Analysis of sequences of events for the characterisation of faults in power systems

Meléndez, Joaquím; Quiroga, Oscar; Herraiz, S.

doi:10.1016/j.epsr.2012.01.010

Cited by 8 publications

(2 citation statements)

References 16 publications

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“…In order to improve computational performance but losing in accuracy, pattern search approaches have been proposed [5] [6] [7]. In this approach, an accurate model of the substation is usually not necessarily, which includes the connectivity of components.…”

Section: Introductionmentioning

confidence: 99%

Fast alarm processing without connectivity information

Lisboa¹,

Pereira

Vieira³

2017

CIRED - Open Access Proceedings Journal

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This paper introduces an alarm processing without using any connectivity information of the substation electrical network. In order to do so, timestamp and location readily defines specific alarm patterns. In this sense, the proposed algorithm resembles the typical procedure that operators do. This specialized alarm processing allows fast recognition of the most important events in a substation: typically, more than 70% of the alarms belong to the three groups presented in this paper. Tests in a notebook show that it is possible to process 1025 alarms per second with a state machine that model the specialist behaviour of each group, while a typical maximum density is 1,000 alarms per minute.

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Section: Introductionmentioning

confidence: 99%

Fast alarm processing without connectivity information

Lisboa¹,

Pereira

Vieira³

2017

CIRED - Open Access Proceedings Journal

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show abstract

“…In these cases, performing a forensic audit can reveal as well relevant patterns leading to or increasing the impact of faults. Meléndez et al [45] used pattern recognition techniques to identify sequences of electrical events in substations associated to major failures. This analysis process can be enhanced if sensor data is enriched with contextual information, like building semantic data [46] and cross-dependence databases [47].…”

Section: Fault Detection and Preventionmentioning

confidence: 99%

Data science for building energy management: A review

Molina-Solana

Ros

Ruiz

et al. 2017

Renewable and Sustainable Energy Reviews

228

108

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The energy consumption of residential and commercial buildings has risen steadily in recent years, an increase largely due to their HVAC systems. Expected energy loads, transportation, and storage as well as user behavior influence the quantity and quality of the energy consumed daily in buildings. However, technology is now available that can accurately monitor, collect, and store the huge amount of data involved in this process. Furthermore, this technology is capable of analyzing and exploiting such data in meaningful ways. Not surprisingly, the use of data science techniques to increase energy efficiency is currently attracting a great deal of attention and interest. This paper reviews how Data Science has been applied to address the most difficult problems faced by practitioners in the field of Energy Management, especially in the building sector. The work also discusses the challenges and opportunities that will arise with the advent of fully connected devices and new computational technologies.

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Sequence networks to the calculation of two-simultaneous faults at the same location

Moura

Lopes

Moura

2015

International Journal of Electrical Power & Energy Systems

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a b s t r a c tThe system of symmetrical components (012-system) can be used to simulate symmetrical and asymmetrical operation of power systems. However, the classical literature of Power Systems Analysis does not present one equivalent circuit in 012-system to two-simultaneous faults where there are a singleline-to-ground fault and a bolted line-to-line fault. This paper presents the equations and the new equivalent circuit mentioned. In addition, we present a comparison of results between the proposed approach and the output of the commercial software ANAFAS, which validates the methodology. We find evidence that the new equivalent circuit developed can substitute the equivalent circuits used to calculate a single line-to-ground fault and a bolted line-to-line fault.

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Analysis of sequences of events for the characterisation of faults in power systems

Cited by 8 publications

References 16 publications

Fast alarm processing without connectivity information

Fast alarm processing without connectivity information

Data science for building energy management: A review

Sequence networks to the calculation of two-simultaneous faults at the same location

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