适用于避雷器阻性电流测量的异构网络应用

Heterogeneous Network Application in Resistive Current Measurement for Arrester

金属氧化物避雷器(MOA)在长期运行过程中受环境的影响会出现老化、绝缘性变差等问题,可通过测量其阻性电流的大小及变化趋势来评估避雷器运行状况。MOA测量常采用有线方式,操作繁冗,无线测量方法则存在系统运行不稳定、同步性差等问题。本文基于由Lo Ra无线网络和高空速无线个域网所组成的异构网络,提出了一种新型的MOA阻性电流同步测量系统,实现了由测量终端、异构网络网关机、IED和手持设备构成的树状异构网络测量系统对MOA工作状态有效检测。该系统可以通过配置不同读取设备而构成在线监测和带电检测两种工作方式。通过现场测试数据验证了该MOA阻性电流测量系统具有测量精度高、抗干扰能力强、同步性好等优点,对电网的安全稳定运行具有重要意义。

Metal oxide arrester（MOA）suffers from aging and poor insulation due to the environmen-tal impact,and the value and variation tendency of resistive current can reflect the health conditions ofMOA. MOA detection often used cumbersome cable mode,or wireless measurement methods are facingthe problems of poor data synchronization and instability. Therefore a novel synchronous measurementsystem of arrester current resistive based on heterogeneous network combined Lo Ra wireless network,high speed wireless private area network is proposed. This system and realized the detection of arresterworking condition by the tree heterogeneous network measurement system which was composed of measur-ing terminal,heterogeneous network gateway,IED and handheld device. The system can be configuredby different data read devices constitute on-line monitoring and live detection of two kinds of work. Fieldtest data shows that the MOA resistive current measurement system has the characteristics of high accura-cy,strong anti-interference ability and good synchronization,which plays an important role in ensuringthe stable operation of the power grid.