压气室参数对断路器分闸过程中气压建立的影响研究  

Research on the influence of compressor chamber parameters on the establishment of air pressure during the opening process of circuit breakers

作　　者：刘绍勇[1] 曹蕤 高文 刘广义 宇文博 LIU Shaoyong;CAO Rui;GAO Wen;LIU Guangyi;YU Wenbo(China Yangtze Power Co.,Ltd.-Wudongde Hydropower Station,Kunming 651500,China;Xi’an High Voltage Apparatus Research Institute Co.,Ltd.,Xi’an 710077,China)

机构地区：[1]中国长江电力股份有限公司乌东德水电站,云南昆明651500 [2]西安高压电器研究院股份有限公司,陕西西安710077

出　　处：《电气应用》2024年第11期90-95,共6页Electrotechnical Application

基　　金：中国长江电力股份有限公司资助(科研项目合同编号:Z522302023)。

摘　　要：压气室作为断路器灭弧室的重要组成部分,如何提高分闸过程中压气室内部的气压,将影响灭弧室的开断性能。基于典型压气室结构,计算并讨论相同容积下,不同长宽比对于压气室建压的影响;此外,通过仿真计算研究在可压缩容积一定时,压气室中不可压缩的寄生容积变化对于压气室内部分闸过程中建压的影响。分析表明,长宽比较小的压气缸参数设置更有利于分闸过程中气压的建立;同时,当可压缩容积一定时,寄生容积与可压缩容积的比值越小,压气室在分闸过程中建压效果越好。The pressure chamber,a key element of the circuit breaker’s arc extinguishing chamber.Therefore,optimizing pressure buildup within the pressure chamber during the opening process may impact the performance of the arc extinguishing chamber.This study focuses on analyzing the impact of different aspect ratios on pressure buildup within a pressure chamber of fixed volume.Additionally,through simulation calculations,the research explores how changes in the incompressible parasitic volume within the pressure chamber affect pressure buildup when the compressible volume remains constant.The findings indicate that pressure chambers with smaller aspect ratios are more effective in establishing pressure during the opening process.Moreover,a smaller ratio of parasitic volume to compressible volume leads to better pressure buildup within the pressure chamber when the compressible volume is constant.

关 键 词：气体断路器 压气室 长宽比 寄生容积 空载分闸 

分 类 号：TM561[电气工程—电器]