抽水蓄能机组几种特殊发变组保护整定配置原则探讨  

Setting Principle Analysis on Some Particular G-T Protections Adopted by Pumped Storage Units

作　　者：张兵海[1] 王献志[1] 李晓文 张新 任刚 

机构地区：[1]河北省电力研究院,河北省石家庄市050021 [2]张河湾抽水蓄能有限责任公司,河北省石家庄市050041

出　　处：《水电自动化与大坝监测》2010年第1期34-38,共5页HYDROPOWER AUTOMATION AND DAM MONITORING

摘　　要：通过对张河湾抽水蓄能电厂发电机变压器保护整定定值的计算,对照国内其他省网抽水蓄能机组的发变组保护整定情况,发现许多具有共性的问题,提出了对发电机及变压器大差保护用其开环分支短路电流校核选择性的观点,以及对水泵电动机工况低频过电流保护选择基准电流的原则,对发电机开关失灵保护进行了分析,并给出合适的逻辑配置,对励磁变压器系统中存在接地故障的保护盲区进行了分析探讨并提出补救措施。After the recalculation and comparison of G-T relay protection settings and principles adopted by ZHW pumped storage units with the protections used by other domestic pumped storage units, many similar problems are found. The view of checking selectivity of such kind of protection by the short circuit current at its open branch is proposed, and the principles for selecting the base current for the low-frequency over-current protection when the unit is working at the pumping mode is also presented in this paper. The analysis on generator circuit breaker failure protection is made and a suitable configuration philosophy is also given, In addition, researches on the dead area of earthing fault protection used in the excitation transformer system are also carried out and corresponding remediable measures are also given.

关 键 词：抽水蓄能机组 发变组 继电保护 整定 

分 类 号：TV743[水利工程—水利水电工程] TM642.2[电气工程—电力系统及自动化]