基于射级跟随的高压验电的实现

Realization of High-voltage Electricity Test Based on Emitter Follower

户外架空线路带电信息的检测具有重要的现实意义。在介绍传统高压带电指示装置验电电路结构及优缺点的基础上,提出了基于射级跟随器的高压验电技术,电路以三极管、电阻和电容构成的射级跟随器为核心,辅以简单的驱动电路即可实现验电的目的,具有硬件结构简单、成本低、易实现和抗干扰能力强的特点。经PSPICE仿真和试验验证,电路具备良好的性能,可应用于户外架空线路的验电。

The detection of live information on outdoor overhead lines has important practical significance.After an introduction of the structure as well as advantages and disadvantages of the electricity testing circuit of the traditional high-voltage live indicator,a high-voltage electricity test technology based on the emitter follower was proposed.Using an emitter follower composed of triodes,resistors and capacitors as its core,this circuit could achieve the purpose of electricity inspection with the help of a simple drive circuit.The circuit was characterized by simple hardware structure,low cost,easy implementation and strong anti-interference ability.PSPICE simulation and experimental verification showed that the proposed circuit had good performance and could be applied to the electricity test on outdoor overhead lines.