Study on Distribution Characteristics of Induced Voltage and Current on Optical Fiber Composite Ground Wire of Distribution Line

Abstract

The OPGW of the distribution line combines communication and lightning protection. During the electromagnetic coupling process among power distribution lines, induced voltage and induced current will be generated on OPGW. This threatens the safety of power operation and maintenance personnel. This paper uses the ATP-EMTP software to build the electromagnetic coupling model of a 10kV single-loop distribution line with the OPGW. Factors including OPGW grounding mode, OPGW grounding resistance, OPGW relative position, and line load are considered, and the influence of different factors on the induced voltage and current on the OPGW of the distribution line is compared and analyzed in detail. The simulation results show that the ground resistance and relative position have little effect on the induced voltage and induced current of the OPGW. Grounding mode and line load greatly influence the induced voltage and induced current of the OPGW. The simulation conclusion provides a certain theoretical basis for selecting the parameters of OPGW of a 10kV single-circuit distribution line.