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- Herausgeber: BookRix
- Kategorie: Fachliteratur
- Sprache: Englisch
Power systems have two components of apparent power: active and reactive power. Both components are necessary for functioning of electrical systems. The active power is the average power absorbed by the resistive load. The reactive power is the measure of energy exchange between the source and reactive power of load. Energy storage devices do not dissipate or supply power, but exchange power with the rest of system.
Active power is the one that is converted to other forms of energy in the load yet reactive power is only responsible for magnetizing purposes. Power factor is a ratio depicting how much of the power supplied is real. The reactive current contribute in the value of the overall magnitude of current in transmission lines causing unnecessarily high line currents and low power factor.
Since a low power factor means higher amount of apparent power need to be supplied by the utility company, thus the company must also use bigger generators, large transformers and thicker transmission/distribution lines. This requires a higher capital expenditure and operational cost which usually result in the cost being passed to the consumer.
In this research, we seek to identify the effects of a low power factor on Swaziland Electricity Company’s power supply system and recommend possible solutions to the problem. The results are useful in determining how to optimally deliver power to a load at a power factor that is reasonably close to unity, thus reducing the utility’s operational costs while increasing the quality of the service being supplied.
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Veröffentlichungsjahr: 2020
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Power Factor Correction
BookRix GmbH & Co. KG81371 MunichPower Factor Correction
Power Factor Correction
By
Dr. Hedaya Mahmood Alasooly
ABSTRACT
Reactive Power Compensation
The projectexamined and corrected by
Dr HidaiaMahmood Alassouli
Project done bythe Student Muzi Dlamini
Electrical andElectronicEngineering DepartmentUniversity of Swaziland
ABSTRACT
Power systems have two components of apparent power: active and reactive power. Both components are necessary for functioning of electrical systems. The active power is the average power absorbed by the resistive load. The reactive power is the measure of energy exchange between the source and reactive power of load. Energy storage devices do not dissipate or supply power, but exchange power with the rest of system.
Active power is the one that is converted to other forms of energy in the load yet reactive power is only responsible for magnetizing purposes. Power factor is a ratio depicting how much of the power supplied is real. The reactive current contribute in the value of the overall magnitude of current in transmission lines causing unnecessarily high line currents and low power factor.
Since a low power factor means higher amount of apparent power need to be supplied by the utility company, thus the company must also use bigger generators, large transformers and thicker transmission/distribution lines. This requires a higher capital expenditure and operational cost which usually result in the cost being passed to the consumer.
In this research, we seek to identify the effects of a low power factor on Swaziland Electricity Company’s power supply system and recommend possible solutions to the problem. The results are useful in determining how to optimally deliver power to a load at a power factor that is reasonably close to unity, thus reducing the utility’s operational costs while increasing the quality of the service being supplied.
TABLE OF CONTENTS
ACKNOWLEDGEMENTS
This project would not have been a success without the mutual help and guidance of my academic and industrial supervisors, Mr. J.S. Manong’a and Mr. E.S. Mkhonta.
I would also like to appreciate:
The Swaziland Electricity Company for providing me with all the resources and training which were required during the project.
My family for their support and motivation.
My colleagues who gave suggestions for the improvement of some parts of the project.
Mr. M. Maziya and Mrs. H. Hlophe who assisted on simulations and all the SEC project staff.
The almighty God for always keeping me strong and safe while working on this project.
TABLE OF CONTENTS
ABSTRACT
CHAPTER 1: INTRODUCTION
CHAPTER 2: LITERATURE REVIEW
CHAPTER 3: RESEARCH METHODOLOGY
CHAPTER 4: DATA COLLECTION
CHAPTER 5: RESULTS AND ANALYSIS OF THE SIMULATION MODEL
CHAPTER 6: BENEFITS OF POWER FACTOR CORRECTION
CHAPTER 7: FINDINGS, RECOMMENDATIONS AND CONCLUSIONS
REFERENCES
APPENDIXES
Appendix A: Load Profiles
Appendix B – Substations
Appendix C : Simulation Results
