摘要
针对太阳能与市电并网发电过程中会产生逆功率的问题,在现有理论研究基础上,展望性地提出了基于电力系统暂态过程理论和电力系统暂态保护理论的负载特征波逆功率检测与控制方法,即通过采样处理系统捕捉电网中负载突然变动产生的暂态特征波,根据特征波携带的特性进行逆功率检测;结合共网逆变控制装置进行逆功率的控制。并拟应用于光伏微电网系统,实现一个工频周期内的逆功率检测与控制,从根本上避免逆功率的产生,实现设备级本质安全零逆流。
Given the problem that reverse power can be produced in the process of the Grid-connected Photovoltaic System,a new idea,characteristic wave detection and control was suggested,using the power system transient process theory and power system transient protection theory.Namely,the transient wave can be captured when some loads change its current situation.By using its characteristics,the detection and control function can be achieved.The method can be applied into the area of small Grid-connected Photovoltaic System in order to avoid the problem of the reverse power and protect all the equipments in the area.
出处
《计算机仿真》
CSCD
北大核心
2012年第3期37-39,131,共4页
Computer Simulation
关键词
光伏系统
逆功率
特征波
Photovoltaic system
Inverse power
Characteristic wave
