Control Strategies for AC Fault Ride Through in Multiterminal HVDC Grids

• Type: Article in International Scientific Journal
• Date: 2014

Authors

Silva, B (Author) Other; Moreira, CL (Author) FEUP; Leite, H (Author) FEUP; Pecas Lopes, JAP (Author) FEUP

Journal

Title: IEEE Transactions on Power Delivery

Vol. 29 No. 1

Pages: 395-405

ISSN: 0885-8977

Publisher: IEEE

Indexing

ISI Web of Knowledge - 80 Citations

ISI Web of Science

Scopus - 102 Citations

Scientific classification

FOS: Engineering and technology > Electrical engineering, Electronic engineering, Information engineering

CORDIS: Technological sciences > Engineering > Electrical engineering

Other information

Authenticus ID: P-009-6S2

DOI: 10.1109/tpwrd.2013.2281331

Abstract (EN): A fully operational multiterminal dc (MTDC) grid will play a strategic role for mainland ac systems interconnection and to integrate offshore wind farms. The importance of such infrastructure requires its compliance with fault ride through (FRT) capability in case of mainland ac faults. In order to provide FRT capability in MTDC grids, communication-free advanced control functionalities exploiting a set of local control rules at the converter stations and wind turbines are identified. The proposed control functionalities are responsible for mitigating the dc voltage rise effect resulting from the reduction of active power injection into onshore ac systems during grid faults. The proposed strategies envision a fast control of the wind turbine active power output as a function of the dc grid voltage rise and constitute alternative options in order to avoid the use of classical solutions based on the installation of chopper resistors in the MTDC grid. The feasibility and robustness of the proposed strategies are demonstrated and discussed in the paper under different circumstances.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 11