摘要
海底长电缆线路的充电电容较高,在不同的运行工况下会产生较严重的过电压,而在高抗退出运行情况下,陆上架空送出线路故障产生的过电压会传送至海底电缆。结合工程实际,基于ATPEMTP软件对某海上风电场220 kV送出海缆及架空线路进行建模,对不同运行工况下送出海缆工频过电压、送出架空线路短路故障及断线故障时的海缆工频过电压进行仿真计算,结果表明,合理的高抗配置方案可有效降低海上风电送出海缆的工频过电压水平。
The charging capacitance of the submarine long cable line is high,which will produce more serious overvoltage under different operating conditions,and in the case of high resistance exit operation,the overvoltage generated by the fault of the onshore overhead transmission line will be transmitted to the submarine cable.Combined with the actual engineering,based on the ATP-EMTP software,the 220 kV transmission submarine cable and overhead line of an offshore wind farm were modeled,and simulating and calculating the power frequency overvoltage of the submarine cable when the power frequency overvoltage,the overhead line short circuit fault and the disconnection fault of the submarine cable under different operating conditions.The results showed that a reasonable high resistance configuration scheme can effectively reduce the power frequency overvoltage level of offshore wind power transmission cable.
作者
何发武
邓婧
卢赓
HE Fa-wu;DENG Jing;LU Geng(Guangzhou Railway Polytechnic,Guangzhou 511300,China;China Energy Engineering Group Guangdong Electric Power Design Institute Co.,Ltd,Guangzhou 510663,China)
出处
《电工电气》
2024年第6期35-39,共5页
Electrotechnics Electric
基金
四川省科技计划资助项目(2021YFG0026)
2024年广州铁路职业技术学院校级大学生创新创业项目(2024CXCY012)。
