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Ove Wolfgang Arne Haugstad Birger Mo Anders Gjelsvik Ivar Wangensteen Gerard Doorman 《Energy》2009,34(10):1642
The Norwegian Energy Act that came into force in 1991 deregulated the electricity market and removed the former obligation power companies had to supply electricity to the geographical area they were responsible for. Hence producers can supply electricity on the basis of profitability. In 2007 the Energy Act was evaluated by the Government. As a part of this, a study concerning hydro reservoir handling before and after deregulation was carried out by SINTEF. Public statistics show that average hydro reservoir levels measured in per cent of reservoir capacity have been reduced after 1990. We have used the power-market model EMPS1 (EFI's Multi-area Power-market Simulator) to analyze if this reduction can be explained by natural variation in climatic variables or by structural changes that have occurred after 1990. Simulation results show that the reduced reservoir levels cannot be explained by natural variation in climatic variables. Structural changes such as increased transmission capacities can, however, explain some of the reduction. Our study does not indicate that the present reservoir handling gives reservoir levels that are too low. In this paper we also describe the stochastic dynamic optimization problem for long-term hydropower scheduling, and we explain how this problem actually is solved by the EMPS model. 相似文献
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地层倾角对深层薄互层油藏脱气生产阶段产量的影响 总被引:1,自引:1,他引:0
海南3块是辽河油区“九五”期间的重点产能建设区块。通过建立地层倾角对薄互层油藏生产的影响模型,进行生产历史拟合,找出了地层倾角对海南3块油井生产的影响规律,据此提出了油藏管理和工艺技术试验的建设性意见。 相似文献
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韩利凯 《数字社区&智能家居》2006,(4):209-209,217
从课程建设的目标、教学内容、教师队伍和教材建设、教学方法、实践环节等方面阐述了对计算机专业核心课程《数据结构》精品课建设的研究,提出了以教师为主导,以学生为主体,优化教学,深入改革的内容和方法。 相似文献
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塔里木灌区水库群实时调度研究 总被引:1,自引:0,他引:1
为缓和塔里木灌区引水与塔里木河的综合治理这一矛盾,以大系统分解协调技术与动态规划相结合的方法为基础建立了适合本灌区的自适应实时调度模型。为灌区水库实际控制应用提供了理论依据,对塔河的治理具有重要的现实意义。 相似文献
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V. A. PATTINSON BSc PhD D. P. BUTCHER BA Cert Ed PhD J. C. LABADZ BSc PhD 《Water and Environment Journal》1994,8(3):298-307
The problems of water-colour management in peatland catchments are discussed. Colour may be managed in three areas of the reservoir catchment system: on the catchment itself, in the channel/conduit system and within the reservoir. Whilst a number of workers have considered the management of catchment areas and some have evolved tributary turnout strategies, no previous research has considered the role of the reservoir in the amelioration or enhancement of water colour. The management of water colour at Thornton Moor catchment (near Bradford) is described. In this catchment a staged approach has been adopted, with colour being managed in an integrated manner at three stages along the catchment/conduit/reservoir system. 相似文献