Africa is embracing new opportunities featured with industrialization,urbanization and regionalization.Based on co-development of‘Electricity,Mining,Metallurgy,Industry and Trade’and grids interconnection proposed b...Africa is embracing new opportunities featured with industrialization,urbanization and regionalization.Based on co-development of‘Electricity,Mining,Metallurgy,Industry and Trade’and grids interconnection proposed by Global Energy Interconnection Development and Cooperation Organization(GEIDCO),the high-quality hydropower resource of the Congo River can be exploited in large scale under the wide-range interconnected framework of African Energy Interconnection(AEI),forging a new engine for Africa economy.The transmission distance of the Congo River hydropower reaches 6,000 km at its farthest end in North Africa,which brings forth challenges to economics of proposed projects.Under this novel continental energy interconnection scheme in Africa,economics of those projects have not yet been in detail studied.This paper has implemented China’s mature engineering experiences and analytical tools of UHVDC project planning into the AEI structure,through exploring the economic behavior of ultra-long distance UHVDC projects in the scope of conductor selection in the Congo River hydropower transmission for the first time,and has provided concerned parties with a technical and analytical results of their economics comparison.This paper has chosen the D.R.Congo-Guinea±800 kV UHVDC project as a typical example.Its preliminary system planning is introduced and three types of conductor are selected for scheme comparison.Later in this paper,the transmission loss,total investment and equivalent annual cost of the project have been calculated and analyzed.In the final part,sensitivity analysis results of the annual cost to utilization hours,transmission loss,loss tariff and construction cost has been provided.展开更多
As the main part of the transmission line, the conductor is responsible for the long-distance transmission of electric energy. It should not only ensure the safe operation, but also minimize the loss. The proper selec...As the main part of the transmission line, the conductor is responsible for the long-distance transmission of electric energy. It should not only ensure the safe operation, but also minimize the loss. The proper selection of conductors is of great significance to the construction, safe operation, environmental and economic benefits of the power grid. Entering the "14th Five-Year Plan" period, peak carbon dioxide emissions, Carbon Neutralization have been listed as one of the key tasks of the next central economic work conference. It is increasingly urgent to reasonably control carbon emissions and build a low-carbon economy and ecological harmonious development. As the lifeline of the country, power transmission lines account for a large proportion of the construction scale and energy consumption. Therefore, energy conservation and emission reduction are crucial. This study considers the carbon emission index method in the annual fee usage concept, and reasonably quantifies the carbon emission into the whole operation of the project as an analysis factor. In the study, carbon emissions are integrated into the cost management of annual fee, and the optimal scheme is selected from the overall consideration of comprehensive benefits such as technology, ecological environment and economy.展开更多
基金supported by National Key Reaearch and Development Program of China(2016YFB0900900).
文摘Africa is embracing new opportunities featured with industrialization,urbanization and regionalization.Based on co-development of‘Electricity,Mining,Metallurgy,Industry and Trade’and grids interconnection proposed by Global Energy Interconnection Development and Cooperation Organization(GEIDCO),the high-quality hydropower resource of the Congo River can be exploited in large scale under the wide-range interconnected framework of African Energy Interconnection(AEI),forging a new engine for Africa economy.The transmission distance of the Congo River hydropower reaches 6,000 km at its farthest end in North Africa,which brings forth challenges to economics of proposed projects.Under this novel continental energy interconnection scheme in Africa,economics of those projects have not yet been in detail studied.This paper has implemented China’s mature engineering experiences and analytical tools of UHVDC project planning into the AEI structure,through exploring the economic behavior of ultra-long distance UHVDC projects in the scope of conductor selection in the Congo River hydropower transmission for the first time,and has provided concerned parties with a technical and analytical results of their economics comparison.This paper has chosen the D.R.Congo-Guinea±800 kV UHVDC project as a typical example.Its preliminary system planning is introduced and three types of conductor are selected for scheme comparison.Later in this paper,the transmission loss,total investment and equivalent annual cost of the project have been calculated and analyzed.In the final part,sensitivity analysis results of the annual cost to utilization hours,transmission loss,loss tariff and construction cost has been provided.
文摘As the main part of the transmission line, the conductor is responsible for the long-distance transmission of electric energy. It should not only ensure the safe operation, but also minimize the loss. The proper selection of conductors is of great significance to the construction, safe operation, environmental and economic benefits of the power grid. Entering the "14th Five-Year Plan" period, peak carbon dioxide emissions, Carbon Neutralization have been listed as one of the key tasks of the next central economic work conference. It is increasingly urgent to reasonably control carbon emissions and build a low-carbon economy and ecological harmonious development. As the lifeline of the country, power transmission lines account for a large proportion of the construction scale and energy consumption. Therefore, energy conservation and emission reduction are crucial. This study considers the carbon emission index method in the annual fee usage concept, and reasonably quantifies the carbon emission into the whole operation of the project as an analysis factor. In the study, carbon emissions are integrated into the cost management of annual fee, and the optimal scheme is selected from the overall consideration of comprehensive benefits such as technology, ecological environment and economy.
