Modeling and Testing of Valley Steam Plant Supplemental Excitation Control System

A computer model and small disturbance response of the Los Angeles Department of Water and Power Valley Steam Plant is reported. Operating equipment tests determined the generator voltage regulator computer model. The generator voltage regulator computer model is tested with and without supplementary control under various loading conditions. On-line test of the Valley Steam Plant verified the operating deficiencies indicated by the computer model. Supplementary excitation control was found to have a beneficial effect on intertied network operation, but may be detrimental with certain network configurations.