gl - 24nov2011 - png air services - hybrid power supply system for mt. konokalang radio repeater...
TRANSCRIPT
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Propo
sed to
PNGAir
Servic
es
Limited
GREEN
Limited
Sola
r &Win
d
Hybr
id
Pow
er
Syst
em
F
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F
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Table of Contents
Page #
1. Introduction
3
2. GREEN Limited - Company Profile
5
3. Client Requirement
6
4. The Technical Proposal
7
5. The Commercial Proposal
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1. INTRODUCTION
Energy plays a vital role in each and every aspect of our life. It is not only the
most essential part of our very existence but also part of the entire nature.
The electricity that we consume on a daily basis all comes from the energy
generated from natural resources. Energy can be categorized of 2 types
renewable and non-renewable. Renewable source of energy is something that
exists for ever. It is the natural source that gives out energy all the time
whether or not, one uses it. Sun, wind, water are examples of renewablesources. Out of these the energy from sun is considered to be the most
powerful and constructing solar panels for telecom towers and operating other
equipment will help in tapping this energy to maximum possible extent.
Although energies from these resources are being tapped and used
successfully for various purposes, there is still an ample amount of scope that
is untapped, and there is huge potential of using these resources for various
industrial or domestic purposes. The best part is that tapping this energy isproves to be most cost-effective and very environmental friendly.
Energy generated from wind and water has been used successfully for
generating electricity, running windmills and for various other industrial
purposes. Solar energy is already quite popular and is widely used across
various countries in the world for heating, electricity and generating power
through solar panels for telecom tower. However there is lot of scope for using
th l f th t f l f bl
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to forget about the additional costs that are incurred for maintaining this high-
end backup systems and network costs all thanks to poor transportation
facilities, problems in spare part supplies, and shortage of skilled labour.
Another important factor that led to the thought of using the power of solar
panel for telecom towers is the use of expensive diesel for running these
towers. The consumption of diesel has been increased, that are needed for
running engines and transmission equipment. This is again due to lack of
reliable power in rural areas. All these factors contribute to additional costs.
Increasing diesel costs are again a concern. Manufacturing, installation,
running and even maintenance of telecom towers therefore prove very
expensive considering all the above points. Major telecom business operatorswho invest millions of Kinas for operating the telecom towers to offer better
services to their clients, all thanks to the increasing competition, are looking
for cost-effective ways to run their business. What more can be more cost-
effective than the use of the powerful solar panel for telecom towers.
Power supply from solar panels for telecom/radio towers can be well
harnessed which will enable their effective operation and also addresses theconcerns mentioned above. Harnessing power from solar energy not only is
clean and effective but also ensures low maintenance and operational costs
that are need to maintain and run solar equipment as compared to its diesel
counterparts. Solar panels for telecom towers are also environmental friendly
as there are no carbon emissions thus reducing the global warming threat.
Solar panels are one of the best sources for operating telecommunication
towers especially in rural and suburb areas where there is unreliable power
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2. GREEN LIMITED - AN INTRODUCTION:
GREEN Limited has been providing various solar and renewable energy
solutions in Papua New Guinea and India. Primarily, GREEN solutions are
targeted for rural electrification and specific industrial solutions for industry
verticals such as telecom, health, education, marine, aviation, and aviation.
GREEN Ltd. , was established in 2007 and is one of the leaders in the
photovoltaic and renewable energy solutions. GREEN design and provide Solar
Photovoltaic and Wind systems from India , China and Germany.
Main Focus:
Supply of Solar Photovoltaic modules, BIPV modules, Solar Cell Systems (Turn
Key Solutions) design/development, consultancy, project management,
electronic appliances and hardware, MagLev wind turbines and horizontal
windmills.
GREEN offers within the fields of: Design and planning - solar/windgenerators. - PV modules - Electronics
low energy consumption equipment.
Photovoltaic modules in all shapes and colors - BIPV, Hybrid modules
Lighting systems with very low energy consumption
Water pumping from for deep wells and long pipelines.
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These systems are configured for remote unattended operation with
highly reliable power supply.
3. PNG AIR SERVICE REQUIREMENT
Radio repeater site located at Mount Konokalang, on Hans Meyer Range, in
New Ireland Province, is a strategically important for PNG Air Services as it
caters for the radio/ ADS-B tower.
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4. THE PROPOSAL
GREEN Limited proposes a solution that is on purely on renewable
energy that sustains with solar and wind that is available in Mount
Konokalang and power the radio/ADS-B tower.
For load 585W.
System operating only daytime 24h/day,
BTS located in Mount Konokalang,
PapuaNewGuinea average sunshine hours 5.5 hrs/day.
Power storage to be 3 days backup,
Average charging battery full need 3 days,
Battery depth of discharge 75%.
4.1. Base Station Status
DC Communication Equipment load: 585W
Voltage of system: 24V
Load current: 585W/24=24.4A
Load working hours: 24 hours
B tt ti 72h (3D ) B tt
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4.2.1Design Methodology
We propose that the solar system take advantage of the solar energy,
When there is not enough sunshine, the fully charged battery shall
supply the electricity needed with the backup wind generator to
provide the auxiliary power generation, that sustains non-stop supply to
the radio transmission load and charging the power storage in thebatteries.
The Hybrid Controlling System would be as follows
1. Solar Wind Powered Generator
2. Charge Controller
3. Distribution Unit
4. Battery Bank
GREEN Solar-wind hybrid controlling system
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4.2.2. Solar Photovoltaic
The efficiency of a solar cell may be broken down into reflectance
efficiency, thermodynamic efficiency, charge carrier separation
efficiency and conductive efficiency. The overall efficiency is the
product of each of these individual efficiencies.
The output of a solar array depends on the type of panels used, the amount of
sunshine, temperature, orientation and atmospheric conditions. As a guide, a
1kW [1000W] solar array installed in an unobstructed sunny position in Papua
New Guinea will produce an average daily output as follows:
Poly Crystalline solar array 4.0kWh/day
Mono Crystalline solar array 4.2kWh/day
Amorphous solar array 4.9kWh/day
Due to the direct applicability and lower TCO (Total Cost of Ownership)
and high efficiency mono-crystalline solar PV is proposed as a primary
part of power supply for Mt. Konokalang radio repeater site.
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Calculation of Solar Panels Capacity
The electricity generated by the solar energy must be no less than the
load power consumption so as to avoid frequent initiation of the battery.
Therefore the solar power configuration must be based on the system
load in the day. The sunshine irradiation is weak in the morning and at
night, while strong at noon. Usually the light intensity of 8a.m. and
16p.m. is half of that of the noon. In order to let the solar energy to
power the full electricity needed in the best sunshine days, fairly good
sunshine days, cloudy days and even longer time, the configuration of
the solar panels must be N times of the load.
Solar PV Power S=JUIT+24NI/NH
SSolar PV power (WP)
JDust sheltering coefficient 1
USystem output voltage: 24V
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4.2.3. The MagLev Wind Power Generator
The system is proposed with TIMAR MagLev wind turbine generator. The
combined Darrieus-Savonius hybrid wind turbine, under the light theory
of magnetic levitation technology, fan motor will be rotated by wind
power without any mechanical friction in the motor case. Because no
lubricant ,no gear , once wind of Grade 1 comes, high-performance
power generation, smooth operation.
The 'MagLev generator' is said to be
the permanent magnetic levitationwind power generator. Magnetic
levitation is an important new
development to reduce stress from
the mechanical load on the wind
t bi
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Compared with the traditional wind solar hybrid system, TIMAR wind
solar hybrid system fully makes use of the energy of low wind speed.
The generating efficiency has been improved at least 35%. Meanwhile,
it is not influenced by the wind direction and has effectively overcome
the influence of turbulence. Its requiring installation height is obviously
lower, resulting with widely application scope and increasing application
value.
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Technical Descriptions and Rating of MegLev Wind Turbine
Generator
Rated Power: 1000W
Wind wheel diameter: 2.4M/2.5M
Weight: 150KG
Blade Material: Aluminum Alloy
The number of blade: 3
Minimum wind speed start: 1m/sMinimum power wind speed: 2m/s
Minimum charge wind speed: 3m/s
Rated wind speed: 13m/s
Maximum cut off wind speed: 15m/s
Resistant to wind speed limit:60m/s
The type of Generator: Three-Phase AC Maglev Wind
Turbine
Controller Output Voltage: 24V
Controller Output Current:
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4.2.4. Calculation of Battery Capacity of the proposed system
The formula of battery bank capacity: C=KIT/[1-0.006(25-t)]
K: capacity coefficient: 1;
I: working current of the loads: 24.4A
T: battery bank successive powering time: 72 hours;
: depth of discharge (DOD): 75%;
t: battery working temp. 25 as standard.
The total equivalent load is 585W. Based on the system working voltage
of 24V, the equivalent current is 585W/24V=24.4A. With all thefigures that arrive:
C=2343Ah, with 1 groups of 2500Ah batteryTotal 2500Ah battery
bank.
I d ith th PV i t ll ti diti d th th
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4.2.5. Solar Wind MPPT Controller
The control system can accommodate the central module, solar control
module, wind control module, AC module, DG (Diesel Generator)
module and inverter module. The control system can accommodate the
central module,N+1 capacity expansion mode allows hybrid power
systems with different energy compositions.
The Advantage of MPPT
The Efficiency of MPPT Control System
Increases PV array output by up to 30%.
Improving the integral work efficiency to 95%;
The solar system with MPPT could save 10% solar panel,
comparing with non-MPPT one.
MPPT has high efficiency of fast charging under sunshine,
especially when the storage battery is power-lack.
Precise management of batteries. Realizing the temperature
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5. COMMERCIAL PROPOSAL
5.1. Costing
No
.Description Type Unit
Qty
.
Rating
&
Remark
Price
(PGK)
Components and Equipments1 Solar PV Panel S- 250 WP 18 4500WP
2 Solar control moduleXSTD24V
100AUnit 2 200A
3MegLev Wind
Turbine Generator
TIMAR
MegLev
1KW
No. 1 1KW
4 Wind Control module 24V/60A Unit 1 60A
5Central MPPT
Controlling ModuleXTD24CB
Unit1
6 Battery Bank24V2500
Ah
Group 1 2500AH
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5.2. Terms and Conditions
Administrative and Management:
A1. GREEN Limited would provide the entire power system supply,
installation and commissioning along with accessories.
A2. GREEN Limited technical team would operate under the deputed
Project Manager to handle the installation upon approval by PNG AirServices.
A3. PNG Air Services is required to appoint the project co-coordinator
to liaise, on behalf, to provide the necessary information
and technical details.
Technical and Training:
B1. The project charter as per the scope would be raised by GREEN
Limited and submitted for PNG Air Services.
B2. GREEN Limited technical team would ensure the required output
h i i i d PNG Ai S i ld k h
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6. CONCLUSION
The project would be first of it is kind in Papua New Guinea with most
modern renewable energy hybrid system. Having proven the quality of
service in many countries the system can provide the required service
level to PNG Air Services. A similar The recent installation, with solar
and TIMAR maglev wind turbine, in Indonesia of similar requirement
proving to be the best of solution breed for a most critical requirement
of aviation navigation equipment power supply and sustaining support.
With the guarantee, the proposed system would prove and provide the
bench mark for the telecommunication / radio repeater equipments'
power supply with ease of use and peace of mind.
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Solar-Wind Hybrid Power System For Radio Site - A GREEN Limited Proposal to PNG Air Services
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Solar-Wind Hybrid Power System For Radio Site - A GREEN Limited Proposal to PNG Air Services
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Solar-Wind Hybrid Power System For Radio Site - A GREEN Limited Proposal to PNG Air Services
MT KONOKALANG RADIO
REPEATER SITE SOLAR-WIND
HYBRID POWER SYSTEM
PNG AIR SERVICES Ltd.PO Box 684, Boroko, NCD
GREEN LimitedPO Box 1243, Port Moresby, NCD