Method and system for obtaining zero initial phase reference point of power signal sequence cosine function

Abstract

The invention relates to a method and a system for obtaining a zero-initial phase reference point of a power signal sequence cosine function. The present invention acquires the forward sequence and the defold sequence through a series of operation steps, and adds the forward sequence and the defold sequence to obtain the cosine function modulation sequence with zero initial phase. The cosine function modulation sequence obtained in the present invention avoids the influence of the problem of large initial phase changes of the signal sequence, and at the same time, the cosine function modulation sequence carries the full phase difference information of the signal sequence with a large value, which can significantly improve the sine parameter The accuracy of the calculation improves the anti-harmonic and noise interference, so the zero-initial phase reference point determined according to the cosine function modulation sequence is accurate, which is of great significance to the experimental research of electric power science and physics.

Description

technical field [0001] The invention relates to the field of electric power technology, in particular to a method for obtaining a zero-initial phase reference point of a cosine function of a power signal sequence and a system for obtaining a zero-initial phase reference point of a cosine function of a power signal sequence. Background technique [0002] In the experimental research of electric power science, the determination of the zero-initial phase reference point of the cosine function is of great significance to the experiment and research itself. In the simulation experiment research, there is no problem in determining the reference point of the zero initial phase of the cosine function. However, in the research of physical experiments, there are many difficulties in determining the reference point of the zero initial phase of the cosine function for the discretely collected data. The uncertainty of the zero initial phase reference point of the cosine function in phys...

AI Technical Summary

Problems solved by technology

However, in physical experiment research, there are various difficulties in determining the reference point of the zero initial phase of the cosine function for discretely collected data.

The uncertainty of the reference point of the zero initial phase of the cosine function in the physical experiment will affect the results of the physical experiment research

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