摘要
为给220kV复合绝缘横担均压屏蔽装置结构优化设计提供参考,基于初设参数建立了包含杆塔、大地、导线、均压屏蔽装置的三维静电场有限元模型,分析了均压屏蔽装置管径、环径、安装位置等参数对横担绝缘子和斜拉绝缘子护套与端部金具连接位置、均压屏蔽装置表面最大电场强度的影响,获得了影响规律曲线,依据场强限值选取了合适的均压屏蔽装置结构参数范围。优化结果表明:边相和中相复合横担护套与金具连接位置电场强度分别为3.80kV/cm和4.22kV/cm,较优化前分别下降了15%和11.9%;边相与中相斜拉绝缘子护套与金具连接位置电场强度分别为3.90kV/cm和3.68kV/cm,较优化前分别下降了17.2%与24.6%。
To provide references for the structure optimization design of 220 kV composite insulated cross-arm grading and shielding devices,a three-dimensional electrostatic field finite element model was established based on the initial parameters,containing the tower,earth,conductor and grading and shielding devices.We calculated the influences of pipe diameter,ring diameter,installation positions and other parameters of the grading and shielding devices upon the connection position between the insulated sheaths of both cross-arm insulator and cable-stayed insulator and metal fittings,and the maximum electric field strength on the surface of the grading and shielding devices.The patterns of the relations mentioned above were found.And the suggested ranges of structural parameters of the grading and shielding devices are given according to the electric field strength limitation values.After optimization,the results show that the electric field strength of the connect position of cross-arm insulator sheaths and metal fittings for side phase cross-arm and middle phase cross-arm are 3.80 kV/cm and 4.22 kV/cm respectively,which are 15%and 11.9%lower than those before optimization;the electric field strength of the connecting positions of cable-stayed insulator sheaths and metal fittings for both side phase cross-arm and middle phase cross-arm are 3.90 kV/cm and 3.68 kV/cm respectively,which are 17.2%and 24.6%lower than those before optimization.
作者
李健
柯锐
毕吉禹
沈帆
梅端
朱晓东
何昌林
吴峰
黄道春
LI Jian;KE Rui;BI Jiyu;SHEN Fan;MEI Duan;ZHU Xiaodong;HE Changlin;WU Feng;HUANG Daochun(NARI Group Corporation Ltd.,Nanjing 211106,China;Wuhan NARI Limited Liability Company,State Grid Electric Power Research Institute,Wuhan 430074,China;Hubei Key Laboratory of Power Grid Lightning Risk Prevention,Wuhan 430074,China;National Energy Key Laboratory of Lightning Disaster Detection,Early Warning and Safety Protection,Wuhan 430074,China;School of Electrical Engineering and Automation,Wuhan University,Wuhan 430072,China)
出处
《电瓷避雷器》
2025年第4期119-128,共10页
Insulators and Surge Arresters
基金
湖北省中科院科技合作专项项目(编号:20220104)。
关键词
复合绝缘横担
均压屏蔽装置
有限元法
电场强度
结构优化
composite insulated cross-arm
grading and shielding devices
finite element method(FEM)
electric field strength
structure optimization
