A Case Study on Power Quality Problems and Improvement

The quality of power in the power system is severely affected by the presence of harmonics. This harmonics adversely effects the power system performance. Some of the effects are over heating of metal parts, noise in motors, low efficiency in motors etc. The effects produced by the harmonics are reduced by adopting some corrective measures. This paper presents a review of the main power quality (PQ) problems with their associated causes and solutions with codes and standards also concludes with some solutions to mitigate the Power Quality problems are presented. Some power quality enhancement devices are also listed. It is necessary for engineers, technicians, and system operators to become familiar with power quality issues.