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Simulation Study on Fault of Loss of Excitation of Synchronous Generators
Author(s): DENG Guo-liang
Pages: 44-
47
Year: 2011
Issue:
11
Journal: Guangdong Electric Power
Keyword: 同步发电机; 励磁系统; 失磁故障; 仿真分析;
Abstract: 在对同步发电机模型研究的基础上,针对常用的无功阻抗圆作为发电机静稳态判据方法的不足,提出采用同步发电机励磁电压与有功功率之间函数关系作为发电机静稳态判据,并推导出二者之间的关系式,给出判断方法.通过在MATLAB环境下对发电机部分失磁和全部失磁状态进行仿真获得的励磁电压、励磁电流、输出功率的波形比较分析,认为所提方法能较好地反映励磁的故障状况.
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