核电站棒电源机组发电机励磁调差特性研究

Research on excitation difference modulation characteristics of rod power generator in nuclear power plant

将分析核电站棒电源机组发电机励磁调差装置的接线形式。基于正调差接线方式,针对发电机组不同负荷工况,通过电压相量图研究励磁调差装置的输出电压与电流和接入电阻之间的关系。通过发电机组、测量比较单元、放大单元、触发单元和晶阐管单元形成的闭环回路分析,计算发电机组的自然调差系数和附加调差系数。在满足发电机组静态性能和动态性能的前提下,通过调整附加调差系数可以使两套发电机组的总调差系数一致,实现无功均分。

The wiring form of the excitation adjustment device of the rod power generator is analyzed.Based on the positive differential connection mode,the relationship between output voltage,current and access resistance of excitation difference modulation device is studied by voltage phasor diagram under different load conditions of generator.By analyzing the closed-loop loop formed by generator set,measuring and comparing unit,amplifying unit,triggering unit and thyristor unit,the natural adjustment coefficient and additional adjustment coefficient of generator set are calculated.On the premise of satisfying the static and dynamic performance of the generator set,the total adjustment coefficient of the two sets of generator sets can be consistent by adjusting the additional adjustment coefficient,and the reactive power equalization can be achieved.