When one circuit of transmission line operates and the other circuit of transmission line stops

large induced voltage and induced current may be generated on the shutdown line

which has certain potential safety hazards for operators and equipment. In order to study the induced voltage and induced current under different operating conditions

a simulation model of 500 kV double circuit overhead transmission line on the same tower is established by using ATP EMPT software. Then

the effects of line length

transmission power

operating voltage and soil resistivity on induced voltage and induced current are calculated and analyzed by the model. Finally

the hybrid differential evolution particle swarm optimization algorithm is used to fit the formula of induced voltage and induced current. The results show that: the line length has a great influence on the electromagnetic induced voltage

electrostatic induced current and electromagnetic induced current. The transmission power has a significant effect on electromagnetic induced voltage and electromagnetic induced current. The operating voltage has an effect on the induced voltage and induced current

almost in direct proportion. Soil resistivity has a certain effect on electromagnetic induced voltage and electromagnetic induced current. Through multi variable fitting analysis

the functional relationship between the above influencing factors and induced voltage and induced current is obtained

which provides a reference for the estimation of induced voltage and current in subsequent projects.