摘要
随着特高压直流输电工程建设日益深入,气体绝缘金属封闭输电线路(GIL)以占地面积小、环境兼容性好、输送容量大、能承载高电压及大电流等优点被广泛应用于特高压直流输电系统,其运行稳定性研究被提上日程。为了分析GIL运行过程中三支柱绝缘子故障原因,研究三支柱绝缘子运行特性,通过GIL超声波局部放电分析、解体检查、固定三支柱绝缘子受力分析及固定三支柱绝缘子生产工艺分析,明确GIL三支柱绝缘子内部制造缺陷为故障原因。分析认为,通过对GIL固定三支柱装配优化、绝缘支柱生产过程优化及固定三支柱连板优化等措施,改进后三支柱绝缘子应用于生产现场可有效降低GIL设备故障率,提高GIL运行稳定性,对特高压直流输电工程的可靠运行有着重要意义。
With the increasingly in-depth construction of UHVDC transmission project,Gas Insulated TransmissionLine(GIL)has been widely used in UHVDC transmission system due to its advantages such as small area,good en-vironmental compatibility,large transmission capacity,high voltage and large current,etc,and the study on its op-erational stability has been put on the schedule.In order to analyze the reasons for the fault of the three-pillar insula-tor during the operation of GIL and study the operation characteristics of the three-pillar insulator,the internal manu-facturing defect of the three-pillar insulator was identified as the cause of the fault through the analysis of partial dis-charge of GIL ultrasonic wave,disintegration inspection,force analysis of the fixed three-pillar insulator and produc-tion process analysis of the fixed three-pillar insulator.The analysis shows that through the measures of GIL fixedthree-pillar assembly optimization,insulation pillar production process optimization and fixed-three-pillar plate opti-mization,the improved three-pillar insulator applied to the production site can effectively reduce the equipment fail-ure rate of GIL,improve the operation stability of GIL,which is of great significance to the reliable operation of UH-VDC transmission project.
作者
王井飞
张强
李祥斌
黄大彬
张任驰
WANG Jingfei;ZHANG Qiang;LI Xiangbin;HUANG Dabin;ZHANG Renchi(CSG EHV Transmission Company Kunming Bureau,Kunming 650217,China)
出处
《高压电器》
CAS
CSCD
北大核心
2020年第1期246-252,共7页
High Voltage Apparatus
作者简介
王井飞(1989—),男,工程师,本科,从事特高压交直流并联系统运行维护工作;张强(1985—),男,工程师,本科,从事特高压交直流并联系统运行维护以及电力系统最优运行与规划方面的工作;李祥斌(1990—),男,工程师,本科,从事特高压交直流并联系统运行维护工作;黄大彬(1989—),男,工程师,本科,从事特高压交直流并联系统运行维护工作;张任驰(1990—),男,工程师,本科,从事特高压交直流并联系统运行维护工作。
