摘要
在孤岛运行的微电网中,由于各分布式电源到公共母线的距离和网络结构差异,导致采用传统下垂控制的分布式电源难以按其额定容量分担负荷。为此,提出一种基于多智能体一致性的分布式无功功率控制策略,各分布式电源通过通信网络,接收邻近微电源无功功率。应用动态一致性算法对无功功率差值进行迭代求和,再利用比例-积分器对下垂特性曲线的参考额定电压幅值进行自适应补偿。该策略在实现无功功率合理分配的同时,降低了系统对通信线路的要求,提高了系统的可靠性。
Due to the distance of each DG unit to the public bus and the difference of network structure, it is difficult for the traditional droop control of distributed power supply to share the load according to its rated capacity in a microgrid running on an island. Therefore, a distributed control strategy for microgrid based on the consensus of multi-agent system is proposed, which adopts the one-way communication links to realize the reactive-power exchange between adjacent micro-sources. The dynamic consistency algorithm is used to iteratively sum the reactive power difference, and then the proportional integrator is used to compensate the reference voltage amplitude of the droop characteristic curve. This strategy not only realizes the reasonable distribution of reactive power, but also reduces the requirement of communication line and improves the reliability of the system.
作者
王岳
杨国华
董晓宁
邹玙琦
李志明
WANG Yue;YANG Guohua;DONG Xiaoning;ZOU Yuqi;LI Zhiming(Department of Electrical Engineering and Automation, Ningxia University, Yinchuan 750021, China;Ningxia Key Laboratory of Power and Energy Security, Yinchuan 750021, China)
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2019年第17期54-60,共7页
Power System Protection and Control
基金
国家自然科学基金项目资助(71263043,61763040)
宁夏自治区自然科学基金项目资助(NZ17022)
宁夏自治区重点研发项目资助(2018BFH03004)~~
关键词
下垂控制
一致性算法
分布式控制
电压补偿
无功功率分配
droop control
consistency algorithm
distributed control
voltage compensation
distribution of reactive power
