孤岛微电网分布式电压不平衡补偿控制策略
发布时间：2019-02-12 15:53
【摘要】：针对不平衡负载、故障等引起的微电网公共连接点电压不平衡问题,提出了一种基于多代理系统的分布式协调电压不平衡补偿控制策略。将微电网各分布式电源等效为多代理系统中的代理,利用领导节点产生只有少数代理能够接收的补偿信号参考,公共连接点电压不平衡补偿等效为各代理节点向领导节点同步的追踪同步问题。利用线性状态反馈设计了分布式控制率。该控制策略基于一个单向通信的有向通信网络,各代理只需处理本地及相邻代理信息。该控制策略避免了对集中控制器的依赖,提高了系统的可靠性。利用一个微电网测试系统对所提控制策略进行了验证,仿真结果表明所提控制策略能够有效抑制公共连接点电压不平衡度。
[Abstract]:A distributed coordinated voltage compensation control strategy based on multi-agent system is proposed to solve the problem of common connection voltage imbalance in micro-grid caused by unbalanced load and fault. The distributed power generation in microgrid is equivalent to the agent in the multi-agent system, and the leading node is used to generate the reference of the compensation signal that only a few agents can receive. The common connection point voltage imbalance compensation is equivalent to the tracking synchronization problem in which each agent node synchronizes to the leading node. The distributed control rate is designed by linear state feedback. The control strategy is based on a one-way communication directed communication network. Each agent only needs to deal with local and adjacent agent information. The control strategy avoids the dependence on the centralized controller and improves the reliability of the system. The proposed control strategy is verified by a microgrid test system. The simulation results show that the proposed control strategy can effectively suppress the voltage imbalance at common connection points.
【作者单位】： 新能源电力系统国家重点实验室(华北电力大学);
[Abstract]:A distributed coordinated voltage compensation control strategy based on multi-agent system is proposed to solve the problem of common connection voltage imbalance in micro-grid caused by unbalanced load and fault. The distributed power generation in microgrid is equivalent to the agent in the multi-agent system, and the leading node is used to generate the reference of the compensation signal that only a few agents can receive. The common connection point voltage imbalance compensation is equivalent to the tracking synchronization problem in which each agent node synchronizes to the leading node. The distributed control rate is designed by linear state feedback. The control strategy is based on a one-way communication directed communication network. Each agent only needs to deal with local and adjacent agent information. The control strategy avoids the dependence on the centralized controller and improves the reliability of the system. The proposed control strategy is verified by a microgrid test system. The simulation results show that the proposed control strategy can effectively suppress the voltage imbalance at common connection points.
【作者单位】： 新能源电力系统国家重点实验室(华北电力大学);
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