单杆异步高压无线核相器设计与实现

为降低核相同步性要求，提高核相效率、安全性和可靠性，提出一种适用于跨电压等级非接触式单杆异步核相算法。利用平板电容型电场传感器电荷感应原理及波形变换与过零点检测相结合的方法，研制出一种高压无线核相器。分析了单杆异步核相原理，并对其进行误差修正。对不同电压等级输电线路及平板电容型电场传感器进行建模仿真，完成核相器软硬件功能和手机APP智能核相管理平台设计与调试，并在高压条件下进行核相试验。试验结果表明，在高压电场环境下，非接触式高压核相器可以实现单杆多点异步核相，核相结果稳定可靠。

Design and implementation of a single-rod asynchronous high voltage wireless phase detector

To reduce the requirement for synchronization and improve the efficiency, safety and reliability of phase detection, an algorithm suitable for different voltage levels is proposed. A high voltage wireless phase detector is developed based on the charge-sensing principle of the flat capacitive electric field sensor and the method of zero crossing detection and waveform transformation. The principle of single-rod asynchronous phase detection is analyzed and the error is corrected. Transmission lines with different voltage levels and flat capacitive electric field sensors are modeled and simulated. The method is designed and debugged successfully for the hardware and software functions of the phase detector and the intelligent phase detection management platform of a mobile APP. In addition, the phase detection test is carried out under high voltage conditions. The results show that the non-contact high voltage phase detector can realize the single-rod and multi-point asynchronous phase detection in an environment of a high voltage electric field, and the phase detection results are stable and reliable. This work is supported by the National Natural Science Foundation of China (No. 51577022).