同步发电机失磁故障的仿真研究

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...

Simulation Study on Fault of Loss of Excitation of Synchronous Generators

On the basis of studying model of synchronous generators and in view of demerits of reactive impedance circle adopted as criterion for static stability state of generators,the paper presents functional relation between excitation voltage of synchronous generators and active power as criterion for static stability state of generators,and it deduces relational expression of the two and brings forward judging method.By comparison among excitation voltage,excitation current and output power by simulation on partial excitation loss state and overall partial excitation loss state of generators in the environment of MATLAB,the paper believes that the approach mentioned can better reflect excitation fault.