| 注入式定子接地保护在金安桥600MW机组上的应用 |
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| 引用本文： | 赵林,胥亚宁. 注入式定子接地保护在金安桥600MW机组上的应用[J]. 水力发电, 2011, 37(1) |
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| 作者姓名： | 赵林 胥亚宁 |
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| 作者单位： | 金安桥水力发电厂,云南丽江,674100 |
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| 摘 要： | 阐述了大容量发电机定子接地保护的要求,描述了金安桥水力发电厂20 Hz电源注入式定子接地保护原理的构成,并详细介绍了注入式保护与传统的双频式定子接地保护相比较的优势;结合金安桥水电站的实际运行说明中性点接地变压器变比大小、接地变二次电阻值与定子单相接地保护灵敏度的相互配合的意义.
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| 关 键 词： | 20 Hz电源 注入式 接地电流 配电变压器 定子接地保护 |
Application of Injected-type Stator Ground Protection on the 600 MW Unit of Jin'anqiao Hydropower Station |
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| Zhao Lin,Xu Yaning. Application of Injected-type Stator Ground Protection on the 600 MW Unit of Jin'anqiao Hydropower Station[J]. Water Power, 2011, 37(1) |
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| Authors: | Zhao Lin Xu Yaning |
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| Affiliation: | Zhao Lin,Xu Yaning(Jin'anqiao Hydropower Plant,Lijiang 674100,Yunnan,China) |
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| Abstract: | The stator ground protection based on injecting 20 Hz power source signal for Jin'anqiao Hydropower Station was introduced,and the injected-type and traditional dual-frequency protections were compared.The actual operation of Jin'anqiao Hydropower Station shows that the matches between the ratio of neutral transformer,the ground resistance and the sensitivity of stator single-phase ground protection are important for stator ground protection. |
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| Keywords: | 20 Hz power source injected-type grounding current distribution transformer stator ground protection |
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