中文摘要：

针对交直流混合电网传统集中控制缺乏灵活性和鲁棒性的特点,以及分布式控制无法同时兼顾全局最优及响应速度等的不足,提出一种基于多智能体系统的交直流混合电网自律分散控制策略,即在多端直流的每个端子都设置一个智能体,构成多智能体系统,每个智能体都包含两个功能模块：全局信息获取模块和自主决策模块。采用这种控制策略时,上层优化问题与传统的电网调度问题相近,下层系统通过智能体之间以及智能体与系统间的交互、协调,实现群体妥协解。在仅有邻居换流站电压、频率等状态信息基础上,基于多智能体一致性控制实现各端换流站间有功功率的合理分配,平抑负荷波动。最后通过PSCAD仿真搭建典型的交直流混合电网验证所提控制策略的有效性及优越性。

英文摘要：

As traditional centralized control lacks of flexibility and robustness, while distributed control cannot take into account global optimum and response speed simultaneously in hybrid AC/DC grid, a scheme of decentralized autonomous control for hybrid AC/DC grid is proposed with each terminal equipped with an agent to constitute a multi-agent system, and each agent contains two function modules： global information acquisition and autonomous decision-making modules. For this control method, optimization of upper layer is similar to traditional grid dispatch, and lower layer system achieves group compromise through interaction and coordination among the agents and between the agents and the system. Based on state information such as voltage and frequency of neighboring converter stations, equitable distribution of active power between converter stations is achieved through consensus control of multi-agent system and load fluctuation is stabilized. Finally, a typical hybrid AC/DC grid is built with PSCAD to verify validity and superiority of the proposed control strategy.