NDLI: An advanced tool for analyzing multiple cascading failures

Content Provider	IEEE Xplore Digital Library
Author	Hardiman, R.C. Kumbale, M. Makarov, Y.V.
Copyright Year	2004
Description	Author affiliation: Southern Co. Services Inc., Birmingham, AL, USA (Hardiman, R.C.)
Abstract	This paper summarizes the Southern Company methodology and experience in advanced analysis of cascading failures. Cascading failures occur due to loss of generating units at a station, breaker failures, common tower and common right-of-way circuit outages, etc. Once an initiating event occurs, the protection system opens the surrounding breakers so that several protection control groups (PCGs, a set of components which go out of service due to action of breakers) are forced out of service. In its turn, these initial outages could cause severe overloads and voltage deviations on the operational transmission facilities. This may trigger further actions by the protection system isolating other PCGs and tripping generators, and so on. Cascading outages can propagate through the interconnection incurring significant loss of load potentially leading to a system collapse. Southern Company has developed and implemented a unique methodology that allows screening multiple initiating contingencies, simulating the cascading process, evaluating the system impacts, ranking the cascading scenarios based on their severity and likelihood, and identifying the top contingencies that require primarily attention. The methodology has been successfully used for several years. It has already influenced real-life decision-making in transmission system enhancement project prioritization and selection. This methodology is reported in this paper. This paper also provides a brief description of the recent system blackouts worldwide and develops their generic scenario. It is shown that the proposed approach is capable of simulating similar scenarios.
Starting Page	629
Ending Page	634
File Size	479628
Page Count	6
File Format	PDF
ISBN	0976131919
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-09-12
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Iowa State University
Subject Keyword	Failure analysis Power system faults Power system protection Poles and towers Force control Control systems Voltage Integrated circuit interconnections Propagation losses Decision making
Content Type	Text
Resource Type	Article

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2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
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