IEEE PES General Meeting, Tampa FLJune 24-28, 2007
Conferência Brasileira de Qualidade de EnergiaSantos, São Paulo, Agosto 5-8, 2007
Chapter 9Case Studies
Chapter 9Case Studies
Contributors: J. Wikston, E. Gunther, and M. Grady
Tutorial on Harmonics Modeling and Simulation
IEEE PES General Meeting, Tampa FLJune 24-28, 2007
Conferência Brasileira de Qualidade de EnergiaSantos, São Paulo, Agosto 5-8, 2007
Case 1Case 1
Simulation of the potential harmonic impacts caused by DC motor drives of ski lifts in a
ski area
IEEE PES General Meeting, Tampa FLJune 24-28, 2007
Conferência Brasileira de Qualidade de EnergiaSantos, São Paulo, Agosto 5-8, 2007
Single Line DiagramSingle Line Diagram
IEEE PES General Meeting, Tampa FLJune 24-28, 2007
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ScenariosScenarios
• Scenario SKIA. No Corrections.
• Scenario SKIB. 30° phase shifting transformers added at Apollo and BigBoss ASDs.
• Scenario SKIC. Case SKIB, plus 1800 kVAr of filters.
IEEE PES General Meeting, Tampa FLJune 24-28, 2007
Conferência Brasileira de Qualidade de EnergiaSantos, São Paulo, Agosto 5-8, 2007
SKIA, Voltage Waveform and Spectrum at Bus #1, Substation 12.5 kV (THDV = 12.2%) SKIA, Voltage Waveform and Spectrum at Bus #1, Substation 12.5 kV (THDV = 12.2%)
IEEE PES General Meeting, Tampa FLJune 24-28, 2007
Conferência Brasileira de Qualidade de EnergiaSantos, São Paulo, Agosto 5-8, 2007
SKIB, Voltage Waveform and Spectrum at Bus #6, Base (THDV = 8.7%) SKIB, Voltage Waveform and Spectrum at Bus #6, Base (THDV = 8.7%)
IEEE PES General Meeting, Tampa FLJune 24-28, 2007
Conferência Brasileira de Qualidade de EnergiaSantos, São Paulo, Agosto 5-8, 2007
SKIC, Voltage Waveform and Spectrum at Bus #6, Base (THDV = 2.7%) SKIC, Voltage Waveform and Spectrum at Bus #6, Base (THDV = 2.7%)
IEEE PES General Meeting, Tampa FLJune 24-28, 2007
Conferência Brasileira de Qualidade de EnergiaSantos, São Paulo, Agosto 5-8, 2007
Case 2Case 2
Harmonics and interharmonics, the filter design, and design verification measurements
associated with an industrial load
IEEE PES General Meeting, Tampa FLJune 24-28, 2007
Conferência Brasileira de Qualidade de EnergiaSantos, São Paulo, Agosto 5-8, 2007
IntroductionIntroduction
• The load and compensation
• Measurements
• Filter design
• Performance measurements
IEEE PES General Meeting, Tampa FLJune 24-28, 2007
Conferência Brasileira de Qualidade de EnergiaSantos, São Paulo, Agosto 5-8, 2007
Load and CompensationLoad and Compensation
• 6 pulse load
• Characteristic harmonic orders are n*p +/- 1
• Initial design 5th and 7th on MV bus
IEEE PES General Meeting, Tampa FLJune 24-28, 2007
Conferência Brasileira de Qualidade de EnergiaSantos, São Paulo, Agosto 5-8, 2007
Measurements - Voltage DistortionMeasurements - Voltage Distortion
IEEE PES General Meeting, Tampa FLJune 24-28, 2007
Conferência Brasileira de Qualidade de EnergiaSantos, São Paulo, Agosto 5-8, 2007
Measurements – 200 ms windowMeasurements – 200 ms window
IEEE PES General Meeting, Tampa FLJune 24-28, 2007
Conferência Brasileira de Qualidade de EnergiaSantos, São Paulo, Agosto 5-8, 2007
Measurements - InterharmonicsMeasurements - Interharmonics
IEEE PES General Meeting, Tampa FLJune 24-28, 2007
Conferência Brasileira de Qualidade de EnergiaSantos, São Paulo, Agosto 5-8, 2007
Filter DesignFilter Design
• Type of filter
• Location of filter
IEEE PES General Meeting, Tampa FLJune 24-28, 2007
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Filter TypesFilter Types
IEEE PES General Meeting, Tampa FLJune 24-28, 2007
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Filter LocationFilter Location
• Utility bus
• Secondary of customers step-down
• Fault level reduced to ½
• Utility bus impedance 100% variation
• Secondary of customer step-down 50%
IEEE PES General Meeting, Tampa FLJune 24-28, 2007
Conferência Brasileira de Qualidade de EnergiaSantos, São Paulo, Agosto 5-8, 2007
Performance MeasurementsPerformance Measurements
IEEE PES General Meeting, Tampa FLJune 24-28, 2007
Conferência Brasileira de Qualidade de EnergiaSantos, São Paulo, Agosto 5-8, 2007
Case 3Case 3
Analysis of harmonic impacts of variable frequency drives to the system
IEEE PES General Meeting, Tampa FLJune 24-28, 2007
Conferência Brasileira de Qualidade de EnergiaSantos, São Paulo, Agosto 5-8, 2007
SuperHarm model one-line diagramSuperHarm model one-line diagram
HARSRC A A1 B C1
F D D1
C
E
G D2
H
I D3
8 mi 266
300 A Reg
8 mi 2665.8 Ohms
0.1 mi 266
300 A Reg0.1 mi 2662 mi 266
4 mi 266
1 mi 266
1.5 MVA25kv/480vZ=4.5%
3 MVA25kv/4160v
Z=5.0%
1200kvar
2 x 1250hp, 1 400hp, 2 x 200kvar, 1 50kvar
2 750hp, 2 75kvar
3 MVA25kv/4160v
Z=5.0%
750 kVA4160v/480v
Z=5.0%
2 x 75hp, 2 x 25kvar, 2 x 60hp, 2 x 22.5kvar, 2 x 30hp asd, 2 x 10kvar Proposed750hp ASD
100kW 30kvar 150hp 20kvar 100hp
0.07 + j0.60 pu@ 25 kV 100 MVA
IEEE PES General Meeting, Tampa FLJune 24-28, 2007
Conferência Brasileira de Qualidade de EnergiaSantos, São Paulo, Agosto 5-8, 2007
Predicted voltage waveform distortion without filters Predicted voltage waveform distortion without filters
Busses B and G
0 10 20 30 40-20000
-10000
0
10000
20000
Time (mS)
Volt
age
(V)
Max:Min:Avg:Abs:
RMS:CF :FF :
18972 -18972 12079.1 18972 13722.8 1.38252 1.13607
25 kV Bus B25 kV Bus G
IEEE PES General Meeting, Tampa FLJune 24-28, 2007
Conferência Brasileira de Qualidade de EnergiaSantos, São Paulo, Agosto 5-8, 2007
Predicted voltage waveform distortion at Bus I with power factor correction capacitors Predicted voltage waveform distortion at Bus I with power factor correction capacitors
Bus I
0 10 20 30 40-400
-200
0
200
400
Time (mS)
Volt
age
(V)
Max:Min:Avg:Abs:
RMS:CF :FF :
372.491 -372.491 229.491 372.491 262.28 1.4202 1.14287