Detailed Project Report
for
50 kWp GRID INTERACTIVE SOLAR POWER PROJECT
Client
The Golden Park Hotel, Madurai
Prepared by
IN CONFIDENCE
CONFIDENTIALITY STATEMENT
All information contained in this document is provided to the customer in confidence for the sole purpose of adjudication of the document, and shall not be published or disclosed wholly or in part to any other party without SOLSEN Solar equipments PVT. LTD prior permission in writing, and shall be held in safe custody. These obligations shall not apply to information, which is published or becomes known legitimately from some source other than SOLSEN.
SOLSEN, INDIA.
Corporate office: Solsen Solar Equipments PVT LTD
81, PKNA Tower, bye-pass road
Madurai, TN, INDIA
Tel.:+91-452-4500850
Fax.:+91-452-4379234
Email:
Web:
Prepared by:D.Suresh, Solution Designer
Approved by:K.Senthilkumar, Managing Director
1 . EXECUTIVE OVERVIEW
The proposal outlines a high- level technical solution and indicative financial conditions of an grid Interactive solar photovoltaic (PV) plant, which will be built in the Tamil Nadu, India. Total power capacity to be installed is 100kWp. This system estimated average yearly production will be 83 MWh.
We suggest that the system will be based on high quality polycrystalline modules mounted on fixed steel constructions. The proposed solution generates power during daytime only and doesn’t include any power storage. Our scope of solution including design, site preparation, technologies and materials, installation, testing and commissioning.
The project completion will take 9weeks from the contract signature assuming high level of commitment and support from customer side is provided.
2. INTRODUCTION
The purpose of this document is to present a high level proposal for a solar (photovoltaic) power project.
Our proven design and technology components are proposed in the following solution in order to meet customer requirement.
3. ABOUT US
We are a solar project engineering company with solar technology distribution and EPC (engineering, procurement and construction) capabilities including full range of turnkey project services.
Our fresh insights and technical talent of our engineering teams lead to cost effective developments of solar photovoltaic solutions focused on performance/cost, speed of installation and uninterrupted maintenance free operation.
We are privately owned and supported by a major Venture capital company. Our rapid growth both in revenues and profit corresponds to booming trends in the solar industry. Our plans include extending our distribution network to new geographical markets in addition to continuous improvement of our solutions for specific industry segments.
Vision
To be a cutting edge renewable energy solutions provider contributing to sustainable human development efforts across the globe.
Mission
We design solutions that are affordable & cost-effective. Our solutions based on solar (photovoltaic) technologies provide safe, efficient and sustainable source of power for homes, schools, hospitals and vertical industries.
Values
We believe the technology should serve everybody for the common good. Providing better access to information and making daily life easier is our driving force. Our business model relies on helping to create distributed networks of sustainable businesses with overall positive impact on local communities.
3.1 CUSTOMER PORTFOLIO
Our selected customer portfolio includes both major global corporations and local companies in energy, construction, oil & gas as well as government organizations:
DLR (German Aerospace Centre), NLC (Neyveli lignite corporation), Madras cement, CECRI, BEL, GHCL, AAI, SouthernRailway, HPCL, DRDA
3.2 OUR SUPPLIERS
We are using high quality components for all our projects from well-known manufacturers.
4. PROJECT BACKGROUND INFORMATION
The purpose of the project is to install a solar plant producing clean electricity from renewable source for own consume.We strictly use state-of-the-art technologies and processes complying with international industry standards.We understand the project is a pilot installation and the project is to prove maturity and financial viability of grid interactive solar photovoltaic plants for the customer.
5. SOLAR MODELING
5.1 INTRODUCTION
The mathematical model Photovoltaic Geographical Information System (PVGIS) developed by the Research Centre for Renewable Energies of the European Commission has been used for estimation of generated power in the proposal.
5.2 CLIMATIC CONDITIONS IN MADURAI, TAMIL NADU, INDIA
•The average temperature in Tamil Nadu, India is 28.6 °C
•The range of average monthly temperatures is 8.5 °C
•The warmest average max/ high temperature is 38 °C in May.
•The coolest average min/ low temperature is 20 °C in January.
•Tamil Nadu receives on average 1217 mm of precipitation annually or 101 mm each month.
•On balance there are 91 days annually on which greater than 0.1 mm of precipitation (rain, sleet, snow or hail) occurs or 8 days on an average month.
•The month with the driest weather is February when on balance 7 mm of rain, sleet, hail or snow falls across 1 days.
•The month with the wettest weather is November when on balance 309 mm of rain, sleet, hail or snow falls across 11 days.
•Relative humidity for an average year is recorded as 71.1% and on a monthly basis it ranges from 59% in June to 80% in November.
•On balance there are 2716 sunshine hours annually and approximately7.4
•Sunlight hours for each day.
Picture 1: Photovoltaic Solar Electricity Potential in India
5.3 SYSTEM SPECIFICATIONS
For the power estimation at a given location, we assume installation of 200 photovoltaic modules P250W, and ten inverter Gefran- Radius APV50k-T Such configuration will generate power as depicted in the diagram 1 below.
Month / Average kWh/m2 / Power generationMWh
January / 4.890 / 7.57
February / 5.830 / 16.324
March / 6.500 / 20.150
April / 6.500 / 19.500
May / 6.000 / 18.600
June / 5.120 / 15.366
July / 4.630 / 14.353
August / 4.710 / 14.600
September / 4.940 / 14.820
October / 4.370 / 13.547
November / 4.020 / 12.060
December / 4.210 / 13.051
Table 1: Estimation of yearly power production for 50 kWp capacity.
Considering the yearly average irradiation 5.16 kWh/m2 (see Table 1), the proposed PV system with installed power 50kWp will produce 83 MWh per year. The system losses, such as lower efficiency of PV modules in high operating temperature, power self-consumption of inverters, losses on cables, etc., are included in the total power production calculation.
5.4 COMMENTS
The yield estimation assumes cleaning of modules with reasonable frequency.
The yield estimation does not assume dropouts due to accidents, omitted maintenance and vandalism. Module capacity standard degradation in time is taken into account. All system losses (modules, cables, invertors, substations) are taken into account. Inverters have Maximum Power Point Tracking (MPPT) capability in order to optimize power output.
5.5 CONCLUSIONS
The solar modeling indicates high yearly irradiation of 5.16 kWh/m2 in given location, which guarantees very high power production.
The estimated yield is 83 MWh per year from 50kWp of installed capacity in case the proposed good quality crystalline modules are used.
6 .TECHNICAL SOLUTION
6.1 DESIGN PRINCIPLES
We assume that the photovoltaic plant will be installed in Madurai, Tamil Nadu, India. PV plant will be connected to the grid and the customer will net off the produced electrical power.
Photovoltaic power plant main parts are:
-Photovoltaic modules
-Mounting constructions for PV modules
-Inverters converting DC power from solar modules to AC power
-Cables and distribution boards
Photovoltaic power plant parts necessary for safe operation:
-Overvoltage protections, including lighting protection
-Voltage and Frequency protection
-Monitoring system
6.2 TECHNOLOGY COMPONENTS
All technology components are manufactured by leading global manufacturers. The components have been certified by European and other institutions (TUV, IEC, UL, CE, ISO). The choice of the technologies reflects particular customer project conditions (climate, local topological condition, system architecture) and price/quality ratio.
6.3 TECHNICAL SOLUTION
6.3.1 PHOTOVOLTAIC MODULES
PV plant will be constructed from polycrystalline silicon solar modules. The modules generating DC current are connected into strings connected to inverters.
Selected photovoltaic modules / P250 SeriesPower of selected PV modules / 250Wp
Total amount of PV modules / 400 pcs
Total power of PV modules / 100kWp
Max-Power Voltage / 37.10 V
Max-Power Current / 8.2 A
Short-Circuit Current / 8.6 A
Module Efficiency / 15.35%
Dimensions A*B*C / 1650*987*42 mm
Weight / 17.5 kg
PV modules will be connected into strings, which will be connected into
inverter. Strings are serially connected by original module cables terminal
module will be connected to inverter by Laps Solar cable.
6.3.2 INVERTERS
Inverters are to transform DC power from solar modules to 400V AC power. Three-phase with transformer type inverter GEFRAN-RADIUS APV100-T will be installed in the project.
Basic parameters of Gefran - Radius APV50-T
Nominal DC Power / 50kWMaximal DC Power / 55kW
Nominal DC Voltage / 1000 V
Nominal AC Power / 100 kW
Nominal AC Voltage / 400 V
Line Power Factor / 1
Maximal Efficiency / 98.2%
Ambient Temperature Range / -20 to +60°C
Environmental IP Rating / IP 65
Communication / RS485
Dimensions / 10,668*2,900*3,335 mm
6.4 MOUNTING CONSTRUCTIONS
Standard mounting construction made of anodized zinc steel will be used for module installation. Struf profiles will be employed between steel construction and modules themselves. Mounting constructions will be also used for fixing cables.
6.5 DISTRIBUTION BOARDS
Distribution boards are Thermo plastic boxes designed for indoor and outdoor installation with environmental protection of IP65. Classification of distribution boards: DC-distribution board, one for every inverter AC-distribution board, one for every inverter group.
5.1.For the connection use a twin-pair with two symmetrical conductors, spiral wound with a common shield (min. 2 x 2 x 0.22 mm2 or min. 2 x 2 AWG 24).
Proposed colours: A = blue; B = white and blue; EQP (COM) = green + white and green
5.2.The cable should be passed through a metal tube to limit field disturbance.
5.3.Cable shielding must not be grounded; shielding must be continuous along the entire chain (see figure below).
ON
S1 / B / EQPOFF / 1 2 3 / 4
ON
S1 / B / EQPOFF / 1 2 3 / 4
AFE200-PV
(1)
OPT-RS485-ADVON
S1 / A / B / EQP
OFF / 1 / 2 3 / 4
AFE200-PV
(n)
JBX-COM-CPT-16 (1) / JBX-COM-CPT-16 (n)
OPT-RS485-ADV / ON / ON / ON / ON
S1 / S1 / S1 / S1
ON
OFF / OFF / OFF / OFF
S1 / A / B / EQP / Y1 Connector / Y1 Connector
OFF / 1 / 2 3 / 4
A1 / B1 EQP1 EQP1SH1 SH2 EQP2 EQP2 A2 B2 / A1 B1 EQP1 EQP1SH1 SH2 EQP2 EQP2 A2 B2
A
B
GND
SH
4 3 2 1M1J2
RADIUS LOG-INT
M3
A / 4B / 3
GND / 2
SH / 1 / J1
M2
Sensors:
Temperature
Irradiance
- + - + - + - +
AI4 AI3 AI2 AI1
Log -PRO-PLUS
Exit / Enter110Vac / + / - / RS232 / + / -
N L 230Vac / Phone 24V Ethernet RS485 / RS422 / D01
230Vac
•Connection between the RS232 or USB port of the PC and connector J2 of the Radius Log-Int board, using
a9-pin SUB-D receptacle connector. Neither the cable nor the relative RS232/USB adapter are provided. This connection is only necessary during string box configuration (see par. 8.2).
•Connection of terminals 3 and 4 of terminal board M3 on the Radius Log-Int board to the cabinet ground connection.
6.6 CABLES
Specific cables compliant with local standards will be used. Lapps solar DC cable are to collect the power from PV modules.
6.7CABLE LINES
PV modules will be connected into strings by module cables and connectors, which will be tied to constructions directly.
Lapps Solar cables leading to DC distribution boards will be fixed to cable bridges located below modules.
JBX COM-CPT-16 Block diagram
String 1 / String 2 / String 16+ - / + - / + -
8 / 10A / 8 / 10A / 8 / 10A
1000Vdc / 1000Vdc / 1000Vdc
INPUT PROTECTION
ONLY POSITIVE SIDE
16A 16 FUSES
1000Vdc / Power INPUT
+/- 24dc
MEASURE / CONTROL AND MANAGEMENT
Measure currents
of strings
State
discharger
T° amb,radiance, / Comunication
Anemometer
MODBUS
OUTPUT PROTECTION
Θ
OVERTEMPERATURE
ALARM
160A
1000Vdc
+ -
160A
1000Vdc
PV inverter
Schema a blocchi JBX COM-CPT-16-BC
String 1 / String 2 / String 16+ - / + - / + -
8 / 10A / 8 / 10A / 8 / 10A
1000Vdc / 1000Vdc / 1000Vdc
INPUT PROTECTION
ONLY POSITIVE SIDE
16A 16 FUSES
1000Vdc / Power INPUT
+/- 24dc
MEASURE / CONTROL AND MANAGEMENT
Measure currents
of strings
State
discharger
T° amb,radiance, / Comunication
Anemometer
MODBUS
OUTPUT PROTECTION
Power INPUT for Y< / Θ
1 / N ~ 230 V 50 Hz
Y< / 160A
1000Vdc
+ -
160A
1000Vdc
PV inverter
6.8SECURITY AND SAFETY
The solar plant will not do any harm to the external environment. Eligible personnelwill be granted access to the site only.
6.9MONITORING SYSTEM
Power generation will be monitored by a central system, which will provide all operation information (past and current power generation data, future generation forecasts, analytical reports down to string level, user defined graphs, etc.)
6.1 WEATHER CONDITIONS
The solar plant is designed and components are certified for tough climate conditions. See datasheets and certificates for details. Cleaning is recommended based on particular local conditions. However cleaning frequency may be minimized with optional module surface treatment.
IRR / Radiation sensor.TEMP / Temperature sensors (amb. temp and cell temp.).
WIND / Wind speed sensor.
7 . TURNKEY PROJECT SERVICES
Following services are provided as part of a turnkey delivery:
•Project preparation services
•Detailed Solution Design Services
•Financial Modeling and a Business Case for a bank (if required)
•Documentation for the building permission
•Selected material and components contracting and procurement
•Selected material and components manufacturing
•Logistics and Workforce Sourcing
•Construction and Installation
•Testing and commissioning
•Spare parts management
•Maintenance, operation support and yield optimization
•Project management
8. TIMELINES
Estimated completion time is 5 Weeks from the contract signature. The duration may vary depending on local permitting procedures.
Timelines herewith presented are indicative and reflect the knowledge from similar projects. They will be made more precise and potentially shorter after site visit and scope confirmation.
1 2 3 4 5 6 7 8 9
Project Design
Procurement & Site Preparation
Construction & Installation
Testing & Commissioning
Table 2: Timelines
9. WARRANTIES
The warranty period for the complete system is 1 (one) year. Different period may be negotiated if the customer wishes. The warranty periods for particular technology components are as follows:
Component / Warranty durationPV modules / 25 years
Inverters / 5 years
All warranty issues will be handled by SOLSEN India. Warranty claims for equipment not manufactured by SOLSEN may be placed with manufacturers directly at customer discretion.
10. FINAL COMMENTS
We strongly recommend you to check the current legal framework for solar power exploitation in our state thoroughly, including the prospective changes.
Solar power business has been undergoing massive growth since several years. Due to massive development in many countries the industry is prone to temporary equipment and resource shortages. Proper lead times need to be taken into account when planning a solar project.
Our experience so far has shown that a critical success factor for a smoothly running solar project is a project sponsor dedicated by the solar investor including well defined responsibilities who will work with our project manager as his counterpart on a daily basis.
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