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美国政府关于高技术发展对策及其借鉴意义
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作者 郝凤霞 《新乡师范高等专科学校学报》 1999年第4期40-42,共3页
据报导,美国国内国民生产总值自1991年春季以来持续增长,目前仍未发现衰退迹象,这一现象引起世界各国的广泛关注。本文试图从法律、法规、规划等方面分析美国政府关于高技术发展的对策及其特点,结合我国高技术发展现状,得出对我国... 据报导,美国国内国民生产总值自1991年春季以来持续增长,目前仍未发现衰退迹象,这一现象引起世界各国的广泛关注。本文试图从法律、法规、规划等方面分析美国政府关于高技术发展的对策及其特点,结合我国高技术发展现状,得出对我国的启示和我们应该借鉴的方面。 展开更多
关键词 美国 高技术发展 对策 R&D经费 风险投资 高技术规划 法制建设 科研协调管理机构
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Simulation Analysis for Massive Deployment of Variable Renewables Employing an Optimal Power Generation Mix Model
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作者 Ryoichi Komiyama Saeko Shibata Yasumasa Fujii 《Journal of Energy and Power Engineering》 2013年第8期1604-1615,共12页
This paper develops a high time-resolution optimal power generation mix model in its time resolution of 10 minutes on 365 days by linear programming technique. The model allows us to analyse the massive deployment of ... This paper develops a high time-resolution optimal power generation mix model in its time resolution of 10 minutes on 365 days by linear programming technique. The model allows us to analyse the massive deployment of photovoltaic system and wind power generation in power system explicitly considering those short-term output variation. PV (photovoltaic) and wind output are estimated, employing meteorological database. Simulation results reveal that variable fluctuation derived from a high penetration level of those renewables is controlled by quick load following operation of natural gas combined cycle power plant, pumped-storage hydro power, stationary NAS (sodium and sulfur) battery and the output suppression control of PV and wind. It additionally turns out that the operational configuration of those technologies for the renewable variability differs significantly depending on those renewable output variations in each season and solving the seasonal electricity imbalance as well as the daily imbalance is important if variable renewables are massively deployed. 展开更多
关键词 BATTERIES power generation dispatch power generation planning power system economics power system simulation solar power generation wind power generation.
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