CAJ | 학술논문

输电线路架空地线逐基接地时存在感应电流和电能损耗，目前对架空地线感应电流数值大小和影响机制的研究较少，对架空地线损耗问题重视不足。以某双回线路为例进行了架空地线感应电流现场实测和 ATP-EMTP 数值计算，计算了不同线路长度、档距、导地线型号、导地线空间布置等输电线路结构参数对架空地线感应电流和电能损耗的影响。计算结果表明：线路起始段（长度小于9 km）时架空地线感应电流随着线路长度增大而增大；不同档距和导线型号通过导线弧垂变化影响架空地线感应电流和电能损耗；地线感应电流和电能损耗随着导地线空间距离增大而减小，随导地线高度变化明显，导线相间距和地线间距影响小。
수전선로가공지선축기접지시존재감응전류화전능손모，목전대가공지선감응전류수치대소화영향궤제적연구교소，대가공지선손모문제중시불족。이모쌍회선로위례진행료가공지선감응전류현장실측화 ATP-EMTP 수치계산，계산료불동선로장도、당거、도지선형호、도지선공간포치등수전선로결구삼수대가공지선감응전류화전능손모적영향。계산결과표명：선로기시단（장도소우9 km）시가공지선감응전류수착선로장도증대이증대；불동당거화도선형호통과도선호수변화영향가공지선감응전류화전능손모；지선감응전류화전능손모수착도지선공간거리증대이감소，수도지선고도변화명현，도선상간거화지선간거영향소。
Induced current and energy loss characteristics and influencing mechanismof overhead ground wires grounded at each tower are lack of research. Induced current of overhead ground wires in a double-circuit transmission line is measured and calculated with ATP-EMTP. Furthermore, the influence of length of transmission line, spans, type of conductor wires and ground wires and space location of conductor wires and ground wires on induced current and energy loss is carried out. It shows that induced current increases with length of transmission line which is less than 9 km. Different spans and types of conductor wires resort to the sag to change induced current and energy loss. The more distance of conductor wires and ground wires is, the less induced current and energy loss are, which is apparently changed with average height of conductor wires and ground wires but affected little by distance of phase wires or ground wires.