500kV IPT breaker failure protection: An application of dual timer scheme for short critical clearing time

Pardo, Jhon; Elmore, J. C.; Duong, V. G.

doi:10.1109/cpre.2012.6201226

2012 65th Annual Conference for Protective Relay Engineers 2012

DOI: 10.1109/cpre.2012.6201226

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500kV IPT breaker failure protection: An application of dual timer scheme for short critical clearing time

Jhon Pardo¹,

J. C. Elmore

V. G. Duong

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“…Moreover, the specified stability limit (minimum CCT) is satisfied and secure operation in terms of transient stability is guaranteed. In this work, the minimum desired CCT (CCT lim ) is assumed to be 200 ms. That is a reasonable limit, since it can be assumed that the protection equipment will detect and clear the fault by opening the breakers within this time span [31].…”

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A decision support tool for transient stability preventive control

Pertl

Weckesser

Rezkalla

et al. 2017

Electric Power Systems Research

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The paper presents a decision support tool for transient stability preventive control contributing to increased situation awareness of control room operators by providing additional information about the state of the power system in terms of transient stability. A timedomain approach is used to assess the transient stability for potentially critical faults. Potential critical fault locations are identified by a critical bus screening through analysis of pre-disturbance steady-state conditions. The identified buses are subject to a fast critical contingency screening determining the actual critical contingencies/buses. These two screenings aim at reducing the computational burden of the assessment, since only contingencies considered as critical are taken into account. The critical clearing times for the critical contingencies are determined. A preventive re-dispatch of generators to ensure a predefined minimum critical clearing time for faults at all buses is proposed, while costs are minimized. The results of the assessment are presented to the control room operator, who decides to accept the suggested dispatch or to repeat the assessment considering additional user-specific constraints. The effectiveness of the proposed method is demonstrated on a standard nine-bus and the New England test system.

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A decision support tool for transient stability preventive control

Pertl

Weckesser

Rezkalla

et al. 2017

Electric Power Systems Research

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Improvement of Power System Transient Stability in the Event of Multi-Phase Faults and Circuit Breaker Failures

Robak

Machowski

Skwarski

et al. 2020

IEEE Trans. Power Syst.

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500kV IPT breaker failure protection: An application of dual timer scheme for short critical clearing time

Cited by 2 publications

References 0 publications

A decision support tool for transient stability preventive control

A decision support tool for transient stability preventive control

Improvement of Power System Transient Stability in the Event of Multi-Phase Faults and Circuit Breaker Failures

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