主动配电网实时经济分配的一致性协同控制策略研究

Consensus-based collaborative control strategy of real-time economic dispatch in active distribution network

针对主动配电网中大规模光伏发电机、风力发电机等分布式电源以及大容量储能系统接入后的经济运行问题,同时为了提高配电网控制系统的实时性、鲁棒性与可扩展性,对主动配电网多电源接入后负荷的实时经济分配问题进行了研究,提出了一种一致性协同控制策略。该协同控制策略采用一致性算法,在各个电源点只得到自身控制器信息以及部分相邻电源控制器信息的情况下实现了自治控制,并最终使整个系统逐渐趋向于最优经济运行点。研究结果表明,所提实时经济分配的一致性协同控制策略能够有效地实现负荷有功功率在各个电源点之间的实时经济最优分配,同时能够处理峰谷电价、新能源出力波动、负荷波动等不同运行工况。

Aiming at solving the economic operation problem when large scale of distributed energy resources （ such as photovoltaic, wind power and energy storage） integrated into distribution network and to improve the real-time ability, robustness and flexible scalability of the control strategy, a distributed consensus-based collaborative control strategy was proposed. The power sources were controlled in a distributed way. The optimal operation point was realized in the condition that each power source could only collect information from its own and its neighbors. The results indicate that the proposed strategy is effect in real-time economic dispatch in cases of peak-valley price, intermittency of the renewable energy and power fluctuation of the load.