Identification of exciter constants using a coherence function based weighted least squares approach
Journal
IEEE Transactions on Energy Conversion
Journal Volume
8
Journal Issue
3
Pages
460-467
Date Issued
1993
Author(s)
Abstract
Experience with exciter modeling at Ta-Kuan pumped storage plant in Taiwan is reported in this paper. To identify exciter parameters, frequency response data are first obtained by injecting wide bandwidth signals into the system. Then a modified weighted least squares (WLS) approach using a coherence function is developed to determine exciter constants. A novel feature of the proposed coherence function based WLS method is that it can eliminate measurement dependent inaccuracies by placing less weights on the measurements that are more severely corrupted by noises. Based on the established excitation system model, computer simulations are performed to examine the dynamic responses of the generating unit under small disturbance conditions and large disturbance conditions. Field test results are also provided. © 1992 IEEE
SDGs
Type
journal article