In many regions,international power system interconnections provide economic,energy-security,environmental,and technical benefits.In contrast,such interconnections remain scarce in Northeast Asia.In 2016,after approvi...In many regions,international power system interconnections provide economic,energy-security,environmental,and technical benefits.In contrast,such interconnections remain scarce in Northeast Asia.In 2016,after approving a joint memorandum of understanding between major electric power companies from China,Japan,South Korea,and Russia,related initiatives regained momentum in the region.Nevertheless,the corresponding developments in Japan remain limited,mainly owing to the lack of involvement of Japanese electric power companies.This study represents a pioneering attempt to provide an economic assessment based on power exchange prices of a power system interconnection between Japan and South Korea regarding the competitiveness of electric power companies in terms of competitive business segments and strategic consequences.We found that although the position of Japanese generators may slightly deteriorate,that of the supply segment would substantially improve,thus suggesting that more opportunities than threats are derived from the interconnection.This promising outcome may foster the adoption of an interconnection with South Korea considering the positive economic and business perspectives in Japan.Furthermore,realizing the interconnection may improve the energy security and air quality in the region.展开更多
In 2007, State Grid Corporation of China (SGCC) actively executed Implementation Opinions on Deepening Power Institutional Reform during the 11th Five-Year Plan Period and pressed forward three-tier power market const...In 2007, State Grid Corporation of China (SGCC) actively executed Implementation Opinions on Deepening Power Institutional Reform during the 11th Five-Year Plan Period and pressed forward three-tier power market construction. Based on regulated and transparent power transactions, SGCC actively enhanced service quality, strived for optimal allocation of electricity in a wider scope. Meanwhile, great achievements have been made in energy-conservation and emission-reduction. This paper briefly introduces three-tier power market construction with market transaction data in 2007, then summarizes and analyzes the characteristics of power trading. Finally, suggestions on further development of power market are tentatively given.展开更多
THOUGH far away from each other in distance, relations between China and African countries have moved ever closer in recent years. No doubt, inter-party exchange has played an important part in this process. After the...THOUGH far away from each other in distance, relations between China and African countries have moved ever closer in recent years. No doubt, inter-party exchange has played an important part in this process. After the founding of the People＇s Republic of China in 1949. the Communist Party of China （CPC）, China＇s ruling Party, has maintained friendly relations with its counterparts in African countries, greatly promoting cooperation in various fields between China and Africa.展开更多
The CFD-DEM model was developed to simulate solid exchange behavior between two half beds in a bench-scale two-dimensional dual-leg fluidized bed （DL-FB）. Power spectrum density （PSD） analysis was applied to obtai...The CFD-DEM model was developed to simulate solid exchange behavior between two half beds in a bench-scale two-dimensional dual-leg fluidized bed （DL-FB）. Power spectrum density （PSD） analysis was applied to obtain the dominant frequency （F） of the simulated differential particle number （APLR） between the two half beds. Effects of fluidization velocity （u） and bed material inventory （H） on the solid exchange behavior were studied using the CFD-DEM model. Not only snapshots of the simulated particle flow patterns using the OpenGL code but also the dominant frequency of APLR was similar to the experimental results. The simulation results show that higher fluidization velocity assists the exchange of more particles between the two half beds, but the dispersion of clusters on the bed surface into single particles decreases the cluster exchange frequency. A greater bed material inventory results in more intense cluster exchange. The cluster exchange frequency decreases with an increase of the bed material inventory.展开更多
文摘In many regions,international power system interconnections provide economic,energy-security,environmental,and technical benefits.In contrast,such interconnections remain scarce in Northeast Asia.In 2016,after approving a joint memorandum of understanding between major electric power companies from China,Japan,South Korea,and Russia,related initiatives regained momentum in the region.Nevertheless,the corresponding developments in Japan remain limited,mainly owing to the lack of involvement of Japanese electric power companies.This study represents a pioneering attempt to provide an economic assessment based on power exchange prices of a power system interconnection between Japan and South Korea regarding the competitiveness of electric power companies in terms of competitive business segments and strategic consequences.We found that although the position of Japanese generators may slightly deteriorate,that of the supply segment would substantially improve,thus suggesting that more opportunities than threats are derived from the interconnection.This promising outcome may foster the adoption of an interconnection with South Korea considering the positive economic and business perspectives in Japan.Furthermore,realizing the interconnection may improve the energy security and air quality in the region.
文摘In 2007, State Grid Corporation of China (SGCC) actively executed Implementation Opinions on Deepening Power Institutional Reform during the 11th Five-Year Plan Period and pressed forward three-tier power market construction. Based on regulated and transparent power transactions, SGCC actively enhanced service quality, strived for optimal allocation of electricity in a wider scope. Meanwhile, great achievements have been made in energy-conservation and emission-reduction. This paper briefly introduces three-tier power market construction with market transaction data in 2007, then summarizes and analyzes the characteristics of power trading. Finally, suggestions on further development of power market are tentatively given.
文摘THOUGH far away from each other in distance, relations between China and African countries have moved ever closer in recent years. No doubt, inter-party exchange has played an important part in this process. After the founding of the People＇s Republic of China in 1949. the Communist Party of China （CPC）, China＇s ruling Party, has maintained friendly relations with its counterparts in African countries, greatly promoting cooperation in various fields between China and Africa.
基金the support provided by the National Science and Technology Support Program of China(No.2012BAA02B00)
文摘The CFD-DEM model was developed to simulate solid exchange behavior between two half beds in a bench-scale two-dimensional dual-leg fluidized bed （DL-FB）. Power spectrum density （PSD） analysis was applied to obtain the dominant frequency （F） of the simulated differential particle number （APLR） between the two half beds. Effects of fluidization velocity （u） and bed material inventory （H） on the solid exchange behavior were studied using the CFD-DEM model. Not only snapshots of the simulated particle flow patterns using the OpenGL code but also the dominant frequency of APLR was similar to the experimental results. The simulation results show that higher fluidization velocity assists the exchange of more particles between the two half beds, but the dispersion of clusters on the bed surface into single particles decreases the cluster exchange frequency. A greater bed material inventory results in more intense cluster exchange. The cluster exchange frequency decreases with an increase of the bed material inventory.
