1. PQ Responsibilities at a Wind Power Production 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 G ENIE E LECTRIQUE

2. PQ Responsibilities at a Wind Power Production CONTENT INTRODUCTION THE TRUE HARMONIC EMISSION LEVEL GPS IMPROVEMENTS: SYCHRONISATION ALGORITHMS CONCLUSIONS & FUTURE WORK

3. PQ Responsibilities at a Wind Power Production INTRODUCTION FUTURE ELECTRIC INTEGRATION (10%) CountryNew power installed (end 2001) Wind power capacity (end 2001) Germany1890 MW8000MW United States 1600 MW (growth +60%) 4200 MW Spain1065 MW3300 MW Denmark100 MW2500 MW (18% of total)

4. PQ Responsibilities at a Wind Power Production THE TRUE HARMONIC EMISSION LEVEL Transmission Line Power Plant Network Arc furnace Flicker Harmonics ? POWER QUALITY RESPONSIBILITIES?? GRID DEPENDENCE??

5. PQ Responsibilities at a Wind Power Production THE TRUE HARMONIC EMISSION LEVEL Network equivalent Es h Zs h E sh : Fundamental and harmonic emission of the network | Zs h I h |: True harmonic emission level of the wind farm IhIh

6. PQ Responsibilities at a Wind Power Production THE TRUE HARMONIC EMISSION LEVEL Basic hypothesis: Zs h constant Es h constant Between measured windows ΔIΔI ΔVΔV Current Voltage t1t2

7. PQ Responsibilities at a Wind Power Production GPS IMPROVEMENTS: SYNCHRONISATION ALGORITHMS Transmission Line Power Plant Network GPS REC GP S RE C

8. PQ Responsibilities at a Wind Power Production GPS IMPROVEMENTS: SYNCHRONISATION ALGORITHMS time stamp 1 time stamp 2 E(t) reference V(t) terminals

9. PQ Responsibilities at a Wind Power Production CONCLUSIONS AND FUTURE WORK Fundamental and harmonic Zs monitoring at a wind farm terminals Zs 50 detection OK (wind farm simulations) On-line PQ Responsibilities Assessment