Analysis of Induced Voltage of Ground Wires in 1000kV transmission lines

CGW in China usually is generally insulated with one point grounded. OPGW is often grounded at each tower. When CGW and OPGW adopt the grounding method, the CGW induced voltage will be high, and OPGW will produce a large amount of energy loss, and cause abnormal heat to the ground wire and other disadvantages, these problems should be continuously concerned. There are many researches on overhead double circuit transmission lines in China, but few researches on single-circuit transmission lines. Therefore, it is significant to study different grounding model and segment length of single circuit transmission lines. The induced voltage under different grounding models are calculated by EMTP software, and study the influence of ground wire segmentation and ground wire transposition on ground wire induced voltage, which is of great significance to protect the ground wire insulators.