水轮发电机低励限制与失磁保护整定配合研究与试验

Research and Practice in Matching Setting of Low Excitation Limit and Loss-of-Excitation Protection for Hydro Generator

本文以溪洛渡电站为例,从理论上分析了水轮发电机低励限制与失磁保护整定值的配合情况,得出低励限制先于失磁保护动作,并通过发电机的进相试验也进一步验证了发电机低励限制先于失磁保护动作。这充分证明了发电机低励限制与失磁保护整定配合的正确性。

Take Xiluodu power station as an example, this paper is analyzed on the matching setting of Low Excitation Limit and Loss -of-Excitation Protection for Hydro Generator in theory. The result is that Low Excitation Limit will act earlier than Loss-of-Excitation Protection for hydro generator by the unit test of leading phase. As result, the setting of Low Excitation Limit and Loss -of-Excitation Protection for hydro generator is correct.