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Impact of high PV penetration on voltage regulation in electrical distribution systems

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2 Author(s)
Ari, G.K. ; Dept. of Electr. & Comput. Eng., Univ. of Nevada, Las Vegas, NV, USA ; Baghzouz, Y.

Cloud-induced transients induced in photovoltaic (PV) power are considered as a potential barrier to further expansion when the penetration of this renewable generation resource reaches a high level in distribution systems. Such transients can cause voltage flicker or excessive operation of the voltage regulating equipment. This article studies these effects on part of a local distribution substation. Actual transformer load and solar irradiance data based on 1-minute interval are used to simulate the impact of 20% PV penetration on the feeder voltage during a time period that covers both clear and cloudy skies. Based on some specified conditions, the simulations indicate that voltage flicker is not a concern, but the tap changer operates excessively even when using a 5-minute time delay.

Published in:

Clean Electrical Power (ICCEP), 2011 International Conference on

Date of Conference:

14-16 June 2011