三峡电站发电机内部故障计算及保护灵敏度分析  

Fault Calculation and Protection Sensitivity Analysis Inside Generator of the Three Gorges Power Station

作　　者：桂林[1] 王祥珩[1] 王维俭[1] 

机构地区：[1]清华大学电机工程与应用电子技术系,北京100084

出　　处：《电力设备》2000年第3期30-36,40,共8页Electrical Equipment

摘　　要：采用“多回路分析法”对三峡电站1号发电机在4种运行方式下所有可能发生的同槽和端部交叉故障进行了计算和分析,得到了每一种故障条件下的各支路(包括短路附加支路)电流的大小和相位(稳态基波分量);然后以此为基础计算了各种保护方案的灵敏度,并对各种保护方案的灵敏动作数、可能动作数和不能动作数进行了统计;最后依据计算和统计结果,对各种保护方案的优劣进行了分析,为将来三峡电站机组保护方案的确立打下了基础。Based on the multi-loop analysis method, a large numbers of internal faults of No.1 generator in the Three Gorges Power Station are calculated and analyzed. The value and phase of each branch current (including the additional branch)are obtained under every internal fault. The sensitivity and number of operation of all kinds of protection schemes are calculated. According to these results, the advantages and disadvantages of different protection schemes are analyzed. All those works will provide basis for the decision of protection schemes of generators of Three Gorges Power Station in the future.

关 键 词：多回路分析法 发电机 内部故障 灵敏度 计算分析 

分 类 号：TM31[电气工程—电机] TM722