CAJ | 학술논문

为得到基于40.5kV光控模块单元的U型三断口真空断路器的动态分压特性,给合理选择均压措施提供参考,通过低压、小电流的合成开断试验测量了该断路器弧后瞬态恢复电压（transient recovery voltage,TRV）的分配特性。同时通过试验验证了串接大电容使均压电容兼作分压器用的TRV测量方法的有效性。而对大电流弧后三断口真空断路器的TRV分配特性,基于连续过渡模型在PSCAD/EMTDC中进行了仿真分析。试验和仿真结果表明：小电流开断时,TRV分配特性与静态电压分配特性相近,静态均压设计可满足小电流开断的要求;大电流开断条件下,各断口残余电荷参数的差异可能对TRV分配产生显著影响;进行动态均压设计时,需要考虑断口不同期可能导致的TRV分配不均匀程度增大的问题。
위득도기우40.5kV광공모괴단원적U형삼단구진공단로기적동태분압특성,급합리선택균압조시제공삼고,통과저압、소전류적합성개단시험측량료해단로기호후순태회복전압（transient recovery voltage,TRV）적분배특성。동시통과시험험증료천접대전용사균압전용겸작분압기용적TRV측량방법적유효성。이대대전류호후삼단구진공단로기적TRV분배특성,기우련속과도모형재PSCAD/EMTDC중진행료방진분석。시험화방진결과표명：소전류개단시,TRV분배특성여정태전압분배특성상근,정태균압설계가만족소전류개단적요구;대전류개단조건하,각단구잔여전하삼수적차이가능대TRV분배산생현저영향;진행동태균압설계시,수요고필단구불동기가능도치적TRV분배불균균정도증대적문제。
In order to obtain the dynamic voltage distribution characteristics of U-shaped triple-break vacuum circuit breakers based on 40.5kV fiber-controlled vacuum interrupter modules(FCVIMs)and to give references for choosing suitable voltage-sharing measures,synthetic breaking tests with low voltage and small current were carried out and the transient recovery voltage(TRV)distribution characteristics were measured.The measuring method for TRV by connecting a large capacitor with the grading capacitor in series was also verified through tests.Moreover,the TRV distribution characteristics after large current interruptions were analyzed by PSCAD/EMTDC based on the continuous transition model.Some conclusions are drawn from the test and simulation results:after small current interruptions,the TRV distribution characteristics are close to those of the static state and the static voltage sharing design can satisfy the requirements of small current interruptions;after high current interruptions,the differences of residual charge parameters among breaks may have a significant impact on the voltage distribution;the increase of non-uniform level of the voltage distribution caused by the asynchronies among breaks should be considered for the dynamic voltage sharing design.