Computer Simulation of CVP Power Production for Integration With PG&E's Power System

by Konstantin Staschus, Pacific Gas and Electric Co, United States,
Sharon A. Johnson, Pacific Gas and Electric Co, United States,
Jery R. Stedinger, Pacific Gas and Electric Co, United States,
Alberto Tejada-Guibert, Pacific Gas and Electric Co, United States,

Document Type: Proceeding Paper

Part of: Computerized Decision Support Systems for Water Managers


The Central Valley Project (CVP) has an installed hydropower capacity of over 1800 MW. The project facilities and its preference power customers lie dispersed within the service territory of Pacific Gas and Electric Co. (PG&E). For power production and delivery purposes, the CVP is integrated within PG&E's power system. The integration and the ensuing contractual relationship makes complex capacity and energy accounting schemes necessary. The capacity accounting is largely based on the CVPower model, which simulates the CVP's operation with different hydrologic conditions in order to calculate its power production potential. The CVPower model is the topic of this paper. Early versions of CVPower depended on year-specific rule curves for individual reservoirs. The most recent version avoids these problems through the inclusion of a general reservoir balancing optimization module within each monthly simulation step. It also contains logic to release excess water in wet years such that the value of the power produced is maximized, and to reduce power requirements in extremely dry years such that water requirements can be met with the smallest possible impact on the value of the power produced.

Subject Headings: Computer models | Energy infrastructure | Hydro power | Hydrologic models | Electric power | Water resources | Water supply systems | Client relationships | California | United States

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