Study on Design and Optimal Control of Long-distance Wireless Power Supply System Based on High-Voltage Lines

A long-distance wireless power supply system based on high-voltage lines is studied and designed in this paper. Based on the operating environment of the 500-kV high-voltage transmission line and the operating conditions of the monitoring equipment, combined with the working characteristics of the resonant structure, LCC-S is selected as the resonant topology. The influence of the coil radius and the number of turns on the transmission power and transmission efficiency i s a nalyzed by the method of simulation calculation. Considering the limitation of the resonant coil's turn-to-turn voltage on the system, the radius of the transmitting coil and the receiving coil are selected as 0.5m and 0.6m, the number of coil turns is 45 turns. The simulation results show that when the system is working with the above parameters, the load power of the system is 39.4W, and the transmission efficiency i s 5 9.4 %. Experimental results show that the wireless power supply system designed in this paper can operate stably under high-voltage line conditions.