressure plate, the hard pressure plate exists in physical form, and the soft pressure plate is On this basis, software logic is used to strengthen the control of function switching and exit signals, and the relationship with the hard pressure plate is "AND". [0003] In the existing relay protection device of intelligent substation, only two hard pressure plates of "overhaul" and "remote operation" are set, and the rest are all soft pressure plates, such as: function soft pressure plate, SV receiving soft pressure plate, GOOSE r...

AI Technical Summary

Problems solved by technology

[0004] When it is necessary to perform work such as verification and elimination of relay protection, it is usually necessary to take secondary safety isolation measures. Since there are no effective technical measures to prevent the commissioning personnel from mistakenly inserting the soft pressure plate, the withdrawn soft pressure plate cannot be reliably and effectively control, leading to a great risk of misoperation of secondary equipment and misoperation of related primary equipment during the commissioning process, which will bring harm to the safe operation of the power grid

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