基于电力线载波通信技术的微型逆变器监控系统设计研究

Micro-inverters Monitoring and Control System Based on the Power Line Carrier Communication

基于低压窄带电力线载波通信技术对微型逆变器监控系统进行设计,该系统由监控中心、电网电压采集终端和微型逆变器采集控制终端三部分组成,主要对载波通信采集模块、继电器控制模块及监控软件进行设计开发.实验搭建的监控系统实现了对微型逆变器运行参数实时监控、单体光伏组件故障检测以及电量过剩检测等功能,通过由监控中心控制的继电器来控制微型逆变器工作状态,有效避免光伏发电系统对电网质量的影响.

A micro-inverters monitoring and control system based on the low voltage powerqine communication（PLC） technology was designed in this paper,which consisted of monitoring central,power grid voltage collecting terminal and micro-inverter acquisition and control terminals. The design of the PLC collecting module,relay control module and monitoring software were de- scribed in this paper. The monitoring and control system had three functions which are monitoring operating parameters on micro inverter,testing the single photovoltaic module fault and excess power generation, the monitoring central controlled connection or disconnection of each micro-inverter to the grid which effectively prevent negative effect to the power grid quality caused by the connected PV system.