CAJ | 학술논문

高压输电线路由于跨度大、所经之处自然环境复杂,因而故障率较高.为及时发现故障并准确定位,可以有效地减少维护的工作量、提高线路的运行水平.能准确、及时地故障测距具有突出的经济意义和社会效益.根据双端行波法的测距原理,采用关联维分析方法对输电线路进行故障检测与测距.通过计算输电线路电压行波的关联维数进行故障检测,进而采用基于变步长的关联维突变时刻搜索算法捕捉故障发生时行波到达线路两端的时间差△t,最后采用双端行波测距法进行故障测距.仿真结果满足电力系统对精确故障定位的要求,验证了方法的有效性.
고압수전선로유우과도대、소경지처자연배경복잡,인이고장솔교고.위급시발현고장병준학정위,가이유효지감소유호적공작량、제고선로적운행수평.능준학、급시지고장측거구유돌출적경제의의화사회효익.근거쌍단행파법적측거원리,채용관련유분석방법대수전선로진행고장검측여측거.통과계산수전선로전압행파적관련유수진행고장검측,진이채용기우변보장적관련유돌변시각수색산법포착고장발생시행파도체선로량단적시간차△t,최후채용쌍단행파측거법진행고장측거.방진결과만족전력계통대정학고장정위적요구,험증료방법적유효성.
Because of the large-span of transmission line and the complex natural environment,so the fault rate of transmission line is high.Detecting and locating fault in time is an effective way to reduce the maintain workload and improve the running level of transmission line.So detecting and locating fault accurately possesses the economic and social benefits.In the paper,based on the double terminal method of traveling wave,the correlation dimension analysis method is applied to fault detection and location of transmission line.First of all,the voltage traveling-wave correlation dimension of transmission lines is calculated for fault detection,and then the algorithm which search is the moment when the mutation correlation dimension happens based on variable step size is used to capture the moment of failure occurred,and the double terminal method of traveling wave is used for fault location.The simulation results meet the requirement of the fault location of power system,and the effectiveness of the method is verified.