分布式XLPE电缆局部放电在线监测系统的研制

Development of a Distributed On-line Monitoring System for Partial Discharging of XLPE Cable

设计并研制了一套分布式XLPE电缆局部放电在线监测系统,基于电磁波耦合法,采用多个检测前端加信号集中单元的分布式结构,多个检测前端之间可根据需要灵活连接组合,可用于多种电缆运行的场合,大幅扩展了系统的监测范围,提高了系统的可靠性及经济性。阐述了系统各硬件部分工作原理及主要设计指标参数,给出了监测系统软件的功能架构及运行界面。系统运行稳定可靠,可满足多种环境下电缆局放检测的需要。

This paper designs and develops a distributed on-line monitoring system for partial discharging of XLPE cable,which,based on the electromagnetic coupling method,adopts a distributed structure with multiple detection front-ends and single signal concentration unit. The multiple detection front-ends can be connected flexibly with each other as required. Its applications in the operation of different kinds of cables greatly extend its monitoring range and improve its reliability and economical efficiency. This paper describes the working principle and main design parameters of its hardware and displays the functional structure and operational interface of the system software. The system can operate stably and reliably and can meet the requirements on detection of cable partial discharging under different circumstances.