Multilevel spare power automatic switching system, priority cooperation method, and construction method

Abstract

The invention discloses a multilevel spare power automatic switching system, which is suitable for a regional power grid adopting one or a plurality of 220kV transformer station / s as power supply and a plurality of 110kV transformer stations. The multilevel spare power automatic switching system is constituted by a plurality of substation area spare power automatic switching devices and a regional spare power automatic switching device. The substation area spare power automatic switching devices are disposed on the transformer stations in the regional power grid, and are provided with the spare power automatic switching functions of various voltage levels of the transformer stations. The regional spare power automatic switching device is disposed on any transformer station in the regional power grid, and can be used to acquire the information of the transformer stations from the substation area spare power automatic switching devices via the real-time communication network, and the regional spare power automatic switching function can be realized. The multilevel spare power automatic switching system comprises 220kV power supply transformation spare power automatic switching devices, a regional spare power automatic switching, 110 kV transformer station high voltage side spare power automatic switching devices, and 110kV transformer station middle-lower voltage side spare power automatic switching devices, which are provided with the multilevel spare power automatic switching function having the differentiated priorities. The invention also discloses a method for realizing priority cooperation of the multilevel spare power automatic switching devices by the logical command.

Description

technical field [0001] The invention relates to an automatic switching system and method for power transmission and distribution in a power system, in particular to a backup power automatic switching system, a priority coordination method and a construction method. Background technique [0002] In recent years, backup power self-switching technology has been widely used in 220kV and below power grids, and has played an important role in maintaining grid stability and improving power supply reliability. [0003] Traditional standby automatic switching devices are generally configured according to voltage levels. In a substation, multiple sets of standby automatic switching devices will be configured according to different voltage levels. Generally, there is no exchange of information between the standby automatic switching devices. The automatic switch has a priority coordination relationship. The standby automatic switch on the high-voltage side has priority over the standby...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a multi-level backup and automatic switching system, which can solve the problems of multiple sets of backup and automatic switching in substations, in view of the problems in the priority coordination of traditional backup and automatic switching in regional power grids and the difficulties in increasing regional backup and automatic switching. The priority coordination problem, and can conveniently realize the function of regional backup self-switching, and can solve the priority coordination problem of multiple sets of backup self-switching with different voltage levels and different purposes in the regional power grid

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