Impact of remote control failure on power system restoration time

Edstrom, F.; Söder, Lennart

doi:10.1109/pmaps.2010.5528893

Cited by 4 publications

(2 citation statements)

References 9 publications

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“…To expand the research in this field new methods considering this risk is needed. To extend the research in this area, a method to analyze the impact of remote control failure on power system restoration time due to battery undersizing was presented by the authors in [10]. However, no consideration is taken to the possibility for a failure in a component during the restoration.…”

Section: Notationmentioning

confidence: 99%

On uncontrolled system separation in power system restoration

Edstrom

Söder

2011

2011 North American Power Symposium

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Abstract-Since extended power outages causes severe stress on society and the restoration following a black out is a complex and time consuming task, efficient restoration strategies are needed. During the restoration, the power system undergoes continual changes and therefore it is subject to desired and undesired operations and failures which might be devastating. The main contribution of this paper is a new method to estimate the risk of an uncontrolled system separation in case of a loss of a transmission line or a transformer during a restoration process. The method in this paper assigns failure rates to the transformers and the transmission lines. Further, a graph theoretical method are used to find probability bounds for an uncontrolled system separation for a whole restoration sequence. In a numerical example are three restoration strategies applied to an IEEE 14 bus test system and evaluated. It is shown in the numerical example that the restoration strategy has an high impact on the probability for a system separation.

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Section: Notationmentioning

confidence: 99%

On uncontrolled system separation in power system restoration

Edstrom

Söder

2011

2011 North American Power Symposium

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“…However, [2] shows that little research has been focused on the impact of limited backup power during extended blackouts. To extend the research in this area, the authors have in [3] developed a method to analyze the impact of remote control failure due to battery undersizing at substations on power system restoration time. However, no consideration is taken to the reliability in the SCADA system in this work.…”

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confidence: 99%

A circuit breaker reliability model for restoration planning considering risk of communication outage

Edstrom

Söder

2011

2011 IEEE Trondheim PowerTech

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Abstract-A large scale blackout is a long term loss of electricity over a large geographical area. In order to succeed with the restoration, the electric utility SCADA system must be highly reliable not only in normal operation but also during a black out. The main contribution of this paper is a circuit breaker (CB) reliability model to be used in restoration planning. The model consider both the reliability of a SCADA system and the reliability of a communication system during a power outage. If a remote control of CB fails, due to battery undersizing, it is assumed in the paper that a manual operation of CB can be performed if field personal can communicate with the TSO head-quarter. The evaluation of the reliability to operate CB is performed by solving the so called s-t reliability problem for a graph with failure prone components. The method is applied in a case study where the SCADA architecture for an IEEE reliability test system is modeled.

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