Post on 03-Jul-2020
Final presentation Intelligent distribution station (IOP-EMVT 06101)
Josco Kester
Presented at Begeleidingscommissie IOP-EMVT, November 23rd, Eindhoven,The Netherlands
ECN-L--11-014 January 2011
IOP-EMVT 06101 intelligent distributie station
Josco C.P. Kester (MSc)ECN Intelligent Energy Grids (kester@ecn.nl)
Final presentation Intelligent distributie station(IOP-EMVT 06101)
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Smart Substation
by improving• load profile• reliability• power quality
supports LV grids
with distributed generation
and demand peaks
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Project phases
• Requirements
• Functional Design
• Detailed Design
• Assembly
• Laboratory test
• Field demonstration
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Load profile
Peak load: - 30% (simulation)
PowerMatcherSupply Demand Matching
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Reliability
• Decrease peak loads
• Coordination of local supply
• UPS function
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Power Quality
Resonances: - 70% (simulation)
Harmonic CompensationusingVirtual Resistive Harm. Dampening (VRHD)
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Inside the prototype
LV Cabinet MV Cabinet
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LV-cabinet
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MV cabinet
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Lab tests in FPG-Lab
May 2009 – February 2010
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FPG-Lab: fault ride through (anti-islanding mode)
<1ms, 100%, 10kV, symmetrical three-phase, voltage dipat IntDS passive load of 470kVA (115kW) and ESI charging at 7kVA
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FPG-Lab: islanding
ESI System operating in islanding mode after removal of MV supply(passive resistive load of 20kW applied)
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Tests FPG-Lab: results
• safe operation possible
• harmonic compensation reduces harmonics
• intDS supports island operation
• protection issues in laboratory set-up
• APPROVED for field operation
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Field demonstration
Apeldoorn, Het Kasteel (Jun 2010 - )
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Field demonstration
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Field demonstrationTested:• stable operation• harmonic compensation• voltage stability• flicker reduction
Not tested:• controlling microCHPs• active power control (in preparation)
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Field demonstration: PQ classification
17
A - very goodC - sufficientF - very bad
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Field demonstration: Reference PQ (wk20)
18
V (dips) Δfreq flicker THD unbalance
Not available
Connection.error
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Field demonstration: Reference harmonics (wk20)
THD 3rd 5th 7th 11th 13th
All PQ characteristics within limits
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Field demonstration: PQ
V (dips) Δfreq. Flicker THD Unb.
17-19 prep
20 ref
21-26 V
29 harm
30 ref
35-39 V
42-43 flicker
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Field demonstration: harmonics
THD 3rd 5th 7th 11th 13th
17-19 prep
20 ref
21-26 V
29 harm
30 ref
35-36 V
42-43 flicker
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Field demonstration: THD
Reference Harmonic compensation
THD reduced by 15%
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Field demonstration: 3rd Harmonic
Reference Harmonic compensation
3rd harmonic not reduced (very low)
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Field demonstration: 5th harmonic
Reference Harmonic compensation
5th harmonic reduced by 20%
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Field demonstration: 7th harmonic
Reference Harmonic compensation
7th harmonic reduced by 15%
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Field demonstration: flicker
Reference Flicker reduction
Flicker reduced from max 0.4 to max 0.2
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Field demonstration: voltage stabilityReference Voltage Control
Voltage excursions reduced from +/- 4 V to +/- 0.8 V
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Spin-off
• Imtech: Smart Trafo
• Exendis: ESI
• KEMA: FPG-Lab
• Alliander: test environment
• ECN: PowerMatcher
• Eaton, Alfen: sustainable electricity supply
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Spin-off
• Imtech: Smart Trafo
• Exendis: ESI
• KEMA: FPG-Lab
• Alliander: test environment
• ECN: PowerMatcher
• Eaton, Alfen: sustainable electricity supply
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Conclusions
• Lab tests• anti-islanding and islanding tested and approved• specifications tested and documented • approved for field operation
• Field demonstration • tests with microCHPs not possible • active power control not yet working• smart substation has operated without incidents since June 2010• voltage stability improved • THD improved• flicker improved
• International interest for intDS and components