| 引用本文: | 桂 林,郭玉恒,陈 俊,王祥珩,王维俭.二滩发电机主保护技术改进工作研究[J].电力自动化设备,2013,33(9): |
| GUI Lin,GUO Yuheng,CHEN Jun,WANG Xiangheng,WANG Weijian.Technical renovation for main protection of Ertan hydroelectric generator[J].Electric Power Automation Equipment,2013,33(9): |
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| 摘要: |
| 利用现有中性点引出方式和分支组电流互感器（TA）的布置来实现二滩水电站发电机主保护技术改进工作，通过将每相分支TA进行一定的连接，构成1套不完全裂相横差保护、1套不完全纵差保护和1套完全纵差保护。同时拓展了偶数多分支发电机主保护设计思路，其应立足于引出3个中性点且在每相装设3个分支组TA。技术改进方案既考虑了保护性能的互补，又保障了保护装置的稳定运行。 |
| 关键词: 水轮发电机 偶数多分支 叠绕 波绕 继电保护 内部短路计算 |
| DOI： |
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| 基金项目:国家自然科学基金资助项目（50707014） |
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| Technical renovation for main protection of Ertan hydroelectric generator |
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GUI Lin1, GUO Yuheng2, CHEN Jun3, WANG Xiangheng1, WANG Weijian1
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1.State Key Laboratory of Control and Simulation of Power Systems and Generation Equipment，
Department of Electrical Engineering，Tsinghua University，Beijing 100084，China;2.Ertan Hydropower Plant，Panzhihua 617000，China;3.NR Electric Co.，Ltd.，Nanjing 211102，China
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| Abstract: |
| The technical renovation for the main protection of Ertan hydroelectric generator is based on the leading mode of neutral point and the disposal of branch current transformers. The branch current transformers of each phase are connected together in a designed way to form a set of incomplete split-phase differential protection，a set of incomplete longitudinal differential protection and a set of complete longitudinal differential protection. The main protection configuration scheme for the generator with even branches is developed，which has three neutral points and equips three branch current transformers in each phase. The proposed technical renovation scheme considers the complementation of protection performance while ensures the stable operation of protection devices. |
| Key words: hydroelectric generators even branches lap winding wave winding relay protection internal short circuit calculation |
