含多种形式能源发电的微网状态转换协调控制策略  

A coordinated state transition control strategy for microgrid with multi-energy generation systems

作　　者：周念成[1] 胡斌[1] 王强钢[1] 池源[1] 徐韬 

机构地区：[1]重庆大学输配电装备及系统安全与新技术国家重点实验室,重庆400044 [2]重庆市轨道交通集团有限公司,重庆400042

出　　处：《重庆大学学报（自然科学版）》2012年第9期61-69,共9页Journal of Chongqing University

基　　金：重庆市自然科学基金资助项目(CSTC2009BB6190);输配电装备及系统安全与新技术国家重点实验室自主研究项目(2007DA10512709208)

摘　　要：针对包含多种连续性和间歇性DG、储能装置以及敏感负荷的微网,提出了一种基于状态转换的协调控制策略。以微网中允许出现的有效运行状态为基础,通过将微网当前运行状态和触发事件作为中央控制器的输入变量,各可控元件的控制方式作为输出变量,制定微网运行状态转换方案。为保证敏感负荷的可靠供电,考虑微网所有运行状态下系统频率无差调节和储能装置的容量限制,提出了笔者定义运行状态下各元件相应的控制方式和状态转换触发事件。利用PSCAD/EMTDC软件仿真分析了3种典型的运行状态转换过程,结果表明所提协调控制策略能够保证本地敏感负荷不间断供电,实现了微网状态之间的平滑转换和频率无差调节。A coordinated control strategy is proposed based on state transition for a microgrid containing continuous or intermittent DG, energy storage device and sensitive loads. According to the available operation states, a scheme of operation state transition is established through setting the current operation state and trigger event as inputs of MGCC and regarding the control modes of components as outputs. By considering the no deviation control for frequency and the capacity limitation of energy storage device under all operation states, control modes of components and trigger events of state transition under all defined states are designed respectively for a reliable power supply of sensitive load. The PSCAD/EMTDC simulation software is used for analysis of the three typical transition processes of operation states. The results show that the proposed coordinated control strategy is effective for a safe and reliable power supply to the sensitive loads and ensures a smoothing transition between operation states of microgrid as well as the no deviation control of system frequency.

关 键 词：微网 分布式电源 状态转换 敏感负荷 频率无差调节 

分 类 号：TM761[电气工程—电力系统及自动化]