考虑调峰资源互济的区域电网优化调度方法

An Optimization Dispatch Method for Regional Power Grid Considering Peaking Resource Mutual Support

为了提升清洁能源消纳能力,充分利用各省区调峰资源,研究了不同类型电源调峰能力,提出了一种考虑调峰资源互济的区域电网优化调度方法。不同类型电源的调峰能力不同,基于燃煤机组调峰经济性差异,提出了基本调峰能力、不投油调峰能力、投油调峰能力三项评价指标,以量化省级电网不同经济区间下的系统调峰能力。考虑省区间调峰资源差异,构建了基于两层架构的区域电网优化调度方法。上层架构用于优化区域电网内各省级电网送受电计划,下层架构在给定送电计划基础上优化编制发电计划,确定燃煤机组调峰计划。通过两层架构间的迭代实现对区域电网优化调度问题的求解。在IEEERTS-96三区域系统基础上构造算例,验证所提出方法的可行性。结果表明,该方法能直观量化各省区调峰能力,并通过经济评价指标实现跨区调峰资源互济,有助于提升区域电网清洁能源消纳能力。

In order to improve the absorption capacity of clean energy and make full use of the peak regulation resources of each province,the peak regulation capacity of different types of power sources was studied,and a regional power grid optimization dispatching method considering the mutual aid of peak regulation resources was proposed.Different types of power supply have different peak-regulating capacities.Based on the economic difference of peak-regulating capacity of coal-fired power units,three evaluation indexes were proposed,namely basic peak-regulating capacity,non-fuel peak-regulating capacity and fuel peak-regulating capacity,to quantify the system peak-regulating capacity of provincial power grid under different economic zones.Considering the difference of peak dispatching resources between provinces,an optimal dispatching method of regional power grid based on two layer architecture was constructed.The superstructure was used to optimize the power delivery and reception plans of each provincial power grid within the regional power grid,while the lower structure optimized the generation plan based on the given power transmission plan and determined the peak load adjustment plan of coal-fired units.The optimization dispatching problem of regional power grid was solved by iteration between two layers architecture.A case study was constructed based on the IEEE RTS-96 three-region buses system to verify the feasibility of the proposed method.The results show that this method can directly quantify the peak shifting capacity of each province and region,and realize the mutual aid of peak shifting resources across regions through economic evaluation indexes,which is helpful to improve the clean energy consumption capacity of regional power grid.