Journal of Electrical Engineering : Volume 17 / 2017 - Edition : 2

ELECTRIC POWER QUALITY RECOGNITION FOR DISTRIBUTION FEEDERS: A REAL TIME STUDY

Authors:
S.SURESH
R.GNANADASS
N.P. SUBRAMANIAM
C.Bharatiraja
Domain:
industrial electrical power systems
Abstract:
Power Quality (PQ) issues are bringing more challenges to the large scale and medium scale industries.The usage of power electronic converters causes vulnerable PQ disturbances at Point of Common Coupling (PCC). When running theheavy equipment, the disturbances (harmonics, RMS variations, and switching transients) level is very high as well as the power factor (PF) is poor. Due to this poor PF, reactive power consumption in load increases accordingly total power increases. An electronic device such as LED lights, fluorescent lamps, computers, copy machines, and laser printers also disturbs the supply voltage. We are very well known that every PQ problem plays a considerable role of the economic aspects. Many researchers investigated PQ audit over a three decades. However these studies and its analysis are in simulation level. Hence, the PQ analyzer based study is required to find out the PQ issues at distribution feeders. It will be a valuable guide for researchers in the domain of power quality mitigation for further improvement in terms of reducing the THD as well as reduce the effect of sags and swells. Therefore, in this paper, the measurement has been carried out at different intervals during load condition and analyzed all types of disturbances. Also, this paper gives a brief real time PQ measurement using PQ analyzer HIOKI PW3198 at distribution feeders and it gives an idea to the researcher to optimize problem-related to PQ with respect to the high rated and low rated
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