机构缓冲对断路器非对称电流长燃弧开断的影响  

The Influence on Asymmetric Current Breaking Test by Altering Hydraulic Buffer of Operating Mechanism

作　　者：陈高翔[1] 王亚锋[1] CHEN Gao-xiang;WANG Ya-feng(Xi′an XD High Voltage Apparatus Co.Ltd.,Xi′an 710018,China)

机构地区：[1]西安西电高压开关有限责任公司,陕西西安710018

出　　处：《电气开关》2018年第2期13-16,共4页Electric Switchgear

摘　　要：文中首先对某型断路器非对称电流开断失败原因进行了分析,并提出调节缓冲提高速度的改进思路。在此基础上,利用FLUENT仿真软件对改进前后的缓冲器进行模拟,得到特定时刻缓冲器内部流场压力云图,继而通过模拟该工况下灭弧室内部流场对改进效果进行对比。最后,通过试验验证模拟结果。Firstly,this article analyzes the reasons about a test where the circuit-breaker doesn′t clear at asymmetry current.And then giving a modified to increase speed by adjusting the buffer.According to the result,to simulate for hydraulic buffer of the circuit-breaker by FLUENT software.Next,getting the pressure nephogram of hydraulic buffer internal flow field at a given time,And contrast the improvement result through the simulation for arc chamber working condition when in this particular moment.Finally,the result of simulation is validated with test.

关 键 词：非对称电流 机构缓冲 流场 特性曲线 

分 类 号：TM56[电气工程—电器]