| 基于PSCAD的特高压直流输电系统单相接地过电压的研究 |
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| 引用本文： | 谢丰战,韦翠琼,陈超兮,邬华颖,卢兰静.基于PSCAD的特高压直流输电系统单相接地过电压的研究[J].电气开关,2014,52(6):61-64. |
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| 作者姓名： | 谢丰战 韦翠琼 陈超兮 邬华颖 卢兰静 |
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| 作者单位： | 广西大学电气工程学院,广西 南宁,530001 |
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| 摘 要： | 以±800kV云广特高压直流输电工程为背景，应用电磁暂态计算软件PSCAD建立了特高压直流输电系统模型，详细研究了特高压直流线路距整流站不同距离发生对地闪络故障时过电压的沿线分布及水平，指出直流线路中点故障时非故障极线路中点的过电压幅值最高，计算分析了杆塔接地电阻、换流站端部阻抗、线路长度及线路参数等因素对线路过电压水平的影响。
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| 关 键 词： | 特高压直流 输电线路 直流线路故障 过电压 |
Research on Overvoltage Caused by Single-phase Grounding on UHVDC Transmission System Based on PSCAD |
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| XIE Feng-zhan,WEI Cui-qiong,CHEN Chao-xi,WU Hua-ying,LU Lan-jing.Research on Overvoltage Caused by Single-phase Grounding on UHVDC Transmission System Based on PSCAD[J].Electric Switchgear,2014,52(6):61-64. |
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| Authors: | XIE Feng-zhan WEI Cui-qiong CHEN Chao-xi WU Hua-ying LU Lan-jing |
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| Affiliation: | XIE Feng-zhan , WEI Cui-qiong , CHEN Chao-xi , WU Hua-ying ,LU Lan-fing ( College of Electrical Engineering, Guangxi University, Nanning 530001, China) |
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| Abstract: | Based on concrete parameters of _ 800 kV UHVDC transmission system from YunNan to GuangDong and by use of electromagnetic transient simulation software PSCAD/EMTDC, a model of UHVDC power transmission system is built; the distribution of inner overvoltage as well as the voltage level along UHVDC transmission line due to the line-to- ground flashover faults happened at different distances to rectifier station of UHVDC system are researched in detail ; it is pointed out that the highest overvoltage appears at the middle point of transmission line belonging to non-fauhy pole. The influences of following factors, such as tower grounding resistance, terminal impedance of converter station, length of transmission line and parameters of transmission line, on overvohage level are analyzed and calculated. |
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| Keywords: | UHVDC transmission line DC line fault overvohage |
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