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Application method, device of mixed-base FFT (Fast Fourier Transform) in power system, and equipment and medium

A power system and hybrid-based technology, applied in the field of data processing, can solve problems such as slow processor calculation speed and inability to meet real-time requirements, and achieve the effect of reducing computing pressure

Pending Publication Date: 2021-10-29
BEIJING ESD POWER COMM
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Problems solved by technology

[0004] The embodiment of the present application provides an application method, device, equipment and medium of a mixed-base FFT in a power system, which can solve the problem that the existing processor has a slow calculation speed and cannot meet the real-time requirements in the calculation power system

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  • Application method, device of mixed-base FFT (Fast Fourier Transform) in power system, and equipment and medium
  • Application method, device of mixed-base FFT (Fast Fourier Transform) in power system, and equipment and medium
  • Application method, device of mixed-base FFT (Fast Fourier Transform) in power system, and equipment and medium

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[0034] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0035] The application method of the mixed-base FFT in the power system provided by the embodiment of the present application can be applied to the technical field of data processing, such as scenarios such as calculating power quality data by using a power quality analyzer in actual product development. However, the most important and time-consuming application in the above scenarios is the calculation of power quality data. Therefore, how to calculate power quality data accurately and quickly is a very important technical issue. To solve this technical problem, an embodiment of the present application provides an application method of a mixed-radix FFT in...

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Abstract

The embodiment of the invention provides an application method and device of mixed-base FFT in a power system, equipment and a medium. The method comprises the following steps: when electric energy quality data in an electric power system is sampled, determining the number of total sampling points according to sampling frequency and the number of preset sampling points of single-cycle waves in harmonics, and representing the number of the total sampling points as a positive integer obtained by multiplying the power of 2 by the power of non-2; and calculating data collected by sampling points with the number of power of 2 by adopting a mixed-base fast Fourier transform algorithm, and calculating data collected by sampling points with the number of positive integers which are not the power of 2 by adopting a discrete Fourier transform algorithm. The problem that an existing processor is low in calculation speed and cannot meet the real-time requirement in a calculation power system can be solved, and the effect of relieving the calculation pressure of the processor is achieved.

Description

technical field [0001] Embodiments of the present application relate to the technical field of data processing, and more specifically, relate to an application method, device, device and medium of a mixed-radix FFT in a power system. Background technique [0002] In the power system, when it is necessary to calculate electrical parameters such as current, voltage, and power, it is generally necessary to sample 2 n sampling points for calculation with the FFT algorithm. FFT, fast Fourier transform (fast Fouriertransform), that is, the use of computers to calculate discrete Fourier transform (DFT) is a general term for efficient and fast calculation methods. If you need to calculate the interharmonic with 5Hz resolution, you need to take the data of 10 cycles, because the cycle is 2 n sampling points, the sampling points of 10 cycles are 2 n ×10, at this time because it is not 2 n Sampling points cannot be directly calculated using the Fast Fourier Transform, only the Disc...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00
CPCG01R31/00
Inventor 辛剑明李伟孙晓宇孟庆朴
Owner BEIJING ESD POWER COMM
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