Development of model reference adaptive control theory for electric power plant control applications

Technical Report · Wed Sep 15 04:00:00 EDT 1982

DOI:https://doi.org/10.2172/5246707· OSTI ID:5246707

Mabius, L. E.

The scope of this effort includes the theoretical development of a multi-input, multi-output (MIMO) Model Reference Control (MRC) algorithm, (i.e., model following control law), Model Reference Adaptive Control (MRAC) algorithm and the formulation of a nonlinear model of a typical electric power plant. Previous single-input, single-output MRAC algorithm designs have been generalized to MIMO MRAC designs using the MIMO MRC algorithm. This MRC algorithm, which has been developed using Command Generator Tracker methodologies, represents the steady state behavior (in the adaptive sense) of the MRAC algorithm. The MRC algorithm is a fundamental component in the MRAC design and stability analysis. An enhanced MRC algorithm, which has been developed for systems with more controls than regulated outputs, alleviates the MRC stability constraint of stable plant transmission zeroes. The nonlinear power plant model is based on the Cromby model with the addition of a governor valve management algorithm, turbine dynamics and turbine interactions with extraction flows. An application of the MRC algorithm to a linearization of this model demonstrates its applicability to power plant systems. In particular, the generated power changes at 7% per minute while throttle pressure and temperature, reheat temperature and drum level are held constant with a reasonable level of control. The enhanced algorithm reduces significantly control fluctuations without modifying the output response.

• Research Organization: Analytic Sciences Corp., Reading, MA (USA)
• DOE Contract Number: AC01-78ET29301
• OSTI ID: 5246707
• Report Number(s): TR-1489-3; ON: DE84005543
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
200000* -- Fossil-Fueled Power Plants
ALGORITHMS
CONTROL
ECONOMIC ANALYSIS
ECONOMICS
INPUT-OUTPUT ANALYSIS
MATHEMATICAL LOGIC
POWER PLANTS
STABILITY