| 适用于串联电容补偿线路的距离保护新原理 |
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| 引用本文： | 陈福锋,钱国明,薛明军.适用于串联电容补偿线路的距离保护新原理[J].电力系统自动化,2010,34(12):61-66. |
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| 作者姓名： | 陈福锋 钱国明 薛明军 |
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| 作者单位： | 国电南京自动化股份有限公司,江苏省,南京市,210003 |
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| 基金项目： | 已申请国家发明专利,专利申请号：200910030851 |
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| 摘 要： | 以串补电容安装于线路末端的运行方式为例,定义保护与串补电容之间的线路末端的计算电压为补偿电压,分别分析了在串补电容前和串补电容后故障时补偿电压的不同特征.在串补电容前故障时,补偿电压和保护安装处的电压反向,在串补电容后故障时,补偿电压和保护安装处的电压相位接近.据此提出了串联电容补偿线路故障点位置识别的方法,配合传统的距离保护形成新的适用于串联电容补偿线路的距离保护新原理.串补电容前故障距离保护动作情况完全由阻抗继电器决定,无需考虑串补电容影响.新原理能可靠防止距离保护的超越问题,且灵敏度基本不受串补电容的影响.EMTP仿真验证了新原理的有效性和可靠性.
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| 关 键 词： | 串补电容 距离保护 补偿电压 故障点位置识别 灵敏度 |
| 收稿时间： | 1/22/2010 3:29:29 PM |
| 修稿时间： | 4/14/2010 9:09:09 AM |
Research on New Principle of Distance Protection Adapted to Series Capacitor Compensated Line |
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| CHEN Fufeng,QIAN Guoming,XUE Mingjun.Research on New Principle of Distance Protection Adapted to Series Capacitor Compensated Line[J].Automation of Electric Power Systems,2010,34(12):61-66. |
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| Authors: | CHEN Fufeng QIAN Guoming XUE Mingjun |
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| Affiliation: | CHEN Fufeng,QIAN Guoming,XUE Mingjun(Guodian Nanjing Automation Co. Ltd.,Nanjing 210003,China) |
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| Abstract: | Focusing on the operating mode of series compensation capacitors being at the end of transmission lines, this paper defines the terminal calculating voltage between the location of the protective relay and the series compensation capacitor as the compensation voltage. Then the characteristics of the compensation voltage are analyzed in the events of the fault location is before and behind the series compensation capacitor respectively. When the fault location is before the series capacitor, the phase of the... |
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| Keywords: | series compensation capacitor distance protection compensation voltage fault location identification sensitivity |
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