Enhanced fault ride through performance of self‐excited induction generator‐based wind park during unbalanced grid operation. Issue 8 (1st September 2013)

• Record Type: Journal Article
• Authors: El Moursi, Mohamed; Goweily, Khaled; Badran, Ebrahim A.
• Is Part Of: IET power electronics. Volume 6:Issue 8(2013)
• Page Start: 1683
• Page End: 1695
• Publication Date: 2013-09-01
• Subjects: asynchronous generators -- control system synthesis -- power generation faults -- power grids -- power system transient stability -- static VAr compensators -- wind power plants; power 100 MW -- transient stability margin -- asymmetrical grid fault -- LSWP -- grid interface -- STATCOM controller -- electrical grid -- synchronous frame -- static compensator -- unbalanced voltage condition -- large‐scale wind park -- unbalanced grid operation -- self excited induction generator -- fault ride through performance enhancement; Power electronics -- Periodicals; 621.31705
• DOI: 10.1049/iet-pel.2012.0528
• Languages: English
• ISSNs: 1755-4535

Abstract

Abstract : This study presents novel control design for improving the performance of large‐scale wind park (LSWP) based on self‐excited induction generator under unbalanced voltage conditions. A dual controller for static synchronous compensator (STATCOM) employing controller by employing positive‐ and negative‐sequence synchronous frames is implemented and analysed in response to severely unbalanced voltage conditions. The test system simulated represents a wind park rated at 100 MW connected to a weak electrical grid. The potential of the dual STATCOM controller is evaluated and analysed for severely unbalanced voltage conditions at the grid interface of LSWP. The dual controller with STATCOM overloading capability is tested and compared with the performance of the positive‐sequence controller in response to different types of asymmetrical grid faults at low short‐circuit ratios. The simulations performed using PSCAD/EMTDC demonstrate superior performance of dual STATCOM control strategy for improving unbalanced operation, fault ride through capability and transient stability margin in response to severely unbalanced voltage conditions.