Energies 2014, 7(2), 1003-1026; doi:10.3390/en7021003
Voltage Support Provided by STATCOM in Unbalanced Power Systems
Ana Rodríguez 1,*
, Emilio J. Bueno 2
, Álvar Mayor 1, Francisco J. Rodríguez 2 and Aurelio García-Cerrada 3
, Álvar Mayor 1, Francisco J. Rodríguez 2 and Aurelio García-Cerrada 31
Gamesa Electric; Avda. Fuentemar, 5, Madrid, Coslada 28823, Spain
2
Electronics Department, University of Alcalá, Ctra. Madrid-Barcelona, km. 33,600, Madrid, Alcalá de Henares 28871, Spain
3
Electronics and Control Department, Comillas Pontifical University; Alberto Aguilera, 25, Madrid 28015, Spain
*
Author to whom correspondence should be addressed.
Received: 5 December 2013 / Revised: 6 February 2014 / Accepted: 19 February 2014 / Published: 24 February 2014
(This article belongs to the Special Issue Smart Grids: The Electrical Power Network and Communication System)
Abstract
The presence of an unbalanced voltage at the point of common coupling (PCC) results in the appearance of a negative sequence current component that deteriorates the control performance. Static synchronous compensators (STATCOMs) are well-known to be a power application capable of carrying out the regulation of the PCC voltage in distribution lines that can suffer from grid disturbances. This article proposes a novel PCC voltage controller in synchronous reference frame to compensate an unbalanced PCC voltage by means of a STATCOM, allowing an independent control of both positive and negative voltage sequences. Several works have been proposed in this line but they were not able to compensate an unbalance in the PCC voltage. Furthermore, this controller includes aspects as antiwindup and droop control to improve the control system performance. View Full-TextKeywords:
PCC voltage control; STATCOM; unbalanced voltage
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MDPI and ACS Style
Rodríguez, A.; Bueno, E.J.; Mayor, Á.; Rodríguez, F.J.; García-Cerrada, A. Voltage Support Provided by STATCOM in Unbalanced Power Systems. Energies 2014, 7, 1003-1026.
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