水力发电2012，Vol.38Issue(10)：60-63,4.
二滩水电站低励限制与失磁保护配合关系研究
Research on Matching of Low Excitation Limit and Loss of Excitation Protection in Ertan Hydropower Station
摘要
Abstract
To meet the requirement of low excitation limit being switched before the switching of loss of excitation protection after the recent transformation of protection system of generator-transformer unit in Ertan Hydropower Station, the three switching criteria of loss of excitation protection, including low generator terminal voltage criterion, the stator impedance circle criterion and rotor voltage criterion, are firstly drawn in one P-Q coordinate system with the curve of low excitation limit to verify the switching relationship of loss of excitation protection and low excitation limit. The calculation results show that the setting value of loss of field protection is correct, the switching relationship meets the requirement of specification, and there is a certain stability margin between the loss of excitation protection and low excitation limit.关键词
失磁保护/低励限制/配合关系/映射Key words
loss of excitation protection/ low excitation limit/ matching/ mapping
分类
信息技术与安全科学引用本文复制引用
季杰,黄建琼..二滩水电站低励限制与失磁保护配合关系研究[J].水力发电,2012,38(10):60-63,4.
