Caribbean Hybrid Power System Case Study Over … · Caribbean Hybrid Power System Case Study ......
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1 Caribbean Hybrid Power System Case Study Over Yonder Cay International Hybrid Power Systems Workshop Honolulu, Hawaii September 13 th 2013 Thanks to: Over Yonder Cay Scientific and Engineering Development Team Presented by: Jeff Petter Northern Power Systems Technologies
Transcript of Caribbean Hybrid Power System Case Study Over … · Caribbean Hybrid Power System Case Study ......
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Caribbean Hybrid Power System Case Study
Over Yonder CayInternational Hybrid Power Systems Workshop
Honolulu, Hawaii
September 13th 2013
Thanks to:Over Yonder CayScientific and Engineering Development Team
Presented by:Jeff PetterNorthern Power Systems Technologies
Distributed Wind• NPS 100-21 • NPS 100-24 • NPS 60-23Utility Wind• NPS 2.3-93• NPS 2.2-100• NPS 2.1-110
Turbine Manufacturing Sales and Service
Design and Technology Licensing Technology Development
Licensing of:• Wind Turbines• PM Generators• Power Electronics
• Energy Storage• Motor Drives• Inverters
• Controls• System Design
Lline Rline
Lline Rline
RlineLline
Va
Vb
Vc
ia-line
ib-line
ic -line
g
dq0
0 +
i 0- Cur.Reg.
vdc
abc
0
iq*
i0*
ia bc
La
LbRb
Rc Lc
Ea
Eb
Ec
Raia-gen
ib-gen
ic -gen
id=f(T*)0
dq0
abc0
Cur.Reg.
TTCU
iq*
i0*
id*id*
iabc
vab0* vab0
*i 0* i 0
*
+
-i 0
vdc id+
-
vdc
Rdbl
SpeedReg.
rpmcmd
rpmmsrd
+
-
1
0
Control Mode
GenGrid
Northern Power Systems Business Areas
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Put NPS Engineering in Your Product
• Develop Products • Build Prototypes• Test and Analysis
• PM Generators• Power Electronics• MicroGrid• Wind Turbines
Where is Over Yonder Cay ?
Major Equipment3 Cummins Diesel Engines 250kW each3 NPS 100kW
Variable Speed Stall Control Wind TurbinesSolar
240 kW DC connected to battery142 kW AC connected
Battery System6 MWhr VRLA (two days of typical load)
2 Bidirectional Inverters 300kVADC side fed by batteries and solar
Load Maximum 389 kWAverage 159 kWMinimum 50 kWDispatchable 50kW RO desalination system
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Generation System Electrical Arrangement(Screen Shot from Engineering Interface)
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Power System Over View and SCAD Interface
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Another system overview showing diesel power over May and June 2013
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Wind Power this Week and last Week
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Battery SOC vs Turbine “Availability”
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Solar Power this week and last week
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Power Flows for the week of 7/02/2013
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Over Yonder Cay
Hurricane Irene August 2011 Hurricane tracks 1850 to 2010
Over Yonder Cay
TS C1 C2 C3 C4 C5
Caribbean Severe Conditions Lightning and Hurricanes Likely
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8/24/11 0:00 8/24/11 12:00 8/25/11 0:00 8/25/11 12:00 8/26/11 0:00
Wind Speed (mph)
Turbine Power (kW)
Grid Voltage (Vrms L-N)
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Turbine and grid operation during hurricane Irene
Turbines shutdown
Turbines enabled
Voltage at turbine good through storm
Peak wind at turbine 112 mph
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Lessons Learned
• Systems can be made robust with enough money and good design
• Battery charge is hard to manage near full charge in this design with wind • NPS believes fast secondary load controller will solve this
• Using NPS wind turbine power limit control will help (test of this feature is being planned)
• Wind Turbines need to be designed to survive max expected wind gusts
• Lightning must be taken seriously in the Caribbean• Turbine lightning protection system needs a very low impedance path from blade tips to
tower to earth
• Power and control inside tubular tower give extra protection
• Use underground power distribution if possible
• Turbine earthing and power system grounding at turbine base is important
• Use fiber or wireless communications both up tower and to turbines
Irene took blades from 6 15kW turbines at OYC
Irene stopped NPS 100 -21 turbines for a few hours at OYC
