Overhead ground lines

which do not undertake the task of electrical energy transmission

face more serious ice-covering problems. In order to apply the electric pulse de-icing technology to linear structures such as overhead ground lines and to further enhance the effectiveness of this technology

this paper investigates the main factors affecting the effect of pulse action

including the coil structure

the spacing between the coil and the multiplier

and the stroke length of the multiplier. Firstly

this paper proposes to indirectly characterize the de-icing performance of the impulse force de-icers by impulse and energy

and uses the impact pendulum experiment to measure the impulse and energy generated by a single electric pulse under different parameters

and the results show that a coil of 4×0.4 mm can generate larger impulse and energy

and the impulse and energy can be further enhanced by reducing the spacing between the coil and the multiplier and increasing the stroke length of the multiplier. Secondly

based on the insulation and waterproof requirements in practical applications

the parameters of the impulse force de-icer for linear structures were optimized

using epoxy resin glue to fix the coil in the coil groove

using insulating paper to insulate the coil from the multiplier

and making a guiding-notch on the multiplier reserved for the spacer. Finally

the simulated ground de-icing test in the multifunctional artificial climate laboratory shows that the parameter-optimised de-icer is able to effectively remove the ice cover under different icing conditions

with the maximum de-icing distance reaching 2.7 m for mixed freezing water

and 1.5 m for rain freezing water. In addition

the de-icing distance of the de-icer after parameter optimisation can reach 3.5 m on the natural icing test platform

it's about 45.8% more than that before optimisation

and further verifies the actual de-icing effect of the optimised de-icer. These research results can provide new theoretical basis and practical reference for the de-icing technology of ground lines and other linear structures.