Research of Large Multi-generator Out-of-Step Protection Considering the Safety of Both Source and Grid

ZHEN-XING LI, ZHEN-YU WANG, YU-TING FU, AI-DI WU, LI-LI LI

Abstract


When the system occurs multiple generators out-of-step, we need to put forward a program of large multi-generator out-of-step protection considering the safety of both source and grid. It can avoid the impact of simultaneous tripping of multiple generators on the power grid and play maximally the ability of withstanding the asynchronous oscillation of the generator. According to the area criterion, we could calculate the minimum number of cutting generators in the case of line failure. On this base, the scheme was realized by constructing communication network and special multi-generator out-of-step protection device. It is shows that the number of minimum machines is cut in the case of line failure by simulation, the system can resume synchronization.

Keywords


Safety of both source and grid, Multi-generator out-of-step protection, Equal area criterion, Minimum number of cutting generators


DOI
10.12783/dteees/epee2017/18162

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