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A COMBINED APPROACH OF USING AN SDBR AND A 
STATCOM TO ENHANCE THE STABILITY OF A WIND 
FARM 
ABSTRACT: 
This project presents a method to enhance the stability of a grid-connected 
wind farm composed of a fixed-speed wind turbine generator system (WTGS) 
using a combination of a small series dynamic braking resistor (SDBR) and static 
synchronous compensator (STATCOM). The SDBR and STATCOM have active 
and reactive power control abilities, respectively, and a combination of these units 
paves the way to stabilize well the fixed-speed wind farm. In this paper, a 
centralized control scheme of using an SDBR and a STATCOM together is 
focused, which can be easily integrated with a wind farm. Different types of 
symmetrical and unsymmetrical faults are considered to evaluate the transient 
performance of the proposed control scheme, applicable to a grid-connected wind 
farm. The effect of a multimass drive train of a fixed-speed WTGS in fault 
analysis, along with its importance in determining the size of the SDBR to 
augment the transient stability of a wind farm, is investigated. Extensive simulation 
analyses are performed to determine the approximate sizes of both SDBR and 
STATCOM units. Dynamic analysis is performed using real wind speed data.
A salient feature of this work is that the effectiveness of the proposed 
system to minimize the blade – shaft torsional oscillation of a fixed – speed 
WTGS is also analyzed. 
BLOCK DIAGRAM: 
Wind energy Dynamic circuit 
TOOLS USED: 
breaker 
Mp lab 
Orcad/pspice 
Output 
Driver unit 
Pulse generator 
12v dc 
5v dc 
STATCOM

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JPEEE1434 A Combined Approach of Using an SDBR and a STATCOM to Enhance the Stability of a Wind Farm

  • 1. A COMBINED APPROACH OF USING AN SDBR AND A STATCOM TO ENHANCE THE STABILITY OF A WIND FARM ABSTRACT: This project presents a method to enhance the stability of a grid-connected wind farm composed of a fixed-speed wind turbine generator system (WTGS) using a combination of a small series dynamic braking resistor (SDBR) and static synchronous compensator (STATCOM). The SDBR and STATCOM have active and reactive power control abilities, respectively, and a combination of these units paves the way to stabilize well the fixed-speed wind farm. In this paper, a centralized control scheme of using an SDBR and a STATCOM together is focused, which can be easily integrated with a wind farm. Different types of symmetrical and unsymmetrical faults are considered to evaluate the transient performance of the proposed control scheme, applicable to a grid-connected wind farm. The effect of a multimass drive train of a fixed-speed WTGS in fault analysis, along with its importance in determining the size of the SDBR to augment the transient stability of a wind farm, is investigated. Extensive simulation analyses are performed to determine the approximate sizes of both SDBR and STATCOM units. Dynamic analysis is performed using real wind speed data.
  • 2. A salient feature of this work is that the effectiveness of the proposed system to minimize the blade – shaft torsional oscillation of a fixed – speed WTGS is also analyzed. BLOCK DIAGRAM: Wind energy Dynamic circuit TOOLS USED: breaker Mp lab Orcad/pspice Output Driver unit Pulse generator 12v dc 5v dc STATCOM