PROPOSAL FOR SOLAR SYSTEM

AT PIPS PROJECT

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INTRODUCTIONThis document provides a complete detail of country’s power consumption, estimated current power requirement, expected future consumption and availability from different resources, solar power generation and solar power usage in street lights.

UNICORN is pleased to provide comprehensive solution for solar street lights, here is some details for procedures, equipments and standards will be used in proposed Project for Solar Street Light. All installations and components comply with the international electrical standards and regulations implemented in region.

COMPANY’S INTRODUCTIONWith Unicorn International establishment, its objective was to provide engineering and Technical solutions to the clients to be competitive in their respective industry as well as inthe international market. Unicorn International specializes in the design and development of IT solutions, engineering applications, Material management, training of end users and technical support. We are committed to provide all the deliverables within its deadline and more importantly according to the clients’ requirement.

In a short span of time, Unicorn International is geared to develop a strong client base oflocal as well as International market. Keeping in view the local and international marketneeds, we are focusing to provide state –of –art applications to our valuable clients. The key objectives of Unicorn International are: -   

% •To develop strategies for clients for introduction of efficient and effective information technologies. •To devise ways and means and to provide consultancy services for simplification and automation of all procedures of client organizations.

% •To work with our clients to recommend ways and means to improve systems, with a view to simplify %     procedures, remove anomalies for the introduction of comprehensive computerization and developing %     databases. % •To support client organizations in planning, construction, operation and maintenance of their existing %     installations and new projects. % •To provide and make arrangements for imparting training related to their specified trade and technology, %     operational techniques and maintenance of plant and equipments.

COUNTRY’S PROFILE

Pakistan is a land of nearly 155 million people living in an area of 800,000 sq. km. The landscape varies from lofty Karakoram and Himalaya mountains, with the K-2 peak (second highest in the world: 8,613 meters) to the famous desert of Thar and includes fertile plains of the river Indus and its tributaries. Pakistan is known as a land of natural beauty, grandeur and is the home of a culture as ancient, complex and striking as any in the world. It also is the birth place of Indus valley civilization. Pakistan has dominantly agricultural economy and is striving to develop and expand industrial base.

CONVENTIONAL ENERGY PROFILE

Pakistan, despite enormous potential of energy resources remains energy deficient and has to rely heavily on imports to meet its requirements. Pakistan obtains its energy needs from variety of traditional and commercial sources. Oil supply from indigenous resources has been the weakest link in the energy supply system of Pakistan. Until early 1980 crude oil production was nominal 13000 barrels per day (BPD), which rose to 64,350 BPD in 1991-92. Production is declining and current production is 59000 BPD, with this rate the remaining oil reserves 253 million barrels will be depleted in about 12 years. Consequently, it appears that Pakistan would continue to remain a net importer of crude oil and refined oil products unless a major discovery of oil is made.

RENEWABLE ENERGY SOURCES

The role of renewable energy resources such as solar, wind or biomass has been negligible in the total energy picture of Pakistan. The experiments in the past in this area were not so successful due to variety of reasons including lack of understanding and handling of these technologies. The units installed at initial stage have not increased much as envisioned.

RENEWABLE ENERGY SOURCES

It has now become clear that in near future the environmental friendly Renewable Energy Sources are to be developed and popularized for the sustainable development. Other incentives for promotion of such energy technologies, particularly in the developing world, are clean environment, energy independence, new employment opportunities, improvement of living conditions in rural areas, and reduction in mass migration from rural to urban. Today the primary energy supplies are not enough to meet even the present demand. So, Pakistan, like other developing countries of the region, is facing the serious challenge of energy deficit.   

Solar energy is most abundant, widely spread and very clean source of energy. It has wide range of applications. It can be used to warm and cool the buildings, heat the water for industrial and domestic applications, distill the water for health purposes, dry the agriculture products, and can easily be converted in to other forms of energy such as electricity. Most of the solar energy technologies are becoming economically competible.

PHOTOVOLTAIC.

The best way to utilize the solar energy is no doubt through photovoltaic’s which converts the sun energy directly into electricity – the most demanding type of energy. During last fifteen years Pakistan has shown quite encouraging developments in this field. National Institute of Silicon Technology (NIST) under the Ministry of Science and Technology has already developed the know-how and technology to fabricate the solar cells, modules, and systems. Photovoltaic is particularly suitable for small power requirements and remote area applications. Pakistan took a lead in the region, in using photovoltaic. In early 1970’s a total of eighteen P.V. stations in different parts of the country were-4-set up for village electrification. The total installed capacity of these was nearly 440 KW. Because lack of technical know-how and no follow up, these systems have not given the required benefits. Now NIST has developed the know-how and technologies and basic infrastructure in the field. Currently technology is being used, in Pakistan, for standalone rural telephone exchanges, repeater stations, highway emergency telephones, Cathodic protection, refrigeration system for vaccine and medicines in the hospitals etc. Public Health Department has installed about 20 units of Solar Water Pumps for drinking purposes in different parts of Baluchistan. Both the private and public sectors are playing their roles in the popularization and up gradation of photovoltaic activities in the country. A number of companies are not only involved in trading photovoltaic products and appliances but also manufacturing different components of PV systems. They are selling P.V. modules, batteries, regulators, invertors, small power practical gadgets for load shedding such a Photovoltaic lamps, battery chargers, garden light etc.

Energy technologists are now convinced that the development and adaptation of solar energy technologies can bring a revolution in the life style and living standards of low-income people in extreme remote areas.

For solar energy technologies, quite an infrastructure and know how, at the R&D and limited production levels, already exists in this country. However, for its promotion, there is a need to take certain drastic measures for providing incentives and funds for its practical demonstration; convincing the people for their utilities; educating the masses and developing the pilot scale activities. These measures are must to give footings to industrial and commercial ventures in these technologies of 21st century.

   

RECOMMENDATIONSThese measures are must to give footings to industrial and commercial ventures in these technologies of 21st century. Some of the highly recommended incentives are as follows:

% • Formulation of long term strategies to include, progressively, the renewable/solar %                 energy technologies in the national energy policy % • Provision of adequate funds for R&D and transferring the laboratory products into %                 commercial products; % • Motivation of entrepreneurs through policy initiatives such as tax holidays, %                 reduction/exemption from duties and taxes % • Provision of soft loans/subsidies to the end users % • Motivation through mass media, exhibition, field demonstration, education and %                 training. % • Encouraging installation of solar lights and other appliances on public buildings, %                 parks, streets etc % • Providing funds for renewable energy demonstration community projects.

TECHNICAL PROPOSAL FOR PIPSThe scope of this document is to provide the functional and technical requirements for solar power system to PIPS Project. Solar power supply system of 48V DC nominal voltage with low maintenance lead acid or maintanance free dry battery banks, solar cells, charge control unit, power cables, and other necessary accessories and installations material shall be supplied for the power generation through solar light for energy efficiency measures. All the supply items shall be according to the technical specification mentioned in the later section of this document.

1.2.1 The quantity and capacity of solar modules, solar batteries and charge control units are asmentioned in the later section of this documents.

1.2.2 All the equipment /battery sets supplied against this tender shall operate efficiently undernormal use during warranty period of one year from delivery date. The equipment /battery setor any part thereof shall be replaced by the supplier free of cost, if found defective duringwarranty period.

1.2.3 A training of 10 persons for 3 days shall be arranged at supplier premises by the successfulbidder for installation and maintenance of the power plant delivered under the contract.

1.2.4 The supplier shall arrange installation of one set of solar power plant and demonstrate / confirm successful operation of the power plant according to the specifications. All test meters required for the purpose shall be arranged by the supplier.

2 ENVIRONMENTAL CONDITIONS

Continuous Performance:The batteries shall work continuously in the following environmental conditions.

Ambient Temperature 0°C to 55°CRelative Humidity: Up to 100%.

2.1.2 Temperature range is to be mentioned by the bidder for working of the batteries in accordance with the specifications.

2.2 Optimum Environmental Conditions:

2.2.1 The bidder shall state environmental conditions, which apply to reliable functioning of the batteries.2.2.2 During shipment and storage prior to installation, the batteries might be placed in premises without any air conditioning and exposed to the following climatic conditions: -

i. Ambient Temperature: -15°C to 55ºCii. Relative Humidity: Up to 100%.

Hence the batteries shall withstand above-mentioned environmental conditions during shipment and storage.

3 SOLAR MODULES:

3.1 The solar panels shall be of high efficiency monocrystaline cells with anti reflective coating. The module efficiency shall not be less than 15%. The modules shall be weather proof and its front shall be of high strength tempered glass.Module design conforms to IEC Tests or US Coast Guard Tests.Solar modules shall provide with lightweight aluminum and pre-drilled mounting holes frames.

3.2 The solar modules shall meet the requirements of EEC council directive 89/336/EEC; Tenderer shall be required to submit a certificate to this effect.Peak power rating of the module shall be indicated.Specifications shall be printed on back of each module. Serial number and fabrication date shall be permanently and legibly marked on each module.

3.3 The efficient operation period of module shall be twenty (20) years. The drop in output power of the module shall not be more than 1% per year. The module shall be replaced without additional cost, if drop in output power at the end of warranty period is observed more than 1% per year.

3.4 The solar modules shall be of 12V nominal operating voltage. All solar cells shall match electrically to assure the greatest power output. The solar modules shall be of minimum 80 watts (peak power) having dimensions to be specified by the vendor.

3.5 The solar module shall be equipped with devices like diodes for protection against reverse flow of current into the solar module. Wind loading shall be 170 Km/hour. Solar modules shall be with durable back sheet for the protection from scratching, cuts, breakage, and other environmental conditions.

3.6 Solar modules shall be wired together in series and parallel to obtain required power levels.The solar modules shall be delivered complete with all accessories / cable / glands required for installation at site. One weatherproof junction box with minimum 10 pairs of terminals alongwithrequired glands shall be delivered for each charge control unit. Environmental conditions for solar modules shall be as follows:

Ambient temperature:: -20°C to 75°CRelative humidity:: Upto 100%

4. SOLAR MODULES MOUNTING STRUCTURE

Solar mounting structure stand shall be adjustable to obtain best tilt angles for its installation.

4.1 Galvanized steel and pre -drilled mounting holes structure frames shall provide for easyinstallation of solar modules

4.2 Mounting holes shall be center to center for proper fixing of solar modules.

4.2 Mounting structure shall resist corrosive forces namely wind, snow, ice, sand and solarradiation

.

5. UNIVERSAL CHARGE CONTROL UNIT

An industrial class universal charge controller of 48 Volts for automatically managing the battery charging shall be provided. The control unit shall be solid-state electromechanical device to control the charging ofbatteries from solar modules and to protect the batteries from excessive charge and discharge.The charge controller shall have the following features:

i) Boost, Equalize and Float charging of batteries shall be programmed

ii) Temperature compensated regulation voltages. Adjustable setting of voltage and current. Comprehensive metering.

iii) Built in Alphanumeric LCD display on front, Built-in test programs for low maintenance batteries for auto calibration, testing,measuring and calculating parameters, separate program for low maintenancebatteries and maintenance free batteries should be selectable.

iv) Data logging facility for last 30 days and data should not lose if power disconnect

v) Lightening protection.External temperature sensor shall be attached, Overload protection.

vi) Reverse battery polarity protection.Low battery voltage protection.Adjustable low and high voltage disconnection.

.The controller shall confirm the requirements of EEC Council Directive 89/338/EEC or equivalent specifications, and fabrication date shall be clearly mentioned on the device.

5.1 The solar power system shall also be provided with change over switch for connection to a

second DC power supply source through (N + 1) rectifiers when commercial power becomesavailable in future.Charge control unit shall have built up jack for external source charging when

6. DOCUMENTATION

The bidder shall provide documentation in English to support operation and maintenance.

6.1 Required Documentation:

6.1.1 Operation and Maintenance documentation for solar power system.

6.1.2 Installation documentation

6.1.3 Guidelines chart for periodical maintenance instructions to be displayed in the battery /charge control unit room.

7. ESTIMATED COST ON 45 KW Basis1 45KWatt Solar panel Polycrystaline Q-cells

Germany each250W,24VDC .

180 95000

17,100,000

2 MPPT Charger Controller.

1

1,400,000

3 Foundation masonary civil work    with materials for solar panel frame

1

250,000

4 Solar panels assembling/installation/ testing/cabling/ DC & AC wiring    charges.

1 Rs35000/kw

1,575,000

5 Deep Cycle OPZ maintenance free batteries 2V,800Ah.

190 Rs65000 each

12,350,000

6 Inverter APC USA or equivalent 380-400VAC,50Hz,60KVA.

1 Rs 900000 each

900,000

7 Solar DC cable 2- core 30mm flexible imported for solar panles power up to junction box 500 feet. Rs120/feet

60,000

8Fixing hardware. 114000

9 Transport cost in radious of Therparkar distric. 15000

10Solar frame work for solar panels fixing tilting type. 45KW Rs 70000/KW

3,150,000

11 Battery bank DC cabling.190

batterirs Rs 500 each 95,000

Total cost in Pak rupees. 37,009,000

DRAWINGS / CATALOGUES