桥街电站甩负荷出现机组低频的原因及处理措施

Reasons and Treatment Measures for Low Frequency of Units in Qiaojie Power Station during Load Rejection

本文针对桥街电站甩负荷引起机组低频灭磁动作的情况,提出相应的解决方案和措施,并取得较好的结果。首先,根据相关试验数据分析甩负荷时造成机组低频灭磁且停机的原因;其次,提出处理方案及措施;最后,通过修改调速器程序后进行甩负荷试验,验证该处理措施的有效性。

In view of the low-frequency de-excitation action caused by load rejection in Qiaojie Hydropower Station,the corresponding solutions and measures are put forward,and good results are achieved.Firstly,according to the analysis of relevant test data,the causes of low frequency de-excitation and shutdown of the unit during load rejection are analyzed.Secondly,the treatment scheme and measures are put forward.Finally,load rejection test is carried out after modifying the governor program to verify the effectiveness of the treatment measures.