This letter to the editor presents some notes on energetic complementarity and a growing understanding of its role as a planning tool. This letter looks at the fact that an increasing number of works in recent years o...This letter to the editor presents some notes on energetic complementarity and a growing understanding of its role as a planning tool. This letter looks at the fact that an increasing number of works in recent years on this subject has promoted an increase in its level of importance in the design and operation of energy systems. The main change is the consideration of complementarity no longer as a consequence but as a design parameter. The continental dimension of Brazil, for example, should make it obvious that complementarities should be sought among the various energy resources available.展开更多
By using a smoothing function,the P nonlinear complementarity problem(P NCP)can be reformulated as a parameterized smooth equation.A Newton method is proposed to solve this equation.The iteration sequence generated by...By using a smoothing function,the P nonlinear complementarity problem(P NCP)can be reformulated as a parameterized smooth equation.A Newton method is proposed to solve this equation.The iteration sequence generated by the proposed algorithm is bounded and this algorithm is proved to be globally convergent under an assumption that the P NCP has a nonempty solution set.This assumption is weaker than the ones used in most existing smoothing algorithms.In particular,the solution obtained by the proposed algorithm is shown to be a maximally complementary solution of the P NCP without any additional assumption.展开更多
【目的】“双碳”背景下,节能降碳已成为保障国家能源安全与实现绿色转型的关键。油田联合站作为油气集输与处理的能耗“大户”,传统的“电网+燃气锅炉”供能模式成本高、排放大、韧性差等矛盾突出,亟需构建适应高比例可再生能源、季节...【目的】“双碳”背景下,节能降碳已成为保障国家能源安全与实现绿色转型的关键。油田联合站作为油气集输与处理的能耗“大户”,传统的“电网+燃气锅炉”供能模式成本高、排放大、韧性差等矛盾突出,亟需构建适应高比例可再生能源、季节调控能力强大的多能互补系统。【方法】针对油田联合站高耗能、高排放、高韧性风险的“三高”问题,提出了“风光-氢-储-荷”多能系统协同架构:将风光发电替代网购电,以电解制氢-储氢-燃料电池形成电-氢-电闭环,并利用热电联产机组、热泵、储热多源供热;创新性地将阶梯碳交易与价格/激励双重需求响应纳入统一优化模型,从经济、低碳、韧性多重目标对新建系统进行评价分析。【结果】基于混合整数线性规划(Mixed-integer Linear Programming,MILP)问题,设置了4种场景,以大庆油田某联合站为例分析表明:①与传统供能模式相比,含氢循环的多能互补系统能源利用效率提高了30%以上,年运行成本降低41.20%,碳排放强度下降2.10%,且可再生能源消纳率提升至90%以上;②阶梯碳交易通过递增碳价杠杆,使系统碳交易成本上升24.98%、碳排放量下降6.74%;③叠加需求响应后,可进一步降低碳排放1.30%、碳交易成本下降1.51%,实现减排与降本“双赢”;④氢能子系统作为跨时空调节器,在风光发电时段存储富余绿电,在负荷高峰或极端天气下则反向供电、供热,全年弃风弃光率控制在1%以内,显著增强供能韧性。经济性测算显示,在现行碳价与电解槽投资水平下,新建系统增量投资回收期为5~8年,若碳价低于80元/t、电解槽成本下降至2500元/kW以内,回收期可缩短至4年。【结论】研究成果已形成可复制的油田联合站供能低碳改造技术路线,有助于伴生气资源丰富、电热负荷稳定的老联合站提质增效,也可为高比例可再生能源新区块微网规划提供“电-热-氢”协同范式。展开更多
文摘This letter to the editor presents some notes on energetic complementarity and a growing understanding of its role as a planning tool. This letter looks at the fact that an increasing number of works in recent years on this subject has promoted an increase in its level of importance in the design and operation of energy systems. The main change is the consideration of complementarity no longer as a consequence but as a design parameter. The continental dimension of Brazil, for example, should make it obvious that complementarities should be sought among the various energy resources available.
基金Supported by China Postdoctoral Science Foundation(No.20060390660)Science and Technology Development Plan of Tianjin(No.06YFGZGX05600)+1 种基金Scientific Research Foundation of Liu Hui Center for Applied MathematicsNankai University-Tianjin University.
文摘By using a smoothing function,the P nonlinear complementarity problem(P NCP)can be reformulated as a parameterized smooth equation.A Newton method is proposed to solve this equation.The iteration sequence generated by the proposed algorithm is bounded and this algorithm is proved to be globally convergent under an assumption that the P NCP has a nonempty solution set.This assumption is weaker than the ones used in most existing smoothing algorithms.In particular,the solution obtained by the proposed algorithm is shown to be a maximally complementary solution of the P NCP without any additional assumption.
文摘【目的】“双碳”背景下,节能降碳已成为保障国家能源安全与实现绿色转型的关键。油田联合站作为油气集输与处理的能耗“大户”,传统的“电网+燃气锅炉”供能模式成本高、排放大、韧性差等矛盾突出,亟需构建适应高比例可再生能源、季节调控能力强大的多能互补系统。【方法】针对油田联合站高耗能、高排放、高韧性风险的“三高”问题,提出了“风光-氢-储-荷”多能系统协同架构:将风光发电替代网购电,以电解制氢-储氢-燃料电池形成电-氢-电闭环,并利用热电联产机组、热泵、储热多源供热;创新性地将阶梯碳交易与价格/激励双重需求响应纳入统一优化模型,从经济、低碳、韧性多重目标对新建系统进行评价分析。【结果】基于混合整数线性规划(Mixed-integer Linear Programming,MILP)问题,设置了4种场景,以大庆油田某联合站为例分析表明:①与传统供能模式相比,含氢循环的多能互补系统能源利用效率提高了30%以上,年运行成本降低41.20%,碳排放强度下降2.10%,且可再生能源消纳率提升至90%以上;②阶梯碳交易通过递增碳价杠杆,使系统碳交易成本上升24.98%、碳排放量下降6.74%;③叠加需求响应后,可进一步降低碳排放1.30%、碳交易成本下降1.51%,实现减排与降本“双赢”;④氢能子系统作为跨时空调节器,在风光发电时段存储富余绿电,在负荷高峰或极端天气下则反向供电、供热,全年弃风弃光率控制在1%以内,显著增强供能韧性。经济性测算显示,在现行碳价与电解槽投资水平下,新建系统增量投资回收期为5~8年,若碳价低于80元/t、电解槽成本下降至2500元/kW以内,回收期可缩短至4年。【结论】研究成果已形成可复制的油田联合站供能低碳改造技术路线,有助于伴生气资源丰富、电热负荷稳定的老联合站提质增效,也可为高比例可再生能源新区块微网规划提供“电-热-氢”协同范式。
