International Journal of Innovative and Emerging Research in Engineering
Volume 3, Issue 2, 2016
Available online at www.ijiere.com
International Journal of Innovative and Emerging
Research in Engineering
e-ISSN: 2394 - 3343
p-ISSN: 2394 - 5494
Design and Performance Analysis of 100KWp Rooftop Grid
Connected Solar PV Plant in Surat Municipal Corporation
Bhavin Ahir(a), Aditi Hajari(b), Jinesh Patel(c)
(a)P.G. Student, Department of EE, S.C.E.T. College, Surat, Gujarat, bhavinahir139@yahoo.com
(b)Asso. Prof., Department of EE, S.C.E.T. College, Surat, Gujarat, aditi.hajari@scet.ac.in
(c)Asst. Engg. (Ele.) in Energy Efficiency Cell of Surat Municipal Corporation,Surat Gujarat,
jinesh1912@gmail.com
ABSTARCT:
In this paper presents Design, performances and Technical specification of 100KW Grid connected rooftop solar PV
power plant, properly distribution and maintenance of grid connected rooftop solar photovoltaic plant. Module cell
which is multi crystalline silicon module technologies. 100kWp multi crystalline silicon grid connected PV system. Here
the performances indices that are used for comparative studies of systems are performance ratio, reference yield(Yr),
Final yield (Yf), system loss (Ls), Collection loss (Lc), produced energy, energy feed to grid, ambient temperature,
Global irradiation, system efficiency, Discuss result and conclusion.
Keywords: Grid connected, Rooftop solar PV, Performance ratio, Reference yield and Final yield.
I.
INTRODUCTION:
A rooftop pv power station is a photovoltaic system that has its electricity-generating solar panels mounted on the rooftop
of residential or commercial building or structure here 30/12/2013,solar panel’s mounted on surat municipal corporation main
office building. Rooftop mounted systems are small compared to ground-mounted pv power stations with capacities in the
megawatt range here the capacity of 100kwp. Rooftop PV systems on residential buildings typically feature a capacity of about
5 to 20 kilowatts, while those mounted on commercial buildings often reach 100 kilowatts or more. The various components
of such a system include pv modules, mounting system, cables, pv inverters and other electrical accessories. The rooftop solar
PV system could be with or, without having grid interactive, here grid interactive with TORRENT PVT COMPANY. In grid
interactive system, the DC power generating by solar PV panels is converted to AC power using power conditioning
unit and is feed to the grid either of 11 KV three-phase line or, 220V single-phase line depending on the system installed at
institution, commercial establishment or, residential complex.
This system used to generate power during the daytime which is utilized fully by powering the captive load like self
SMC load(street light, flood light, office equipment etc.) and feeding excess power to the grid like TORRENT PVT
COMPANY as long as grid is available. In cases, sometime solar power is no sufficient due to cloud cover etc. the captive
loads are handle by drawing power from the grid. The grid connected rooftop solar PV systems thus works on ‘net-metering’
basis where in the benefit pays to the utility on net meter reading basis only. Ideally, grid interactive systems has not
require battery back up as the grid acts as the back up for feeding excess solar power.
II.
DESIGN OF100KWP ROOFTOP GRID CONNCTED SOLAR PV PLANT IN SURAT MUNICIPAL
CORPORATION

Array layout for 100kwp rooftop grid connected solar pv system of SMC main office building.
Here, following see the drawing of Array layout for 100kwp solar pv system, SMC main office building of surat. SMC building
has circular shape so that here total number of 400 module’s are mounted on circular rooftop.
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International Journal of Innovative and Emerging Research in Engineering
Volume 3, Issue 2, 2016
West site rooftop array

south, east site of rooftop array
Figure 1 Array layout Image of SMC main office building
Single line wiring diagram of SMC interaction with Grid.
Sr. No.
INVERTER
1
2
3
4
30KW
30KW
30KW
10KW
NO. OF MODULE IN
SERIES
20 MODULE
20 MODULE
20 MODULE
20 MODULE
NO. OF STRING IN
PARALLEL
6
6
6
2
TOTAL NO. OF MODUE
TOTAL NO. OF
MODULE
120 MODULE
120 MODULE
120 MODULE
40 MODULE
400 MODULE
Figure 2 Single line wiring diagram of SMC interaction with Grid.
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International Journal of Innovative and Emerging Research in Engineering
Volume 3, Issue 2, 2016
Figure 3 20Module interconnected in series


Location:
Surat Municipal Corporation Main Office Building,
Muglisara, chowk char rasta, surat.
Latitide: 21.2, Longitude: 72.8, Altitude: 14m.
Surat, Gujarat. India.
ITEM DESCRIPTION OF 100KWP ROOFTOP SOLAR PV POWER PLANT IN SURAT MUNICIPAL
CORPORATION:
SR
.
N
O.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
ITEM DESCRIPTION
QT
Y.
UOM
SOLAR PV MODULE, 250W
GRID TIE INVERTER FOR 30KWP RRAY RANGE 480VDC TO 800VDC.
THREE PHASE OUTPUT WITH DATA MONITORING SYSTEM
GRID TIE INVERTER FOR 12KWP RRAY RANGE 420VDC TO 850VDC.
THREE PHASE OUTPUT WITH DATA MONITORING SYSTEM
10 MODULE MOUNTING STRUCTURE FOR 250WP WITH 20 DEG. FIX
TI LD
06 MODULE MOUNTING STRUCTURE FOR 250WP WITH 20 DEG. FIX
TI LD
05 MODULE MOUNTING STRUCTURE FOR 250WP WITH 20 DEG. FIX
TI LD
03 MODULE MOUNTING STRUCTURE FOR 250WP WITH 20 DEG. FIX
TI LD
05 MODULE MOUNTING STRUCTURE FOR 250WP WITH 20 DEG. FIX
TI LD (ELE)
AJB 6 INPUT, 6 OUTPUT WITH FUSE & MOV
AJB 4 INPUT, 4 OUTPUT WITH FUSE & MOV
AC DISTTRIBUTION BOARD , 5X63A 4P MCBS AND 3PHASE MULTI
DATA METER 1X200A 4P MCCB WITH ARM CABLE OUTPUT,
INDOOR
CABLE 1CX4 SQ. MM PVC COPPER
5CX10 SQ. MM X LPE FLRS UNARM CU CABLE
3.5CX120 SQ. MM X LPE FLRS ARMOURD AL CABLE
MINTENANCE FREE CHEMICAL GELERTHING KIT
STRIP GALVENIZED IRON, 25X5 MM EARTHING
TERMINAL, VERTICAL AIR TERMINATION, 4MT
INSTALLATION KIT
400
3
Nos
Nos
1
No
25
Nos
14
Nos
8
Nos
2
Nos
4
Nos
3
1
1
Nos
No
No
900
170
40
3
230
2
1
Mtrs
Mtrs
Mtrs
Nos
Mtrs
Nos
SET
103
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International Journal of Innovative and Emerging Research in Engineering
Volume 3, Issue 2, 2016
TECHNICAL DESCRIPTION OF THE SYSTEM:
PLANT SPECIFICATIONS:
Sr.No.
1
2
3
4
5
6
Parameter
System Type
System Array Capacity Nominal
Single Solar Panel Output
Number of modules
Number of inverters
Number of modules/string/Inverter
7
Module Mounting Structure
8
Plant Output
Value
Solar Photovoltaic Power Generation System.
100KWP (100000Watt)
250W
400
4
20 module in series M30 INV-1
6 String in parallel for M30 INV-1
20 module in series M30 INV-2
6 String in parallel for M30 INV-2
20 module in series M30 INV-3
6 String in parallel for M30 INV-3
20 module in series M30 INV-4
2 String in parallel for M30 INV-4
10 Module Mounting Structure
06 Module Mounting Structure
05 Module Mounting Structure
03 Module Mounting Structure
3 ph.415V AC
MODULE SPECIFICATIONS:
Sr.No.
1
2
3
4
5
6
7
8
Sr.No.
1
2
3
4
5
6
7
8
9
10
11
General Characteristics
Make of Solar Module
Country of Origin
Solar Module Type
Module Dimension(L/W/H in mm)
Module Weight in Kg(lbs)
Number of cell & Size
Frame Material
Glass
Electrical Parameter
Peak Power
Voltage @ Pmax. (Vmpp)
Current @ Pmax.(Impp)
Open Circuit voltage Voc
Short circuit current Isc
Operating Temp in Degree
Power Tolerance
Module Efficiency
Max. Series Fuse (Bottel fuse)
Protection Class
Manufacturing Certified
Description
TATA Solar Power System Ltd
India
Multi Crystalline
1667X1000X33
19.1
60 cells & 156mm
Anodized Aluminium
3.2 mm (Optional ARC)
Value
250W
30.0V
8.33A
36.8V
8.83A
25
+_ 2.5
15
20A
Class A
IEC61215
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International Journal of Innovative and Emerging Research in Engineering
Volume 3, Issue 2, 2016
SOLAR INVERTER M30 & M12:
TECHNICAL DETAILS OF RPI - M30 INVERTER:
Sr.No
1
2
General Characteristic
Type
Make
Description
MPPT
Delta
3
4
Inverter Dimension
Mounting
960X612X278 (h.w.d. in mm)
Wall mounted/Free standing with mounting bracket.
Sr.No.
1
2
3
4
5
Electrical Parameter
Max. DC input voltage nominal
MPPT voltage range
Max. AC output voltage nominal
Nominal Apparent ac power
Operating Temp. Range in degree
Description
33KW
480-800V DC
415V, 3phase, 50Hz.
30KVA
-20c to +60c
TECHNICAL DETAILS OF RPI - M12 INVERTER:
Sr.No
1
2
General Characteristic
Type
Make
Description
MPPT
Delta
3
4
Inverter Dimension
Mounting
625X612X278 (h.w.d. in mm)
Wall mounted/Free standing with mounting bracket.
Sr.No.
1
2
3
4
5
Electrical Parameter
Max. DC input voltage nominal
MPPT voltage range
Max. AC output voltage nominal
Nominal Apparent ac power
Operating Temp. Range in degree
Description
13.2KW
420-850V DC
415V, 3phase, 50Hz.
12KVA
-20c to +60c
A.C. DISTRIBUTION BOX UNIT:
Sr.No
1
2
3
4
Item
Type
Make
Enclosure
Rating
Description
A.C.D.B
Sintex
CRCA Metal Enclosure
200A, 415V, AC 50Hz, 3Phase ,4 Wire
5
Degree of Protection
IP65 (Outdoor)
6
Metering
B
7
Mounting
Wall/ Floor Mounting
8
9
Drawing no.
Part No.
EPS-RP-JSS-092013-04GT
2718.D117
ARRAY JUNCTION BOX:
1
2
3
4
Type
Earthing Provision
Hardware(Accessories)
Protection
Thermoplastic Polycarbonate
Provide
S.S Hardware
IP65
105
5
6
Cable Entry
Mounting
International Journal of Innovative and Emerging Research in Engineering
Volume 3, Issue 2, 2016
Through Cable Glandy
Structure Mounting
CABLE:
1
2
3
4
Type
Conductor
Insulation
Lugs for Cable termination
III.
PVC Cable, Armored & Unarmored Cable
Copper, Aluminium
Sheath, PVC
Part of Installation Kit
SIMULATION RESULTS AND DISCUSSION:
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International Journal of Innovative and Emerging Research in Engineering
Volume 3, Issue 2, 2016
Figure 4 Simulation parameter of 100KW rooftop grid connected system
Figure 5 Array loss factor of 100KW rooftop grid connected system
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International Journal of Innovative and Emerging Research in Engineering
Volume 3, Issue 2, 2016
Figure 6 Performance ratio and nominal energy per day of 100KW grid connected system
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International Journal of Innovative and Emerging Research in Engineering
Volume 3, Issue 2, 2016
Figure 7 Monthly and yearly data of 100KW grid connected system
Figure 8 Loss diagram of 100KW rooftop grid connected system
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International Journal of Innovative and Emerging Research in Engineering
Volume 3, Issue 2, 2016
Following Result can be define as per the above simulation Report avoid the Shading effect.
• Lc: Collection Loss ( Pv array losses) = 1.18KWh/KWp/day ,
• Ls: System Loss (Inverter Loss,…) = 0.1KWh/KWp/day,
• Yf: Produced useful energy (inverter output) = 4.76KWh/KWp/day,
• 214246KWh/yearly Array nominal energy (at STC)
• 177538KWh/yearly Array virtual energy output,
• 173824KWh/yearly Available Energy at inverter output,
• 173824KWh/yearly Energy injected to the Grid.
IV.
CONCLUSION:
Conclusion for 100KWP, 20string, 250W, 400 module and four string inverter (30X3, 12X1) solar Rooftop pv
power plant at SMC,Without shading effect at STC 173824KWh/yearly energy injected to the grid, Performance ratio PR is
78.8% of whole year, system losses Ls and Collection Losses Lc is almost same of whole year but energy output Yf form the
inverter should less in June, July and August compare to other month of whole year, Performance ratio should be high in
December during the insolation should be high and energy feed to grid 173824KWh/yearly at Ambient temp 26.96 Degree and
Global irradiation 2043.4KWh/m.sq.
REFERENCES:
[1] Omkar K, Srikanth MV, Swaroop KP and Rama Rao PVV, "Performance evaluation of 50KWp rooftop solar PV plant,"
Industrial Instrumentation and Control (ICIC), 2015 International Conference on, Pune, 2015, pp. 761-765.
[2] S. Singh, R. Kumar and V. Vijay, "Performance analysis of 58 kW grid-connected roof-top solar PV system," Power
India International Conference (PIICON), 2014 6th IEEE, Delhi, 2014, pp. 1-6.
AUTHOR PROFILE
Bhavin Ahir - PG (ME/M.Tech) final year Student in
Electrical Engineering from Sarvajanik College of
Engineering and Technology, surat. Still IDP Project work
on Design Simulation Analysis and Financial Model of
Rooftop Grid Connected Solar Photovoltaic System in
Surat Municipal Corporation, Surat, Have research interests
are Renewable Energy System and Power system.
Aditi Hajari - Associate Professor of EED Sarvajanik
College of Engineering and Technology, surat ,
Qualification: M.S. (Control System), Area of
Interest:Control Systems, Power Electronics, Elements of
Electric.
Jinesh Patel - Working as are Asst.Engineer(Ele.) in the
Energy Efficiency Cell of Surat Municipal Corporation, He
is looking for various Renewable Energy projects like
Solar, Wind, etc. and Energy Auditing Works of various
HT Service of SMC.
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