新能源电站的发电和现货市场电价均存在较大的不确定性,使得其投标决策困难,容易因实际发电量与投标电量之间或实际电价与预测电价之间存在较大偏差而产生惩罚费用或影响投标决策有效性。考虑上述因素,将“新能源+储能”电站作为价格接...新能源电站的发电和现货市场电价均存在较大的不确定性,使得其投标决策困难,容易因实际发电量与投标电量之间或实际电价与预测电价之间存在较大偏差而产生惩罚费用或影响投标决策有效性。考虑上述因素,将“新能源+储能”电站作为价格接受者,以国内双结算模式和偏差考核为背景制定现货市场最优投标策略。首先,采用最小门控记忆网络–分位数回归(minimal gated memory network-quantile regression,MGM-QR)组合模型模拟电站出力和电价的多重不确定性,以条件风险价值(conditional value at risk,CVaR)为风险度量措施,构建“新能源+储能”电站的日前市场投标和实时市场预期投标的电量组合模型。其次,在实时市场阶段,基于电价和出力的超短期预测结果,利用鲁棒滚动优化模型调度储能出力并重新确定投标电量以获取最大化收益。最后,通过某地区的实际数据进行验证,结果表明所提方法可以有效满足不同风险偏好决策者投标决策需求,保障电站收益。展开更多
For the low utilization rate of photovoltaic power generation,taking a new energy power system constisting of concentrating solar power(CSP),photovoltaic power(PP)and battery energy storage system as an example,a mult...For the low utilization rate of photovoltaic power generation,taking a new energy power system constisting of concentrating solar power(CSP),photovoltaic power(PP)and battery energy storage system as an example,a multi-objective optimization scheduling strategy considering energy storage participation is proposed.Firstly,the new energy power system model is established,and the PP scenario generation and reduction frame based on the autoregressive moving average model and Kantorovich-distance is proposed.Then,based on the optimization goal of the system operation cost minimization and the PP output power consumption maximization,the multi-objective optimization scheduling model is established.Finally,the simulation results show that introducing energy storage into the system can effectively reduce the system operation cost and improve the utilization efficiency of PP.展开更多
Modern science and technology is being developed towards destroying human and human calls for a new era of science ＆ technology. Contemporary science is seeing a significant breakthrough and a new revolution of scien...Modern science and technology is being developed towards destroying human and human calls for a new era of science ＆ technology. Contemporary science is seeing a significant breakthrough and a new revolution of science and technology is beginning. The theoretical basis of the new revolution of science and technology is ＂state space-time＂, ＂the unity of physics and biology＂, ＂thinking motion and automatic organization of the universe＂ and ＂thinking＇s active control＂. The new revolution of science and technology takes material （microscopic particle） science, life （organic and inorganic life） science and thinking science as the fundamental sciences, takes life technology, new information technology, new material technology and new energy technology as the basis of the overall technological system, progresses in all aspects, including life technology, medicine, new material technology, new information technology, new energy technology, new robot technology, new manufacturing technology, laser technology, astronavigation technology, ocean technology, military technology, new educational technology, etc., and at the same time Qigong technology with thinking control as its core will emerge. In the era of life, thinking and Qigong technology, technology proceeds very rapidly, global society and economy develop at a high speed, and globalization is accelerated. Life, thinking and Qigong technologies feature improvement of human internal energy and quality, purify human soul, reduce material desire, and greatly reduce environmental disruption. The overall （thinking and Qigong） technology takes the establishment of the cosmic era of human as its ultimate goal.展开更多
From the perspective of life cycle assessment （LCA）, the development, construction, and operation of all kinds of new energy power generation technologies release greenhouse gas （GHG） emissions. This sparks concer...From the perspective of life cycle assessment （LCA）, the development, construction, and operation of all kinds of new energy power generation technologies release greenhouse gas （GHG） emissions. This sparks concerns about the lowcarbon nature of the new energy power generation technologies. Based on national and international literature review, this paper estimates and compares the GHG emission factors of traditional thermal power generation and new energy power generation technologies in China with the LCA approach. The GHG mitigation potential of new energy power generation technologies as substitution for traditional thermal power generation in China was evaluated, according to the objectives of new energy power generation of the national development planning. The results show that the GHG emission factors of new energy power generation axe much lower than that of traditional thermal power generation even with LCA accounting, and the GHG mitigation potential of new energy substitution is huge.展开更多
文摘新能源电站的发电和现货市场电价均存在较大的不确定性,使得其投标决策困难,容易因实际发电量与投标电量之间或实际电价与预测电价之间存在较大偏差而产生惩罚费用或影响投标决策有效性。考虑上述因素,将“新能源+储能”电站作为价格接受者,以国内双结算模式和偏差考核为背景制定现货市场最优投标策略。首先,采用最小门控记忆网络–分位数回归(minimal gated memory network-quantile regression,MGM-QR)组合模型模拟电站出力和电价的多重不确定性,以条件风险价值(conditional value at risk,CVaR)为风险度量措施,构建“新能源+储能”电站的日前市场投标和实时市场预期投标的电量组合模型。其次,在实时市场阶段,基于电价和出力的超短期预测结果,利用鲁棒滚动优化模型调度储能出力并重新确定投标电量以获取最大化收益。最后,通过某地区的实际数据进行验证,结果表明所提方法可以有效满足不同风险偏好决策者投标决策需求,保障电站收益。
基金Science and Technology Project of State Grid Corporation of China(No.SGGSKY00FJJS1800140)。
文摘For the low utilization rate of photovoltaic power generation,taking a new energy power system constisting of concentrating solar power(CSP),photovoltaic power(PP)and battery energy storage system as an example,a multi-objective optimization scheduling strategy considering energy storage participation is proposed.Firstly,the new energy power system model is established,and the PP scenario generation and reduction frame based on the autoregressive moving average model and Kantorovich-distance is proposed.Then,based on the optimization goal of the system operation cost minimization and the PP output power consumption maximization,the multi-objective optimization scheduling model is established.Finally,the simulation results show that introducing energy storage into the system can effectively reduce the system operation cost and improve the utilization efficiency of PP.
文摘Modern science and technology is being developed towards destroying human and human calls for a new era of science ＆ technology. Contemporary science is seeing a significant breakthrough and a new revolution of science and technology is beginning. The theoretical basis of the new revolution of science and technology is ＂state space-time＂, ＂the unity of physics and biology＂, ＂thinking motion and automatic organization of the universe＂ and ＂thinking＇s active control＂. The new revolution of science and technology takes material （microscopic particle） science, life （organic and inorganic life） science and thinking science as the fundamental sciences, takes life technology, new information technology, new material technology and new energy technology as the basis of the overall technological system, progresses in all aspects, including life technology, medicine, new material technology, new information technology, new energy technology, new robot technology, new manufacturing technology, laser technology, astronavigation technology, ocean technology, military technology, new educational technology, etc., and at the same time Qigong technology with thinking control as its core will emerge. In the era of life, thinking and Qigong technology, technology proceeds very rapidly, global society and economy develop at a high speed, and globalization is accelerated. Life, thinking and Qigong technologies feature improvement of human internal energy and quality, purify human soul, reduce material desire, and greatly reduce environmental disruption. The overall （thinking and Qigong） technology takes the establishment of the cosmic era of human as its ultimate goal.
基金supported by the China Sustainable Energy Program,Energy Foundation(No.G-0911-11642)Environmental Protection Industry of Commonweal Project "Research on Co-control Policies and Demonstration of Air Pollution and Greenhouse Gas Emissions of Key Industries"(No.201009051)
文摘From the perspective of life cycle assessment （LCA）, the development, construction, and operation of all kinds of new energy power generation technologies release greenhouse gas （GHG） emissions. This sparks concerns about the lowcarbon nature of the new energy power generation technologies. Based on national and international literature review, this paper estimates and compares the GHG emission factors of traditional thermal power generation and new energy power generation technologies in China with the LCA approach. The GHG mitigation potential of new energy power generation technologies as substitution for traditional thermal power generation in China was evaluated, according to the objectives of new energy power generation of the national development planning. The results show that the GHG emission factors of new energy power generation axe much lower than that of traditional thermal power generation even with LCA accounting, and the GHG mitigation potential of new energy substitution is huge.
