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The impact of voltage regulation of multiinfeed VSC-HVDC on power system stability

journal contribution
posted on 15.05.2019, 00:00 by Md Rakibuzzaman ShahMd Rakibuzzaman Shah, R Preece, M Barnes
© 1986-2012 IEEE. Due to the anticipated proliferation of HVDC links up to and beyond 2020 into transmission systems, it is expected that in some locations, two or more HVDC links will be installed with a short electrical distance between them and will form a multiinfeed (MI)-HVDC scenario for the system. The control and operation of MI-HVDC systems are of particular concern for weak grids such as that likely to be found in the North of Scotland network. It is shown that the ac voltage regulation in the VSC-HVDC link may adversely affect the dynamic performance of the host weak ac system under the MI-HVDC scenario. To overcome this identified limitation associated with the ac voltage controller in the VSC-HVDC link, a new controller modification conforming to the grid code is proposed in this paper. Furthermore, this paper presents a robust control design method for ac voltage control using the fractional order (FO) control design theory. The influences of the proposed FO-based ac voltage controller are assessed alongside various voltage controllers for the representative North Scotland system. It is shown that the FO-based ac voltage controller has favorable effects on the dynamic behavior of weak ac systems with MI-HVDC.

History

Volume

33

Issue

4

Start Page

1614

End Page

1627

Number of Pages

14

eISSN

1558-0059

ISSN

0885-8969

Publisher

IEEE, USA

Additional Rights

CC BY 3.0

Peer Reviewed

Yes

Open Access

Yes

Acceptance Date

25/04/2018

External Author Affiliations

University of Manchester, UK

Era Eligible

Yes

Journal

IEEE Transactions on Energy Conversion