NDLI: Side-by-side connection of LCC-HVDC links to form a DC grid

Content Provider	IEEE Xplore Digital Library
Author	Yingmei Liu Chuanyue Li Qing Mu Jun Liang
Copyright Year	2015
Description	Author affiliation: Cardiff Univ., Cardiff, UK (Chuanyue Li; Qing Mu; Jun Liang) \|\| Electr. Power Res. Inst., Beijing, China (Yingmei Liu)
Abstract	HVDC is suitable for bulk-power and long-distance transmission. Most of the existing HVDC systems are point-to-point LCC-HVDCs. By interconnecting existing LCC links can achieve more economical benefits and higher flexibility of power transfer. However, due to different voltage levels and control modes of these links, it is impossible to interconnect them together directly through dc cables. The side-by-side connection of LCC links using DC transformers at a geographic crossing point or close proximity between the LCC links is proposed. Such connection is to achieve the benefits of dc grid operation without incurring vast amount of costs by constructing new DC transmission lines but making full use of existing LCC lines. Two LCC links tied by a DC transformer are tested as a case study. The DC transformer based on full-bridge sub-module is designed for coping with power reversal, temporary DC and AC faults and reduced voltage operation. And its control system is designed to match the operation of LCC links.
Starting Page	1
Ending Page	10
File Size	508171
Page Count	10
File Format	PDF
e-ISBN	9789075815221
DOI	10.1109/EPE.2015.7311787
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-09-08
Publisher Place	Switzerland
Access Restriction	Subscribed
Rights Holder	EPE Association and IEEE
Subject Keyword	Thyristors Sid-by-side connection HVDC transmission LCC-HVDC Rectifiers Control systems Inverters Voltage control Load flow HVDC
Content Type	Text
Resource Type	Article

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