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High-voltage direct current converter

一种高压直流输电、变换器的技术，应用在交流功率输入变换为交流功率输出、输出功率的转换装置、不可逆的交流功率输入变换为直流功率输出等方向，能够解决变换器损失高等问题，达到容易维护、减少系统价格、减少变换器损失的效果

Active Publication Date: 2015-12-16
KOREA ELECTRIC POWER CORP
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

However, the above-mentioned voltage source HVDC transmission system has the disadvantage that the loss of the converter is higher than that of the current source HVDC transmission system

Method used

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Embodiment Construction

[0042] Hereinafter, an embodiment of the converter for HVDC transmission according to the present invention will be described with reference to the drawings.

[0043] In this process, for clarity and convenience of description, the thickness of lines or the size of structural elements shown in the drawings may be exaggerated. In addition, the terms described later are terms defined in consideration of their functions in the present invention, and the above terms may be different according to the user's intention or custom. Therefore, these terms should be defined based on the entire content of this specification.

[0044] image 3 It is an illustration diagram showing a converter topology of a HVDC power transmission system according to an embodiment of the present invention.

[0045] Such as image 3 As shown, the converter topology of the HVDC power transmission system according to an embodiment of the present invention is formed by connecting a 12-pulse diode rectifier 2...

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Abstract

The present invention relates to a high-voltage direct current (HVDC) converter comprising: a 12-pulse diode rectifier having two three-phase bridge diode rectifiers connected in series to rectify, to 12 pulses, alternating current (AC) power inputted from a point of connection on the sea; and a voltage-source converter connected in series to a lower end of the 12-pulse diode rectifier, wherein the voltage-source converter controls a voltage of the AC power inputted from the point of connection on the sea and a DC link voltage of the voltage-source converter.

Description

technical field [0001] The present invention relates to converters for high-voltage direct current transmission, and in more detail, to systems for transmitting power from offshore to onshore systems by using a converter topology consisting of a 12-pulse diode rectifier and a voltage source converter (VSC: Voltage Source Converter) in series. Converters for HVDC transmission of electricity generated by side wind power plants. Background technique [0002] In recent years, with the necessity of protecting the power system and the growing concern for environmental issues, high-voltage direct current (HVDC, High Voltage Direct Current) power transmission technology has attracted attention. The above-mentioned high-voltage direct current transmission provides multiple advantages such as cost, reduced installation area, easy connection with new renewable energy sources, high stability, and improved power quality. [0003] The structure of the above-mentioned HVDC power transmiss...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M7/12H02M7/04H02M7/02H02J3/36
CPCH02J3/36H02M7/10H02M7/25Y02E60/60H02M7/02H02M7/04H02M7/12H02M1/12H02M5/458
Inventor 金灿起金镇伶李东春阮清海
Owner KOREA ELECTRIC POWER CORP
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