大型地面光伏电站综合自动化系统设计与实现

Design and implementation of integrated automation system for large ground photovoltaic power station

大型地面光伏电站具有设备数量多、种类繁杂、组网复杂的特点,建立综合自动化系统难度较大。本文结合大型地面光伏电站组成结构与特点,分析了其综合自动化系统的功能需求,提出了一种基于分布式监控的设计与实现方案。该方案将综合自动化系统自下而上设计为子阵层、子阵环网层、间隔层、网络层与站控层,系统结构清晰,划分不同数据网,降低网络故障风险,有利于后期扩建,降低接入难度。分布式调节降低了AGC/AVC算法难度,提高了调节速度,缩短对电网调度调节指令的响应时间,有利于并网后电网系统的安全稳定运行。

Large ground photovoltaic power stations have the characteristics of large number of equipment,complex types and complex network construction,so it is difficult to establish comprehensive automation system.Combined with the structure and characteristics of large ground photovoltaic power station,the functional requirements of the integrated automation system are analyzed,and a design and implementation scheme based on distributed monitoring is proposed.The integrated automation system will be designed from bottom to top layer,by submatrix ring network layer,spacer layer,network layer and station control layer.The system structure is clear,favorable for expansion,and ease of integration.The risk of network fault is reduced by dividing different data network.Distributed regulation reduces the difficulty of AGC/AVC algorithm,improves the speed of regulation,and shortens the response time,which is conducive to the safe and stable operation of the power grid system after grid-connection.