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Sensors 2014, 14(7), 13114-13133; doi:10.3390/s140713114
Article

Distributed Power-Line Outage Detection Based on Wide Area Measurement System

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Received: 16 April 2014; in revised form: 12 July 2014 / Accepted: 14 July 2014 / Published: 21 July 2014
(This article belongs to the Special Issue Sensor Computing for Mobile Security and Big Data Analytics)
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Abstract: In modern power grids, the fast and reliable detection of power-line outages is an important functionality, which prevents cascading failures and facilitates an accurate state estimation to monitor the real-time conditions of the grids. However, most of the existing approaches for outage detection suffer from two drawbacks, namely: (i) high computational complexity; and (ii) relying on a centralized means of implementation. The high computational complexity limits the practical usage of outage detection only for the case of single-line or double-line outages. Meanwhile, the centralized means of implementation raises security and privacy issues. Considering these drawbacks, the present paper proposes a distributed framework, which carries out in-network information processing and only shares estimates on boundaries with the neighboring control areas. This novel framework relies on a convex-relaxed formulation of the line outage detection problem and leverages the alternating direction method of multipliers (ADMM) for its distributed solution. The proposed framework invokes a low computational complexity, requiring only linear and simple matrix-vector operations. We also extend this framework to incorporate the sparse property of the measurement matrix and employ the LSQRalgorithm to enable a warm start, which further accelerates the algorithm. Analysis and simulation tests validate the correctness and effectiveness of the proposed approaches.
Keywords: line outage detection; convex optimization; smart grid; distributed computing; alternating direction method of multipliers line outage detection; convex optimization; smart grid; distributed computing; alternating direction method of multipliers
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Zhao, L.; Song, W.-Z. Distributed Power-Line Outage Detection Based on Wide Area Measurement System. Sensors 2014, 14, 13114-13133.

AMA Style

Zhao L, Song W-Z. Distributed Power-Line Outage Detection Based on Wide Area Measurement System. Sensors. 2014; 14(7):13114-13133.

Chicago/Turabian Style

Zhao, Liang; Song, Wen-Zhan. 2014. "Distributed Power-Line Outage Detection Based on Wide Area Measurement System." Sensors 14, no. 7: 13114-13133.



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