نتایج جستجو برای: hydropower generation

تعداد نتایج: 358512  

Journal: :Open research Europe 2021

The modelling of electricity systems with substantial shares renewable resources, such as solar power, wind power and hydropower, requires datasets on resource profiles high spatiotemporal resolution to be made available the energy community. Whereas resources exist for diurnal seasonal scales across all continents, this is not yet case hydropower. Here, we present a newly developed open...

2018
Yuan Si Xiang Li Dongqin Yin Ronghua Liu Jiahua Wei Yuefei Huang Tiejian Li Jiahong Liu Shenglong Gu Guangqian Wang

The hydropower system in the Upper Yellow River (UYR), one of the largest hydropower bases in China, plays a vital role in the energy structure of the Qinghai Power Grid. Due to management difficulties, there is still considerable room for improvement in the joint operation of this system. This paper presents a general LINGO-based integrated framework to study the operation of the UYR hydropowe...

Journal: :محیط شناسی 0
داوود منظور دانشیار دانشکدۀ اقتصاد، دانشگاه امام صادق مجید فرمد دکتر مهندسی برق، دانشگاه تهران، دانشکدۀ مهندسی برق وحید آریان پور کارشناس ارشد انرژی، دانشگاه صنعتی شریف، دانشکدۀ مکانیک احسان الدین شفیعی دکتر مکانیک، دانشگاه صنعتی شریف، دانشکدۀ مهندسی مکانیک

introduction despite the abundant renewable energy sources, the iranian energy sector relies almost entirely on fossil fuel energy resources. power sector is dominant source of co2emissions and responsible for about 35% of total co2 emissions in the country. additionally, long-term electricity demand of iran is expected to grow quickly, which in turn requires extensive investment to meet the gr...

2005
Nathalie Voisin Alan F. Hamlet L. Phil Graham David W. Pierce Tim P. Barnett Dennis P. Lettenmaier

The benefits of potential electric power transfers between the Pacific Northwest (PNW) and California (CA) are evaluated using a linked set of hydrologic, reservoir, and power demand simulation models for the Columbia River and the Sacramento–San Joaquin reservoir systems. The models provide a framework for evaluating climate-related variations and long-range predictability of regional electric...

Journal: :Energies 2023

To achieve the net zero emission target by 2050, Taiwan is committed to promoting solar photovoltaic and offshore wind power. However, in order ensure stable supply of renewable energy, it should actively develop low-cost mature base load energy sources, such as small hydropower. By end 2021, Taiwan’s hydropower (excluding pumped storage hydropower) had a total installed capacity 2094 MW, accou...

2006
J. Matevosyan L. Söder

In this paper a day-ahead planning algorithm for a multi-reservoir hydropower system coordinated with wind power is developed. Coordination applies to real situations, where wind power and hydropower are owned by different utilities, sharing the same transmission lines, though hydropower has priority for transmission capacity. Coordination is thus necessary to minimize wind energy curtailments ...

2001
Jay R. Lund Joel Guzman

This paper reviews a variety of derived single-purpose operating policies for reservoirs in series and in parallel for water supply, flood control, hydropower, water quality, and recreation. Such rules are useful for real-time operations, conducting reservoir simulation studies for real-time, seasonal, and longterm operations, and for understanding the workings of multi-reservoir systems. For r...

2004
Jostein Skaar

In this paper we discuss how three different public policy measures affect water storage controlled by hydropower producing firms. In particular we discuss measures to promote competition, increase transmission capacity and rationing. The analysis is conducted within the framework of an oligopoly model where 2 hydro producing firms engage in dynamic Bertrand competition. We extend this model to...

Journal: :journal of health sciences and surveillance system 0
fahime khademi department of environmental health engineering, school of health, shiraz university of medical sciences, shiraz, iran. mohammad reza samaei department of environmental health engineering, school of health, shiraz university of medical sciences, shiraz, iran. kourosh azizi department of entomology, school of health, shiraz university of medical sciences, shiraz, iran. abbas shahsavani environmental and occupational hazards control research center, shahidbeheshti university of medical science, tehran, iran & department of environmental health engineering, school of public health, shahidbeheshti university of medical science, tehran, iran hassan hashemi department of environmental health engineering, school of health, shiraz university of medical sciences, shiraz, iran. aida iraji central research laboratory, shiraz university of medical sciences, shiraz, iran.

abstract background: biogas is obtained by anaerobic decomposition of organic wastes buried materials used to produce electricity, heat and biofuels. biogas is at the second place for power generation after hydropower and in 2000 about 6% of the world power generation was allocated to biogas. biogas is composed of 40–45 vol% co2, 55–65 vol% ch4, and about 1% non-methanevocs, and non-methane vol...

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