微型能源网日前最优经济调度研究与电储能策略分析

Research on Day-ahead Optimal Economic Dispatching Strategy for Micro-energy-grid and Analysis of Electric Energy Storage Strategy

针对可再生能源的消纳问题,提出一种考虑冷热电联供(Combined cooling heating and power,CCHP)及电转气(Power to gas,P2G)技术的微型能源网日前优化调度策略。首先,通过研究CCHP及P2G的能源转化机理,论证了其对综合能源系统的重要作用。其次,在分析多能耦合原理的基础上,以数学模型描述了电、气、热、冷不同能源间协调转化的关系。然后,以运行成本为目标,建立了微型能源网日前经济优化调度模型。最后,通过分析不同运行方式下的调度结果,验证了所提调度策略的优越性,并在此基础上,研究了储能电池的最佳调度策略。

Aiming at the problem of renewable energy consumption,this paper proposed a day-ahead optimal dispatching strategy of micro-energy-grid considering combined cooling heating(CCHP)and power and power to gas(P2G)technology.Firstly,this paper studied the energy conversion mechanism of CCHP and P2G,in order to demonstrate the important role of CCHP and P2G in the integrated energy system.Secondly,based on the analysis of the principle of multi energy coupling,a mathematical model was used to describe the coordinated transformation between different electricity,gas,heat and cold.Then,the day-ahead economic optimal dispatching model of micro energy-grid with the goal of minimizing operation cost was established.Finally,by analyzing the dispatching results under different operation modes,the superiority of the dispatching strategy proposed in this paper was verified,and on this basis the optimal dispatching strategy of energy storage battery was studied.