distance protection;
tripping zone sensitivity;
mutual coupling;
wire connections;
D O I:
10.2478/v10047-010-0021-2
中图分类号:
O59 [应用物理学];
学科分类号:
摘要:
Possibilities of increasing the distance protection (DP) sensitivity are considered for a double-circuit transmission line connected to a substation busbar only with one circuit-breaker in each phase. The DP sensitivity can be increased on such a line using mutual connections of the phase wires along its whole length. The minimal (optimal) number of the connections is found by the proposed calculation method.