Comprehensive Review of Power Quality Assessment, Monitoring, and Compensation in EHV Networks

Abstract Power Quality assessment is very important for Extra High Voltage networks. We need to make sure these networks are reliable, efficient and meet standards. Disturbances like harmonics, voltage surges, flicker and transients can move across transmission systems. This affects loads and distributed generation integration. This review looks at ways to monitor Power Quality measures to compare performance, strategies to fix problems and case studies that are relevant, to Extra High Voltage substations. These pictures show how to watch over systems they use numbers and payment plans and that helps us understand how to measure power quality in places with really high voltage, like power plants. Keywords Power Quality (PQ), Extra High Voltage (EHV) Networks, Harmonics, Voltage Sags and Swells, Reactive Power Compensation, Compound PQ Indices.