基于非线性多智能体系统的微网分布式功率控制方法  

Distributed Power Control Method of Microgrid Based on Nonlinear Multi-agent System

作　　者：李鹏[1] 王旭斌[1] 马剑[1] 

机构地区：[1]新能源电力系统国家重点实验室(华北电力大学),河北省保定市071003

出　　处：《中国电机工程学报》2014年第25期4277-4286,共10页Proceedings of the CSEE

基　　金：国家自然科学基金项目(50977029);河北省自然科学基金项目(E2013502074)~~

摘　　要：传统下垂控制方法存在难以使微网负荷功率按照分布式电源容量合理分配的问题,为此在分析功率分配机理基础上,针对含多个分布式电源的微网,提出一种基于非线性多智能体系统的分布式功率控制方法。该方法在不影响有功功率分配精度前提下,通过引入有功扰动项使负荷无功功率可按照分布式电源容量实现精确分配。同时,为保证系统输出频率和电压均稳定在额定值或偏移很小,基于一致性和输入/输出线性化理论,在分布式电源多智能体网络拓扑结构下设计分布式非线性协同下垂控制器,弥补有功扰动引起的系统频率和电压的波动。仿真实验结果验证了所提控制方法的正确性和可行性。The ideal load sharing cannot be achieved accurately in proportion to distributed generation （DG） power ratings when the conventional droop control scheme is adopted. On the basis of the power distribution mechanism, and for an autonomous microgrid with multiple distributed generation units, this paper proposed a distributed power control method based on nonlinear multi-agent system （MAS）. With the prerequisite that the precision of real. power sharing is not affected, the proposed control method achieves accurate proportional load sharing, which introduces real power disturbances. In order to ensure that system output frequency and voltage can be maintained within the desired range around the rated value, an improved power droop controller based on consensus and input-output linearization theory is proposed under network topology of DG agents, which can compensate the fluctuations of system frequency and voltage caused by real power disturbances. Simulation results are presented to validate the correctness and feasibility of the proposed control method.

关 键 词：微网 分布式电源 多智能体系统 分布式控制 非线性协同控制 

分 类 号：TM71[电气工程—电力系统及自动化]