Results 191 to 200 of about 25,846 (255)

Optimal regulation control system for cascade hydropower stations

2009 International Conference on Sustainable Power Generation and Supply, 2009
A complex optimal regulation control system with three-layer structure is developed for cascade hydropower stations, including from top to bottom optimal regulation control layer, automatic water regime measuring and generation supervisor layer, economical dispatching control and automatic generation control layer.
null Rui Jun, null Chen Shou-lun
openaire   +1 more source

Research of Compensating Weights of Cascade Hydropower Stations

Applied Mechanics and Materials, 2012
The compensation benefits distribution weights model of cascade hydropower stations has been proposed. The method of compensation weights calculation has been discussed. The subjective weights in the station indexes are calculated by analytic hierarchy process and the objective weights by variance coefficient and the combination weights by Topsis.
Gan Yi Wang, Xiang Lin Wu, Hong Sheng Song   +2 more
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Evaluation on operation management of cascade hydropower stations

2011 IEEE International Conference on Industrial Engineering and Engineering Management, 2011
An evaluation framework for joint operation of cascade hydropower stations was developed in this study. This framework is helpful to evaluate the operation performance of the cascade hydropower stations in order to improve the operation level. The power benefit of the cascade hydropower stations is chosen to be the evaluation object for multipurpose ...
Y. Zheng, X. D. Fu, J. H. Wei, X. Li
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Optimal Sequencing of Development for Hydropower Stations in Cascade

Journal of Water Resources Planning and Management, 1989
The sequencing problem for hydropower station development is a multi-dimensional problem involving space-time decisions. In this paper, a mathematical model that uses a combination of dynamic programming and mixed-integer programming is developed, and an efficient algorithm for its use in optimal sequencing problems is presented.
Yonghua Wan, Shiyun Huang, Miguel A. Marino   +2 more
openaire   +1 more source

Cumulative effects of cascade hydropower stations on total dissolved gas supersaturation

Environmental Science and Pollution Research, 2018
Elevated levels of total dissolved gas (TDG) may occur downstream of dams during the spill process. These high levels would increase the incidence of gas bubble disease in fish and cause severe environmental impacts. With increasing numbers of cascade hydropower stations being built or planned, the cumulative effects of TDG supersaturation are becoming
Qian, Ma, Ran, Li, Jingjie, Feng, Jingying, Lu, Qin, Zhou   +4 more
openaire   +2 more sources

Data‐driven multi‐time scale robust scheduling framework of hydrothermal power system considering cascade hydropower station and wind penetration

IET Generation, Transmission & Distribution, 2019
A data-driven multi-time scale robust scheduling model for a wind–hydro–thermal power system is presented in this study, according to the characteristic that wind power prediction accuracy increases with the decrease of the time scale.
Wenting Hou, Hua Wei, Rujie Zhu
semanticscholar   +1 more source

Regulation capability of small cascade hydropower stations for photovoltaic generation

Journal of Renewable and Sustainable Energy, 2020
The stochasticity of photovoltaic (PV) generation output makes it necessary to smooth the output using other flexible power sources to realize the scale development of PV power. Small cascade hydropower stations (SCHSs) are also widely distributed in space, like PV generation.
Yanmei Zhu, Shijun Chen, Guangwen Ma, Weibin Huang, Xiaoyan Han, Lijie Ding   +5 more
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Time Series Decision-making of Cascade Hydropower Station Development Based on Prospect Theory

JOURNAL OF ENGINEERING STUDIES, 2019
: To make a reasonable decision on the development timing of cascade hydropower stations, the optimal dispatching model and prospect theory are synthetically applied to establish a development timing decision model based on psychological preference ...
Gangsong Dong, Xiong Li, Ji-zhao Lu, Peilin Cai   +3 more
semanticscholar   +1 more source

Short term hydropower dispatching optimization of cascaded hydropower stations based on two-stage optimization

2010 2nd International Conference on Industrial and Information Systems, 2010
A two-stage optimization strategy and its models for short-term hydropower dispatching optimization is developed to solve unit commitment and load distribution problem with unit commitment optimization sub-model and min water consumption sub-model. Moreover, improved ant algorithm with new selection mechanism and iteration mechanism are introduced for ...
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Analysis on Electricity Pricing Mechanism for Cascade Hydropower Stations in China

Applied Mechanics and Materials, 2011
For the large cascaded hydropower stations, an electricity pricing mechanism of cascade hydropower stations on large basins is proposed. The main idea is that the electricity generated by different hydropower stations on the same river can be sold to the Grid Corporation with the same price.
Yang Chen, Yong Zhao, Jing Rui Zhang
openaire   +1 more source