A Case Study on Power Quality Analysis for 600 kW Grid Connected Wind Farm

Abstract

With increase in energy demand, more numbers of renewable energy systems (RES) are connected to the grid. The integration of RES to the main electrical grid, causes the distortion in current and voltage waveforms. This distorted waveform has detrimental effects to the loads connected to that system. Grid systems’ current and voltage waveforms are also non-sinusoidal, when non-linear loads are connected to it. In this paper, current and voltage waveforms data from both grid side and output terminal of wind farm are collected by connecting fluke power quality analyzer (PQA) instrument and harmonic content are examined. Later it is compared with institute of electrical and electronics engineers (IEEE) and international electro technical commission (IEC) standards limits and conclusions are drawn from the analysed results.