Results 21 to 30 of about 440 (177)

Preliminary study on the exploitation plan of the mega hydropower base in the lower reaches of Congo River

open access: yesGlobal Energy Interconnection, 2020
There have been few studies on the hydropower exploitation plan for sections beyond the Inga hydropower project (HPP) in the lower reaches of the Congo River.
Chuanyu Deng, Fulong Song, Zhengxi Chen
doaj   +1 more source

A long-term intelligent operation and management model of cascade hydropower stations based on chance constrained programming under multi-market coupling

open access: yesEnvironmental Research Letters, 2021
Under the medium- and long-term electric markets, cascaded hydropower stations face a series of practical challenges due to the uncertainty of inflow and market price.
Jia Lu   +3 more
doaj   +1 more source

Production Planning of Cascaded Hydropower Stations using Approximate Dynamic Programming

open access: yesIFAC-PapersOnLine, 2023
We formulate the day-ahead bidding problem for a hydropower producer having several hydropower plants residing in a river basin. We present a novel approach inspired by Dynamic programming with approximations in value and policy space by neural networks.
Marcial, Alexander, Perninge, Magnus
openaire   +2 more sources

Study on Optimal Operation of Hydropower Station Group Based on New Electricity Reform and Deviation Assessment

open access: yesMATEC Web of Conferences, 2018
The new electricity system reform has brought power generation companies into the market, and the scheduling target of cascade hydropower stations has been transformed from maximizing power generation to maximizing revenue.
Zhu Yanmei   +5 more
doaj   +1 more source

Optimal Daily Operation of Cascade Hydropower Stations

open access: yesJournal of Water Resources Research, 2014
采用以水定电和以电定水两种运行方式,分别以发电量最大和总耗水量最小为目标函数,建立了梯级水电站群日优化调度模型,并采用动态规划方法进行求解。使用梯级水电站群日发电资料和径流资料(2013年7月~12月)的应用检验结果表明,优化调度较实际调度提高发电量约0.67亿kW·h(增加11.54%)和减少耗水量0.26亿m3(减少−0.89%),发电保证率由92%提高到100%,显著提高了水电站群的发电效益。Daily operation models for cascade hydropower stations were proposed and developed in this paper.
openaire   +1 more source

Study on the Variation Law of Water Consumption Rate of Cascade Hydropower Station under Different Conditions

open access: yesEnergies
The water consumption rate for hydropower station power generation is an important index of the economic operation of hydropower stations, which has been widely considered and applied in the production practice of hydropower stations and has great ...
Xueshan Ai   +6 more
doaj   +1 more source

Preliminary Exploration of Establishing a Spot Quotation Alliance for Cascade Hydropower Stations

open access: yesIOP Conference Series: Earth and Environmental Science, 2021
Abstract For the spot electricity market, the quotation combining the hydropower stations is more resistant to uncertainties of runoff and spot price in market bidding. Therefore, it is of great significance to set up a spot quotation system for these hydropower stations.
Yi Sun   +5 more
openaire   +1 more source

Fish Migration Through Ship Locks at the Danube River, Austria

open access: yesRiver Research and Applications, EarlyView.
ABSTRACT Longitudinal connectivity in the Austrian section of the Danube has improved over the last three decades thanks to the progressive installation of fish passage facilities at hydropower plants. However, navigation locks which are present at all barrages remain poorly quantified with respect to their role in fish migration.
Walter Reckendorfer   +5 more
wiley   +1 more source

Adaptive temporal transformer method for short-term wind power forecasting considering shift in time series distribution

open access: yesAIP Advances
In wind power prediction, the input probability distributions in the different sub-periods are shifted owing to the strong randomness of the input features, such as wind speed and direction.
Dan Li   +5 more
doaj   +1 more source

Vulnerability to Dams of the Last Undammed Large Rivers of Southeast Asia

open access: yesRiver Research and Applications, EarlyView.
ABSTRACT The vast majority of large Eurasian rivers are regulated by hydropower dams, but some have survived as free‐flowing rivers so far in the Arctic and along stretches of the Myanmar coast. There, the Ayeyarwady (Irrawaddy) and Salween Rivers, two of the largest rivers of Southeast Asia, provide a huge amount of sediment, nurturing floodplains and
Gruel Charles‐Robin   +1 more
wiley   +1 more source

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