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| 接地极开路保护的改进 | |
| 引用本文： | 徐斌,张颖,赵森林,叶雷.接地极开路保护的改进[J].电力系统自动化,2012,36(15):120-123. |
| 作者姓名： | 徐斌 张颖 赵森林 叶雷 |
| 作者单位： | 1. 南京南瑞继保电气有限公司,江苏省南京市,211102 2. 上海交通大学电子信息与电气工程学院,上海市,200240 3. 郑州供电公司,河南省郑州市,450006 |
| 摘 要： | 单极故障后线路上出现的感应电压容易造成接地极开路保护误动,若处理不当会造成双极相继闭锁。针对这一情况,文中从控制和保护2个方面提出了改进方案:控制方面采取新的极隔离方法,尽量先分开线路隔离刀闸来避免引入感应电压;保护方面增加了电流判据,并且改进了出口方式,从而有效防止保护误动。上述解决方案的可行性和有效性在仿真系统上得到了验证。 |
| 关 键 词： | 高压直流 极隔离 接地极开路保护 |
| 收稿时间： | 2011/2/22 0:00:00 |
| 修稿时间： | 6/30/2012 3:39:41 PM |
Improvement of Electrode Line Open Circuit Protection |
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| XU Bin,ZHANG Ying,ZHAO Senlin,YE Lei.Improvement of Electrode Line Open Circuit Protection[J].Automation of Electric Power Systems,2012,36(15):120-123. | |
| Authors: | XU Bin ZHANG Ying ZHAO Senlin YE Lei |
| Affiliation: | 1.NARI-Relays Electric Co.Ltd.,Nanjing 211102,China; 2.School of Electronic Information and Electrical Engineering,Shanghai Jiaotong University,Shanghai 200240,China; 3.Zhengzhou Power Supply Company,Zhengzhou 450006,China) |
| Abstract: | Electrode line open circuit protection for blocked pole will mal-operate due to the induced voltage caused by the healthy pole line after single pole fault,and then block the healthy pole.To avoid thus situation,an improvement scheme is proposed from both control and protection aspects.In the control aspect,a new pole isolation method is adopted,the line switch is switched off as soon as possible to avoid induced voltage.In the protection aspect,a current criterion is added and consequences of protection operation is also suggested.The feasibility and effectiveness of the scheme is verified by real-time digital simulator(RTDS) based simulation tests. |
| Keywords: | high voltage direct current (HVDC) pole isolation electrode line open circuit protection |
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