含P2G和复合储能的高速公路服务区综合能源系统日前优化调度

Day-ahead Optimization of Integrated Energy System in Highway Service Area with P2G and Composite Energy Storage

为了提高高速公路服务区综合能源系统可再生能源消纳能力、降低经济成本,本文面向高速公路服务区中电、气、冷、热等多态能源,基于能源枢纽矩阵建模方法,建立能源供给侧、能量转换侧和负荷需求侧各模块的能量转换与供需耦合特性模型;在充分消纳可再生能源的情况下,以系统运行总成本最小为目标函数,建立系统优化调度模型;针对同一负荷不同运行场景下的调度结果表明,所提模型能最大程度使用风光发电,降低系统总运行成本;供给侧引入电气耦合与负荷侧引入复合储能的调度结果表明,所提模型能达到系统运行费用最优,同时可实现系统周期内运行费用的“削峰填谷”。

In order to improve the absorption capacity of renewable energy and reduce the economic cost of the integrated energy system in the highway service area,based on the energy hub matrix modeling method,we established the coupling characteristic models of energy conversion and supply&demand for each module on the energy supply side,energy conversion side and load demand side for the multi-state energy in the highway service area.Under the condition of fully absorbing renewable energy,we established the optimal scheduling model of system with the minimum total operating cost as the objective function.The scheduling results under the same load and different operating scenarios show that the proposed model can maximize the utilization of wind power generation and reduce the total operating cost of the system.The scheduling results of electric coupling on the supply side and complex energy storage on the load side show that the proposed model can achieve the optimal operating cost of the system,and at the same time can realize the"peak cutting and valley filling"of the operating cost within the system cycle.