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In this paper, a new non-uniform multiconductor transmission line model combining with lumped circuit elements for a composite transmission line (TL) tower under lightning strokes is established. The metal ground-wire cross arms, the metal tower main body and its bracings are modeled as equivalent horizontal and vertical TLs, respectively. The two grounding ladders are regarded as two parallel–vertical...
In this paper, the surge voltages of grounding system for a 330 kV high voltage (HV) composite transmission tower under lightning strokes are comprehensively presented. An equivalent distributed parameter model of the tower is established to investigate the lightning overvoltage by using EMTP program. The distributed capacitances among the adjacent two layers of cross arms, the capacitances between...
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