JOURNAL OF FACULTY OF ENGINEERING & TECHNOLOGY, Vol 24, No 2 (2017)

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ANALYZING THE IMPACT OF HVDC TRANSMISSION ON A DISTRIBUTION SYSTEM LOADED WITH NON LINEAR LOADS

Haroon Farooq, Waqas Ali, Ali Raza, Muhammad Usama, Mohamed Emad Farrag

Abstract


Owing to several economic and technical benefits over AC transmission, High Voltage Direct Current Transmission (HVDC) has drawn a lot of attention in recent times. HVDC gives rise to harmonic distortion due to the power flow through power electronic inverters. The scenario gets even more critical by considering the increased influx of non linear loads in distribution systems. This research work strives to evaluate the impact of HVDC inverters on such distribution systems. The harmonic model of the inverter, developed by experimentation, is modified to decrease the harmonic distortion; which is then used for simulating a generic UK residential distribution system deploying Electrical Transient Analyzer Program. The simulation results indicate increased harmonic distortion in voltage beyond standard limits at high tension as well as low tension sides of the distribution transformer. The results also show that harmonic distortion produced by the HVDC inverters may trigger resonance at a particular harmonic frequency.


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Faculty of Engineering & Technology

University of the Punjab

Lahore-54590-Pakistan