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Flexible dc converter station harmonic resonance risk assessment method, device and storage medium

A flexible DC and risk assessment technology, applied in the field of power electronics, can solve problems such as the quantitative assessment of harmonic resonance risks in flexible DC converter stations

Active Publication Date: 2019-01-15
CHINA SOUTHERN POWER GRID COMPANY +1
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AI Technical Summary

Problems solved by technology

However, there is currently no relevant technical method to quantitatively evaluate the harmonic resonance risk of the flexible HVDC converter station

Method used

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  • Flexible dc converter station harmonic resonance risk assessment method, device and storage medium
  • Flexible dc converter station harmonic resonance risk assessment method, device and storage medium
  • Flexible dc converter station harmonic resonance risk assessment method, device and storage medium

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Embodiment Construction

[0044] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0045] see figure 1 , which is a flow chart of a method for evaluating a harmonic resonance risk of a flexible DC converter station provided by an embodiment of the invention; a method for evaluating a harmonic resonance risk of a flexible DC converter station includes:

[0046] S100: collecting historical operation information of the flexible DC converter station;

[0047] S200: According to the historical operation information, determine multiple maintenance mod...

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Abstract

A method for evaluating harmonic resonance risk of flexible DC converter station, a device and storage medium are provided. By scanning the harmonic impedance of each maintenance mode in the frequencyband of interest, the harmonic impedance amplitude and phase angle of each overhaul mode at each scanning frequency point are obtained, and the maximum and minimum harmonic impedance amplitudes and phase angles of each scanning frequency point and the maximum and minimum harmonic impedance amplitudes and phase angles of each scanning frequency point are calculated, and the harmonic impedance amplitude characteristic region and phase angle characteristic region of the system side are obtained. The harmonic impedance characteristics of flexible DC converter station are calculated, and the amplitude characteristic curve and phase angle characteristic curve of harmonic impedance at converter station side are obtained. Judging the harmonic impedance amplitude characteristic curve of the converter station side and the harmonic impedance amplitude characteristic region of the system side, whether the phase angle characteristic curve of harmonic impedance of converter side coincides with thephase angle characteristic region of harmonic impedance of system side at the same frequency point, in order to determine whether there is harmonic resonance risk at the frequency point, and to realize harmonic resonance risk assessment of flexible DC converter station.

Description

technical field [0001] The present invention relates to the field of power electronics technology, in particular to a method, device and storage medium for harmonic resonance risk assessment of a flexible DC converter station. Background technique [0002] In recent years, with the rapid development of power electronics technology, the application of power electronic equipment in the power industry has become increasingly popular, and these equipment distort and distort the voltage and current waveforms in the system, resulting in the generation of a large number of harmonics, resulting in more and more harmonics. wave pollution. In the past ten years, with the commissioning of conventional DC, flexible DC, hybrid DC, STATCOM (Static Synchronous Compensator) and other large-scale power electronic equipment, the harmonic problem in the main transmission network has become more prominent. For conventional DC, in order to control the harmonics generated by the DC converter sta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06F17/50
CPCG06F30/20G06Q10/0635
Inventor 刘洪涛周挺辉
Owner CHINA SOUTHERN POWER GRID COMPANY
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