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A digital method and system for generating voltage waveforms of high voltage direct current thyristor converters

A technology of thyristor commutation and high-voltage direct current, applied in the field of electric power

Active Publication Date: 2021-03-02
CHINA ELECTRIC POWER RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The present invention provides a method and system for calculating the voltage waveform of a high voltage direct current thyristor converter to solve the problem of how to generate a high voltage waveform for a high voltage direct current converter

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  • A digital method and system for generating voltage waveforms of high voltage direct current thyristor converters
  • A digital method and system for generating voltage waveforms of high voltage direct current thyristor converters
  • A digital method and system for generating voltage waveforms of high voltage direct current thyristor converters

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Embodiment Construction

[0048] Exemplary embodiments of the present invention will now be described with reference to the drawings; however, the present invention may be embodied in many different forms and are not limited to the embodiments described herein, which are provided for the purpose of exhaustively and completely disclosing the present invention. invention and fully convey the scope of the invention to those skilled in the art. The terms used in the exemplary embodiments shown in the drawings do not limit the present invention. In the figures, the same units / elements are given the same reference numerals.

[0049] Unless otherwise specified, the terms (including scientific and technical terms) used herein have the commonly understood meanings to those skilled in the art. In addition, it can be understood that terms defined by commonly used dictionaries should be understood to have consistent meanings in the context of their related fields, and should not be understood as idealized or over...

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Abstract

The invention discloses a digital method for generating voltage waveforms of high-voltage direct current thyristor converters. The method includes: transforming basic existence functions to obtain six existence functions of six-pulse thyristor converters; using the trigger angle and The two parameters of the commutation overlap angle correct the 6 existence functions of the 6-pulse thyristor converter, and obtain the 12 existence functions of the corrected 6-pulse thyristor converter; using the 6-pulse thyristor converter There are 12 functions to calculate the DC terminal voltage of the DC converter; the DC terminal voltage of the 6-pulse thyristor converter and the other commutation pulse are shifted by 30° to the DC terminal voltage of the 6-pulse thyristor converter The superposition is performed to obtain the DC terminal voltage of the 12-pulse thyristor converter; and the valve voltage of the thyristor converter is calculated by using the conduction function.

Description

technical field [0001] The present invention relates to the field of electric power technology, and more specifically, to a method and system for generating a voltage waveform of a high-voltage direct current thyristor converter. Background technique [0002] Since the world's first high-voltage direct current (HVDC) converter project was put into operation in Gotland, Sweden in the 1950s, more than 100 sets of HVDC projects have been in operation at home and abroad. In order to further improve the power transmission capacity and transmission distance, several sets of UHV DC transmission projects have been put into operation in China in recent years, and my country is in the leading position in the world in terms of DC transmission technology and transmission capacity. [0003] However, since the voltage waveform in the operation of the HVDC converter is not a sine wave, but a superposition of a DC voltage and a periodic ripple voltage with a complex waveform, ordinary test ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M7/155H02M7/162
Inventor 李国富陈没李龙龙李永亮党冬李志远闫晔刘之方董勤晓余辉周玮
Owner CHINA ELECTRIC POWER RES INST