多分支大型水轮发电机内部故障主保护的灵敏度分析

摘要

The new software is proposed to simulate the internal armature-winding fault of large hydro-generator. Based on the calculation data, the sensitivity of several main protections and the design of each detailed protective set are described. All these work has been done to maintain the optimal design of main protection for the internal fault of large hydro-generator.%多分支大型水轮发电机的内部故障计算及灵敏度分析是确定大型发电机保护的理论依据，文中用一种新的内部故障仿真软件对一台大型水轮发电机内部故障进行计算，并在计算结果的基础上，分析了裂相保护、不完全纵差保护、单元件横差保护和传统纵差保护等几种主保护的灵敏度，比较其优劣，以期为大型水轮发电机组内部短路主保护的最佳方案选择提供依据。