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WAVE ANALYSIS OF THE TRANSIENT PROCESS OF MACHINE—NETWORK IN ELECTRIC POWER SYSTEMS

Dai Jiazhen Fang Fuqi (South China University of Technology,Guangzhou)  
This paper presents a method which applies both discreate fourier transform (DFT) and curve fitting technique to analyze the wave of the transient process of machine-network in electric power system.Direct current component and a set of decaying alternating current components with different frequencies are usually presents in such transient processes.It applies DFT to get the angular frequency,and the linear curve fitting method to find the decay constant,the amplitude and the initial phase of each component. Hooke-Jeave method is adopted for the optimal processing for all parameters.Comparing with the convention harmonic analysis method has the superiarity of high precision and wide adaptability.
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