摘要
气体绝缘金属封闭输电线路(gas insulated metal-enclosed transmission line,GIL)中设置微粒陷阱是最常用的微粒抑制措施,由于其真型试验需投入较高成本验证设计能效,目前多采用仿真技术手段进行辅助分析。该文针对直流电压下微粒陷阱结构设计,考虑微粒的受力及电荷变化机制,基于有限元法提出一种可以应用于实际结构中的球形微粒带电运动的仿真方法。建立320kV直流GIL管母线部分模型,在模型中分别设置四种不同类型的微粒陷阱,计算并分析不同陷阱的捕获率及其对微粒运动特性的影响。结果表明,该方法能够有效模拟直流电压下的微粒运动特性,上提式微粒陷阱的捕获能效优异,能够有效阻挡动能较大的入陷微粒,降低其逃逸的概率。该文仿真计算方法和研究结果适用于不同结构气体绝缘输电线路中不同类型微粒陷阱的捕获率分析,对开展工程上气体绝缘输电线路中微粒陷阱的选型及布置具有指导意义。
Setting particle traps in gas insulated metal enclosed transmission line(GIL)is the most commonly used particle suppression measure.Carrying out full-scale experiment to verify particle traps’efficiency requires high cost;therefore,the simulation technology is often used for auxiliary analysis.Focusing on the structural design of particle traps under DC voltage,and considering the force and charge change mechanism of particles,this paper proposed a simulation method of motion of charged spherical particles,which can be applied to practical structures based on the finite element method.The model of 320kv DC Gil was established and four different types of particle traps were set in the model.The capture rates of different traps and their effects on particle motion characteristics were calculated and analyzed.The results show that this method can effectively simulate the particle motion characteristics under DC voltage,the capture efficiency of the lifting particle trap is excellent,the trapped particles with large kinetic energy can be effectively blocked,and the escape probability can be reduced.The simulation method and research results in this paper are applicable to the capture rate analysis of different types of particle traps in gas insulated transmission lines with different structures,and have guiding significance for the selection and layout of particle traps in gas insulated transmission lines in engineering.
作者
刘鹏
李智凯
田汇冬
吴泽华
彭宗仁
谭盛武
李劲彬
文雅钦
LIU Peng;LI Zhikai;TIAN Huidong;WU Zehua;PENG Zongren;TAN Shengwu;LI Jinbin;WEN Yaqin(State Key Laboratory of Electrical Insulation and Power Equipment(Xi’an Jiaotong University),Xi’an 710049,Shaanxi Province,China;PingGao Group Co.,Ltd.,Pingdingshan 467000,Henan Province,China;Electric Power Science Research Institute of State Grid Hubei Electric Power Research Institute,Wuhan 430077,Hubei Province,China)
出处
《中国电机工程学报》
EI
CSCD
北大核心
2022年第15期5740-5750,共11页
Proceedings of the CSEE
基金
国家电网公司科技项目(SGHBDK00SBJS2000363)。
关键词
气体绝缘金属封闭输电线路
金属微粒
微粒陷阱
仿真方法
捕获效能
gas insulated metal-enclosed transmission line(GIL)
metallic particle
particle trap
simulation method
capture efficiency
