at the sites
Normally wind farms are located in remote, sparsely populated
areas since availability of wind resource is higher in these
areas. Such areas frequently do not have well laid roads.
Hence additional investment is often necessary in order
to clear the area, lay roads and lighting to ensure that
the site is approachable. However,
the MDGEPL proposed sites are located at a distance of 10-15KM
from the national highway 15 (NH 15) that cuts across the
state of Gujarat. National
highways in India are well maintained roads often frequented
by large freight trucks. The sites are also connected to
the NH15 through smaller service roads. The proximity to
the highway makes the MDGEPL proposed sites very approachable
and therefore significantly reduces the additional investments
characteristic feature in any Indian city is the presence
of various village and settlements along highways. The same
is the case with the MDGEPL proposed sites which have villages
at close distance from where labour could be sourced for
the personnel needed for construction and maintenance. The
sites are located at a distance of around 250KM from the
airport (around 4-5 hours away) and have excellent restaurants
and lodging facilities nearby for visiting executives/managers.
MDGEPL proposes to set up a 100MW capacity wind farm at
the identified sites in Gujarat.
electric generators and accessories.
MDGEPL proposes setting up 67 generators of 1.5 MW plate
rating to achieve a total capacity of 100.5MW. This section
details the minimum technical design parameters that the
generators and its accessories would adhere to.
a) Wind electric generators (WEG)
MDGEPL proposes to use a Suzlon1500 KW rating (e.g. model
S-82) Wind Electric Generators (WEGs) or an equivalent make
from another manufacturer for the wind farm. This make is
commonly used in India and is commercially available from
various manufacturers. They are of a proven design for high,
reliable performance and type tested by independent test
authorities. They are grid-compatible for operation within
the specified variations of voltage, frequency and current
particular make of WEGs is also part of the latest approved
list released by C-WET (Centre for wind engineering and
turbines) dated 24.07.2008. Over 715 Nos. of S-82 model
WEGs of Suzlon, aggregating to a capacity of 1077 MW have
already been installed in Tamil Nadu , Karnataka, Gujarat,
Maharashtra and Rajasthan.
the WEG would ensure the following:
capability for maximum 10 min. average wind speed at hub
capability for maximum 2 sec. gusty wind speed at hub height.
operation wind speed, given as 10 min. average wind speed.
electrical power output.
rotor revolution speed.
generators shall be induction generators (asynchronous)
or synchronous designed for tropical environment, and in
accordance with the relevant standards including IS:4722,
IEC:34 and IEC:529.
They shall meet the following technical specifications as
Degree of protection (IEC) IP54 (also provided with drain
factor Minimum power factor at generator point shall be
at any generating condition; if necessary using compensating
Asymmetry Approx. 10%
class (IEC 85) B.
rise at full load, ambient temp. 45?C, is preferably be
in accordance with insulation class B (IEC-85).
shall be provided with temperature sensors installed in
the stator windings being part of the generator protection
windings etc. must be special corrosion protected to cope
with condensation problems caused by the high relative humidity/temperature
gradient on the site.
shall be protected against short circuit, earth fault, over
load, over and under-voltage.
construction, electrical and mechanical must withstand cut-in