考虑重构的柔性互联配电网多目标优化运行

Multi-Objective Optimization Operation of Flexible Interconnected Distribution Network Considering Reconstruction

摘要: 文章提出了一种考虑重构的柔性互联配电网多目标优化运行策略，以应对可再生分布式电源渗透率提升导致的配电网线路过载、电压越限、弃风弃光等问题，从而提高配电网的可靠性、经济性。首先，针对传统重构策略存在的解空间过大、不可行解占比过多的问题，提出基于改进粒子群算法的配电网重构策略，提升求解效率；其次，兼顾配电网经济性与供电可靠性，构建基于二阶锥松弛的柔性互联配电网潮流模型；最后，将传统配电网调度方案与本文所提出方案结果进行对比，验证了所提出模型的有效性和优越性。研究结果表明，本文所提出的模型能有效降低柔性互联配电网的网损，提升可再生分布式电源的消纳能力，降低配电网节点电压偏差程度。研究结论对提升柔性互联配电网的经济性和可靠性具有重要意义，为应对可再生分布式电源的大规模并网提供了可行的解决方案。

Abstract: This article proposes a multi-objective optimization operation strategy for flexible interconnected distribution networks considering reconstruction, in order to address issues such as line overload, voltage exceeding limits, and wind and solar power curtailment caused by the increasing penetration rate of renewable distributed power sources and to improve the reliability and economy of the distribution network. Firstly, in response to the problems of large solution space and excessive proportion of infeasible solutions in traditional reconstruction strategies, a distribution network reconstruction strategy based on an improved particle swarm optimization algorithm is proposed to improve the solving efficiency. Secondly, taking into account the economic efficiency and power supply reliability of the distribution network, a flexible interconnected distribution network power flow model based on second-order cone relaxation is constructed. Finally, the traditional distribution network scheduling scheme was compared with the results of the proposed scheme in this paper, verifying the effectiveness and superiority of the proposed model. The research results indicate that the proposed model can effectively reduce the network loss of flexible interconnected distribution networks, enhance the consumption capacity of renewable distributed power sources, and reduce the degree of voltage deviation at distribution network nodes. The research conclusion is of great significance for improving the economy and reliability of flexible interconnected distribution networks and provides feasible solutions for large-scale grid connection of renewable distributed power sources.