Identification and optimal load-frequency control of interconnected power systems
Abstract
A method is presented for the estimation of the random load spectra from tie-line power and frequency measurements under normal operation of interconnected power systems. The estimated load fluctuation spectra were then used to optimize the load-frequency controller parameters based on a quadratic performance criterion. Performed computation analysis of recorded frequency data supplied by an electric utility company showed that the frequency autocorrelation function exhibits characteristics of Poisson distribution. This substantiates the necessity of treating load disturbances as random processes for the search of optimal control. The parameter optimization technique presented has the advantage of enabling one to choose a set of free load-frequency controller parameters for the widest stability margin.
- Publication:
-
Ph.D. Thesis
- Pub Date:
- April 1977
- Bibcode:
- 1977PhDT........58K
- Keywords:
-
- Electric Power Plants;
- Electrical Engineering;
- Loads (Forces);
- Power Lines;
- Operations Research;
- Optimization;
- Random Loads;
- Utilities;
- Electronics and Electrical Engineering