With the rapid development of the social economy,people are paying more and more attention to environmental issues.If society wants sustainable development,it must put energy conservation and emission reduction on the...With the rapid development of the social economy,people are paying more and more attention to environmental issues.If society wants sustainable development,it must put energy conservation and emission reduction on the agenda.At this stage,China has vigorously promoted energy conservation and emission reduction,and all walks of life have gradually embarked on the green road of energy conservation.In recent years,energy saving measures has been widely used in China's oilfield electrical engineering.The author explores and analyzes the basic principles of energy saving measures applied in oilfield electrical engineering,and proposes an effective way to apply energy saving measures in oilfield electrical engineering,hoping to contribute to the energy saving effect of oilfield electrical engineering.展开更多
The solid solutions Ce_(0.9)RE_(0.1)O_(2-δ)(RE=Pr, Nd,Sm, Gd, Dy) were prepared by sol-gel method. The XRD measurement shows that the solid solution is crystallized in cubic fluorite-type structure and the cell volum...The solid solutions Ce_(0.9)RE_(0.1)O_(2-δ)(RE=Pr, Nd,Sm, Gd, Dy) were prepared by sol-gel method. The XRD measurement shows that the solid solution is crystallized in cubic fluorite-type structure and the cell volume of Ce_(0.9)RE_(0.1)O_(2-δ) decreases with the increase of atomic number of RE. The ionic conduction for Ce_(0.9)RE_(0.1)O_(2-δ) was measured by impedance spectroscopy and Ce_(0.9)Pr_(0.1)O_(2-δ) has better conductivity. The linear thermal expansion of Ce_(0.9)RE_(0.1)O_(2-δ) decreases with the increase of atomic number of RE.展开更多
For a long time now, humanity has been facing the phenomenon known as “climate change”, a major challenge of which we must be aware of what we are doing so as not to affect ourselves or future generations. It is evi...For a long time now, humanity has been facing the phenomenon known as “climate change”, a major challenge of which we must be aware of what we are doing so as not to affect ourselves or future generations. It is evident that, if what is sought is a sustainable energy future, the current energy model implemented in certain countries and regions of the world is not the most adequate and makes the achievement of this goal unfeasible. This situation threatens to greatly alter our ecosystems and our social structures, and one of the key actions to mitigate it is, undeniably, the generalization of the use of renewable energy sources;and specifically, the non-conventional sources, referring to solar and wind, technologies that comply with the principle of energy complementarity;however, there are other possible solutions such as the deployment of programs that consider efficient cooking technologies;involving with it is everything related to energy security and equity, as well as environmental protection. In this article, as a technology to be considered to reduce and mitigate the Greenhouse Gases (GHG) emissions, an analysis of the efficiency assessment of electric induction cooktops and the determination of their potential energy savings are carried out. The impact of these results is taken into consideration and a series of conclusions and recommendations for improvement are issued.展开更多
It is a fundamental way to achieve sustainable development and inclusive growth that China takes the low-carbon development path.And low-carbon development is an effective way to respond to many threats,including glob...It is a fundamental way to achieve sustainable development and inclusive growth that China takes the low-carbon development path.And low-carbon development is an effective way to respond to many threats,including global climate anomalies,environmental degradation,and energy shortage.Low-carbon economy is policy economy to a large extent.Although the external environment demands low-carbon development of electric power industry,enterprises lack intrinsic motivation.Electric power industry is the pillar industry of China,and is one of the key industries for China's low-carbon development.The government needs to ensure its dominant position in the low-carbon development of electric power industry,and reform the government performance management system and promote the planning and management of electric power industry through appropriate public policy,in order to adjust the structure of the electric power industry and take a low-carbon development road with Chinese characteristics.展开更多
以节能减排调度为研究框架,针对风电出力的随机性,采用自回归滑动平均模型(auto-regressive and moving average,ARMA)生成大量风速场景,并基于场景削减技术得到具有代表性的典型风速;针对电动汽车入网的不确定性,采用随机概率抽样的电...以节能减排调度为研究框架,针对风电出力的随机性,采用自回归滑动平均模型(auto-regressive and moving average,ARMA)生成大量风速场景,并基于场景削减技术得到具有代表性的典型风速;针对电动汽车入网的不确定性,采用随机概率抽样的电动汽车集群模型,最终建立风-车互动接入的多目标电力调度动态模型。以CPLEX作为求解工具,采用模糊两阶段规划方法求解折衷规划结果。通过不同场景、不同电动汽车规模等算例,分析风电及电动汽车接入电网的调度策略及优化结果,验证所提模型及相关调度策略在改善电网运行经济性、降低污染气体排放方面的优势。展开更多
文摘With the rapid development of the social economy,people are paying more and more attention to environmental issues.If society wants sustainable development,it must put energy conservation and emission reduction on the agenda.At this stage,China has vigorously promoted energy conservation and emission reduction,and all walks of life have gradually embarked on the green road of energy conservation.In recent years,energy saving measures has been widely used in China's oilfield electrical engineering.The author explores and analyzes the basic principles of energy saving measures applied in oilfield electrical engineering,and proposes an effective way to apply energy saving measures in oilfield electrical engineering,hoping to contribute to the energy saving effect of oilfield electrical engineering.
文摘The solid solutions Ce_(0.9)RE_(0.1)O_(2-δ)(RE=Pr, Nd,Sm, Gd, Dy) were prepared by sol-gel method. The XRD measurement shows that the solid solution is crystallized in cubic fluorite-type structure and the cell volume of Ce_(0.9)RE_(0.1)O_(2-δ) decreases with the increase of atomic number of RE. The ionic conduction for Ce_(0.9)RE_(0.1)O_(2-δ) was measured by impedance spectroscopy and Ce_(0.9)Pr_(0.1)O_(2-δ) has better conductivity. The linear thermal expansion of Ce_(0.9)RE_(0.1)O_(2-δ) decreases with the increase of atomic number of RE.
文摘For a long time now, humanity has been facing the phenomenon known as “climate change”, a major challenge of which we must be aware of what we are doing so as not to affect ourselves or future generations. It is evident that, if what is sought is a sustainable energy future, the current energy model implemented in certain countries and regions of the world is not the most adequate and makes the achievement of this goal unfeasible. This situation threatens to greatly alter our ecosystems and our social structures, and one of the key actions to mitigate it is, undeniably, the generalization of the use of renewable energy sources;and specifically, the non-conventional sources, referring to solar and wind, technologies that comply with the principle of energy complementarity;however, there are other possible solutions such as the deployment of programs that consider efficient cooking technologies;involving with it is everything related to energy security and equity, as well as environmental protection. In this article, as a technology to be considered to reduce and mitigate the Greenhouse Gases (GHG) emissions, an analysis of the efficiency assessment of electric induction cooktops and the determination of their potential energy savings are carried out. The impact of these results is taken into consideration and a series of conclusions and recommendations for improvement are issued.
基金supported by the Key Project of Sichuan Education Bureau (Grant Nos 09SA023, 10SB105)the Sichuan Circular Economy Research Centre at Southwest University of Science and Technology (Grant No XHJJ-0905)the Sichuan Oil and Gas Development Center at Southwest Petroleum University (Grant No SKB09-07)
文摘It is a fundamental way to achieve sustainable development and inclusive growth that China takes the low-carbon development path.And low-carbon development is an effective way to respond to many threats,including global climate anomalies,environmental degradation,and energy shortage.Low-carbon economy is policy economy to a large extent.Although the external environment demands low-carbon development of electric power industry,enterprises lack intrinsic motivation.Electric power industry is the pillar industry of China,and is one of the key industries for China's low-carbon development.The government needs to ensure its dominant position in the low-carbon development of electric power industry,and reform the government performance management system and promote the planning and management of electric power industry through appropriate public policy,in order to adjust the structure of the electric power industry and take a low-carbon development road with Chinese characteristics.
文摘以节能减排调度为研究框架,针对风电出力的随机性,采用自回归滑动平均模型(auto-regressive and moving average,ARMA)生成大量风速场景,并基于场景削减技术得到具有代表性的典型风速;针对电动汽车入网的不确定性,采用随机概率抽样的电动汽车集群模型,最终建立风-车互动接入的多目标电力调度动态模型。以CPLEX作为求解工具,采用模糊两阶段规划方法求解折衷规划结果。通过不同场景、不同电动汽车规模等算例,分析风电及电动汽车接入电网的调度策略及优化结果,验证所提模型及相关调度策略在改善电网运行经济性、降低污染气体排放方面的优势。
