An analysis on the use of pre-processing methods in evolutionary fuzzy systems for subgroup discovery

Carmona, C. J.; Luengo, Julián; González, Pedro; Jesus, María José del

doi:10.1016/j.eswa.2012.04.029

Cited by 6 publications

(2 citation statements)

References 45 publications

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“…A substantial body of scientific work deals with the problem of determining faults in the power system and the characteristics of these faults concerning their impact on system availability [1][2][3][4][5]. Some papers describe the location function and methods for determining the state of circuit breakers in the power system [6][7][8][9]. Many researchers do not address the problem of diagnosing the breaker state and its availability to perform a function in the likelihood of an undesirable event [10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Real-Time Circuit Breaker Availability Assessment in the Transmission Network

Petrović¹,

Glavaš

Noskov³

et al. 2021

Applied Sciences

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Circuit breakers (CBs) in the transmission network are the basic elements for energy flow control. CB diagnosis represents a decisive action for increasing power system reliability and safety. Their actual availability status and ability to perform major functions can sometimes be difficult to determine. This paper presents a general state estimation model based on fuzzy logic (FL), membership function (MF), and expert knowledge for diagnosis schemes to handle unclear information in the diagnosis procedure. The proposed model uses inputs from the Supervisory Control and Data Acquisition (SCADA) system, data on the position and state of the switch, changes in current in the network element CB (NECB), start or trip action of a protection relay on the NECB, and alarm status of the CB. For the diagnostic system input variables, data from the SCADA system, along with transformer and line protection devices, are used to allow the proper formation of rules and ultimately to determine the diagnostic status of the CB. The proposed method is tested on an authentic test power system, and the outcome results are compared with a previously reported technique. The obtained test results and the comparison prove the efficiency, authenticity, and fast operation feature of the suggested strategy.

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Section: Introductionmentioning

confidence: 99%

Real-Time Circuit Breaker Availability Assessment in the Transmission Network

Petrović¹,

Glavaš

Noskov³

et al. 2021

Applied Sciences

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“…Functions of fault locations and basic methods for determining fault locations in transmission grid are described [11,13]. The overview of specific factors which affect fault locations is often shown [2,10,17].…”

Section: Introductionmentioning

confidence: 99%

Use of Fuzzy Logic Systems for Assessment of Primary Faults

Petrović¹,

Józsa

Baus

2015

Journal of Electrical Engineering

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In electric power systems, grid elements are often subjected to very complex and demanding disturbances or dangerous operating conditions. Determining initial fault or cause of those states is a difficult task. When fault occurs, often it is an imperative to disconnect affected grid element from the grid. This paper contains an overview of possibilities for using fuzzy logic in an assessment of primary faults in the transmission grid. The tool for this task is SCADA system, which is based on information of currents, voltages, events of protection devices and status of circuit breakers in the grid. The function model described with the membership function and fuzzy logic systems will be presented in the paper. For input data, diagnostics system uses information of protection devices tripping, states of circuit breakers and measurements of currents and voltages before and after faults.K e y w o r d s: fuzzy logic, primary faults, transmission grid Nomenclature |∆I| -absolute value of current change sensitivity I t -current after the event

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Missing value imputation using a novel grey based fuzzy c-means, mutual information based feature selection, and regression model

Sefidian

Daneshpour

2019

Expert Systems with Applications

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An analysis on the use of pre-processing methods in evolutionary fuzzy systems for subgroup discovery

Cited by 6 publications

References 45 publications

Real-Time Circuit Breaker Availability Assessment in the Transmission Network

Real-Time Circuit Breaker Availability Assessment in the Transmission Network

Use of Fuzzy Logic Systems for Assessment of Primary Faults

Missing value imputation using a novel grey based fuzzy c-means, mutual information based feature selection, and regression model

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