| 一起高压直流电缆终端渗漏油缺陷分析及处理 |
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| 引用本文： | 廖静丽,关健.一起高压直流电缆终端渗漏油缺陷分析及处理[J].吉林电力,2020,48(2):53-56. |
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| 作者姓名： | 廖静丽 关健 |
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| 作者单位： | 广东电网有限责任公司汕头供电局,广东 汕头 515000;广东电网有限责任公司汕头供电局,广东 汕头 515000 |
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| 摘 要： | 针对南澳多端柔性直流输电系统在运行中发生的电缆终端渗漏油现象,基于该电缆终端的结构特点开展分析,得出终端内部油压较大、密封精度不能满足要求导致该电缆终端绝缘油渗漏。采取更换压力箱开关处的密封件即在轴向密封位置增加一道角向密封、将压力箱整定压力由0.16 MPa调至理论值(0.1±0.01)MPa等措施处理缺陷。消除缺陷后经5年的实际运行,未再发生渗漏油情况。
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| 关 键 词： | 直流电缆终端 压力箱 渗油 密封 |
Analysis and Solution of Oil Leakage Defect in HVDC Cable Terminal |
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| LIAO Jingli,GUAN Jian.Analysis and Solution of Oil Leakage Defect in HVDC Cable Terminal[J].Jilin Electric Power,2020,48(2):53-56. |
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| Authors: | LIAO Jingli GUAN Jian |
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| Affiliation: | (Shantou Power Supply Bureau of Guangdong Power Grid Co.,Ltd.,Shantou 515000,China) |
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| Abstract: | Oil leakage occurs at the cable terminals of the multi terminal flexible DC transmission system of Nan'ao project.Based on the analysis of the structural characteristics of the cable terminal,it is concluded that the internal oil pressure of the terminal is large and the sealing accuracy cannot meet the requirements,resulting in the leakage of the insulating oil at the cable terminal.Measures such as adding an angle seal at the axial sealing position,adjusting the set pressure of the pressure tank from 0.16 MPa to the theoretical value of(0.1±0.01)MPa,etc.After five years of operation,no oil leakage occurred. |
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| Keywords: | DC cable terminal pressure box oil seepage sealing |
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