Optimal scheduling of large hydrothermal power systems
In this paper we present a new algorithm to find the optimal unit commitment and economic dispatch (UC/D) for a large hydrothermal power system. Mathematically, this is a large nonlinear, mixed integer optimization problem involving over 16,800 integer variables for a system having 100 thermal units with a 1-week scheduling horizon. We use a dual programming approach to solve a separate optimal control problem for each thermal unit and for each set of coupled hydro units. The algorithm has been tested on a 100 thermal unit/6 hydro unit system having a 168-hour scheduling period, and will find solutions that are within 0.1 to 0.25 percent of the optimal dual cost. We report computational results for a system modeled after the New York Power Pool.
- Research Organization:
- Alphatech, Inc., Burlington, MA
- OSTI ID:
- 5960550
- Journal Information:
- IEEE Trans. Power Appar. Syst.; (United States), Journal Name: IEEE Trans. Power Appar. Syst.; (United States) Vol. PAS-104:2; ISSN IEPSA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
296000* -- Energy Planning & Policy-- Electric Power
ALGORITHMS
CONTROL
ENERGY SYSTEMS
HYDROELECTRIC POWER PLANTS
INTERCONNECTED POWER SYSTEMS
LOAD MANAGEMENT
MANAGEMENT
MATHEMATICAL LOGIC
OPTIMAL CONTROL
OPTIMIZATION
POWER PLANTS
POWER POOLING
POWER SYSTEMS
SCHEDULES
THERMAL POWER PLANTS