高比例新能源下考虑需求侧响应和智能软开关的配电网重构

提出了高比例新能源接入下考虑需求侧响应(DR)和智能软开关(SOP)的配电网重构策略.首先,构建了配电网重构下的DR和SOP模型;然后,综合考虑网损费用、弃风费用、弃光费用和开关费用,以社会利益最大化为优化目标,构建高比例新能源接入下多时段配电网重构模型;接着,通过大M法和二阶锥松弛将配电网重构模型转化为混合整数二阶锥规划问题,并采用YALMIP和CPLEX对转化后的模型进行求解;最后,采用改进的IEEE 33节点配电系统进行了算例仿真,并进行了灵敏度分析和不同配电网重构策略的对比分析,验证了模型的有效性.算例分析结果表明,采用所提考虑DR和SOP的配电网重构策略,可以有效提高配电系统的新能源消纳能力,平抑负荷峰谷差,提升配电网运行的经济性.

Distribution Network Reconfiguration with High Penetration of Renewable Energy Considering Demand Response and Soft Open Point

This paper proposes a reconfiguration strategy for distribution networks with high penetration of renewable energy considering demand response (DR) and soft open point (SOP). Firstly, the models of DR and SOP for the reconfiguration strategy of distribution networks are constructed. Secondly, with the aim of maximizing social benefit, a multi-period reconfiguration model is built for distribution networks with high penetration of renewable energy considering the costs of network losses, curtailment of wind power and photovoltaic power, and switch operation. Thirdly, the model is converted into a mixed-integer second-order cone programming problem by using the Big-M method and the second-order cone relaxation, and YALMIP and CPLEX are utilized to solve the converted model. Finally, the modified IEEE 33-bus distribution network is utilized to verify the effectiveness of the proposed strategy. Sensitivity analysis and comparison of different reconfiguration strategies of the distribution network are also performed. The results show that the proposed reconfiguration strategy considering DR and SOP can effectively improve accommodation capability of distribution networks for renewable energy, and reduce the peak-valley difference of the loads, while enhancing the economy benefit for distribution network operation.