抽水蓄能机组发电工况转停机过程中逆功率现象分析与处理

Analysis on reverse power in the process from power generation to shutdown of pumped storage unit and corresponding treatment

通过对蓄能机组发电停机过程中逆功率现象的研究分析,结合现场试验,确定交流采样装置采样延时是导致该问题的主要原因,结合电站进行的技术改造,提出解决方案,从根本上消除机组停机解列后短时逆功率现象。

Through research and analysis on reverse power in the process from power generation to shutdown of pumped storage unit, as well as field test, the reverse power is mainly arisen from sampling delay of AC sampling device. Through technical modification of power station, a solution is proposed, to radically eliminate short-time reverse power after unit shutdown and splitting.