Calculation and Measurement Methods for Induced Voltage and Induced Current of Insulated OPGW

By using analytical calculation and on-site measurement methods, the induced voltage and induced current of overhead ground wires were studied. Combined with theoretical derivation, an algorithm model was constructed. The induced voltage and induced current were directly derived through analytical methods, and the operation of the line ground wires was calculated. At the same time, the loss parameters of typical 220kV overhead ground wires in Hebei power grid were measured, including the induced voltage and induced current of the ground wires, and the grounding current of the towers along the line. Finally, the effectiveness of the model proposed in this paper was verified through case analysis. The research results indicate that the analytical results of the model are basically consistent with the measured results, and this analytical model is feasible for studying the loss characteristics of overhead ground wires; When overhead ground wires are grounded tower by tower, there is a significant loss of electrical energy; The magnitude of electrical energy loss of overhead ground wire is related to the grounding method of the two ground wires, line operation, and structural parameters.