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以响水涧抽水蓄能电站灭磁系统为例,论述了励磁系统的主回路结构,介绍了机组正常停机和事故停机时灭磁系统动作过程及机械跨接器在灭磁过程中的动作情况,分析了磁场断路器和灭磁电阻的性能,并结合电站工程实际,从安全性和经济性出发,提出了对灭磁系统的改进建议。分析结果表明,基于机械跨接器的移能灭磁系统在各种情况下均能对发电机进行快速、可靠的灭磁。
Taking the damming system of Xiangshuijian Pumped Storage Power Station as an example, the structure of the main circuit of the excitation system is discussed. The operation process of the de-excitation system during the normal shutdown and accident shutdown of the unit and the operation of the mechanical jumper in the de-excitation process are introduced , Analyzed the performance of the magnetic circuit breaker and the demagnetizing resistor, and combined with the actual engineering of the power plant, put forward the improvement suggestion to the demagnetizing system based on the safety and economy. The analysis results show that the MLC system based on mechanical jumper can de-energize the generator quickly and reliably under various conditions.