| 超高压输电线路直流融冰过程中接地故障定位技术 |
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| 引用本文： | 张云柯,李博通,李斌,王通.超高压输电线路直流融冰过程中接地故障定位技术[J].电力系统自动化,2017,41(20):105-111. |
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| 作者姓名： | 张云柯 李博通 李斌 王通 |
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| 作者单位： | 智能电网教育部重点实验室(天津大学), 天津市 300072; 天津大学电气自动化与信息工程学院, 天津市 300072,智能电网教育部重点实验室(天津大学), 天津市 300072; 天津大学电气自动化与信息工程学院, 天津市 300072,智能电网教育部重点实验室(天津大学), 天津市 300072; 天津大学电气自动化与信息工程学院, 天津市 300072,天津大学电气自动化与信息工程学院, 天津市 300072 |
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| 基金项目： | 国家自然科学基金资助项目(51677125)；高等学校博士学科点专项科研基金新教师类资助项目(20120032120085) |
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| 摘 要： | 直流融冰技术是解决超高压输电线路覆冰问题的有效方法。由于融冰过程中冰水的掉落易导致输电线路的单相接地故障,研究了融冰线路的故障定位方法,以保障融冰过程的顺利进行及融冰设备的安全运行。首先对直流融冰系统的组成及整流器拓扑结构、控制策略进行了介绍并搭建了融冰系统的详细仿真模型。针对定电流控制方式下直流融冰线路的单相接地故障,通过对沿线电压分布的深入分析,提出了基于贝瑞隆模型的直流融冰线路接地故障定位方法。利用PSCAD/EMTDC仿真软件对融冰线路故障进行了仿真验证,结果表明该方法能够实现融冰线路接地故障的快速准确定位。
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| 关 键 词： | 直流融冰装置 融冰线路 故障定位 贝瑞隆模型 定电流控制 |
| 收稿时间： | 2016/9/7 0:00:00 |
| 修稿时间： | 2017/4/26 0:00:00 |
Ground-fault Location Technology for Extra-high Voltage Transmission Lines During DC De-icing Process |
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| ZHANG Yunke,LI Botong,LI Bin and WANG Tong.Ground-fault Location Technology for Extra-high Voltage Transmission Lines During DC De-icing Process[J].Automation of Electric Power Systems,2017,41(20):105-111. |
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| Authors: | ZHANG Yunke LI Botong LI Bin and WANG Tong |
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| Affiliation: | Key Laboratory of Smart Grid of Ministry of Education(Tianjin University), Tianjin 300072, China; School of Electrical and Information Engineering, Tianjin University, Tianjin 300072, China,Key Laboratory of Smart Grid of Ministry of Education(Tianjin University), Tianjin 300072, China; School of Electrical and Information Engineering, Tianjin University, Tianjin 300072, China,Key Laboratory of Smart Grid of Ministry of Education(Tianjin University), Tianjin 300072, China; School of Electrical and Information Engineering, Tianjin University, Tianjin 300072, China and School of Electrical and Information Engineering, Tianjin University, Tianjin 300072, China |
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| Abstract: | DC de-icing technology is an effective measure to solve the ice-cladding problems of extra-high voltage transmission lines. During DC de-icing process, the single-phase ground fault of transmission lines is easily caused by falling ice water. The fault location method is studied to ensure safe and reliable operation of the transmission lines and system. The DC de-icing system and the topological structure and control strategy of converter are described first, and a detailed simulation model of the DC de-icing system is built. Based on Bergeron model, the voltage profile along the line is analyzed at length and a novel fault location method is proposed to locate the single-phase ground fault of de-icing transmission lines under fixed-current control. PSCAD/EMTDC simulation software is used to simulate and test all kinds of single-phase ground faults. Simulation results show that the fault of de-icing transmission lines can be located quickly and accurately in time domain with the proposed method. |
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| Keywords: | DC de-icer de-icing transmission line fault location Bergeron model fixed-current control |
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