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| 发电机记忆过流保护动作分析 | |
| 引用本文： | 兀鹏越,侯瑞,杨奎刚,王小辉,韩炜炜.发电机记忆过流保护动作分析[J].电力建设,2012,33(1):57-60. |
| 作者姓名： | 兀鹏越 侯瑞 杨奎刚 王小辉 韩炜炜 |
| 作者单位： | 1. 西安热工研究院有限公司,西安市,710043 2. 华能铜川电厂,陕西省铜川市,727100 3. 南瑞继保电气有限公司,南京市,211100 |
| 摘 要： | 针对铜川电厂1号机组主变高压侧B相接地故障中，主变差动保护动作后，发电机记忆过流保护仍动作跳母联的事故，详细分析了发电机记忆过流保护的动作行为，对增加发电机并网状态和取消跳母联出口方式这2种事故处理措施进行了说明。结合当前大机组继电保护的发展，进一步讨论了发电机后备保护配置问题，提出简化发电机后备保护的建议。 |
| 关 键 词： | 复压过流 记忆过流 后备保护 发电机 事故分析 |
| 收稿时间： | 2011-03-01 |
Analysis on Memory Over-current Protection of Generator |
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| WU Pengyue,HOU Rui,YANG Kuigang,WANG Xiaohui,HAN Weiwei.Analysis on Memory Over-current Protection of Generator[J].Electric Power Construction,2012,33(1):57-60. | |
| Authors: | WU Pengyue HOU Rui YANG Kuigang WANG Xiaohui HAN Weiwei |
| Affiliation: | 1.Xi＇an Thermal Power Research Institute Co.,Ltd.,Xi＇an 710043,China; 2.Huaneng Tongchuan Power Plant,Tongchuan 727100,Shaanxi Province,China; 3.Nari-relays Electric Co.,Ltd.,Nanjing 211100,China) |
| Abstract: | In No.1 unit of Tongchuan power plant, the bus coupler breaker tripping accident occurs which is caused by memory over-current protection malfunction of generator after main transformer differential protection acts in B phase ground fault of HV side of main transformer. The principles of memory over-current protection of generator are analyzed in detail. In addition, the treatment of accidents is put forward including increase of generator interconnection and cancellation of bus coupler breaker tripping. Combining with the development of relay protection for large units, the backup protection of generator is discussed, for simplifying which the corresponding suggestions are provided. |
| Keywords: | compound voltage over-current protection memory over-current protection backup protection generator accident analysis |
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