Free Essay

Utility Scale

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Submitted By Nanakwame
Words 6264
Pages 26
Acknowledgement
&
Project Overview
The aim of this project report is to estimate and calculate the approximate design of a 1MW solar PV power plant (utility scale).
The total no. of solar panel required and the different parameters of the solar panel estimated. A site in West Bengal is taken virtually to estimate the solar intensity of the site which is most important for calculation of such type of report.
A Single Line Diagram (SLD) has been introduced in this report.
Also the brief details of the materials/equipments (solar panels, inverters, protective gears, transformer, SCADA etc.) used to set up a 1MW power plant have been highlighted.
A financial overview with a possible income datasheet included in the project report
Please give your feedback via email to this email address: amrit.mandal0191@gmail.com 1

Contents

1. Aim of the project
2. Financial overview
3. Global market price trends of solar panel
4. Technical Calculation/Estimation & Specification
i.

Solar panel

ii.

Inverter

iii.

Protective gears

iv.

SCADA system

v.

Transformer

5. Single line diagram & Schematics

2

1. Aim of the project

Aim of this paper is to give an overview of a 1MW solar PV power plant (utility scale). How the project will work?
1. Using solar pv modules, solar power generates in DC which is converted into
AC power and then using a power transformer the generated and modified
AC power will be fed to the grid.
2. No battery storage introduced here because the plant will only functions in the daylight and here the generated power will be sold to the grid.
3. For the minimal operation and maintenance of the plant, an off-grid/stand alone 5KW solar power can be introduced.

The benefits and the installation cost details are highlighted in the next article.

3

2. Financial Overview
Installation cost, total project cost, maintenance cost and also the total & net income from the plant over a year are highlighted in this article.

Installation cost
1. Solar panels
i.

German tech.

5.93 cr

ii.

China tech.

4.1 cr

2. Central inverters(4)

1 cr

3. Combiner + junction boxes

30 lacs

4. Protective gears arrangment

10 lacs

5. SCADA & Data logger system

10 lacs

6. Land bank

5 lacs (approx.)

7. Erection of project

10 lacs

8. Total project cost
i.

For German Tech.

7.58 cr

ii.

For China Tech

5.75 cr

Maintenance cost
1. Human resource

20 lacs/ year

2. PV maintenance

1 lacs/ year

3. Site maintenance

1 lacs/ year

4. Total maintenance cost

22 lacs/ year

4

Income from the 1 MW solar PV plant
The site chosen in West Bengal where daily sun hours=5 hrs through out the year.
Maximum Solar intensity on the site= 6.18 KW-h/m2/day
Total sunny days available in west Bengal = 255 days

Income from plant
1. Daily units generated

5000 units

2. Yearly units generated

5000x365=1,825,000 units

3. Govt. pays per unit

12.5 ₹/ unit

(i.e. state electricity board’s power purchase rate)

(according to WBREDA 2011-12)

4. Total income over the year

2.28 cr

5. net income over the year

2.28-0.22=2.06 cr

Govt. subsidiaries :
Central govt. or MNRE dept. will pay 30% of the total project cost or provide low bank loan interest (whichever is less)
For this project, by taking the 30% govt. subsidy over the installation cost, investment will be:
i.

5.30 cr for German PV technology

ii.

4.02 cr for China PV technology

5

Variation of market price index solar PV modules:
From august, 2011 to august, 2012
Price trends August 2012
Module type, origin €/
Wp

Trend since 201207

Trend since 201201

Crystalline
Germany

0.88

- 3.3 %

- 17.8 %

Crystalline China

0.61

- 4.7 %

- 22.8 %

Crystalline Japan

0.91

- 2.2 %

- 13.3 %

Thin film CdS/CdTe 0.59

- 1.7 %

- 13.2 %

Thin film a-Si

0.50

- 2.0 %

- 16.7 %

Thin film a-Si/µ-Si

0,57

- 3.4 %

- 25.0 %

Price trends July 2012
Module type, origin €/
Wp

Trend since 201206

Trend since 201201

Crystalline
Germany

0.91

- 2.2 %

- 15.0 %

Crystalline China

0.64

- 3.0 %

- 19.0 %

Crystalline Japan

0.93

- 1.1 %

- 11.4 %

Thin film CdS/CdTe 0.60

0.0 %

- 11.8 %

Thin film a-Si

0.51

- 3.8 %

- 15.0 %

Thin film a-Si/µ-Si

0,59

- 4.8 %

- 22.4 %

6

Price trends June 2012
Module type, origin €/
Wp

Trend since 201205

Trend since 201201

Crystalline
Germany

0.93

- 3.1 %

- 13.1 %

Crystalline China

0.66

- 4.3 %

- 16.5 %

Crystalline Japan

0.94

- 2.1 %

- 10.5 %

Thin film CdS/CdTe 0.60

- 1.6 %

- 11.8 %

Thin film a-Si

0.53

- 3.6 %

- 11.7 %

Thin film a-Si/µ-Si

0,62

- 4.6 %

- 18.4 %

Price trends May 2012
Module type, origin €/
Wp

Trend since 201204

Trend since 201201

Crystalline
Germany

0.96

- 3.0 %

- 10.3 %

Crystalline China

0.69

- 2.8 %

- 12.7 %

Crystalline Japan

0.96

- 2.0 %

- 8.6 %

Thin film CdS/CdTe 0.61

0.0 %

- 10.3 %

Thin film a-Si

0.55

- 1.8 %

- 8.3 %

Thin film a-Si/µ-Si

0,65

- 4.4 %

- 14.5 %

Price trends April 2012
Module type, origin €/
Wp

Trend since 201203

Trend since 201201

Crystalline
Germany

0.99

- 2.9 %

- 7.5 %

Crystalline China

0.71

- 4.1 %

- 10.1 %

Crystalline Japan

0.98

- 2.0 %

- 6.7 %

Thin film CdS/CdTe 0.61

0.0 %

- 10.3 %

Thin film a-Si

0.56

- 1.8 %

- 6.7 %

Thin film a-Si/µ-Si

0,68

- 4.2 %

- 10.5 %

7

Price trends March 2012
Module type, origin €/
Wp

Trend since 201202

Trend since 201201

Crystalline
Germany

1.02

- 1.0 %

- 4.7 %

Crystalline China

0.74

- 3.9 %

- 6.3 %

Crystalline Japan

1.00

- 2.0 %

- 4.8 %

Thin film CdS/CdTe 0.61

- 3.2 %

- 10.3 %

Thin film a-Si

0.57

0.0 %

- 5.0 %

Thin film a-Si/µ-Si

0,71

- 1.4 %

- 6.6 %

Price trends February 2012
Module type, origin €/
Wp

Trend since 201201

Trend since 201101

Crystalline
Germany

1.03

- 3.7 %

- 39.7 %

Crystalline China

0.77

- 2.5 %

- 47.6 %

Crystalline Japan

1.02

- 2.9 %

- 37.4 %

Thin film CdS/CdTe 0.63

- 7.4 %

- 49.5 %

Thin film a-Si

0.57

- 5.0 %

- 47.0 %

Thin film a-Si/µ-Si

0.72

- 5.3 %

- 43.0 %

Price trends January 2012
Module type, origin €/
Wp

Trend since 201112

Trend since 201101

Crystalline
Germany

1.07

- 4.5 %

- 37.3 %

Crystalline China

0.79

- 2.5 %

- 46.3 %

Crystalline Japan

1.05

- 4.5 %

- 35.6 %

Thin film CdS/CdTe 0.68

- 6.8 %

- 45.5 %

Thin film a-Si

0.60

- 6.3 %

- 44.2 %

Thin film a-Si/µ-Si

0.76

- 7.3 %

- 39.8 %

8

Price trends December 2011
Module type, origin €/
Wp

Trend since 201111

Trend since 201101

Crystalline
Germany

1.12

- 4.8 %

- 34.4 %

Crystalline China

0.81

- 4.3 %

- 44.9 %

Crystalline Japan

1.10

- 3.6 %

- 32.5 %

Thin film CdS/CdTe 0.73

- 6.6 %

- 41.5 %

Thin film a-Si

0.64

- 4.9 %

- 40.5 %

Thin film a-Si/µ-Si

0.82

- 3.5 %

- 35.1 %

Price trends November 2011
Module type, origin €/
Wp

Trend since 201110

Trend since 201101

Crystalline
Germany

1.18

- 8.7 %

- 31.1 %

Crystalline China

0.85

- 7.7 %

- 42.2 %

Crystalline Japan

1.14

- 6.3 %

- 30.0 %

Thin film CdS/CdTe 0.78

- 6.9 %

- 37.4 %

Thin film a-Si

0.67

- 8.5 %

- 37.4 %

Thin film a-Si/µ-Si

0.85

- 5.0 %

- 32.8 %

Price trends October 2011
Module type, origin €/
Wp

Trend since 201109

Trend since 201101

Crystalline
Germany

1.29

- 3.0 %

- 24.5 %

Crystalline China

0.92

- 6.2 %

- 37.6 %

Crystalline Japan

1.22

- 3.7 %

- 25.3 %

Thin film CdS/CdTe 0.84

- 8.8 %

- 32.8 %

Thin film a-Si

0.74

- 4.5 %

- 31.6 %

Thin film a-Si/µ-Si

0.89

- 3.9 %

- 29.2 %

9

Price trends September 2011
Module type, origin €/
Wp

Trend since 201108

Trend since 201101

Crystalline
Germany

1.33

- 4.4 %

- 22.2 %

Crystalline China

0.98

- 6.0 %

- 33.5 %

Crystalline Japan

1.27

- 4.7 %

- 22.4 %

Thin film CdS/CdTe 0.92

- 6.9 %

- 26.3 %

Thin film a-Si

0.77

- 9.6 %

- 28.4 %

Thin film a-Si/µ-Si

0,93

- 5.2 %

- 26.4 %

Price trends August 2011
Module type, origin €/
Wp

Trend since 201107

Trend since 201101

Crystalline
Germany

1.39

- 4.7 %

- 18.6 %

Crystalline China

1.04

- 7.1 %

- 29.3 %

Crystalline Japan

1.33

- 3.4 %

- 18.5 %

Thin film CdS/CdTe 0.99

- 3.7 %

- 20.9 %

Thin film a-Si

0.85

- 5.8 %

- 20.8 %

Thin film a-Si/µ-Si

0,98

- 1.8 %

- 22.3 %

1.00 EUR = 69.3608 INR
Euro
1 EUR = 69.3608 INR

Indian Rupee



10

1 INR = 0.0144174 EUR

market scenario of solar PV modules
1.6

aug,2012

1.4

jul,2012

EURO/Wp

1.2

jun,2012 may,2012 1

apr,2012

0.8

mar,2012

0.6

feb,2012

0.4

jan,2012

0.2

dec,2011 nov,2011 0
Crystalline Crystalline Crystalline Thin film Thin film a- Thin film aGermany
China
japan
CdS/CdTe
Si
Si/µ-Si

11

oct,2011

Calculation details of solar modules overall ratings and no. of solar panel used

Worksheet for determining required number of panels
Total capacity of the plant

1MWp

Avg. sun hrs per day

5

Total power/day

5MW p

Total watt-hrs per day

5x1000x1000 W-h/day

Maximum solar insolation at the site

6.18 KW-h/m2/day

Divide total watt-hrs/day by solar insolation 809061.4887

Multiply this figure by 1.2(to cover system inefficiency)
No. of solar panel=Divide this figure by the Wp(here 300Wp) of the chosen solar panel 809061.4887x1.2=970873.7864
3236.3
~3236**

**for better efficiency and to utilize the inverter and other components better we should consider the no. of solar panel=3240

12

Solar PV arrangement & overall system rating
Rating of solar panel
Wattp (W)
DC Voltage (Vmp( V))
DC Current (Imp (A))
Open Circuit Voltage (Voc (V))
Short Circuit Current (Isc (A))

300Wp
36.72V
8.17A
45.50
8.65

Setup of panels as per requirements
By calculation and the demand of the plant,
The total no. of solar pv panels to be used= 3236
From 3236 panels, total 3240 panels are considered to generate the required energy1MW.
Configuration details:




3240 panels are divided into 4 groups- each group containing 810 solar panels.
In each group, 810 panels are further divided into 54 strings
Each string contains 15 solar panels.

Electrical calculation:
Output voltage of each string
Output current of each string
Output voltage of each group
Output current of each group

36.72x15=550.8 VDC
8.17 ADC
550.8 VDC
8.17x54=441.18 ADC

NOTE: in each string, the solar panels are connected in series to increase the voltage. And

in each group, the 54 strings are connected in parallel to increase the current.

DC output power calculation:
Output power of each string
Output power of each group
Output power of 4 groups

550.8x8.17=4.5 KW
243KW
972KW

13






The above specifications are available with TITAN ENERGY SYSTEMS LTD.
Their module spec TITAN M6-72 Polycrystalline (high efficiency) has been used as a reference.
A datasheet/spec. sheet of TITAN M6-72 Polycrystalline has been provided in this report.
Please go through it for more details.

14

Titan Energy Systems Ltd a member of SARSA group

An ISO 9001:2008 Certified Company

PV Module TITAN M6-72
Typical Electrical Characteristics
Type
Pmp (W) 265
Max Power

TITAN M6-72
270

275

280

290

295

(W)
Max Power Voltage Vmp(V) 34.33

34.75

35.04

Max Power Current Imp (A) 7.72
Open Circuit Voltage Voc (V) 43.27

7.77

7.85

7.96

43.70 43.99

44.28

8.30

8.34

Electrical parameters tolerance
Max System Voltage

8.39

35.18

8.46

35.63 36.12 36.51
8.00

8.03

8.08

44.42 44.78 45.00
8.49

8.53

8.56

8.17

VDC

8.65

72, Multi-Crystalline, 12 x 6 Matrix
6” x 6” / 156 x 156 mm

No. of By-pass Diodes

3

Max Series Fuse

(A)

15

Pm Temperature Co-efficient (γ)
Isc Temperature Co-efficient (α)

(%/°C)
(%/°C)

-0.41
+0.04

Voc Temperature Co-efficient (β)

(%/°C)

-0.32

• Positive power tolerance
• High Efficiency Multi Crystalline Modules

NOCT at STC

(°C)

45±1

• TUV Certifications:
EN IEC 61215 : 2005
EN IEC 61730-1 : 2004 / 2007
EN IEC 61730-2 : 2004 / 2007
EN IEC 61701 : 2010-02
• Withstands heavy loading due to snow & ice;
Has higher safety margin for storm weather and gale winds

Mechanical Characteristics

No. of Drain Holes in Frame

12

• Qualified for Highly corrosive WetAtmospheres & Environments

Glass Type and Thickness

4 mm Thick, Low iron, Tempered

Product Guarantee :

5 years

Limited Power Warranty : 90% @ 12 Years
80% @ 25 Years

Tyco / ZJRH / Huber + Suhner

Junction Box

Tyco / MC4

Type of connector
Dimensions (L x W x Th)

mm

1975 x 988 x 50

Weight

Kg

27.0

Packing Configuration
Packing Configuration

20 Modules in each pallet

1 * 20 Ft

200 Modules

1 * 40 Ft STD/HQ

400 modules

Certifications
Absolute Ratings
Operating Temperature

(°C)

-40 ~ +85

Storage Temperature

(°C)

-40 ~ +85

NOTE: The data presented may change due to further improvements in the product.

15

8.25

45.50 45.58

±5%

Cell Size

Strengths

305

36.72 36.97

1000

Number, type and arrangement of cells

High Efficiency PV Modules

300

+0 to 4.9Wp or ±2.5%

Power Tolerance

Short Circuit Current Isc (A)

285

8.68

PV Module TITAN M6-72
Typical I-V Curves

Current (A)

10.0

8.0

6.0
4.0

1000 W/m2 at 25O C
2

O

800 W/m at 25 C
600 W/m2 at 25O C
2

O

400 W/m at 25 C

2.0 200 W/m2 at 25O C
2

O

1000 W/m at 50 C
0.0

10.0

20.0

30.0

50.0

40.0

Voltage (V)
Current/voltage dependence on irradiance and module temperature.
These I-V curves indicate the effect of temperature and light intensity on module Performance.

Dimensions
Sl.No.Label

100+1mm

237.5+1 mm

Terminal Box

DATA Label
Warning Label

592+1mm

375+1 mm

3.9 mm Ø EARTHING
HOLES - 2 nos

Embossed
Earth Symbol

(One on each long member)
8X12- MOUNTING
SLOTS - 10 nos

591+1mm

(5 on each long member)

100+1mm
1975± 1 mm

1975 ± 1mm

4 Sq mm Cable, 1Mtr Length with Connectors
592+1mm

4.5mm Ø DRAIN HOLES -12 nos

375+1 mm

943.5+1 mm

100+1mm
988± 1 mm

FRONT VIEW

100+1 mm

50+0.5 mm

988+1 mm

FRAME

REAR VIEW

SIDE RAIL

PV Module Products
M6-72 Family Series (305Wp to 125Wp) : M6-72, M6-60, M6-54 & M6-36 - Certified for IEC Standards
M6-60: Certified for UL (USA & Canada) Standard; M6-72: Certification for UL (USA & Canada) is in Progress
S6-60 Family Series (250Wp to 120Wp) : S6-60, S6-54 & S6-36 - Certified for IEC Standards
S6-60 - Certified for UL (USA & Canada) Standard
S6-72 Family Series (300Wp to 285Wp) : Certification for IEC & UL (USA & Canada) Standards
S5-96 Family Series (250Wp to 75Wp) : S5-96, S5-72, S5-60, S5-54 & S5-36 - Certified for IEC Standards
Corporate Office (India) :
TITAN Energy Systems Ltd,
16, Aruna Enclave, Trimulgherry,
Secunderabad – 500 015, INDIA
Phone: +91 (0)40 27791085, 27790751
Fax: +91 (0)40 27795629
Email: info@titan-energy.com

16

Sales Office (Europe) :
TITAN Energy Systems Ltd,
Basel, 4052
Switzerland
Phone: +41-6150-0052-9

Email: info.eu@titan-energy.com

www.titan-energy.com

Inverter Details & Specification
Type of the inverter: central inverter considered
Recommended specification
Input (DC)
Max input power
DC voltage range, mpp (UDC)
Maximum DC voltage (Umax (DC))
Maximum DC current (Imax (DC))
Voltage ripple
Number of protected DC inputs (parallel)

300 kWp
450 to 750 V (- 825 V)
900 V (1000 V)
600 A
< 3%
2 (+/-) / 8

Output (AC)
250 kW

Nominal AC output power (PN (AC))
Nominal AC current (IN (AC))
Nominal output voltage (UN (AC))
Output frequency
Harmonic distortion, current
Power factor compensation (cosϕ)
Distribution network type





485 A
300 V
50 / 60 Hz
< 3%
Yes
TN and IT

To meet the above stated criteria, central inverter manufactured by ABB is considered. PVS800-57-0250kW-A inverter manufactured by ABB considered.
Total 4 inverters of PVS800-57-0250kW-A type required to generate the 1MW power. Brief details of this inverter can be collected from the official website of
ABB.

17

Solar inverters

ABB central inverters
PVS800
100 to 500 kW

ABB central inverters raise reliability, efficiency and ease on installation to new levels. The inverters are aimed at system integrators and end users who require high performance solar inverters for large photovoltaic power plants and industrial and commercial buildings. The inverters are available from 100 kW up to 500 kW, and are optimized for cost-efficient multimegawatt power plants.
World’s leading inverter platform
The ABB solar inverters have been developed on the basis of decades of experience in the industry and proven technology platform. Unrivalled expertise from the world’s market and technology leader in variable speed AC and DC drives is the hallmark of the new solar inverter series.

Based on ABB’s highly successful platform of industrial drives - the most widely used industrial drives on the market – the inverters are the most efficient and cost-effective way to convert the direct current generated by solar modules into high-quality and
CO 2-free alternating current that can be fed into the power network.
Solar inverters from ABB
ABB central inverters are ideal for large photovoltaic power plants and medium sized power plants installed in commercial or industrial buildings.
High efficiency, proven components, compact and modular design and a host of life cycle services ensures ABB central inverters provide a rapid return on investment.

18

Highlights
− High efficiency and long operating life
− Modular and compact product design
− Extensive DC and AC side protection
− Power factor compensation as standard − Fast and easy installation
− Complete range of industrial-type data communication options, including remote monitoring
− Life cycle service and support through ABB’s extensive global service network

ABB central inverters
Maximum energy and feed-in revenues
ABB central inverters have a high efficiency level. Optimized and accurate system control and a maximum power point tracking (MPPT) algorithm ensure that maximum energy is delivered to the power network from the solar modules.
For end users this generates the highest possible revenues from the feed-in tariffs now common in many countries.
Proven ABB components
The inverters comprise proven ABB components with a long track record of performance excellence in demanding applications and harsh environments.
Equipped with extensive electrical and mechanical protection, the inverters are engineered to provide a long and reliable service life of at least 20 years.
Compact and modular design
The inverters are designed for fast and easy installation. The industrial design and modular platform provides a wide range of options like remote monitoring,

fieldbus connection and integrated DC cabinets. The inverters are customized and configured to meet end user needs and are available with short delivery times.
Effective connectivity
ABB’s transformerless central inverter series enables system integrators to design the solar power plant using a combination of different power rating inverters, which are connected to the medium voltage grid centrally.
In certain conditions, the ABB central inverter’s topology allows a parallel connection directly to the AC side, enabling electricity to be fed to the grid via a single transformer. This avoids the need for each central inverter to have its own transformer, thereby saving cost and space. However, in systems where the DC side needs to be grounded, an inverter dedicated winding within a transformer, or a separate transformer, must be used always.

Technical data and types
Type designation

PVS800-57-0100kW-A

PVS800-57-0250kW-A

PVS800-57-0500kW-A

100 kW

250 kW

500 kW

Input (DC)
Recommended max input power (PPV)

1)

120 kWp

300 kWp

600 kW p

450 to 750 V (- 825 V*)

DC voltage range, mpp (UDC)

450 to 750 V (- 825 V*)

450 to 750 V (- 825 V*)

Maximum DC voltage (U max (DC))

900 V (1000 V*)

900 V (1000 V*)

900 V (1000 V*)

Maximum DC current (I max (DC))

245 A

600 A

1145 A

Voltage ripple

< 3%

Number of protected DC inputs (parallel)

1 (+/-) / 4

< 3%
2)

2 (+/-) / 8

< 3%
2)

4 (+/-) / 16

2)

Output (AC)
Nominal AC output power (PN (AC))

100 kW

250 kW

500 kW

Nominal AC current (IN (AC))

195 A

485 A

965 A

Nominal output voltage (UN (AC))
Output frequency

3)

Distribution network type

6)

300 V
50 / 60 Hz

< 3%

< 3%

< 3%

Yes

Yes

Yes

TN and IT

TN and IT

TN and IT

98.0%

98.0%

97.5%

5)

Power factor compensation (cosϕ)

300 V
50 / 60 Hz

98.0%

Harmonic distortion, current

300 V
50 / 60 Hz

4)

97.6%

97.6%

< 350 W

< 300 W

< 600 W

Efficiency
Maximum
Euro-eta

7)

7)

Power consumption
Own consumption in operation
Standby operation consumption

< appr. 55 W

< appr. 55 W

< appr. 55 W

230 V, 50 Hz

230 V, 50 Hz

230 V, 50 Hz

Width / Height / Depth, mm (W / H / D)

1030 / 2130 / 644

1830 / 2130 / 644

3030 / 2130 / 644

Weight appr.

550 kg

1100 kg

1800 kg

External auxiliary voltage

8)

Dimensions and weight

1)
2)
3)
4)

Inverter limits the power to a safe level
Optional MCB inputs, 80 A each
Grid voltage (+/- 10%)
Grid frequency (48 to 63 Hz)

5)
6)
7)
8)

At nominal power
300 V output must be IT type
Without auxiliary power consumption at 450 V UDC
115 V, 60 Hz optional

2 ABB solar inverters | Product flyer for PVS800

19

*

Max 1000 V DC input voltage as an option with mppt range 450 to 825 V. If DC is >
1000 VDC inverter is not damaged, but will not start.

ABB central inverter design and grid connection

EMC filter 3

Filter

EMC filter PVS800 inverter

Control and monitor

EMC filter 3

Filter

EMC filter PVS800 inverter

Control and monitor

Type designation

PVS800-57-0100kW-A

PVS800-57-0250kW-A

PVS800-57-0500kW-A

100 kW

250 kW

500 kW

Environmental limits
Degree of protection

IP22 / IP42

Ambient temperature range (nominal ratings)
Maximum ambient temperature

11)

9)

IP22 / IP42

-15 °C to +40 °C

9)

IP22 / IP42

-15 °C to +40 °C

9)

-15 °C to +40 °C

+50 °C
12)

+50 °C

+50 °C

15% to 95%

Relative humidity, not condensing
Maximum altitude (above sea level)

10)

15% to 95%

15% to 95%
2000 m

2000 m

2000 m

Maximum noise level

75 dBA

75 dBA

Cooling air flow

1300 m 3/h

1880 m3/h

3760 m3/h

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

DC reverse polarity

Yes

Yes

Yes

AC and DC short circuit and over current

Yes

Yes

Yes

AC and DC over voltage and temperature

Yes

Yes

Yes

Local user interface

ABB local control panel

ABB local control panel

ABB local control panel

Analog inputs / outputs

1/2

1/2

1/2

Digital inputs / relay outputs

3/1

3/1

3/1

13)

75 dBA

13)

Protection
Ground fault monitoring
Grid monitoring
Anti-islanding

9)

9)

9)

User interface and communications

Fieldbus connectivity

Modbus, PROFIBUS, Ethernet

Product compliance
Safety and EMC

CE conformity according to LV and EMC directives

Certifications and approvals
Grid support
9)
10)
11)
12)
13)

VDE, CEI, UNE, RD, EDF
Reactive power compensation, Power reduction, Low voltage ride through

9)

Optional
Frosting is not allowed. May need optional cabinet heating.
Power derating after 40 °C
Power derating above 1000 m. Above 2000 m special requirements.
At partial power typically < 70 dBA
Product flyer for PVS800 | ABB solar inverters 3

20

ABB central inverter data communication principle

Central inverter

Central inverter
250 kWp solar array

Local PC
Field bus
Medium voltage transformers Modbus

Adapter module

Internet
Remote PC

3-phase 20 kV
250 kWp solar array

250 kWp solar array
Central inverter

Accessories
− Solar array junction boxes with string monitoring − Remote monitoring solutions
− Warranty extensions possible
− Solar inverter care contracts

Central inverter

Options
− Increased IP ratings for cabinets
− Integrated DC input extension cabinets − AC output grounding switch
− Cabinet heating
− I/O extensions
− Extended voltage range, 1000 VDC max. − DC grounding (negative and positive)
− Fieldbus and Ethernet connections

Support and service
ABB supports its customers with a dedicated service network in more than 60 countries and provides a complete range of life cycle services from installation and commissioning to preventative maintenance, spare parts, repairs and recycling.

For more information contact your local ABB representative or visit: www.abb.com/solar www.abb.com
© Copyright 2011 ABB. All rights reserved.
Specifications subject to change without notice.

Integrated DC input extension cabinets

Junction box with monitoring

21

3AUA0000057380 REV F EN 21.4.2011 #15642

250 kWp solar array

Protection and safety measurements
A schematic of the protection system

22

The main protections and protective gears are named here.
DC Side Protection
1. Fuses
A. for string protection
B. Fuses for array/inverter input protection

2. Fuse holdersA.
B.
C.
D.
E.

For string protection
Panel mount fuse holder
In-line fuse holders
Array/inverter input protection
Dead front fuse covers

3. Surge protection devices

4. DC switch
A. Load break disconnect switches
B. High power switches

5. Cooling devices
A. Air and liquid cooled solutions

6. Wire management solutions
A. Finger-safe power distribution blocks
B. Finger-safe comb wiring bar

7. Ground-fault protection

23

AC Side Protection
1. Circuit breaker

2. Bar contractor

3. Insulation monitoring device

24

 For safety purpose and protection of the modules and plant equipments , protective gears from
Schneider Electric have been considered for maximum benefits.
 Details of safety measurements and protective gears provided by Schneider Electric given in their official website.

25

Solar SCADA system
Data acquisition system for a solar plant is very important because it is important to monitor the over all system condition including input/output condition, temperature, solar insolation, weather condition, voltage/current fluctuation, output power condition, surge effect, load dispatch etc.
So, in this point of view a compact system with well service provider need to be pointed out. ABB provides the monitoring facility/SCADA for solar (PV) power plants and the ABB inverter itself has an in-built SCADA system.

So, for monitoring and controlling of the over all power system of the plant, ABB SOLAR SCADA system is recommended here.

26

Block diagram & SLD
Block diagram representation of the system with SCADA &
Data Logger facility

27

YIELD ASSESSMENT OF THE PHOTOVOLTAIC POWER PLANT
Report number: PV-2037-1209-6
Issued: 23 September 2012 01:12 CET (GMT +0100)

1. Site info
Site name:

2. PV system info

Durgapur
Bardhaman, West Bengal, India

Coordinates:
Elevation a.s.l.:
Slope inclination:
Slope azimuth:

23° 32' 37.84" N, 87° 22' 44.67" E
69 m

61° northeast

Annual global in-plane irradiation: 1942 kWh/m2
Annual air temperature at 2 m: 26.3 °C

Installed power:
Type of modules:
Mounting system:
Azimuth/inclinations:
Inverter Euro eff.:
DC / AC losses:
Availability:

1000.0 kWp crystalline silicon (c-Si) fixed mounting, free standing 2 angles
180° (south) / 48° (winter), 17° (summer)
97.5%
5.5% / 1.5%
99.0%

Annual average electricity production:
Average performance ratio: 75.8%

1470.7 MWh

Location on the map: http://solargis.info/imaps/#loc=23.543845,87.379074&tl=Google:Satellite&z=14

3. Geographic position

Google Maps © 2012 Google

4. Terrain horizon and day length

Left:

Path of the Sun over a year. Terrain horizon (drawn by grey filling) and module horizon (blue filling) may have shading effect on solar radiation. Black dots show True Solar Time. Blue labels show Local Clock Time.

Right:

Change of the day length and solar zenith angle during a year. The local day length (time when the Sun is above the horizon) is shorter compared to the astronomical day length, if obstructed by higher terrain horizon.

© 2012 GeoModel Solar s.r.o.

page 1 of 4

Site: Durgapur, India, lat/lon: 23.5438°/87.3791°
PV system: 1000.0 kWp, crystalline silicon, fixed 2 angles, azim. 180° (south), inclination W 48°, S 17°

5. Global horizontal irradiation and air temperature - climate reference
Month
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Year

Ghm

Ghd

Dhd

T24

126
139
184
192
190
152
140
140
132
141
127
119
1782

4.05
4.96
5.93
6.42
6.12
5.08
4.51
4.51
4.40
4.56
4.25
3.83
4.88

2.10
2.23
2.56
2.93
3.28
3.17
2.98
2.92
2.66
2.34
2.13
2.04
2.61

18.1
22.1
27.1
31.8
33.7
32.0
29.3
28.4
27.4
25.2
21.8
18.7
26.3

Long-term monthly averages:
Ghm
Ghd
Dhd
T24

Monthly sum of global irradiation [kWh/m2]
Daily sum of global irradiation [kWh/m2]
Daily sum of diffuse irradiation [kWh/m2]
Daily (diurnal) air temperature [°C]

6. Global in-plane irradiation
Fixed surface, azimuth 180° (south), inclination. winter 48°, summer 17°

Month
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Year

Gim

Gid

Did

Rid

Shloss

166
168
189
196
185
146
135
139
137
157
163
161
1942

5.35
5.99
6.09
6.54
5.96
4.87
4.35
4.48
4.57
5.06
5.44
5.18
5.32

2.33
2.39
2.51
2.98
3.23
3.08
2.90
2.89
2.71
2.35
2.32
2.28
2.67

0.08
0.10
0.12
0.02
0.02
0.01
0.01
0.01
0.01
0.09
0.09
0.08
0.05

0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0

Long-term monthly averages:
Gim
Gid
Did
Rid

Monthly sum of global irradiation [kWh/m2]
Daily sum of global irradiation [kWh/m2]
Daily sum of diffuse irradiation [kWh/m2]
Daily sum of reflected irradiation [kWh/m2]

Shloss

Losses of global irradiation by terrain shading [%]

Average yearly sum of global irradiation for different types of surface:

Horizontal
Optimally inclined (24°)
2-axis tracking
Your option

© 2012 GeoModel Solar s.r.o.

kWh/m2
1782
1905
2256
1941

Report number: PV-2037-1209-6

relative to optimally inclined
93.5%
100.0%
118.4%
101.9%

Issued: 23 September 2012 01:12 CET (GMT +0100)

page 2 of 4

Site: Durgapur, India, lat/lon: 23.5438°/87.3791°
PV system: 1000.0 kWp, crystalline silicon, fixed 2 angles, azim. 180° (south), inclination W 48°, S 17°

7. PV electricity production in the start-up

Month
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Year

Esm

Esd

Etm

Eshare

PR

131
129
141
142
134
107
101
105
104
120
127
127
1470

4.24
4.61
4.55
4.74
4.32
3.59
3.27
3.39
3.47
3.88
4.24
4.10
4.03

131.3
129.1
141.0
142.1
134.0
107.7
101.5
105.1
104.1
120.3
127.3
127.2
1470.7

8.9
8.8
9.6
9.7
9.1
7.3
6.9
7.1
7.1
8.2
8.7
8.6
100.0

79.2
77.0
74.6
72.5
72.6
73.7
75.2
75.7
76.0
76.7
77.9
79.2
75.8

Long-term monthly averages:
Esm
Esd
Etm

Monthly sum of specific electricity prod. [kWh/kWp]
Daily sum of specific electricity prod. [kWh/kWp]
Monthly sum of total electricity prod. [MWh]

Eshare
PR

Percentual share of monthly electricity prod. [%]
Performance ratio [%]

8. System losses and performance ratio

Energy conversion step

Energy output

Energy loss

Energy loss

[kWh/kWp]

[kWh/kWp]

[%]

[partial %]

Performance ratio
[cumul. %]

1. Global in-plane irradiation (input)

1941

-

-

100.0

100.0

2. Global irradiation reduced by terrain shading

1941

0

0.0

100.0

100.0

3. Global irradiation reduced by reflectivity

1886

-55

-2.8

97.2

97.2

4. Conversion to DC in the modules

1637

-249

-13.2

86.8

84.3

5. Other DC losses

1547

-90

-5.5

94.5

79.7

6. Inverters (DC/AC conversion)

1508

-39

-2.5

97.5

77.7

7. Transformer and AC cabling losses

1486

-22

-1.5

98.5

76.6

8. Reduced availability

1471

-15

-1.0

99.0

75.8

1471

-470

-24.2

-

75.8

Total system performance

Energy conversion steps and losses:
1. Initial production at Standard Test Conditions (STC) is assumed,
2. Reduction of global in-plane irradiation due to obstruction of terrain horizon and PV modules,
3. Proportion of global irradiation that is reflected by surface of PV modules (typically glass),
4. Losses in PV modules due to conversion of solar radiation to DC electricity; deviation of module efficiency from STC,
5. DC losses: this step assumes integrated effect of mismatch between PV modules, heat losses in interconnections and cables, losses due to dirt, snow, icing and soiling, and self-shading of PV modules,
6. This step considers euro efficiency to approximate average losses in the inverter,
7. Losses in AC section and transformer (where applicable) depend on the system architecture,
8. Availability parameter assumes losses due to downtime caused by maintenance or failures.
Losses at steps 2 to 4 are numerically modeled by pvPlanner. Losses at steps 5 to 8 are to be assessed by a user. The simulation models have inherent uncertainties that are not discussed in this report. Read more about simulation methods and related uncertainties to evaluate possible risks at http://solargis.info/doc/pvplanner/.

© 2012 GeoModel Solar s.r.o.

Report number: PV-2037-1209-6

Issued: 23 September 2012 01:12 CET (GMT +0100)

page 3 of 4

Site: Durgapur, India, lat/lon: 23.5438°/87.3791°
PV system: 1000.0 kWp, crystalline silicon, fixed 2 angles, azim. 180° (south), inclination W 48°, S 17°

9. SolarGIS v1.8 - description of the database
SolarGIS is high-resolution climate database operated by GeoModel Solar s.r.o. with geographical extent covering Europe, Africa and
Asia. Primary data layers include solar radiation, air temperature and terrain (elevation, horizon).
Air temperature at 2 m: developed from CFSR data (© NOAA NCEP); years: 1991 - 2009; recalculated to 15-minute values. The data are spatially enhanced to 1 km resolution to reflect variability induced by high resolution terrain.
Solar radiation: calculated from Meteosat satellite data; years: 1999 - 2011; 30-minute values - global horizontal and direct normal irradiance. This estimation assumes year having 365 days. Occasional deviations in calculations may occur as a result of mathematical rounding and cannot be considered as a defect of algorithms. More information about the applied data and algorithms can be found at: http://solargis.info/doc/pvplanner/. 10. Service provider
GeoModel Solar s.r.o., Milana Marečka 3, 84107 Bratislava, Slovakia; Registration ID: 45 354 766, VAT Number: SK2022962766;
Registration: Business register, District Court Bratislava I, Section Sro, File 62765/B

11. Mode of use
This report shows solar power estimation in the start-up phase of a PV system. The estimates are accurate enough for small and medium-size PV systems. For large projects planning and financing, more information may be needed:
1. Statistical distribution and uncertainty of solar radiation
2. Detailed specification of a PV system
3. Interannual variability and P90 uncertainty of PV production
4. Lifetime energy production considering performance degradation of PV components.
More information about full PV yield assessment can be found at: http://solargis.info/doc/pvreports/.

12. Disclaimer and legal information
Considering the nature of climate fluctuations, interannual and long-term changes, as well as the uncertainty of measurements and calculations, GeoModel Solar s.r.o. cannot take full guarantee of the accuracy of estimates. The maximum possible has been done for the assessment of climate conditions based on the best available data, software and knowledge. GeoModel Solar s.r.o. shall not be liable for any direct, incidental, consequential, indirect or punitive damages arising or alleged to have arisen out of use of the provided report. This report is copyright to © 2012 GeoModel Solar s.r.o., all rights reserved.
SolarGIS® is a trade mark of GeoModel Solar s.r.o.

13. Contact information
This report has been generated by Mr. AMRIT MANDAL, KOLKATA, 700023 WEST BENGAL, India

© 2012 GeoModel Solar s.r.o.

Report number: PV-2037-1209-6

Issued: 23 September 2012 01:12 CET (GMT +0100)

page 4 of 4

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