Low voltage ride through capability enhancement of wind farms´ generators: DVR versus STATCOM

Author

Awad, Ahmed S. A. ; El Shatshat, Ramadan ; Salama, Magdy M. A. ; EL-Fouly, Tarek H. M.

Author_Institution

Electr. & Comput. Eng. Dept., Univ. of Waterloo, Waterloo, ON, Canada

fYear

2014

fDate

27-31 July 2014

Firstpage

1

Lastpage

5

Abstract

This paper investigates the application of dynamic voltage restorer (DVR) versus static compensator (STATCOM) to enhance low voltage ride through (LVRT) capability of wind farms. The research done in the area of LVRT focused on a single machine compensation analysis; however, no such analysis was done for entire wind farms generators. Therefore, the main contribution of this paper is to study LVRT compensation through STATCOM and/or DVR in order to provide guidelines for the implementation of each solution within large wind farms. In this paper, squirrel cage induction generators (SCIGs) are studied using a simplified approach based on torque-speed characteristics of induction machines. The transient stability margin is proposed as indicator of LVRT capability. Analytical calculations are verified against simulation results using PSCAD/EMTDC package.

Keywords

asynchronous generators; squirrel cage motors; static VAr compensators; torque; wind power plants; DVR; EMTDC package; PSCAD package; SCIG transient stability margin; STATCOM; dynamic voltage restorer; low voltage ride through compensation; single machine torque speed characteristics; squirrel cage induction generator; static compensator; wind farm generator; wind farms LVRT capability; Automatic voltage control; Induction generators; Power system stability; Wind farms; Wind turbines; dynamic voltage restorer; low voltage ride through; squirrel cage induction generator; static compensator;

fLanguage

English

Publisher

ieee

Conference_Titel

PES General Meeting | Conference & Exposition, 2014 IEEE

Conference_Location

National Harbor, MD

Type

conf

DOI

10.1109/PESGM.2014.6939144

Filename

6939144