架空线路同杆架设对配电网供电安全可靠性的影响

为最大程度地利用有限的城市架空线路通道资源,提升配电网投资经济性,采用了多回架空线路、不同电压等级架空线路的同杆架设方式,但在实际配电网运维时,已出现110、35 kV线路检修或故障时,多回10 kV线路陪停,造成停电范围及时户数的扩大情况,对供电可靠性产生一定的影响。通过梳理配电网架空线路同杆架设现状情况,开展了同杆架设对供电可靠性影响的理论分析,提出了配电网同杆架设优化改造方式,提升了配电网的供电可靠性。

Influence of Overhead Line Same-Pole Erection on Distribution Network Power Supply Safety and Reliability

To maximize the use of limited urban overhead line channel resources,enhance the investment economy of distribution network,overhead lines with multiple circuits and different voltage grades are erected on the same pole.But in the actual distribution network operations,in the case of 110 and 35 kV line maintenance or failure,multi-circuit 10 kV lines caused blackouts in larger scope and numbers,affecting the power supply reliability.By analyzing the current situation of the same pole erection of overhead lines in the distribution network,this paper conducted the theoretical analysis of the influence of the same pole erection on the power supply reliability,and proposed the optimization and transformation method of the same pole erection,which can improve the power supply reliability of the distribution network.