仙人岩水电站发电机励磁系统的技术改造

Technology Reconstruction of Excitation System of Xianrenyan Hydropower Station

针对仙人岩水电站的双绕组电抗分流励磁装置技术水平低、故障率高、并网运行不稳定等问题,选择静止式可控硅半控桥自并激励磁系统进行了技术改造。实际运行结果表明,改造后励磁系统的电压调节范围大,当电网电压波动时发电机的无功功率变化小,在每一区间均能稳定运行。

Aiming at the problems of low technical level,high failure rate,instable grid operation and the like of double winding reactance shunt excitation device in Xianrenyan Hydropower Station.Static thyristor half-controlled bridge self-grid excitation system is adopted for technical reconstruction.The practical operation result shows that after reconstruction,the voltage adjustment range of the excitation system is large,when the grid voltage is fluctuated,the generator reactive power has small change,and it can stably operate in each interval.