【摘要】 以SF70 0 80 / 1972 0大型水轮发电机为例 ,在充分分析不完全差动保护在各种内部短路故障情况下的差动电流及其灵敏度规律的基础上 ,讨论了中性点侧分支的不同组合方式对保护动作的影响 ,分析结果可以为不完全差动保护方案设计提供理论依据。更多还原

【Abstract】 With SF700?80/19720 large size hydro generator as an example,the differential current and sensibility law of incomplete differential protection under various internal SC fault conditions are investigated in detail.Based on that,the influences of different allocation schemes on the functioning of incomplete differential protection are discussed.The analytic result provides the theoretical basis for the scheme design of incomplete differential protection.更多还原