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PERFORMANCE REPORT OF 1MW THIN FILM SOLAR
POWER PLANT
Dated: 17-01-2013
M/s Conflux infratech Pvt. Ltd, Village: khirva, Tahsil
–Falodi, Dist: Jodhpur, State: Rajasthan(India)
The above1MW thin
film Solar Power Plant is situated at village Khirva between Falodi and Bap
road, about 22km from Falodi. The geographical coordinate of Falodi are Latitude:
27.23N & Longitude: 72.36E . The environmental temperature varies from 0°
to 48° degrees centigrade’s. The solar
insolation in December is 4.12 KWh/M^2/day
and in May is 6.97 KWh/M^2/day. The average solar insolation is
5.55KWh/M^2/day. In December month Solar panels starts to produce energy from
8.00AM to 4.00PM (8.00 hours) & in June month from 6.30Am to 5.30PM.( 11.00
hours) The Solar power available in AC form after deducting losses i.e module
mismatching loses, high temperature loses, dirt & dust loses, wiring loses,
DC to AC conversion loses. So the conversion factor is assumed 0.77.
So annual production of1MW power plant will be = 1000x365x5.55x0.77 = 1559827KWh .The power performance can
be improved by minimize above loses.
The said unit has 21.00 bigha land. It consists of 8550
Nos. 85watt & 3600Nos. 77.5watt thin
film solar cell modules of First solar company from USA. All modules are UL
approved. These modules are south faced, mounted on 135 fix axis supporting
structure, 6 strings in each structure. From 135 structures 14 are not working.
The solar power via combiner boxes goes to two 500KW inverters, after inversion
it goes to 1.2 MVA step up transformer to grid. Suitable disconnects are also
available.
1. Nos.
of 85 Watt First Solar thin film modules 8550 Power – 726.750KW
2. 
Nos. of 77.5 Watt First Solar thin film modules 3600
Power – 279.000 KW
Total Power -1005.750KW
Less :1
Broken Modules: 85 Watts 144 Power- 12.240Kw
Broken module 77.5Watts 167 Power- 12.942KW
Total 25.182KW
Net
available power : 980.568 KW or 0.980568MW, Say .98MW
Conflex
infratech Pvt, Ltd, Village: Khirva, Tahsil: Falodi, Dist: Jodhpur
(Comparison
table between estimated & actual energy harvesting)
Sn.
|
Months
|
Insolation-
KWh/M^2/day
|
Estimated
Power generation /MW
|
Actual
power generation
|
Shortage
|
% Short /Excess
|
1
|
Mar16-2012
|
6.04
|
74413
|
53650
|
20763
|
27.90
|
2
|
April-2012
|
6.73
|
155463
|
126997
|
28466
|
18.31
|
3
|
May-2012
|
6.97
|
166374
|
70945
|
85429
|
57.31
|
4
|
June-2012
|
6.55
|
151305
|
98885
|
52420
|
34.65
|
5
|
July-2012
|
5.46
|
130330
|
114700
|
15630
|
11.99
|
6
|
Aug-2012
|
5.42
|
129375
|
71136
|
58239
|
4502
|
7
|
Sep-2012
|
5.85
|
135135
|
91407
|
43728
|
32.36
|
8
|
Oct-2012
|
5.31
|
126750
|
122267
|
4483
|
03.54
|
9
|
Nov-2012
|
4.99
|
115269
|
113071
|
2198
|
01.91
|
10
|
Dec-2012
|
4.12
|
98344
|
114586
|
-16242
|
-16.52
|
11
|
Jan17-2013
|
|
56418
|
56262
|
156
|
00.28
|
KWh
|
Average
|
5.55
|
1339176
|
1033800
|
305270
|
22.80
|
|
|
|
|
|
|
|
I
have inspected this unit on 17th January, 2013 at 3.00PM during sun
peak hours. Unfortunately it was cloudy day so available power up to 3.00PM was
only 2542.00KWh. This energy is developed by 0.98MW power module instead of
1.005MW power module. The total energy, 1033.800MWh is generated from 16th
March,2012 to 17th Jan-2013 ( Ten months). If the broken modules are
replaced, than 2% (1033800x0.02= 20676KWh) energy can be harvest more. Then it
will be 1054.476MW. But still there is gap of (1339.176-1054.476=284.700MWh).
From above table about 20% less energy is sold. There may be some mistakes in
data logger reading and actual delivered energy to the PPA agency.
The Plant started since 16th March,2012.
During this half month energy harvested was 53650KWh, which is 20763KWh less
than estimated energy 74413KWh. The %
loss is 27.9. In May month % lose is 57.3, it show improper communication with
PPA agency. August & September are rainy season months. October &
November it harvested better energy. In
month of December 16% energy harvesting is more. This situation may be due to
sunny days and full supply to grid. During Jan17,2013 the energy harvesting is to
the estimated level.
Findings:
There
is no technical problem in Plant Machinery & erection. Lose of harvesting
power is due to manual mistakes & communication gap between PPA authority.
Suggestions:
1. Broken
modules should be replaced as soon as possible.
2. Regularly
clean modules from dirt & dust.
3. Proper
communication with electricity board to dispatch maximum harvested energy.
4. By
2% extra modules for future breakages or for personal use.
5. Single
axis tracking can be used to improve the efficiency.
6. One
extra 1.2MVA should be purchased in case
of failure of plant transformer.
Enclosed:
Insolation chart of Falodi
Preparedby:-
Chandanmal
Jain +91 9829930553
B.E(Mechanical)
Solar
Energy Consultant & Approved Valuer (P&M)
Mahaveer Circle, Juna keradu marg
Barmert
(Rajasthan)- India
