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This paper presents a nonlinear adaptive excitation control scheme to enhance the dynamic stability of multimachine power systems. The proposed controller is designed based on the adaptive backstepping technique where the mechanical power input to the generators and the damping coefficient of each generator are considered as unknown. These unknown quantities are estimated through the adaption laws...
This paper presents an analytical aggregation method for generator and its excitation system using structure preserving technique. It exactly considers the voltage deviations resulted from aggregating generators moved to the common bus. The parameters of the equivalent generator and its excitation systems are calculated directly in a non-iterative way. And in this paper, excitation systems of different...
Building an equivalent model of small and mediumsized hydropower generator group is a practical method carried out for dynamic analysis of water electricity grid. Excitation and governor system have prominent influences on the precision of the equivalent model. This paper presents a method to build a dynamic equivalent model of hydropower generator units containing excitation and governing system,...
An improved time-domain online dynamic equivalent method is presented, which is suitable to shipboard power systems (SPS) and based on the coherency technique. It preserves the structure of the generator, excitation system and governor system, and the time-domain non-iterative algebraic operations process is used to calculate equivalent parameters. Sixth-order generator equation is used to reduce...
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