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TITLE PAGE
DESIGN AND CONSTRUCTION OF AN AUTOMATIC TRANSFER SWITCH USING ARDUINO
BY
---
EE/H2013/01430
DEPARTMENT OF ----
SCHOOL OF ---
INSTITUTE OF ---
DECEMBER,2018
APPROVAL PAGE
This is to certify that the research work, "design and construction of an automatic transfer switch using arduino" by ---, Reg. No. EE/H2007/01430 submitted in partial fulfillment of the requirement award of a Higher National Diploma on --- has been approved.
By
--- . ---
Supervisor Head of Department.
Signature………………. Signature……………….
……………………………….
---
External Invigilator
DEDICATION
This project is dedicated to Almighty God for his protection, kindness, strength over my life throughout the period and also to my --- for his financial support and moral care towards me.Also to my mentor --- for her academic advice she often gives to me. May Almighty God shield them from the peril of this world and bless their entire endeavour Amen.
ACKNOWLEDGEMENT
The successful completion of this project work could not have been a reality without the encouragement of my --- and other people. My immensely appreciation goes to my humble and able supervisor mr. --- for his kindness in supervising this project.
My warmest gratitude goes to my parents for their moral, spiritual and financial support throughout my study in this institution.
My appreciation goes to some of my lecturers among whom are Mr. ---, and Dr. ---. I also recognize the support of some of the staff of --- among whom are: The General Manager, Deputy General manager, the internal Auditor Mr. --- and the ---. Finally, my appreciation goes to my elder sister ---, my lovely friends mercy ---, ---, --- and many others who were quite helpful.
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The need to protect electrical appliances from electrical power fluctuation cannot be over emphasized. Most homes and office complexes where single-phase supply is needed are supplied with two or three phases of power supply to allow change from one phase to another when there is fluctuation or complete outage of power supply on a particular phase. This action is done manually and results in electric shock and damages. The automatic phase selector system automatically select and switch from one phase to the other in a RED-YELLOW-BLUE sequence and operates within a voltage range of 160V - 220V. When voltage supply on a phase is below 160V or above 220V, this system automatically disconnects the load from the phase and connects to another where the required condition is met. The system was developed using Atmega328P microcontroller, ULN2003AN transistor switch, relays, 78XX series regulators, liquid crystal display and an audio alarm unit that produces a beep sound whenever there is a change from one phase to another. The load is connected on this phase and remains on it when the condition of operation is met. This sequence provides protection and guarantees continuous power supply for single-phase appliances and the designed system performed satisfactorily.
TABLE OF CONTENTS
COVER PAGE
TITLE PAGE
APPROVAL PAGE
DEDICATION
ACKNOWELDGEMENT
ABSTRACT
CHAPTER ONE
INTRODUCTION
1.1 BACKGROUND OF THE PROJECT
- PROBLEM STATEMENT
- AIM/OBJECTIVE OF THE PROJECT
- PURPOSE OF THE PROJECT
- SIGNIFICANCE OF THE PROJECT
- APPLICATION OF THE PROJECT
- SCOPE OF THE PROJECT
- PROBLEM OF THE PROJECT
- LIMITATION OF THE PROJECT
- DEFINITION OF TERMS
- METGODOLOGY
- PROJECT ORGANISATION
CHAPTER TWO
LITERATURE REVIEW
- OVERVIEW OF THE STUDY
- OPERATIONAL REVIEW OF A TRANSFER SWITCH
- TYPES OF TRANSFER SWITCH
- MANUAL TRANSFER SWITCH OR CHANGEOVER SWITCH
- BENEFITS OF AUTOMATIC TRANSFER SWITCH OVER A MANUAL TRANSFER SWITCH
- PROTECTING THE POWER SYSTEM FROM FAILURE
- RESTORING POWER AFTER A WIDE-AREA OUTAGE
- REVIEW OF RELATED WORKS
- ARDUINO (ATMEGA328)
- LCD DISPLAY
CHAPTER THREE
- MATERIALS AND METHOD
- SYSTEM DESIGN AND ANALYSIS
- SYSTEM OPERATION
CHAPTER FOUR
- SYSTEM DEVELOPMENT
- TEST
- EVALUATION
- INSTALLATION OF THE COMPLET DESIGN
CHAPTER FIVE
- CONCLUSION
- RECOMMENDATION
REFERENCES
CHAPTER ONE
INTRODUCTION
1.1 BACKGROUND OF THE PROJECT
In developing countries like Nigeria, power instability and phase failure has posed a serious threat to our economic development. One of the factors that boost the economy of a country is its ability to supply a steady and stable power supply. However, issues such as phase failure, phase imbalance or earth fault are main causes that lead to unstable and erratic power supplies [A.F. Agbetuyi, 2011]. In some cases, the power lines are over loaded leading to power trip-off by the circuit breakers or by the load shading process undertaken by distribution authority. Most homes and office complexes where single phase supply is needed are supplied with two or three phases power supply to allow change from one phase to another when there is fluctuation or complete outage of power supply on a particular phase. This action is aimed at making sure that power is always available for use by the appliances, but it is accompanied with its hazard because it is manually controlled; Hence, the need for an automatic control (switching) system. The automatic switching systems can help to eliminate the manual control technique mostly used in developing countries [E.J Oduobuk, 2014]. Several works have been done in this regard, some of which interfaced three-phase supply to generators using various approaches with remarkable success over the years [E.J Oduobuk, 2014].
1.2 PROBLEM STATEMENT
Power failure, under and over voltage in a country, state or city is highly detrimental to development in public and private industries. The insecurity associated with these problems bring about limitation to power consistent investments, thus hampering the development of industries and multinational ventures. Processes like carrying out surgical operations in hospitals, laboratories which require constant power supply for research, money transactions between banks and more require constant use of uninterrupted power. In other to solve this problem, an automatic transfer switch was invented. This research covers the design and construction of a three phase automatic transfer switch using arduino.
1.3 AIM OF THE PROJECT
The main aim of this work is to build a three phases device that allows change from one phase to another when there is fluctuation or complete outage of power supply on a particular phase. This device will overcome power fluctuation phase interruption by selecting next most healthy available phase to feed the equipment using arduino as the heart of the project.
1.3 OBJECTIVE OF THE PROJECT
The objective of this work is to design a
PURPOSE OF THE PROJECT
The main purpose of this work is to ensure uninterruptible and healthy power supply.
1.4 SIGNIFICANCE OF THE PROJECT
Industries require three phases power to run their machinery. Some of them require continuous \ uninterrupted power to maintain their data
An automatic transfer switch introduces an automatic solution to overcome power fluctuation \ phase interruption by selecting next most healthy available phase to feed the equipment [ Fowler, Nick 2011].
It has the capacity to automatically switch power from national grid to generator and vice versa, once there is power failure in any of the two power supplies and at the same time has the capacity of shutting down a generator set once the mains grid is been restored according to Theo. Audel and Co, 1998.
1.6 SCOPE OF THE PROJECT
This work covers only a three phase automatic transfer switch which can only be used for providing a means of switching from one phase of AC mains to another in the case of failure, under-voltage or over-voltage in the existing phase.
1.7 APPLICATION OF THE PROJECT
This device is used in the following places [Theo. Audel and Co, 1998]
- home,
- office,
- worship places
- workshops or industries
- LIMITATION OF THE PROJECT
- It requires maintenance because they involve less complex components, particularly in terms of testing maintenance and replacement part.
- The cost of designing the device is higher the parts are higher than that of the manual transfer switch.
- Transfer switches have been known to respond to false signals when the switching device becomes faulty, this scenario that could waste generator power, albeit in small amounts.
- Operating voltages: 160V-240
- It is designed for a three phase supply
1.9 METHODOLOGY
To achieve the aim and objectives of this work, the following are the steps involved:
- Study of the previous work on the project so as to improve it efficiency.
- Draw a block diagram.
- Test for continuity of components and devices,
- Design and calculation for the device was carried out.
- Studying of various component used in circuit.
- Construction of the device is carried out
- Finally, the whole device was cased and final test was carried out.
1.10 DEFINITION OF TERMS
POWER OUTAGE / POWER FAILURE: A power outage is the loss of the electrical power network supply to an end user.
POWER FLUCTUATIONS: is a periodic dip or spikes in the electrical current of any given circuit.
POWER FAILURE: is a short- or long-term loss of the electric power to an area.
1.11 PROJECT ORGANISATION
The work is organized as follows: chapter one discuses the introductory part of the work, chapter two presents the literature review of the study, chapter three describes the methods applied, chapter four discusses the results of the work, chapter five summarizes the research outcomes and the recommendations.
CHAPTER TWO
2.0 LITERATURE REVIEW
2.1 OVERVIEW OF THE STUDY
A transfer switch is an electrical switch that switches a load between two sources. Some transfer switches are manual, in that an operator effects the transfer by throwing a switch, while others are automatic and trigger when they sense one of the sources has lost or gained power.
An Automatic Transfer Switch (ATS) is often installed where a backup generator is located, so that the generator may provide temporary electrical power if the utility source fails.
2.2 OPERATIONAL REVIEW OF A TRANSFER SWITCH
As well as transferring the load to the backup generator, an ATS may also command the backup generator to start, based on the voltage monitored on the primary supply. The transfer switch isolates the backup generator from the electric utility when the generator is on and providing temporary power. The control capability of a transfer switch may be manual only, or a combination of automatic...
CHAPTER TWO: The chapter one of this work has been displayed above. The complete chapter two of "design and construction of an automatic transfer switch using arduino" is also available. Order full work to download. Chapter two of "design and construction of an automatic transfer switch using arduino" consists of the literature review. In this chapter all the related work on "design and construction of an automatic transfer switch using arduino" was reviewed.
CHAPTER THREE: The complete chapter three of "design and construction of an automatic transfer switch using arduino" is available. Order full work to download. Chapter three of "design and construction of an automatic transfer switch using arduino" consists of the methodology. In this chapter all the method used in carrying out this work was discussed.
CHAPTER FOUR: The complete chapter four of "design and construction of an automatic transfer switch using arduino" is available. Order full work to download. Chapter four of "design and construction of an automatic transfer switch using arduino" consists of all the test conducted during the work and the result gotten after the whole work
CHAPTER FIVE: The complete chapter five of design and construction of a "design and construction of an automatic transfer switch using arduino" is available. Order full work to download. Chapter five of "comparative analysis of bitter kola, moringa oleifera seed, and wonderful kola used for waste water treatment" consist of conclusion, recommendation and references.
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