GL - 24Nov2011 - PNG Air Services - Hybrid Power Supply System for Mt. Konokalang Radio Repeater Site-NP

8/3/2019 GL - 24Nov2011 - PNG Air Services - Hybrid Power Supply System for Mt. Konokalang Radio Repeater Site-NP

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Propo

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PNGAir

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Limited

GREEN

Limited

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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

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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

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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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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

GL - 24Nov2011 - PNG Air Services - Hybrid Power Supply System for Mt. Konokalang Radio Repeater Site-NP

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