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## Utility Scale Wind Energy

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### Utility Scale Wind Energy Prof. Jinsoo Park UTI-111 Essex County College Introduction Applications of windmills Sailing ships Pumping waters Grinding grains Sawing ... – PowerPoint PPT presentation

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Title: Utility Scale Wind Energy

1
Utility Scale Wind Energy
• Prof. Jinsoo Park
• UTI-111
• Essex County College

2
Introduction
• Applications of windmills
• Sailing ships
• Pumping waters
• Grinding grains
• Sawing
• Generating electricity
• History of windmills
• Persia
• Greece
• Rome
• Holland
• United States

3
Wind energy
• Wind energy is actually a converted form of solar
energy.
• The suns radiation heats different part of the
earth at different rates during the day and
night, but also when different surfaces (e.g.,
water and land) absorb or reflect at different
rates.
• This in turn causes portions of the atmosphere to
warm differently.
• Hot airs rises, reducing the atmospheric pressure
at the earths surface, and cooler air is drawn
in to replace it.
• Air has a mass, and when it is in motion, it
contains the kinetic from mass in motion.
• Some portion of that energy can be converted into
other forms mechanical force or electricity that
we can use to perform work.

4
Wind Turbine
• A wind system transforms the kinetic energy of
wind to mechanical or electrical energy.
• Wind turbines are mounted on a tower to capture
the most energy.
• Turbines catch the winds energy with their
• Usually two or three blades are mounted on a
shaft to form a rotor.
• A blade acts much like an airplane wing.

5
Wind Turbine Types
• There are two basic designs of wind electric
turbines vertical-axis (egg-beater style) and
horizontal-axis (propeller style).
• Horizontal-axis wind turbines are most common
today, constituting nearly all of the utility
scale turbines in the global market.

6
Wind Turbine Components
• A rotor, or blades, which convert the wind energy
into rotational shaft energy.
• A nacelle (enclosure) containing a drive train,
usually including a gearbox and a generator.
• A tower, to support the rotor and drive train
• Electronic equipment such as controls, electric
cables, ground support equipment, and
interconnection equipment.

7
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8
Wind Amplified Rotor Platform
• Wind Amplified Rotor Platform (WARP) is a
different kind of wind system that is designed to
be more efficient and sue less land than wind
machines in use today.
looks like a stack of wheel rims.
• Each module is a pair of small, high-capacity
turbines mounted to both of its concave wind
amplifier module channel surfaces.

9
Wind Turbine Capacity
Diameter Capacity
60 ft 0.10 MW
164 ft 0.75 MW
216 ft 1.5 MW
279 ft 2.5 MW
328 ft 3.5 MW
394 ft 5.0 MW
10
Average Turbine Size
1980 0.25 MW
1995 0.50 MW
0998-1999 0.71 MW
2000-2001 0.88 MW
2002-2003 1.19 MW
2004-2005 1.44 MW
2006 1.60 MW
2007 1.65 MW
11
Wind Turbine Capacity
• The output of a wind turbine depends on the
turbines size and the winds speed.
• Wind speed is a crucial element in projecting
turbine performance.
• A sites wind speed is measured through wind
resource assessment prior to a wind systems
construction.
• Generally, an annual average wind speed greater
than 10 mph is required for small wind turbines
while larger utility scale wind plants need a
slightly higher minimum average wind speed of 13
mph.

12
Wind Turbine Capacity
• The power available in the wind is proportional
to the cube of its speed.
• Doubling the wind speed increases the available
power by a factor of eight.
• For example, a turbine operating at a site with
an average wind speed of 11 mph could in theory
generate 33 more electricity than the one at 10
mph.
• Therefore, a small difference in wind speed can
make a big difference in the capacity.

13
The 7.5 MW Jersey-Atlantic Wind Farm
14
Jersey-Atlantic Wind Farm
• PROJECTThe 7.5-megawatt (MW) Jersey-Atlantic
Wind Farm is the first wind farm to be built in
New Jersey, and the first coastal wind farm in
the United States. The wind farm is located in
Atlantic County, NJ and is visible to more than
30 million Atlantic City visitors each year from
downtown Atlantic City and the Atlantic City
Expressway. The project produces approximately 19
million kilowatt-hours of emission-free
electricity per year. The electricity is used by
both the Atlantic County Utilities Authority
(ACUA) Wastewater Treatment Plant and delivered
to the regional electric grid.
• PROJECT DESIGN Five 1.5 MW GE wind turbines
standing 397 feet tall located on the premises of
the ACUA Wastewater Treatment Plant in coastal
Atlantic City, NJ.
• PROJECT SCHEDULE Ground Breaking- September
2005Turbine Erection - OctoberDecember
2005Commercial Operation - December 2005

15
NJ Off Shore Wind Farm
• Three projects were submitted to the Office of
Clean Energy in the New Jersey Board of Public
Utilities in March 2008.
• In October 4, 2008, Regulators in New Jersey
awarded the rights on Friday for construction of
a 1 billion offshore wind farm in the southern
part of the state to Garden State Offshore
Energy.
19 million in state grants, is part of New
Jerseys Energy Master Plan, which calls for 20
percent of the states energy to come from
renewable sources by 2020.

16
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17
Garden State Offshore Energy (GSOE) will employ a
propietary deep water foundation technology which
enables wind turbines to be located in deep
waters far from shore. Thanks to these deep
water foundations, the GSOE project will be
located more than 16 miles offshore, making it
virtually invisible from New Jersey's
beaches. From the Music Pier in Ocean City, NJ -
the location closest to GSOE project the wind
turbines will be virtually invisible from shore.