Considering the characteristics of the UHVAC Pilot Project in China,the importance of study on electromagnetic transient overvoltage in UHVAC projects is demonstrated in this paper.Through analysis and comparison on t...Considering the characteristics of the UHVAC Pilot Project in China,the importance of study on electromagnetic transient overvoltage in UHVAC projects is demonstrated in this paper.Through analysis and comparison on the simulation programs for electromagnetic transient overvoltages,EMTP is then recommended for the UHVAC Pilot Project in China.The element models in EMTP used in simulating power frequency overvoltage and power resonance of non-entire phase operation,etc.,are introduced.The paper also points out that extra attention will be needed when simulating power frequency sequence parameters and line corona.The research outcome provides valuable references for both oversea and domestic UHVAC projects.展开更多
On June 21, the presentation ceremony for China Home textile Color Application Pilot Base took place in Rui’an Municipal Conference Center of Zhejiang province. Distinguish guests, like Mr. Yang Donghui, Vice Preside...On June 21, the presentation ceremony for China Home textile Color Application Pilot Base took place in Rui’an Municipal Conference Center of Zhejiang province. Distinguish guests, like Mr. Yang Donghui, Vice President of China National Textile and展开更多
Agricultural product price index insurance is a kind of index insurance. It avoids defects of traditional agricultural insurance,such as moral hazards,adverse selection,and high management cost. On the basis of studyi...Agricultural product price index insurance is a kind of index insurance. It avoids defects of traditional agricultural insurance,such as moral hazards,adverse selection,and high management cost. On the basis of studying agricultural product price index insurance of all areas of China,this paper analyzed characteristics of agricultural product price index insurance from object selection,product object,premium design,and policy support,and discussed feasibility of extending agricultural product price index insurance in an all-round way.展开更多
文摘Considering the characteristics of the UHVAC Pilot Project in China,the importance of study on electromagnetic transient overvoltage in UHVAC projects is demonstrated in this paper.Through analysis and comparison on the simulation programs for electromagnetic transient overvoltages,EMTP is then recommended for the UHVAC Pilot Project in China.The element models in EMTP used in simulating power frequency overvoltage and power resonance of non-entire phase operation,etc.,are introduced.The paper also points out that extra attention will be needed when simulating power frequency sequence parameters and line corona.The research outcome provides valuable references for both oversea and domestic UHVAC projects.
文摘On June 21, the presentation ceremony for China Home textile Color Application Pilot Base took place in Rui’an Municipal Conference Center of Zhejiang province. Distinguish guests, like Mr. Yang Donghui, Vice President of China National Textile and
基金Supported by the National Social Science Foundation of China(16BJY136) in 2016the Consultant Project of Chinese Academy of Engineering(07-XY-003) in 2015
文摘Agricultural product price index insurance is a kind of index insurance. It avoids defects of traditional agricultural insurance,such as moral hazards,adverse selection,and high management cost. On the basis of studying agricultural product price index insurance of all areas of China,this paper analyzed characteristics of agricultural product price index insurance from object selection,product object,premium design,and policy support,and discussed feasibility of extending agricultural product price index insurance in an all-round way.
