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Power transmission system and power supply device thereof

A technology of power supply device and power transmission system, which is applied in the field of remote power transmission and can solve problems such as inability to black start

Pending Publication Date: 2020-07-14
GUANGDONG UNLIMITED POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For this reason, the present invention proposes a power supply device for a power transmission system. The power supply device for the power transmission system has a simple structure and solves the problem of being unable to black start because there is no external auxiliary power supply

Method used

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  • Power transmission system and power supply device thereof
  • Power transmission system and power supply device thereof
  • Power transmission system and power supply device thereof

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Embodiment Construction

[0032] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0033] In the description of the present invention, if there are descriptions of first, second, third, fourth, etc., it is only for the purpose of distinguishing technical features, and it cannot be understood as indicating or implying relative importance or implicitly indicating the indicated The number of technical features or implicitly indicates the sequence of the indicated technical features.

[0034] In the description of the present invention, unless otherwise clearly defined, terms such as setting and connecting should be unders...

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Abstract

Provided is a power supply device of a power transmission system. A converter station energy storage device is used for standby power supply, so that the normal operation of the control system of a converter station under the condition of power loss of a power generation field can be ensured; a power generation and energy storage device is used for standby power supply, it can be guaranteed that black start can be achieved on the premise that an external auxiliary power source is not needed after the power generation device of the power generation field is shut down due to faults; and finallythe black start of the whole power transmission system is achieved. In addition, after the black start is completed, the converter station energy storage device and the power generation energy storagedevice can obtain electric power from the power generation field and the power generation device so as to be charged. When the power generation field and the power generation device just start the black start, a hybrid power supply mode is adopted for supplying power, and the converter station energy storage device and the power generation energy storage device do not stop supplying power until the power generation field and the power generation device operate normally, so that the stability and the safety of the black start process of the power transmission system are ensured.

Description

technical field [0001] The invention belongs to the field of remote power transmission, and in particular relates to a power transmission system and a power supply device thereof. Background technique [0002] With the development of the offshore wind power industry, it has become more and more widely used to arrange power plants on the sea and generate power through the power generation devices arranged in the power plants. However, most of the transmission systems are costly. Highly reliable offshore wind power DC grid-connected solutions have become a top priority for industrial development. Although flexible DC transmission has the advantages of small footprint and small volume compared with traditional DC transmission, it is still not fully suitable for large-scale and long-distance offshore wind power grid integration. [0003] At present, research on the commutation method of diode uncontrolled rectifier instead of controlled rectifier has begun at home and abroad. T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/38H02J3/32
CPCH02J3/381H02J3/32H02J2300/28H02J9/062H02J7/34H02J11/00H02J9/08Y02B10/70
Inventor 彭国平王红占周治国史奔刘会民徐元龙白代兵
Owner GUANGDONG UNLIMITED POWER CO LTD
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