| 柔性直流系统挤出绝缘电缆暂态过电压仿真 |
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| 引用本文： | 刘浩,刘学忠,田石金,田野,傅明利.柔性直流系统挤出绝缘电缆暂态过电压仿真[J].南方电网技术,2015,9(10):42-46. |
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| 作者姓名： | 刘浩 刘学忠 田石金 田野 傅明利 |
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| 作者单位： | 西安交通大学电气绝缘研究中心，西安710049,西安交通大学电气绝缘研究中心，西安710049,西安交通大学电气绝缘研究中心，西安710049,南方电网科学研究院，广州510080,南方电网科学研究院，广州510080 |
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| 摘 要： | 电压源换流器高压直流(VSC HVDC)输电系统中广泛应用了挤出绝缘直流电缆。针对开关操作、内部故障以及雷击所引起的暂态过电压对直流电缆系统可靠性的挑战，基于南澳柔性直流输电示范工程，利用PSCAD/EMTDC建立直流电缆系统仿真模型，设置交流单相接地、两相短路、桥臂电抗器接地等不同类型的故障，分析了各类故障条件下直流电缆系统的暂态过电压特性。研究结果表明，直流电缆端部过电压峰值最大可达2 p.u.，且电缆端部出现的过电压幅值与短路电阻值有关。
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| 关 键 词： | 电压源换流器高压直流 直流电缆系统 南澳工程 暂态过电压 |
Transient Over voltage Simulation of Extruded Insulated Cable in
VSC HVDC System |
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| LIU Hao,LIU Xuezhong,TIAN Shijin,TIAN Ye and FU Mingli.Transient Over voltage Simulation of Extruded Insulated Cable in
VSC HVDC System[J].Southern Power System Technology,2015,9(10):42-46. |
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| Authors: | LIU Hao LIU Xuezhong TIAN Shijin TIAN Ye and FU Mingli |
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| Affiliation: | Electric Insulation Research Center, Xi'an Jiaotong University, Xi'an 710049, China,Electric Insulation Research Center, Xi'an Jiaotong University, Xi'an 710049, China,Electric Insulation Research Center, Xi'an Jiaotong University, Xi'an 710049, China,Electric Power Research Institute, CSG, Guangzhou 510080, China and Electric Power Research Institute, CSG, Guangzhou 510080, China |
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| Abstract: | Extruded insulated DC cable has been widely used in VSC HVDC transmission systems. The reliability of DC cable system is challenged by the transient over
voltage caused by switching operation, internal fault and lightning stroke. Based on Nan ao demonstration project, a simulation model of HVDC power cable system is established with PSCAD/EMTDC. Different types of faults including AC single-phase grounding fault, two-phase short circuit fault and arm reactor grounding fault are set up to study the transient characteristics of the DC cable system. Research results show that the maximum overvoltage peak at the DC cable terminal can run up to about 2 p.u.;and the over voltage at DC cable terminal is affected by the fault resistance values. |
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| Keywords: | VSC HVDC DC cable system Nan ao project transient over voltage |
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