35kV高压验电器的数显改进与开发

Digital-Displayed Improvement and Exploitation of 35kV High-Voltage Electroscope

分析了电容式声光型高压验电器的工作原理,针对现有高压验电器在强日光及强噪声环境下抗干扰能力差的缺点提出了三种数显改进设计方案,并对各方案的安全性能、实现可能性以及经济性能进行了比较,最后采用分压式改进设计方案完成35kV高压验电器的数显改造。仿真结果与实验数据表明,提出的35kV高压验电器数显系统改进方案可行,并具有一定精度,有很大的实现可能性,完全可以满足工程验电的数显应用要求。

The working principle of the capacitive high-voltage electroscope, which shows warning by noise and light-emitting was analyzed. Aiming at the poor anti-interference characteristic of the existing high-voltage electroscope under the circumstances of strong sunshine and noise, three improved digital-displayed schemes were put forward, and their safety performance, implementation possibility and economic performance were compared. The improved voltage-grading scheme was adopted to improve the 35 kV high-voltage electroscope to gain a digital-displayed function. The simulation results and the experimental verification show that the presented highvoltage electroscope system is feasible with certain accuracy and easy to realize, fully meeting the digital-displayed needs of engineering voltage-verification in applications.