含风电场电力系统的可用输电能力分层优化决策研究

Study on Stratified Optimal Decision for Available Transfer Capability Calculation of Wind Power System

在风电大规模并网及节能减排的背景下,传统的可用输电能力ATC计算模型已不适用,如何协调ATC与系统运行经济性、环保性之间的关系具有重要意义。建立了含风电场并考虑常规机组燃料费用约束、污染气体排放量约束的ATC协调决策模型;提出了ATC求解的多目标分层优化方法,计算量大幅度降低,并且在第2优先层采用隶属度函数对模型进行处理。最后采用IEEE30节点系统进行仿真计算,结果表明所提模型及ATC方法有效兼顾了系统运行的经济性与环保性。

Traditional available transfer capability calculation model is no longer applicable in the background of large-scale wind power integration and energy conservation and emission reduction. It has great significance to coordinate the relations among ATC, economy and environment protection. A coordinated ATC decision model with wind farm considering both fuel cost and pollution emission is established. The stratified method of multi-object optimal by using ATC calculation is presented,making a significant reduction in the amount of calculation. Meanwhile, membership function is used at the second priority level to solve the model. Finally, the simulation results of IEEE30-bus system show that the proposed model and method can keep the balance between the economy and environment protection.