200 MW发电机组有功功率波动的原因分析

通过一起200 MW发电机组有功功率波动引起的不安全事件,依据数据波形,从无功功率、电网频率、调节级压力、励磁调节系统、一次调频等因素对发电机组有功功率的影响分析入手,得出了引起发电机组有功功率波动的影响因素。并通过进相运行时有功波动引起的跳机实例,提出了应对防范措施,进一步对单机运行情况做出了合理的运行方式选择和机组负荷指标优化,避免再次发生类似现象。

Cause Analysis of 200 MW Generator Active Power Fluctuations

Through the 200 MW generating unit insecurity incident which caused by the active power fluctuation and according to the waveform,we analyzed the factors that affect generator active power the factors are reactive power,power grid frequency,regulation pressure,excitation-regulating systems and primary frequency regulation,etc.We obtained the factors causing the fluctuations in active power.And by an example of generating unit trip caused by the active power fluctuation when under-excitation operation,we proposed preventive measures,chose the right operating mode and optimized the unit load indicators in one unit operation situation,to prevent the recurrence of similar phe-nomena.