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Stochastic long-term hydrothermal optimization for a multireservoir system

Journal Article · · IEEE Trans. Power Appar. Syst.; (United States)
; ; ;
The problem of planning the long-term (multiyear) operation of a multireservoir hydrothermal electric power generation system is solved by a stochastic dynamic programming (SDP) algorithm using successive approximations. The hydro system model consists of a set of disjoint hydro chains each modeled by an equivalent reservoir and hydroplant. The inflow to the equivalent reservoir in each hydro chain is modeled as an independent log-normal random variable with a time correlation of lag one. The remaining river inflows in the system are modeled as a function of the equivalent reservoir inflows. Thermal unit and load curtailment cost curves are modeled as piecewise linear and convex. The successive approximations algorithm involves the solution of a 2-state stochastic dynamic programming problem for each hydro chain which has as its objective the minimization of the expected discounted production cost, plus the terminal hydro cost, subject to satisfying a number of constraints on the hydro and thermal system and the monthly demand which is represented by a load duration curve. A production-grade computer program has been developed and tested with data for a real system. Numerical results are reported for two study cases with up to eight reservoirs.
Research Organization:
Systems Control, Inc., Palo Alto, CA
OSTI ID:
6347786
Journal Information:
IEEE Trans. Power Appar. Syst.; (United States), Journal Name: IEEE Trans. Power Appar. Syst.; (United States) Vol. PAS-104:8; ISSN IEPSA
Country of Publication:
United States
Language:
English

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Related Subjects

29 ENERGY PLANNING, POLICY, AND ECONOMY
296001 -- Energy Planning & Policy-- Electric Power Generation-- (-1989)
299003* -- Energy Planning & Policy-- Unconventional Sources & Power Generation-- Other-- (-1989)
ALGORITHMS
COMPUTER CODES
COMPUTERIZED SIMULATION
DYNAMIC PROGRAMMING
HYDROELECTRIC POWER PLANTS
LOAD ANALYSIS
LOAD MANAGEMENT
MANAGEMENT
MATHEMATICAL LOGIC
MATHEMATICAL MODELS
OPERATION
PLANNING
POWER PLANTS
PROGRAMMING
SIMULATION
STOCHASTIC PROCESSES
SURFACE WATERS
WATER RESERVOIRS