CAJ | 학술논문

对断路器的维修策略进行研究，利用断路器操动机构二次侧分合闸线圈中电流、电压曲线以及辅助开关的动作时间，提出一种断路器状态评估方法；基于非参数核密度估计方法，计算出断路器状态的概率分布，更加全面地反映了断路器的实际状态；在此基础上，计算出断路器状态异常的概率，综合分析断路器的异常概率与断路器对变电站风险的影响，提出断路器维修决策方法，在兼顾断路器状态和变电站风险的情况下确定经济可靠的维修方式。该方法可以在提升系统可靠性的同时保证资源分配的经济性。
대단로기적유수책략진행연구，이용단로기조동궤구이차측분합갑선권중전류、전압곡선이급보조개관적동작시간，제출일충단로기상태평고방법；기우비삼수핵밀도고계방법，계산출단로기상태적개솔분포，경가전면지반영료단로기적실제상태；재차기출상，계산출단로기상태이상적개솔，종합분석단로기적이상개솔여단로기대변전참풍험적영향，제출단로기유수결책방법，재겸고단로기상태화변전참풍험적정황하학정경제가고적유수방식。해방법가이재제승계통가고성적동시보증자원분배적경제성。
Based on the maintenance of circuit breakers recently,an evaluation method of circuit breaker condition was proposed by using the waveform of secondary trip-and close-coil current from circuit breaker mechanical part,operation times of different auxiliary contacts,and trip &close initiation time.A non-parametric kernel density evaluation method was used to assess the probability distribution of a breaker condition index.Then the probability of a circuit breaker op-erating in the abnormal condition can be assessed.Comprehensive analysis abnormal probability and substation risk,the maintenance strategy of circuit breakers with economy and reliability was presented.The proposed method can greatly increase the system reliability and guarantee the economy of resource allocation.