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Sub/Supersynchronous Harmonic Parameter Identification Method, Device, Equipment and Medium

A parameter identification and super-synchronization technology, applied in the field of power system, to achieve the effect of reducing impact, meeting measurement requirements, and high precision

Active Publication Date: 2022-03-18
GUANGZHOU POWER SUPPLY BUREAU GUANGDONG POWER GRID CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Based on this, it is necessary to provide a sub / super synchronous harmonic parameter identification method and a sub / super synchronous harmonic parameter identification device for the technical problem that the FFT algorithm in the traditional technology cannot realize sub / super synchronous harmonic parameter identification with high precision , computer devices and computer readable storage media

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  • Sub/Supersynchronous Harmonic Parameter Identification Method, Device, Equipment and Medium
  • Sub/Supersynchronous Harmonic Parameter Identification Method, Device, Equipment and Medium
  • Sub/Supersynchronous Harmonic Parameter Identification Method, Device, Equipment and Medium

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[0050] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.

[0051] In one embodiment, such as figure 1 As shown, a method for identifying sub / supersynchronous harmonic parameters is provided, the method includes the following steps:

[0052] Step S110, acquiring a power signal.

[0053] Specifically, the power signal in the grid is acquired. Due to the different electronic equipment and power generation mechanism used in new energy power generation and direct current transmission, sub / super synchronous harmonic components are introduced into the power grid, and the collected power signals in the power grid have the introduced sub...

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Abstract

The present application relates to a method for identifying sub / supersynchronous harmonic parameters, a device for identifying sub / supersynchronous harmonic parameters, computer equipment, and a computer-readable storage medium. The method includes obtaining a power signal; discretizing the power signal to obtain discrete power signal; use windowed interpolation FFT to process the discrete power signal to obtain the amplitude parameter and frequency parameter of the sub / supersynchronous harmonic in the power signal; and use apFFT to process the discrete power signal to obtain the sub / supersynchronous harmonic in the power signal The phase parameters of the harmonics. The frequency parameters, amplitude parameters and phase parameters of the sub / super synchronous harmonics obtained by the above method have high accuracy, so as to meet the measurement requirements of power system oscillation detection, and can effectively reduce the influence of noise and other interference sources on the recognition accuracy.

Description

technical field [0001] The present application relates to the technical field of power systems, and in particular to a method for identifying sub / supersynchronous harmonic parameters, a device for identifying sub / supersynchronous harmonic parameters, computer equipment, and a computer-readable storage medium. Background technique [0002] At present, new energy represented by wind energy and photovoltaics is developing rapidly. The power generation mode under the background of new energy has the advantages of low operation and maintenance costs, flexible installation scale and renewable. Compared with the traditional mode, new energy power generation shows unique and excellent performance, but at the same time it will also bring challenges to the safe and stable operation of the power grid. Due to the difference in power electronic equipment and power generation mechanism used in new energy power generation and direct current transmission, the static var compensator and othe...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/14G01R23/16
CPCG06F17/142G01R23/16
Inventor 张超马永龙骆杰平黄健何吉彪肖铭杰邱衍江王维庆王海云欧阳波
Owner GUANGZHOU POWER SUPPLY BUREAU GUANGDONG POWER GRID CO LTD