NDLI: Efficient Identification Method for Power Line Outages in the Smart Power Grid

Content Provider	IEEE Xplore Digital Library
Author	Jung-Chieh Chen Wen-Tai Li Chao-Kai Wen Jen-Hao Teng Pangan Ting
Copyright Year	1969
Abstract	This paper considers the use of phasor angle measurements provided by phasor measurement units to identify multiple power line outages. The problem of power line outage identification has traditionally been formulated as a combinatorial optimization problem, the optimal solution of which can be found through an exhaustive search. However, the size of the search space grows exponentially with the number of outages and may thus pose a potential problem for the practical implementation of an exhaustive search, especially when multiple power line outages are considered in a power system. To reduce the complexity while improving outage detection performance, we propose a novel global stochastic optimization technique based on cross-entropy optimization, which has been proven to be a powerful tool for many combinatorial optimization problems, to identify multiple line outages. To validate the effectiveness of the proposed approach, the algorithm is tested using IEEE 118- and 300-bus systems, as well as a Polish 2736-bus system. Simulation results demonstrate that the percentage of correctly identified line outages achieved by the proposed method outperforms those obtained by existing sparse signal recovery algorithms.
Sponsorship	IEEE Power Engineering Society
Starting Page	1788
Ending Page	1800
Page Count	13
File Size	2213734
File Format	PDF
ISSN	08858950
Volume Number	29
Issue Number	4
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Optimization Vectors Phasor measurement units Power systems Transmission line measurements Covariance matrices Search problems stochastic optimization technique Cross-entropy optimization identification of line outages smart grids
Content Type	Text
Resource Type	Article
Subject	Energy Engineering and Power Technology Electrical and Electronic Engineering

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