#br# 协调柔性负荷与储能的交直流配电网经济优化调度

由于配电网中可再生能源和直流负荷逐渐增加，直流配电网的发展受到重视，关于交直流配电网优化调度的研究成为重要课题之一。为了促进可再生能源消纳，协调交直流两侧运行状态，降低配电网运行成本，将柔性负荷分为可转移负荷和可削减负荷，同时考虑储能参与优化调度的影响，计及交/直流线路损耗、储能和换流站损耗，通过调度分布式电源、储能系统以及电压源型换流器的输出功率，以购电费用、弃风弃光惩罚费用、网损费用、柔性负荷调度成本之和最小为优化目标，基于二阶锥松弛、分段近似线性化等技术，建立交直流配电网经济调度模型。最后在50节点算例系统上仿真分析，结果验证了所提优化调度方案的有效性和合理性。

Economic Optimal Scheduling of AC/DC Distribution Network Coordinating Flexible Load and Energy Storage Systems#br#

As renewable energy and DC loads in distribution networks have gradually increased， the development of DC distribution networks has been valued， and research on the optimal scheduling of AC/DC distribution networks has become one of the important topics. In order to promote the consumption of renewable energy， to coordinate the operating status of both the AC and DC sides， and to reduce the operating cost of the distribution network， divide the flexible load into transferable load and reducible load， consider the impact of energy storage participation in optimal scheduling， and take into account the losses of AC and DC lines， energy storages and converter stations， by scheduling the output power of distribution generation， energy storage systems and voltage source converter， an economic scheduling model based on second order conic relaxation， segmental approximate linearization and other technologies is proposed， which aims to minimize total cost of purchasing electricity， abandoning wind and solar power， suffering losses and scheduling flexible load. Finally， simulation analysis on a 50-node system verifies the effectiveness and rationality of the proposed scheduling scheme.