从理论上分析论证了单导线（不利用大地）输电系统的工作原理，并用模拟实验验证了其工作原理。模拟实验证明，可以用位移电流沿单导线线路向负载输送有功功率，传输效率高达９８％以上。单导线线路可以采用非金属导电介质。还提出了用位移电流极化分量从无功功率获得热量的方法。 The working principle of a single-conductor (non-earth-based) transmission system is theoretically analyzed and demonstrated, and its working principle is verified by simulation experiments. Simulation experiments show that the displacement current can be used to deliver active power to the load along a single conductor line, and the transmission efficiency is as high as 98%. Single-conductor lines can use non-metallic conductive media. A method of obtaining the heat from the reactive power using the displacement current polarization component is also proposed.