光伏发电并网系统双向电能表的设计

摘要

太阳能光伏发电作为一种零排放、零污染的可再生能源，已经受到世界各国的关注和青睐。为了满足小型光伏发电系统并网测试记录双向电能的需求，本文基于Cirrus Logic公司的电能计量芯片CS 5463与宏晶科技公司的STC12C5A60S2芯片，完成了并网双向测试电表的设计和性能测量，并对并网过程中相关参数进行了理论分析和计算，达到了实时判别光伏发电和电网供电方向和分别记录各自所供电能的目标，实现了光伏发电并网的计量需要。%With the shortage of fossil energy ,solar photovoltaic power generation has become the world ’s attention and favor as a zero-emissions ,zero pollution ,renewable energy .To satisfy the needs of bi-direction-al power measure of the grid-connected PV system ,a bi-directional kWh meter based on CS 5463 power and STC12C5A60S2 microprocessor is presented in this paper .The bi-directional kWh meter accurately measures and calculates the bi-directional electrical power between grid and the grid-connected photovoltaic system . Through theoretical analysis and calculation of the apparent power ,active power ,reactive power and other parameters ,the purpose of real-time energy direction discrimination bi-directional energy recording is achieved very w ell .