International Research Journal of Engineering and Technology (IRJET) Volume: 04 Issue: 02 | Feb -2017
www.irjet.net
e-ISSN: 2395 -0056 p-ISSN: 2395-0072
A Review On Power Quality Issues and Standards Nirav Patel1, Kenil Gandhi2, Digpal Mahida3, Praful Chudasama4 Student, Dept. of Electrical Engineering, Shroff S R Rotary Institute of Chemical Technology, Gujarat, India Student, Dept. of Electrical Engineering, Shroff S R Rotary Institute of Chemical Technology, Gujarat, India 3 Student, Dept. of Electrical Engineering, Shroff S R Rotary Institute of Chemical Technology, Gujarat, India 4 Head of Electrical Engineering, Shroff S R Rotary Institute of Chemical Technology, Gujarat, India
1 2
--------------------------------------------------------------------***-------------------------------------------------------------------Abstract – This Review Paper gives basic idea about power quality, necessity of power quality, evaluation and problems related to power quality. We will focus on issues such as harmonic distortion, short interruption, long interruption, low voltage, voltage sags, Unbalanced Loads, voltage swell, voltage spike, wiring and grounding, Energy wastage on unoccupied space and poor power factor and IEEE standards are mentioned for power quality.
2. WHY WE NEED POWER QUALITY? The Main reason that we are interested in power quality is economic value. There are economic effects on utilities, their customers, and suppliers of load equipment. The quality of power can have a direct economic effect on many consumers. This usually means electronically controlled, energy efficient equipment that is often much more sensitive to variation in the supply voltage. Residential customers typically do not suffer direct economic loss or the helplessness to earn income as a result of most power quality problems, but they can be a potent force when they understand that the utility is providing poor service. Many manufacturers are also unaware of the types of disturbances that can happened on power systems. The primary responsibility for correcting shortage in load equipment ultimately lies with the end user who must purchase and operate it. Specifications must include power performance criteria. Since many end users are also unaware of the danger, one useful service that utilities can provide is especially information on power quality and the requirements of load equipment to properly operate in the real world.
Keywords: Disturbances, Energy wastage, Electrical equipment, Harmonic, IEEE Standards, Power quality
1. INTRODUCTION Before we know about power quality audit we must know about what is audit? Audit - The word audit is come from a Latin word "audire" which means "to hear Quality Audit - Quality audits are performed to verify accordance to standards through review of objective confirmation. A system of quality audits may check the successfulness of a quality management system.
3. THE POWER QUALITY EVALUATION PROCEDURE [3]
Power Quality Audit [2] - in spite of review papers, articles, and books published in the area of electric power quality, its definition has not been universally decided upon. However, everybody accepts that it is a very important aspect of power systems and electric machinery with direct results on efficiency, safety, and reliability. Various sources use the term “power quality” with different aspects. It is used commonly with “supply reliability”, “service quality”, “voltage quality”, “current quality”, “quality of supply” and “quality of consumption”. Reading all the different definitions, power quality is generally meant to present the quality of voltage and/or the quality of current and can be defined as: the measure, analysis, and improvement of the bus voltage to maintain a sinusoidal waveform at rated voltage and frequency.
© 2017, IRJET
|
Impact Factor value: 5.181
Basic evaluation procedure for the power quality audit. First step is to identify the problem what is the exact problem for ex. Voltage sag, voltage swell, flickering etc. After that list out the problems and arrange into particular list so that we can characterizes what is the root cause of the problem in sense where the problem is being observed. After that only we can list out the solutions regarding to the corresponding problems. Now our task is to choose the solution into the range of the solution which is the best suitable for the problem it considers such aspects such as money, area etc. After selecting suitable solution then and then only we can solve the problem. Power quality has wide range of problems in different phenomena. For improvement of power quality and equipment performance each phenomenon has range of different causes and individual solutions. Looking forward to
|
ISO 9001:2008 Certified Journal
|
Page 247