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Energies 2012, 5(5), 1413-1432; doi:10.3390/en5051413
Article

Finding Multiple Optimal Solutions to Optimal Load Distribution Problem in Hydropower Plant

1,* , 2,3, 2 and 4
Received: 29 March 2012 / Revised: 6 May 2012 / Accepted: 8 May 2012 / Published: 15 May 2012
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Abstract

Optimal load distribution (OLD) among generator units of a hydropower plant is a vital task for hydropower generation scheduling and management. Traditional optimization methods for solving this problem focus on finding a single optimal solution. However, many practical constraints on hydropower plant operation are very difficult, if not impossible, to be modeled, and the optimal solution found by those models might be of limited practical uses. This motivates us to find multiple optimal solutions to the OLD problem, which can provide more flexible choices for decision-making. Based on a special dynamic programming model, we use a modified shortest path algorithm to produce multiple solutions to the problem. It is shown that multiple optimal solutions exist for the case study of China’s Geheyan hydropower plant, and they are valuable for assessing the stability of generator units, showing the potential of reducing occurrence times of units across vibration areas.
Keywords: hydropower; optimal load distribution; multiple optimal solutions; dynamic programming hydropower; optimal load distribution; multiple optimal solutions; dynamic programming
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Liu, P.; Nguyen, T.-D.; Cai, X.; Jiang, X. Finding Multiple Optimal Solutions to Optimal Load Distribution Problem in Hydropower Plant. Energies 2012, 5, 1413-1432.

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