NDLI: Protection scheme for active distribution networks using positive-sequence components

Content Provider	IEEE Xplore Digital Library
Author	Wentao Huang Nengling Tai Ke Li Xiaodong Zheng Shi Chen
Copyright Year	2015
Abstract	Active distribution network is a new pattern for integrating distributed generators (DGs) and smart loads. It features in flexible topologies, plug-and-play functionalities, and active control and management. These features, however, make the conventional protection schemes ineffective in active distribution networks together with the fault-current limiting of inverter-interfaced DGs. This paper proposes protection schemes using positive-sequence components with the aid of the advanced communication techniques. The directional comparison method uses the positive-sequence current fault components to detect solid or low-resistance faults. The impedance differential method using positive-sequence currents and voltages is presented to clear or alarm medium- and large-impedance faults. Both of the protection methods are immune to the varied fault currents and do not require data synchronization between ends of protected feeders. Simulation on a 0.4-kV active distribution network demonstrates the effectiveness of the proposed protection scheme.
Starting Page	1
Ending Page	5
File Size	968203
Page Count	5
File Format	PDF
ISBN	9781467380409
DOI	10.1109/PESGM.2015.7286368
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	Microgrids Circuit faults Resistance Impedance Solids Distributed databases Generators distributed generators Directional comparison method impedance differential method positive-sequence current fault components positive-sequence currents active distribution networks
Content Type	Text
Resource Type	Article

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