Offshore wind power twenty-four-pulse diode rectification sending-out system and construction method

By using the offshore wind power twenty-four pulse diode rectification and delivery system with a twenty-four pulse wave uncontrolled rectifier valve in offshore wind power transmission project, the problem of large weight and size of the offshore converter platform is solved, and the effect of reducing equipment costs and operating costs is achieved.

CN119696070APending Publication Date: 2025-03-25GUANGDONG POWER GRID CO LTD +1
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Patent Information

Application Number
CN202411779255.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-05
Publication Date
2025-03-25

AI Technical Summary

Technical Problem

In the current offshore wind power transmission project, the weight and size of the offshore converter platform are large, resulting in limited transportation resources and high transmission costs. It is necessary to design an offshore wind power transmission system solution that can reduce the weight and size of the offshore converter platform.

Method used

The offshore wind power twenty-four pulse diode rectification and delivery system is adopted. The system includes a GIS chamber, an uncontrolled rectifier transformer, a twenty-four pulse wave uncontrolled rectifier valve and a DC reactor. It is rectified through a twenty-four pulse wave uncontrolled rectifier valve. Compared with the MMC valve, its weight and size are smaller, and there is no need for a trigger circuit. It adopts a closed structure to install, reducing maintenance needs.

Benefits of technology

By adopting a twenty-four pulse wave uncontrolled rectifier valve, the weight and size of the offshore converter station can be greatly reduced, equipment costs and operating costs, the cost of transmission projects can be reduced, and economic benefits can be improved.

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Abstract

The invention discloses an offshore wind power twenty-four-pulse diode rectification sending-out system and a construction method, and the system comprises a GIS room, an uncontrolled rectifier transformer, a twenty-four-pulse wave uncontrolled rectifier valve, and a DC reactor. Wherein the GIS chamber is electrically connected with the network side of the uncontrolled rectifier transformer; the valve side of the uncontrolled rectifier transformer is electrically connected with the 24-pulse uncontrolled rectifier valve; and the 24-pulse wave uncontrolled rectifying valve is electrically connected with the direct-current reactor. According to the offshore wind power twenty-four-pulse diode rectification sending-out system, the twenty-four-pulse-wave uncontrolled rectifying valve is adopted for rectification, compared with an MMC valve, the twenty-four-pulse-wave uncontrolled rectifying valve serves as a diode rectification device, the weight and the size are smaller, the reliability of the twenty-four-pulse-wave uncontrolled rectifying valve is higher than that of the MMC valve, frequent maintenance is not needed, and the service life of the twenty-four-pulse-wave diode rectification sending-out system is prolonged. Therefore, the weight and the size of the offshore converter station can be greatly reduced by adopting the 24-pulse wave uncontrolled rectifying valve for rectification.
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