基于多类需求响应的配电网优化调度

Optimal Dispatching of Distribution Network Based on Multi-type Demand Response

针对当前激励型定价补偿机制无法满足多类型负荷差异化需求的问题,提出了一种分段式补偿价格形式的可中断负荷补偿方法,同时引入负荷转移时间和负荷转移功率的二维交变函数,建立了量化负荷转移成本的可转移负荷补偿模型;计及可中断负荷不确定性,建立了多类型需求响应参与配电网优化运行模型,针对模型中非凸非线性的约束,利用二阶锥松弛方法将模型转化为混合整数二阶锥规划模型,采用CPLEX求解器对模型进行求解,并引入贡献度和置信度作为评估用户响应能力的评价指标。仿真结果表明,新型补偿机制能更加合理地指导用户调整用电负荷,平滑负荷曲线,提高配电网运行经济性。

Aimed at the problem that the existing incentive pricing compensation mechanism cannot meet the differentiated needs of multiple types of load,a compensation method for interruptible load is proposed in the form of sectional compensatory price.Meanwhile,a two-dimensional alternating function of load transferable time and load transferable power is introduced to establish a transferable load compensation model to quantify the cost of load transfer.A model of multi-type demand response participating in the optimal operation of distribution network considering uncertainties in interruptible load is established.Aimed at the non-convex nonlinearity constraint of the model,it is transformed into a mixed integer second-order cone programming model by the second-order cone relaxation method,which is further solved by the CPLEX solver.In addition,the contribution degree and confidence degree are introduced to evaluate the user responsiveness.Simulation results show that the novel compensation mechanism can more reasonably guide users to adjust the power load,smooth the load curve,and improve the operating economy of distribution network.