Power system blackouts - literature review

Atputharajah, A.; Saha, Tapan Kumar

doi:10.1109/iciinfs.2009.5429818

Cited by 99 publications

(58 citation statements)

References 19 publications

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“…There are numerous examples of evidence which indicate that relying solely on protection engineers for decision making and validation in the setting of protective devices can still lead to some unexpected (or hidden) errors, despite multiple instances of checking, and thorough verification and quality control processes [1,2]. These errors may result from erroneous calculations, from engineers' misunderstanding or mistranslating of setting policies, or from potential errors in the process of the application of settings to the protection devices or in the approval or commissioning processes.…”

Section: Introductionmentioning

confidence: 99%

Design of an intelligent system for comprehensive validation of protection settings

Hong¹,

Booth²,

Catterson³

2016

13th International Conference on Development in Power System Protection 2016 (DPSP)

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The reliable operation of protection systems depends on the correct settings of protective devices. The complexity of power networks and the large number of protection setting parameters make it extremely challenging to comprehensively validate the settings. This paper presents the design of a hybrid Rule-Based (RB) and Model-Based (MB) intelligent system termed Power system Protection Smart Tool (PPST), which is proposed as a solution for addressing the challenges associated with protection settings validation and performance checking. The RB element evaluates the settings using rules extracted from experts' knowledge and utility setting policies, while the MB element automatically interfaces with DIgSILENT PowerFactory to populate power network and protection system models to simulate and check the actual performance of the protection system under a variety of operational contexts. A case study is presented to demonstrate the operation of PPST, which shows that it is capable of effectively conducting the protection settings validation and performance checking task.

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Section: Introductionmentioning

confidence: 99%

Design of an intelligent system for comprehensive validation of protection settings

Hong¹,

Booth²,

Catterson³

2016

13th International Conference on Development in Power System Protection 2016 (DPSP)

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“…2,[10][11][12][13] The major culprit, in this case, is overloaded transmission systems. 2,[10][11][12][13] The major culprit, in this case, is overloaded transmission systems.…”

mentioning

confidence: 99%

A critical review of the state‐of‐art schemes for under voltage load shedding

Larik

Mustafa

Aman

2019

Int Trans Electr Energ Syst

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Summary A blackout is usually the result of increasing load beyond the transmission capacity of the power system. One of the main reasons for power blackouts is voltage collapse. To avoid this problem, the proper corrective measures called load shedding is required. In critical and extreme emergencies, under voltage load shedding (UVLS) is performed as a final remedy to avoid a larger scale voltage collapse. Therefore, UVLS is considered state of the art to achieve voltage stability. This review summarizes and updates the important aspects of UVLS; it also provides principle understanding of UVLS, which are critical in planning such defense schemes. Moreover, this article provides a discussion on recent state‐of‐art UVLS schemes applied in various power industries. Additionally, the pros and cons of the conventional and computational intelligence techniques are discussed. It is envisioned that this work will serve as one‐stop information for power system engineers, designers, and researches.

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“…Transient instability can lead to widespread outages due to unintended tripping of protection devices which could trigger a cascaded breakdown of the power system [12]. Hence, it is crucial to assess the transient stability of power systems 25 online on a grid-wide basis and set preventive actions if issues are identified [13,14].…”

mentioning

confidence: 99%

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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Power system blackouts - literature review

Cited by 99 publications

References 19 publications

Design of an intelligent system for comprehensive validation of protection settings

Design of an intelligent system for comprehensive validation of protection settings

A critical review of the state‐of‐art schemes for under voltage load shedding

A decision support tool for transient stability preventive control

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