NDLI: A procedure to analyze the impact of three-phase unbalanced conditions on switching overvoltages in systems with Distributed Generation

Content Provider	IEEE Xplore Digital Library
Author	Otremba, L. Pesente, J.R. Otto, R.B. Ramos, R.A.
Copyright Year	2015
Description	Author affiliation: State Univ. of Western Parana, Iguassu Falls, Brazil (Otremba, L.) \|\| Eng. Sch. of Sao Carlos, Univ. of Sao Paulo, Sao Carlos, Brazil (Ramos, R.A.) \|\| Dept. of Electical Studies, Itaipu Power Plant, Iguassu Falls, Brazil (Pesente, J.R.) \|\| Itaipu Technol. Park Found., Iguassu Falls, Brazil (Otto, R.B.)
Abstract	Given the relatively new context in which Distributed Geeneration (DG) is inserted in distribution systems, for certain aspects of the operation of this type of system there are relatively few studies of power quality considering the presence of DG. One of these aspects is certainly the possibility of DG operating under unbalanced three-phase operating conditions, which is quite common in distribution systems. The present work is intended to fill this gap with respect to issues related to switching overvoltages, particularly those originated from energizing the distribution lines. In particular, this work is devoted to analyze how the imbalance among the phases of a distribution system can impact the mentioned overvoltages in distribution systems with the presence of DG. A systematic procedure is developed to find out the worst case overvoltage scenario taking all the previous features into account. This procedure is tested in a real model of a distribution system and it was found out that the imbalance can be a factor impacting the magnitude of the largest overvoltage amplitude. The procedure developed in this paper can help improving relay and breaker settings for systems that might operate in the previously mentioned conditions.
Starting Page	1
Ending Page	5
File Size	154036
Page Count	5
File Format	PDF
ISBN	9781467380409
DOI	10.1109/PESGM.2015.7286379
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-07-26
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Surges Switches Load modeling Distributed power generation Integrated circuit modeling Circuit breakers Resonant frequency Unbalanced Conditions Distributed Generation Electromagnetic Transients Switching Overvoltages
Content Type	Text
Resource Type	Article

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