双碳目标下燃煤热电联产机组储能技术应用分析

  目的  “碳达峰、碳中和”目标要求现有能源结构进行深刻变革。提高原有燃煤热电联产机组灵活调节能力是保障新能源电力安全并网的重要内容之一。  方法  分别从燃煤热电联产系统灵活调节需求、潜在储能应用现状以及耦合储能技术的发展方向等方面进行了评述。  结果  分析认为深度“热电解耦”仍是提高燃煤热电联产系统的关键内容。其次，为满足“源–荷”匹配性，储能技术将在燃煤热电联产系统中发挥重要作用，其中具有应用潜力的储能技术主要包括储热、蓄电以及飞轮储能。  结论  最后根据燃煤热电联产机组耦合储能技术的应用特点，提出了储能性能老化、新能源消纳、扩容区域热电负荷中长期变更、初投资与回收期的经济性分析四个方面的建议以及需要注意的相关问题。

Application Analysis of Energy Storage Technology for Coal-Fired Combined Heat and Power Generation Under Carbon Peak and Neutrality Goal

  Introduction  The goal of "carbon peak and neutrality" will require profound changes in the existing energy structure. Improving the flexible adjustment capabilities of the original coal-fired cogeneration units is one of the essential elements in ensuring the safe grid connection of new energy power.   Method  This paper reviewed the flexible adjustment requirements of the coal-fired cogeneration system, the current status of potential energy storage applications, and the development direction of coupled energy storage technology.   Result  It is concluded that the deep "thermoelectric decoupling" is still the key to improving the coal-burning cogeneration system. Secondly, to meet the "source-charge" matching, energy storage technology will play an essential role in the coal-fired cogeneration system, among which energy storage technology with potential application mainly includes heat storage, electricity storage, and flywheel energy storage.   Conclusion  Finally, according to the application characteristics of coupled energy storage technology for coal-fired cogeneration units, the paper puts forward suggestions on the aging of energy storage performance, absorption of new energy, long-term change of thermal power load in the expansion area, economic analysis of initial investment, and payback period and relevant issues needing attention.