基于物联网的环网柜在线监测技术研究

Online monitoring technology of a ring network cabinet based on the internet of things

针对目前环网柜在线监测设备融合度较低导致运维复杂、整体成本较高的问题,研制了一种集成物联网传感器接入、机械特性在线监测、局部放电在线监测以及标准化通信接口的物联网环网柜监测终端。按照装置功能详细介绍了子模块的构成以及基于容器的软件架构。并重点介绍了机械特性在线监测相关的数据零漂调整、数据触发门槛选择、特征分析实现方法。同时介绍了一种用于局放采样的改进型峰值保持机制。为验证装置相关性能,搭建了试验平台,并模拟了部分典型机械特性故障。结果表明:监测数据准确且一致性高,能够满足现场的应用需求。

There are problems of complex operation and high overall cost caused by the low level of integration of current online monitoring equipment in a ring cabinet.Thus a monitoring terminal of the ring cabinet of the internet of things (IoT)is developed,integrated with micro-power sensor access,online monitoring of mechanical characteristics and of partial discharge and standardized communication interface.The structure of the sub-module and the software architecture based on the container architecture are introduced in detail,and the realization method of data zero drift adjustment,data trigger threshold selection and feature analysis related to the online monitoring of mechanical properties is emphasized.At the same time,an improved peak retention mechanism for local discharge sampling is introduced.In order to verify performance,an experimental platform is built and some typical mechanical characteristics faults are simulated.The results show that the monitoring data are accurate and consistent,and can meet the requirements of field applications.