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Research on Cascade Reservoirs’ Short-Term Optimal Operation under the Effect of Reverse Regulation

1
School of Renewable Energy, North China Electric Power University, Beijing 102206, China
2
Overseas Exam Service Center, Shijiazhuang Information Engineering Vocational College, Shijiazhuang 050035, China
*
Author to whom correspondence should be addressed.
Water 2018, 10(6), 808; https://doi.org/10.3390/w10060808
Received: 7 May 2018 / Revised: 2 June 2018 / Accepted: 4 June 2018 / Published: 19 June 2018
(This article belongs to the Special Issue Adaptive Catchment Management and Reservoir Operation)
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Abstract

Currently research on joint operation of a large reservoir and its re-regulating reservoir focuses on either water quantity regulation or water head regulation. The accuracy of relevant models is in need of improvement if the influence of factors such as water flow hysteresis and the aftereffect of tail water level variation are taken into consideration. In this paper, given the actual production of Pankou-Xiaoxuan cascade hydropower stations that combines two operation modes (‘electricity to water’ and ‘water to electricity’), a coupling model of their short-term optimal operation is developed, which considers Xiaoxuan reservoir’s regulating effect on Pankou reservoir’s outflow volume and water head. Factors such as water flow hysteresis and the aftereffect of tail water level variation are also considered to enhance the model’s accuracy. The Backward Propagation (BP) neural network is employed for precise calculation of the downstream reservoir’s inflow and the upstream reservoir’s tail water level. Besides, we put forth Accompanying Progressive Optimality Algorithm (APOA) to solve the coupling model with aftereffect. An example is given to verify the scientificity of the proposed model and the advantages of APOA. Through analysis of the model calculation results, the optimal operation rules of the cascade reservoirs are obtained in terms of water quantity regulation and water head regulation, which can provide scientific reference for cascade reservoirs’ optimal operation. View Full-Text
Keywords: reverse regulation; coupling model; aftereffect; accompanying progressive optimality algorithm reverse regulation; coupling model; aftereffect; accompanying progressive optimality algorithm
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Ji, C.; Yu, H.; Wu, J.; Yan, X.; Li, R. Research on Cascade Reservoirs’ Short-Term Optimal Operation under the Effect of Reverse Regulation. Water 2018, 10, 808.

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