Abstract：In PoE mode, power quality monitoring equipments are PD equipments, which are based on 100M Base-T network. The power supply and communication of them are multiplexed in one network, which form distributed power monitoring system. All electrical energy quality devices have data acquisition function and remote device control function. They collect data and send to data center via network. In the data center, all the data are analysed and displayed by server. At the same time, background software sends command and data packets to terminal monitoring devices through the network, to realize the control of PQ devices.
作者简介: 李受明（1981-）,男,江苏省南通市人,硕士,工程师,主要从事电能质量监控设备研发工作。 PoE（Power over Ethernet）指的是：在现有以太网Cat.5布线基础架构不作任何改动的情况下,在为一些基于IP的终端（如IP电话机、无线局域网接入点AP、网络摄像机等）传输数据信号的同时,还能为此类设备提供直流供电的技术。PoE技术能在确保现有结构化布线安全的同时保证现有网络的正常运作,最大限度地降低系统构建成本。目前的PoE标准是IEEE 802.3at/f。标准中,PoE有两种连接方式：中间跨接法（Mid-Span）和末端跨接法（End-Span）。本文基于100M BASE-T场景,给出采用RJ45空闲引脚对供电的连接方式如图2所示。
引用本文:
李受明, 侯勇. 集中运算模式下基于PoE的电能质量监控系统[J]. 电气技术, 2016, 17(11): 115-117.
Li Shouming, Hou Yong. Power Quality Monitoring System based on PoE in Centralized Computing Mode. Electrical Engineering, 2016, 17(11): 115-117.
2016, Vol. 17 
