Employment of three-phase compact oscillator models for representing comprehensively two synchronous generator systems

The paper deals with a new representation method for analyzing the operation of a two synchronous machine system. Each represented machine is considered as a complex oscillator. The oscillator represents many of the machine properties including a voltage regulation provision. The model attained in this way is relatively compact, and yet it describes each of the phases dynamic processes directly at the line frequency.A series of simulation results which demonstrate the effect of load changes on other mechanical and electric variables in the two machine system is presented. The process of synchronization is also simulated in detail. The simulation results are compared to the results of experimental work. The similarity between experiments and simulations.suggests that the new method should be helpful in power system analysis. The main value of the method is in the analysis of relatively small generator systems where the interaction between mechanical transients and electric transients should be treated in detail. It is believed that the relatively new method which was previously employed by us mainly for investigating single machine systems is now shown to be potentially adequate for multimachine systems as well.