Power Quality Impact Analysis of Wind Farms on Utility Grid, A Case Study in Ethiopia
Journal Title: IOSR Journals (IOSR Journal of Electrical and Electronics Engineering) - Year 2018, Vol 13, Issue 1
Abstract
The power quality of the grid system with wind power plants is mostly affected because of its intermittent nature. Hence, in order to assure the power quality of Adama-I wind farm and its impact on the grid, continuous assessment should be done on its operation status. Accordingly analysis of harmonic emission from the wind farm as the result of frequency converters and other nonlinear loads is studied. The harmonic current data’s are collected at one of the point of common coupling (PCC) which is at 33 KV bus bar system, where 3rd and 5th current injection harmonic filters are installed. Using Matlab software, the steady state harmonic load flow analysis of the wind farm at 33KV bus-bar system is performed. As a result it has been found that the results of mathematically analyzed Total Harmonic Distortion (THD) current and voltage values are almost similar to that of simulated THD output of current and voltage. The wind farm harmonic current emission with maximum calculated value of 5.96 % is found which is to be within permissible limit set by international standard at selected PCC which is 7%. The maximum calculated THD voltage is also found to be 2.75 % which is less than 5 % set by IEEE STD-519. Hence, power quality of the wind farm can be said to be good and do not have significant negative impact on the power quality of grid system at present.
Authors and Affiliations
Abraham AlemKebede
Keywords
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- EP ID EP388672
- DOI 10.9790/1676-1301042636.
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