基于能值的水泥产消者电-碳融合可持续性分析

Emergy Based Sustainability Analysis of Electricity-carbon Integration for Industrial Power Prosumer

工业企业从电能消费者转变为产消者的环境生态可持续性仍是个未知数。以水泥产消者为例,基于能值分析方法,提出了光伏发电有效能值可持续发展指数,对分布式光伏发电系统在生命周期内投入的成本和“免费”资源进行统计和综合计算;接着,提出了基于能值指标的绿证与碳抵消电量折算方法,对不同用电模式产生的碳减排效果和电-碳-绿证融合的自然价值进行量化和比较。结果证明,水泥产消者的分布式光伏系统单位功率输出的能值需求低;“自发自用”模式可兼容经济性实现高效减碳;能值指标减小了月度绿证和碳市场的可交易量。据此,水泥产消者需进一步提高能值可持续性,机制制定需倡导个性化的电-碳-证交易,以实现能源供给与生态服务和谐发展。

The environmental and ecological sustainability of factories from energy consumers to prosumers is still a mystery.Taking a power prosumer of a cement plant as an example,based on the emergy analysis method,an effective emergy sustainability index(EESI)of photovoltaic power generation system was proposed,subsequently,statistical and comprehensive calculations were conducted on the costs and“free”resources invested in the distributed photovoltaic power generation system throughout its lifecycle.Furthermore,the calculation method of green card and carbon offset electricity based on the emergy index was proposed.Then,the carbon reduction effects in different electricity consumption patterns and natural value of electricitycarbon-green power certification integration generated of this prosumer were quantified and compared.The results show that the distributed photovoltaic system of this prosumer has low emergy demand per unit power output,the“self use,surplus power access”mode of this prosumer is compatible with the economy to achieve efficient carbon reduction,and the emergy index reduces the monthly green card and carbon market tradable volume of this prosumer.Therefore,it is necessary to improve the emergy sustainability of power prosumers of cement plants,and to advocate personalized electricity carbon securities trading in mechanism development,so as to achieve the harmonious development of energy supply and ecological services.