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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Novel Control Approach for a Hybrid Grid-Forming HVDC Offshore Transmission System

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Author(s):
Tian, Shangen [1] ; Campos-Gaona, David [1] ; Lacerda, Vinicius A. [1, 2] ; Torres-Olguin, Raymundo E. [3] ; Anaya-Lara, Olimpo [1]
Total Authors: 5
Affiliation:
[1] Univ Strathclyde, Inst Energy & Environm, Glasgow G1 1XW, Lanark - Scotland
[2] Univ Sao Paulo, Sao Carlos Sch Engn, Dept Elect & Comp Engn, Ave Trabalhador Sao Carlense 400, Sao Carlos - Brazil
[3] SINTEF Energy Res, Dept Energy Syst, N-7034 Trondheim - Norway
Total Affiliations: 3
Document type: Journal article
Source: ENERGIES; v. 13, n. 7 APR 2020.
Web of Science Citations: 0
Abstract

This article describes a hybrid topology of high-voltage direct current (HVDC) for offshore wind farms using a series connection of a voltage source converter (VSC) and six-pulse diode rectifier (6P-DR). In this topology, the offshore side VSC (OF-VSC) acts as a grid-forming converter to maintain the PCC (point of common coupling) voltage of offshore wind farms (WF) and frequency. In addition, the OF-VSC functions as an active power filter to suppress the 5th, 7th, 11th, and 13th order harmonic current components produced by the 6P-DR, making it almost sinusoidal. Due to the 6P-DR being used in the hybrid converter, this new configuration reduces the total cost of the converters and losses, while preserving the power flow to the onshore gird. Compared to the fully-rated converter and hybrid converter based on a 12-pulse diode rectifier, the power loss and cost are reduced, and in addition, the proposed hybrid converter does not require a phase shift transformer nor a high number of diodes. A 200 MW in an HVDC transmission system using the hybrid configuration was simulated in PSCAD. The results show that the system operated correctly and the harmonic components were filtered. (AU)

FAPESP's process: 18/10667-6 - Intelligent protection of multiterminal VSC-HVDC systems: aspects of simulation and implementation
Grantee:Vinícius Albernaz Lacerda Freitas
Support Opportunities: Scholarships abroad - Research Internship - Doctorate (Direct)