10kv馈线多次出现零序电流保护拒动原因分析.pdf

50 10 kV 齐向阳 (新疆新水股份有限公司 乌鲁木齐 830000) 10 kV , , 10 kV , , , : E = 2fN 2 2 2 m , : = E /R = N /R ,= E /R m m m 1 1 m 2 2 m : , , , , , , : , R = L / S m 1 0 , , , , L ( L = L + L ), 2 2 21 22 , , : , R = L / S+ L / S m 1 0 2 0 , , R /R = ( L / S+ L / S) / L / S m m 1 0 2 0 1 0 , = 1+ L / L 2 1 : 0 , ; L L 1 2 ; S , , , , = 10 000, L /L ( L /L = 1 10- 4 ), 2 1 2 1 , , , ( = 1) 0 , , (= 1 000 ), , , , , , m , : , , , 1