Aucun titre de diapositive

1
POWER QUALITY RESPONSIBILITIES BY GRID
IMPEDANCE ASSESSMENT AT A WIND POWER
PRODUCTION Ana Morales 17th International
Conference and Exhibition on Electricity
Distribution Barcelona 12-15 May 2003
2
CONTENT

• INTRODUCTION
• THE TRUE HARMONIC EMISSION LEVEL
• GPS IMPROVEMENTS SYCHRONISATION ALGORITHMS
• CONCLUSIONS FUTURE WORK

3
INTRODUCTION
FUTURE ELECTRIC INTEGRATION (10)
Country New power installed (end 2001) Wind power capacity (end 2001)
Germany 1890 MW 8000MW
United States 1600 MW (growth 60) 4200 MW
Spain 1065 MW 3300 MW
Denmark 100 MW 2500 MW (18 of total)
4
THE TRUE HARMONIC EMISSION LEVEL
Power Plant
?
Network
Transmission Line
Flicker Harmonics
POWER QUALITY RESPONSIBILITIES?? GRID DEPENDENCE??
5
THE TRUE HARMONIC EMISSION LEVEL
Network equivalent
Zsh
Ih
Esh
Esh Fundamental and harmonic emission of the
network Zsh Ih True harmonic emission level
of the wind farm
6
THE TRUE HARMONIC EMISSION LEVEL
Current
Basic hypothesis Zsh constant Esh
constant Between measured windows
?I
Voltage
?V
t1
t2
7
GPS IMPROVEMENTS SYNCHRONISATION ALGORITHMS
8
GPS IMPROVEMENTS SYNCHRONISATION ALGORITHMS
E(t) reference
time stamp 1
time stamp 2
V(t) terminals
time stamp 1
time stamp 2
9
CONCLUSIONS AND FUTURE WORK
Zs50 detection OK (wind farm simulations)
On-line PQ Responsibilities Assessment
Fundamental and harmonic Zs monitoring at a wind
farm terminals