Research on Flexible Ultra-high Frequency Sensing Technology for GIS Discharge Based on Particle Swarm and Genetic Algorithm

Gas-insulated switchgear (GIS) may be affected by mechanical stress, temperature fluctuations and other factors during operation, which may lead to insulation defects and partial discharges or even breakdowns. In this paper, the fractal antenna is designed based on Sierpinski curve, and the optimized antenna is designed by particle swarm algorithm and genetic algorithm. Research and analysis shows that: the average return loss of the optimized antenna is -12.327dB, the average VSWR is 1.644, and the optimal main direction gain is -12.114dB at 3.0GHz; the maximum fluctuation of the VSWR is 3.78% after bending at 400mm bending radius, the average fluctuation is 1.66%, and the optimal frequency gain is 0.066dB, and the antenna meets the design requirements and has good performance. The antenna meets the design requirements and has good performance.