'Although various risks, such as policy risk, demand changing risk, market competition risk, price fluctuation risk of raw material and financial risk exist to varying degrees, the investment craze on thermal powe...'Although various risks, such as policy risk, demand changing risk, market competition risk, price fluctuation risk of raw material and financial risk exist to varying degrees, the investment craze on thermal power projects would not cool down,' an expert with China Power Engineering Consulting Group Corporation said.展开更多
By 2020, the nuclear power installed capacity in China will go up from 8700 MW in 2005 to 40,000 MW. It signifies that 30 generating units with a capacity of 1000 MW each will have been built. In fact, the development...By 2020, the nuclear power installed capacity in China will go up from 8700 MW in 2005 to 40,000 MW. It signifies that 30 generating units with a capacity of 1000 MW each will have been built. In fact, the development of nuclear power wants not merely enthusiasm. "The national policy maintains that we should take a road of localized development. This is of great benefit to the expansion of nuclear power in China. However, many people still doubt whether the manufacturing capability and level can meet the requirements of nuclear safety, and multiple introductions are not good for digestion and assimilation, so that there exist potential risks in operation, maintenance and technical support," said Zeng Qingxiong, manager of financing section, Daya Bay Financial Company, China Guangdong Nuclear Power Holding Co. Ltd (CGNPC).展开更多
A control scheme of electronic power transformer (EPT) in a three-phase four-wire distribution system, which included an input section, an isolating section and an output section, was researched under unbalanced loads...A control scheme of electronic power transformer (EPT) in a three-phase four-wire distribution system, which included an input section, an isolating section and an output section, was researched under unbalanced loads. The simple and appropriate control scheme was developed through analyzing the system requirements of the primary side and the load requirements of the secondary side. In the input section, a dual-loop control in synchronous rotating d-q coordinates was introduced, and in the output section, a dual-loop control based on instantaneous output voltage was used. Load characteristics of EPT were investigated by using Matlab/Simulink software. Simulation results showed that, with the proposed control scheme, the EPT has good performances and the sinusoidal input current and constant output voltage can be realized under both balanced and unbalanced loads.展开更多
文摘'Although various risks, such as policy risk, demand changing risk, market competition risk, price fluctuation risk of raw material and financial risk exist to varying degrees, the investment craze on thermal power projects would not cool down,' an expert with China Power Engineering Consulting Group Corporation said.
文摘By 2020, the nuclear power installed capacity in China will go up from 8700 MW in 2005 to 40,000 MW. It signifies that 30 generating units with a capacity of 1000 MW each will have been built. In fact, the development of nuclear power wants not merely enthusiasm. "The national policy maintains that we should take a road of localized development. This is of great benefit to the expansion of nuclear power in China. However, many people still doubt whether the manufacturing capability and level can meet the requirements of nuclear safety, and multiple introductions are not good for digestion and assimilation, so that there exist potential risks in operation, maintenance and technical support," said Zeng Qingxiong, manager of financing section, Daya Bay Financial Company, China Guangdong Nuclear Power Holding Co. Ltd (CGNPC).
基金This project is financed by the New Century Outstanding Talents Supporting Program of Ministry of Education and Superior Young Teachers Supporting Program of Ministry of Education.
文摘A control scheme of electronic power transformer (EPT) in a three-phase four-wire distribution system, which included an input section, an isolating section and an output section, was researched under unbalanced loads. The simple and appropriate control scheme was developed through analyzing the system requirements of the primary side and the load requirements of the secondary side. In the input section, a dual-loop control in synchronous rotating d-q coordinates was introduced, and in the output section, a dual-loop control based on instantaneous output voltage was used. Load characteristics of EPT were investigated by using Matlab/Simulink software. Simulation results showed that, with the proposed control scheme, the EPT has good performances and the sinusoidal input current and constant output voltage can be realized under both balanced and unbalanced loads.
