中继式传能绝缘子温度特性研究

磁谐振耦合式无线电能传输线圈嵌附在绝缘子上可为输电线路监控系统供电。这是一种可应用于电力系统的新型供电方式。在具有无线电能传输能力的绝缘子（传能绝缘子）长期运行过程中产生的温度升高现象影响着电力系统的安全运行。针对传能绝缘子的温升问题，文章讨论了中继式磁耦合谐振式无线能量传输（MCR-WPT）系统电能传输特性；利用多物理场计算软件，研究了传能绝缘子的电能传输效率及传能绝缘子在不同电输入功率和不同气象环境中的温度变化特性。仿真结果表明，在环境1和环境2中，系统的电输入功率可达到30 W，传能绝缘子传输性能仍保持在65%左右。实验结果表明:实验结果和仿真结果基本一致；实验温度为25.2 ℃、输出功率为6.5 W时，传能绝缘子连续运行25 min，表面最高温度升高约3 ℃。

Research on Temperature Characteristics of the Relay Energy-Transmitting Insulator

A new type of power supply appeared in the power monitoring systems, which attach a magnetically coupled resonant wireless power transmission (MCR-WPT) coil on an insulator to supply power. The working insulator with MCR-WPT (energy-transmitting insulator) will cause temperature rising, and the excessive temperature will affect the safe operation of the power system seriously. Aiming at the temperature rise of the energy-transmitting insulator, the energy transmission characteristics of the energy-transmitting insulator and its temperature change characteristics are analyzed under different electrical input power and meteorological environments by using multiphysics calculation software in the article. The research result shows that: in environment 1 or environment 2, when the system's electrical input power reaches 30 W, the energy transfer insulator transmission performance still remains at around 65%.The experimental result shows that the simulation and experimental values are basically consistent, and when the experimental environment is 25.2 ℃, and output power is 6.5 W, the energy-transmitting insulator is continuously operated for 25 minutes, and the maximum surface temperature is increased by about 3 ℃.