用于提升电–气两网调节能力的微网集群协调运行模型

针对单一多能源微网受能源类型、自身容量制约,难以充分实现多种能源高效利用和协调控制的问题,该文基于多能源微网能量交互策略建立可提升电-气两网调节能力的微网集群优化运行模型。首先建立以电热冷、电气氢、电热气氢、电热冷气氢等不同能源类型运行时多能源微网能量供给、转换特性的统一模型;然后在统一模型的基础上,建立满足电-气两网调节需求的多能源微网集群系统运行优化模型;随后以多能源微网集群的总运行成本最小和能源利用效率最大为优化目标,使用改进的区域局部搜索NSGA-Ⅱ算法(NSGA-Ⅱ-RLS)对建立的微网集群优化模型进行求解;最后,基于改进的IEEE14节点系统和天然气网络6节点系统,构建可提升电–气两网运行调节能力的多能源微网集群运行仿真模型。仿真结果表明,所提多能源微网集群系统能够有效提升电-气两网调节能力,实现多能源微网集群系统的多能互补运行。

Coordination Operation Model of Microgrid Cluster for Improving Electricity-gas Networks Regulation Capability

The single multi-energy microgrid is constrained by the energy type and capacity, it is difficult to fully realize the efficient use and coordinated control of multiple energy sources for independent operation. To solve this problem, this paper established a microgrid cluster coordination and optimization operation model that can improve the electricity-gas networks regulation capability based on the multi-energy microgrid. Firstly, a multi-type microgrid unified model containing multiple energy types including electricity, heat, cold, hydrogen, and gas was established. Then an energy exchange model between microgrids based on unified model was established. A multi-energy microgrid cluster system optimized operation strategy suitable for the electricity-gas networks regulation demand was proposed. With the multi-energy microgrid cluster system’s minimum operating cost and maximum energy utilization efficiency as the optimization goals, and a improved regional local search NSGA-Ⅱalgorithm(NSGA-Ⅱ-RLS) was used to solve the microgrid cluster optimization model. Finally, based on the improved IEEE14 node system and natural gas network 6-node system structure, a multi energy microgrid cluster operation simulation model The results of simulation show that the ME-MCS proposed in which can enhance the operation and regulation ability of power and gas networks was established. this paper can effectively improve the electricity-gas networks regulation ability and realize the multi-energy complementary operation of the ME-MCS.