高压电能计量故障检测电路设计  

Design of Fault Detecting Circuits for High Voltage Electric Power Metering System

作　　者：赵建军[1] 梁威[1] 张月阳[1] 

机构地区：[1]河南大学先进控制与智能信息处理研究所,河南开封475004

出　　处：《河南大学学报（自然科学版）》2014年第1期25-29,共5页Journal of Henan University:Natural Science

基　　金：国家自然科学基金资助项目(61174112)

摘　　要：根据高压电能计量系统故障特点,设计了四组八路故障检测电路.通过分析系统故障,选取检测点.针对电能表端口电压信号微弱,不易检测的问题,在电能表端口处增加了前置放大器以提高检测信号的信噪比.基于计量系统阻抗检测模型,对测量互感器进行了大量试验,确定并优化检测电路参数,提高了系统对电流互感器一次侧短路故障的检测能力.实际应用表明电路能有效地提供故障检测数据.According to the fault characteristics of high voltage electric power metering system, we design eight-way detection circuits. With the analysis of system fault we choose detection points. In view of weak voltage signal of port of electric energy meter and difficulty in detection, we add a preamplifier to the port of electric energy meter to improve signal- to-noise ratio of detection signal. On the basis of impedance detection model for high voltage electric power metering system, we carry out a lot of experiments on the measurement transformer to determine and optimize parameters, and improve the ability of the system to detect short circuit fault of the primary side of circuit transformer. The practical application shows that circuits can effectively provide data for fault detection.

关 键 词：高压电力计量系统 故障检测 电路设计 故障分析 

分 类 号：TP206.3[自动化与计算机技术—检测技术与自动化装置]