ABSTRACT
Power is an important infrastructure that decides the economic growth of a country. Both electrical utilities and end users of electricity have become more concerned about the quality and reliability of electric power. Power quality is defined as “any power problem manifested in voltage, current or frequency deviations that result in failure or misoperation of customer equipment” (Ali 2012). Throughout the world, with the increase in generation and demand, the electric power industry has gone under various changes in improving power quality. Problems of power quality arise from a variety of different reasons, and different solutions can be used to improve quality and equipment performance. It is a term used to broadly encompass the entire scope of interaction among electric suppliers, environment, and users of systems and products (Bollen 2000). Figure 4.1 gives the general steps that are often required in a power quality investigation, along with the major considerations that must be addressed at each step.
