Anatomy of power system blackouts and preventive strategies by rational supervision and control of protection systems

Phadke, A.G.; Horowitz, Stanley H.; Thorp, J.S.

doi:10.2172/32561

Cited by 13 publications

(4 citation statements)

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“…Research on the monitoring and control of protection hidden failure is also involved [7], which is aimed at taking precautionary measures against hidden failures to avoid serious cascading of power system. A technology embodiment for the monitoring and control system against relay-protection hidden failures [27] was proposed by AG Phadke and JS Thorp of Virginia Tech in 1995, but it was not applied in industry since the technology was not mature enough. In 2004, a monitoring system was developed against hidden failures by the wide-area protection system, however was of poor reliability and the cost was high [28].…”

Section: Monitoring Methods Of Hidden Failuresmentioning

confidence: 99%

Review and prospect of hidden failure: protection system and security and stability control system

Zhao

et al. 2015

J. Mod. Power Syst. Clean Energy

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With the construction of the ''3-level, 3-verticalline, and 1-circle'' power backbone in China, it's stricter and stricter on relay protection system and security and stability control system (SSCS) for reliable power transmission. Lots of blackouts in the world had happened, one main reason for which is the hidden failures of relay protection system or SSCS. Much work had been done about the hidden failure of relay protection, including classification, probability model, analysis methods of effects on power grid, and monitoring measures, which was summarized in the paper. The operation experiences of SSCS indicated that there might be hidden failures in five links of the security and stability control device (SSCD), e.g. measuring, control strategy, setting, communication and voting pattern. In addition, the coordination hidden failure among relay protection system, SSCS, and power plant's parameters related to the power grid was pointed out for more attention. In the future, amounts of work will be expected to be conducted on hidden failure: model building, assessment methods, application of research achievements, operation management of secondary equipment, and coordination problem between the relay protection system and the SSCS.

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Section: Monitoring Methods Of Hidden Failuresmentioning

confidence: 99%

Review and prospect of hidden failure: protection system and security and stability control system

Zhao

et al. 2015

J. Mod. Power Syst. Clean Energy

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“…A h idden failure is defined as a permanent defect that will cause a relay or a relay system to incorrectly and inappropriately remove a circuit element(s) as a direct consequence of another switching event in [8].…”

Section: A the Definition Of Hidden Failurementioning

confidence: 99%

“…Hidden failu re may be caused by many reasons, but main ly the following [7][8][9][10][11] (1) The hardware defects of relay protection. This kind of hidden failure may be caused by the fault of communication system, measuring elements (CT/PT), poor contact, insulation fault, wrong wiring, protection co mponents aging, etc.…”

Section: B the Causes Of Hidden Failurementioning

confidence: 99%

Study on hidden failure of relay protection in power system

Cheng¹,

Chen²,

Jian-feng³

et al. 2013

2013 IEEE International Conference on Cyber Technology in Automation, Control and Intelligent Systems

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S tudies of major blackouts reveal that power system protection devices have contributed to a majority of system disturbances. As the most troublesome failure of relay protection, hidden failure needs more attention. In this paper, emphasis is placed on the importance of studies on hidden failure of relay protection which causes cascading failures. By clarifying the concept, characteristics and harmfulness of hidden failure, the paper proposes two response measures -vulnerability analysis and risk assessment, monitoring and control system, and draws a conclusion that the corporation of both could be the developing trend in the future.

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“…Such a "hidden failure" has been defined as "a defect such as a component failure, inappropriate setting or incorrect external connection that remains undetected until some other system event causes the hidden failure to initiate a cascading outage" (Phadke, Horowitz, & Thorp, 1995). A frequently cited example of a hidden failure is a failed fault detector or communication link in a directional comparison-blocking scheme that causes a relay to open a breaker inappropriately in the event of a fault on the adjacent line.…”

Section: Chapter 1 Introductionmentioning

confidence: 99%

Adaptive wide area protection of power systems

Huang

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Anatomy of power system blackouts and preventive strategies by rational supervision and control of protection systems

Abstract: This report has been reproduced directly from the best available copy.

Cited by 13 publications

References 0 publications

Review and prospect of hidden failure: protection system and security and stability control system

Review and prospect of hidden failure: protection system and security and stability control system

Study on hidden failure of relay protection in power system

Adaptive wide area protection of power systems

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