Optimization for Operation and Design of Solar-Hydro Pump Energy Storage Using GAMS

Abstract:

Mae Sariang is remote area about 200 kilometers from main substation, which creates several problems of power system operation, specially losses and reliability. This paper studies the optimize operation and design sizing of lower reservoir and pump station for hydro pump energy storage in order to maximize profit. The system is modelled using GAMS. Data in analysis are based on load, power generation from solar farm, natural stream flowed profile in Mae Sariang area. From the simulation results, the optimized size of hydro pump storage should be 6.6 MW, the size of pump at 2.07 MW, the lower reservoir volume capacity at least 20,731 cubic meter. The maximum profit is 56.45 million baht per year and optimized operation results in winter season have the excess energy will be used to pump the water to upper reservoir. Summer season the power system has to import power from grid and lower profit more than other season. Rainy season the power system can use power from hydro pump system as hydro power plant without drawing from the grid and best profit more than other seasons. Natural stream is important to sensitivity analyze it is the important variables that greatest profit. If in upstream problems with little rainfall, forests were destroyed. They will have problem solve in the future.

• Periodical: Applied Mechanics and Materials (Volume 781)
• Pages: 346-350
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.781.346
• Online since: August 2015
• Authors: Chalermchat Mekmuangthong*, Suttichai Premrudeepreechacharn
• Keywords: Energy Storage, Optimization Problem, Solar–Hydro Generation, Solar-Hydro Power

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