Overvoltage suppression for UHV transmission lines |
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| Authors: | LI Yongli LIU Taihua LI Zhongqing JING Lei LONG Ying FAN Jianzhong |
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| Institution: | 1. Key Laboratory of Power System Simulation and Control of Ministry of Education, Tianjin University, Tianjin 300072, China
2. ABB (China) Research Ltd., Beijing 100016, China |
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| Abstract: | The overvoltage phenomena of ultra high voltage (UHV) transmission lines are analyzed and verified by EMTDC/PSCAD simulation. Referring to the theoretical analyses and operating experiences of extra high voltage (EHV) transmission lines in China and UHV transmission lines in Russia and Japan, the methods to suppress the internal overvoltage in UHV transmission lines by protection and control strategies are discussed. Through the cooperation among the recloser, shunt reactor, tripping and closing resistance, and metal oxide varistor (MOV), the overvoltage can be restrained within an acceptable level. |
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| Keywords: | overvoltage reclosing relay protection shunt reactors suppression UHV transmission lines |
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