To solve the problem of the energy harvesting (EEH) effect of the condition monitoring devices power supply on the transmission line is not ideal. The authors designed three kinds of EEH schemes based on AC electric field induction, which can effectively improve the output power of load power supply. The EEH principle of each scheme was analysed in detail, and the influence factors such as the shape of outer energy harvester, capacitance compensation and impedance matching characteristics were analysed. Finally, the experiment showed that 140.9 mW of power was obtained in direct-mode field EEH when the line voltage level was 10 kV. The high-potential field EEH mode obtained 4.1 mW of power. The harvesting effect of the inner energy harvester with the same potential as the aluminium wire was obviously better, and 30.7 mW of power was obtained. Finally, based on the third mode, when the load resistance was 2200 Ω, the rectifier received 23.7 mW DC output. The experimental results are in agreement with the theoretical analysis, which verifies the effectiveness of the electric field induction power supply technology.

中文翻译：

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基于电场感应的交流架空绝缘输电线路能量收集技术

解决输电线路上状态监测装置电源的能量收集（EEH）效果不理想的问题。作者设计了三种基于交流电场感应的EEH方案，可以有效提高负载电源的输出功率。详细分析了各方案的EEH原理，并分析了外部能量收集器的形状、电容补偿和阻抗匹配特性等影响因素。最后，实验表明，当线路电压电平为10 kV时，直模场EEH获得了140.9 mW的功率。高电位场EEH模式获得4.1 mW的功率。与铝线同电位的内部能量收集器的收集效果明显更好，获得了30.7 mW的功率。最后，基于第三种模式，当负载电阻为2200Ω时，整流器获得23.7mW的直流输出。实验结果与理论分析相符，验证了电场感应供电技术的有效性。