Manchester Centre for Electrical Energy
University of Manchester
Control of DFIG Wind Turbines for
Power Network Operation Support
Olimpo Anaya-Lara and Nick Jenkins
IEA Annex XI Topical Expert Meeting
November 9-10, Dublin, Ireland
Manchester Centre for Electrical Energy
University of Manchester
Topics
• UK Government objectives for 2010
• Research support
• Current projects
• DFIG control design
• Summary
IEA Annex XI Topical Expert Meeting
November 9-10, Dublin, Ireland
Manchester Centre for Electrical Energy
University of Manchester
UK |Government 2010 Objectives
• 10% of UK electricity supply provided by renewable
energy sources.
• High contribution expected from wind energy.
• Future wind farms based on DFIG configurations.
• Grid Code compliance of DFIG wind turbines.
IEA Annex XI Topical Expert Meeting
November 9-10, Dublin, Ireland
Manchester Centre for Electrical Energy
University of Manchester
Research Support
• DTI Centre for Distributed Generation and
Sustainable Electrical Energy.
• EPSRC Supergen Initiative for Future Network Technologies.
IEA Annex XI Topical Expert Meeting
November 9-10, Dublin, Ireland
Manchester Centre for Electrical Energy
University of Manchester
Industrial Collaborators
• National Grid (Transco) Company
• Scottish and Southern Energy
• Scottish Power
• AREVA
• ABB
IEA Annex XI Topical Expert Meeting
November 9-10, Dublin, Ireland
Manchester Centre for Electrical Energy
University of Manchester
Current Projects
• Protection methods for active distribution networks with high
penetration of distributed generation.
• UK Generic Distribution System (UKGDS) model in order to
provide a common base for the simulation and analysis of the
impact of distributed generation on the operation, performance,
economics and development of the UK distribution networks.
• Control of doubly fed induction generators for wind farm
operation.
IEA Annex XI Topical Expert Meeting
November 9-10, Dublin, Ireland
Manchester Centre for Electrical Energy
University of Manchester
Control of DFIGs for wind farm operation
Development of control schemes that enable a DFIG to contribute to
network operation and to satisfy new Grid Code requirements:
• Voltage control and recovery following network faults.
• Frequency regulation following loss of network generation.
• Positive contribution to network damping.
• Fault ride through capability.
• Compatibility with conventional generation dynamic characteristics.
IEA Annex XI Topical Expert Meeting
November 9-10, Dublin, Ireland
Manchester Centre for Electrical Energy
University of Manchester
Generic network model
Generator 1
Generator 2
• Platform used for DFIG control
scheme design and performance
prediction.
Synchronous
Generator
ZF
Fault 1
Load
Main
System
ZF
Fault 2
DFIG
Wind Farm
or
synchronous
generator
• Main system may be represented
by infinite bus or equivalent
synchronous generator models.
• Suitable for transient and small
signal stability studies.
IEA Annex XI Topical Expert Meeting
November 9-10, Dublin, Ireland
Manchester Centre for Electrical Energy
University of Manchester
Main system model: infinite bus
Generator 1
responses
Generator 2
responses
Synchronous
generator
DFIG
Fault 2 applied near DFIG wind farm at t = 0.2s
IEA Annex XI Topical Expert Meeting
November 9-10, Dublin, Ireland
Manchester Centre for Electrical Energy
University of Manchester
Main system model: equivalent synchronous generator
Generator 1
responses
Generator 2
responses
Synchronous
generator
DFIG
Fault 2 applied near DFIG wind farm at t = 0.2s
IEA Annex XI Topical Expert Meeting
November 9-10, Dublin, Ireland
Manchester Centre for Electrical Energy
University of Manchester
Frequency support
Main system
responses
Generator 2
responses
Synchronous
generator
Synchronous
generator
Loss of generation at t = 0.2s
IEA Annex XI Topical Expert Meeting
November 9-10, Dublin, Ireland
Manchester Centre for Electrical Energy
University of Manchester
Frequency support
Main system
responses
Generator 2
responses
Synchronous
generator
DFIG
Loss of generation at t = 0.2s
IEA Annex XI Topical Expert Meeting
November 9-10, Dublin, Ireland
Manchester Centre for Electrical Energy
University of Manchester
Summary
IEA Annex XI Topical Expert Meeting
November 9-10, Dublin, Ireland