Centralized protection control system based on split layered architecture

Abstract

The invention discloses a centralized protection control system based on a split layered architecture, which is characterized in that the system is composed of a protection control host (PCM), an interval acquisition control module (SCM) and a voltage input module (VIM), takes a special optical fiber as a communication medium, and adopts a special protocol to carry out point-to-point communication interaction. The protection control host (PCM) is highly integrated, and functions of interval protection control, transformer protection, bus protection, station domain protection and spare power automatic switching are realized. Complex secondary wiring of the transformer substation is reduced by adopting split centralized protection, secondary equipment design, manufacturing and maintenance work of an integrated automation system is reduced, and interconnection and interworking configuration-free self-adaption are achieved; all-station data are integrated in a centralized mode, information is shared, cooperation between protection devices is simplified, overall coordination and function optimization of all-station protection control are conveniently achieved, and station domain protection and system protection are effectively supported.

Description

technical field [0001] The invention relates to the technical field of electric power system relay protection, in particular to a substation total protection system scheme of medium and low voltage voltage levels. Background technique [0002] At present, the secondary equipment of the substation mainly adopts a hierarchical and interval-oriented independent configuration scheme. Each bay is independently equipped with devices such as protection, measurement and control, and wave recording. The devices communicate independently with the monitoring equipment at the station control layer. There is no information interaction between each bay. The station domain protection equipment such as backup self-injection and bus protection independently collects information to complete specific functions. . This mode divided by function and interval has repeated hardware configuration, heavy CT and PT loads, complex secondary circuit wiring, no sharing of information, lack of overall co...

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