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Digital method and system used for generating voltage waveform of high-voltage direct current thyristor converter

A thyristor commutation and voltage waveform technology, applied in the field of electric power

Active Publication Date: 2018-01-19
CHINA ELECTRIC POWER RES INST +1
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  • Abstract
  • Description
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  • 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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  • Digital method and system used for generating voltage waveform of high-voltage direct current thyristor converter
  • Digital method and system used for generating voltage waveform of high-voltage direct current thyristor converter
  • Digital method and system used for generating voltage waveform of high-voltage direct current thyristor converter

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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 used for generating voltage waveform of a high-voltage direct current thyristor converter. The method comprises the steps of performing conversion of a basic existence function to obtain six existence functions of a 6-pulsation thyristor converter; performing correction of the six existence functions of the 6-pulsation thyristor converter by two parametersof a trigger angle and a phase communicating overlapping angle to obtain 12 existence functions of the corrected 6-pulsation thyristor converter; calculating the direct current end voltage of the direct current converter by the 12 existence functions of the 6-pulsation thyristor converter; performing superposition between the direct current end voltage of the 6-pulsation thyristor converter and the direct current end voltage of the other 6-pulsation thyristor converter with a phase communicating pulse phase shifting angle of 30 degrees to obtain the direct current end voltage of a 12-pulsationthyristor converter; and calculating the valve voltage of the thyristor converter by a 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 ...

Claims

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Application Information

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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
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