Reliability of digital relays with self-checking methods

Brandão, Augusto F.; Senger, Eduardo Cesar

doi:10.1016/0142-0615(93)90037-n

Cited by 3 publications

(1 citation statement)

References 3 publications

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“…Other than the independent system of protection or measurement, the condition monitoring system is generally related to various equipments with different functions, and thus this scenario may bring about the complicated relationship among multitudinous faulty quantities in the first place [2]. Secondly, it is usually difficult to determine or position the faulty elements with the help of above quantities simply from the network information, as the abnormal states of the secondary devices may in form of abnormal message format, abnormal message receiving an abnormal message sending, and furthermore, the impact of these abnormal behavior to a certain function of the substation, which is the main issue in this paper, can be of great difficulty.…”

Section: Introductionmentioning

confidence: 99%

A novel kind of monitoring and analyzing system for digital substation functional loop

Lai¹,

Peng²,

Xiangning

et al. 2013

2013 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC)

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Currently, the schedule preparation of conditionbased maintenance for the secondary devices in digital substation highly relies on the information supporting of the condition monitoring. In this paper, a novel kind of real-time condition monitoring and analyzing system for the functional loop applied in the digital substation is introduced. Based on the data captured in the network of process level by the collecting unit, an analyzer is equipped in a higher level in order to get the configuration of the digital substation, and furthermore, this virtual linkage of functional loop is displayed and updated on the client as undirected graphs. Using these graphs and with the help of the information in the offline database, this system can offer estimation results for the MTTF of a certain functional loop, which makes contribution to the digital substation condition-based maintenance in real-time.

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Section: Introductionmentioning

confidence: 99%

A novel kind of monitoring and analyzing system for digital substation functional loop

Lai¹,

Peng²,

Xiangning

et al. 2013

2013 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC)

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Modelling the influence of preventive maintenance on protection system reliability performance

Vermeulen

Rijanto

Schouten

1998

IEEE Trans. Power Delivery

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Protection systems exhibit two important types of failures: failures to operate and unwanted operations. Both failure modes have been introduced in a model description designed for the evaluation of the influence of preventive maintenance on protection system reliability performance. The model description is constructed as a continuous time Markov chain. The system states and the transitions be1,ween states are generated in a general and systematic manner which makes it possible to apply the model description to a lot of different situations. Through an example it is shown that (the quality) of preventive maintenance can have significant influence upon 1 he reliability performance of a given system.

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Online condition monitoring methodology for relay protection based on self-test information

Huang

Chen

Qiu³

et al. 2011

2011 International Conference on Advanced Power System Automation and Protection

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Reliability of digital relays with self-checking methods

Cited by 3 publications

References 3 publications

A novel kind of monitoring and analyzing system for digital substation functional loop

A novel kind of monitoring and analyzing system for digital substation functional loop

Modelling the influence of preventive maintenance on protection system reliability performance

Online condition monitoring methodology for relay protection based on self-test information

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