基于非晶合金材料的开关恢复过电压抑制器设计与实现  

作　　者：姚成 

机构地区：[1]日新电机(无锡)有限公司,江苏无锡214112

出　　处：《科技创新与应用》2023年第4期43-46,共4页Technology Innovation and Application

摘　　要：利用并联电容器的方式进行电力系统无功补偿,故障发生率较高,可能会影响电网安全稳定运行,这是由于投切时会产生过电压,甚至会导致断路器重燃,目前虽可利用老炼试验降低重燃率,但由于还未研发出无重燃真空断路器,因而需要采用抑制技术减少断路器重燃机率,从而降低过电压形成对电网所产生的危害。为此,该文基于并联电容器重燃时刻开关参数统计分析,得出参数变化规律,在此基础上设计一款利用非晶合金材料为铁心的开关恢复过电压抑制器,并对放电线圈的参数进行优化设计,而后通过现场试验及挂网试运行证实此抑制技术对高压并联电容器投切过程中过电压的形成有显著抑制效果。The use of shunt capacitors for reactive power compensation in the power system will affect the safe and stable operation of the power grid due to the high failure rate.It is mainly caused by overvoltage during switching,and even re-ignition of the circuit breaker.The aging test is used to reduce the re-ignition rate,but since no re-ignition vacuum circuit breaker has been developed,it is necessary to reduce the re-ignition probability of the circuit breaker through the application of suppression technology,thereby reducing the damage caused by overvoltage to the power grid.For this reason,based on the statistical analysis of the switch parameters at the reignition time of the shunt capacitor,the change law of the parameters is obtained.On this basis,a switch recovery overvoltage suppressor using amorphous alloy as the core is designed,and the parameters of the discharge coil are optimized.Then,through the field test and trial operation,it is proved that this suppression technology has a significant inhibitory effect on the formation of overvoltage in the switching process of high voltage shunt capacitors.

关 键 词：并联电容器 过电压 开关重燃 抑制器 优化设计 

分 类 号：TM53[电气工程—电器]