CAJ | 학술논문

高压真空开关的核心部件之一是真空灭弧室,由于其触头开距较大,因此多采用纵向磁场触头,希望触头间隙有较强且较均匀的纵向磁场,这样可降低电弧电流密度,降低电弧能量,从而提高开断性能.该文提出了一种适合应用于高电压等级真空灭弧室的新型纵向磁场触头结构,该触头结构结构简单,便于加工,而且结构强度更好.利用有限元方法对这种新型的真空灭弧室磁向磁场触头间隙的磁场分布特性进行了计算与分析,结果表明其磁场特性优于现有传统纵磁触头结构.利用这种新型触头结构制做了真空灭弧室样机,在单频LC振荡回路上进行了性能测试,结果表明在触头开距为40和60mm时其同样具有良好的开断短路电流的性能.
고압진공개관적핵심부건지일시진공멸호실,유우기촉두개거교대,인차다채용종향자장촉두,희망촉두간극유교강차교균균적종향자장,저양가강저전호전류밀도,강저전호능량,종이제고개단성능.해문제출료일충괄합응용우고전압등급진공멸호실적신형종향자장촉두결구,해촉두결구결구간단,편우가공,이차결구강도경호.이용유한원방법대저충신형적진공멸호실자향자장촉두간극적자장분포특성진행료계산여분석,결과표명기자장특성우우현유전통종자촉두결구.이용저충신형촉두결구제주료진공멸호실양궤,재단빈LC진탕회로상진행료성능측시,결과표명재촉두개거위40화60mm시기동양구유량호적개단단로전류적성능.
Vacuum interrupter is the core of high voltage vacuum switch.Because of the long contact gap,the axial magnetic field (AMF) contact is widely used to generate stronger and evener AMF in the contacts'gap.It can reduce are current density and arc energy,so its interrupting performance is improved.A new AMF electrode applied to high voltage vacuum interrupter was introduced,it has some advantages such as simple structure,easy-machining,strong mechanism intensity and so on.Its axial magnetic field characteristic was calculated and analyzed with the solution of finite element.The calculation results indicated that the axial magnetic field characteristic for the new one is superior to a few traditional electrodes.The vacuum interrupter used the new electrode was tested in the synthetic test circuit,the short-circuit current interrupting ability was still excellent when the contact gap was 40mm and 60mm.