摘要
针对光伏逆变器常用的集中式控制系统,存在信号处理过于集中、强弱电信号不易分离、弱电信号易受干扰等缺点,设计了一种模块化的分布式控制系统,并应用于光伏逆变器。详细介绍了控制系统的构架和控制流程,各分布式单元的功能与光纤通信机制;主电路系统和控制策略。逆变器在光伏电站进行了长期运行试验,验证了其性能与可靠性,给出了并网运行波形。
In view of disadvantages of centralized control systems commonly used for the photovoltaic control system such as over-centralized signal processing, difficult separation of light-current signal from heavy-current signal and high interference susceptibility of light- current signal, this paper presents a modular distributed control system applied in a photovohaic inverter. It introduces details on the framework and control process of the control system, functions and optical fiber communication of every distributed unit, main circuit system and its control strategy. The long time operational test at the photovoltaic power station verifies the performance and reliability of the inverter. Grid connection waveforms are given.
出处
《电气自动化》
2014年第4期41-42,73,共3页
Electrical Automation
关键词
光伏逆变器
分布式
光纤通信
双环控制
抗干扰设计
photovohaic inverter
distributed control system
optical fiber communication
dual-loop control
anti-interference design
