Abstract：Through studying the reasons that limit generators’ leading-phase operation, this article discusses the level of itsinfluential factors including the heating of the stator terminals and the generator static-state stability.It is concluded that the heating of the stator terminals has no limitation on the leading-phase operation of large turbine-generators, and determined the principle that only the coordination between the setting calculation of under excitation limiters(UEL) and the loss-of-field protection is necessary.Through analyzing the method of the mapping criteria of UEL and the loss-of-field protection between the RX-plane and the PQ-plane, the principle of their coordinative setting calculation is proposed.Furthermore, this paper develops a circular characteristic UEL and its setting calculation, and advises the settings of the loss-of-field protection.
鲜霄,寻志伟,周道军. 大型汽轮发电机运行与无功控制[J]. 电工技术学报, 2015, 30(5): 98-105.
Xian Xiao,Xun Zhiwei,Zhou Daojun. Operation and Reactive Power Control of Large Turbine-Generators. Transactions of China Electrotechnical Society, 2015, 30(5): 98-105.
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