An improved methodology for evaluation of lightning effects on distribution networks

Küster, Kristie Kaminski; Santos, Signie L. F.; Ravaglio, Marcelo A.; Toledo, Luiz Felipe Ribeiro Barrozo; Piantini, Alexandre; Lazzaretti, André E.; Mello, Luciana Gonçalves de; Pinto, Cleverson L. S.

doi:10.1109/sipda.2017.8116934

Cited by 5 publications

(3 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…According to [42], the power utility of Paraná State, Brazil (COPEL), presented an annual failure rate of 1.2% in distribution transformers, where electric discharges caused 30% of these occurrences.…”

Section: Resultsmentioning

confidence: 99%

Power Distribution Systems’ Vulnerability by Regions Caused by Electrical Discharges

Santos,

Faria,

Lopes

et al. 2023

Energies

View full text Add to dashboard Cite

Energy supply interruptions or blackouts caused by faults in power distribution feeders entail several damages to power utilities and consumer units: financial losses, damage to power distribution reliability, power quality deterioration, etc. Most studies in the specialized literature concerning faults in power distribution systems present methodologies for detecting, classifying, and locating faults after their occurrence. In contrast, the main aim of this study is to prevent faults by estimating the city regions whose power grid is most vulnerable to them. In this sense, this work incorporates a geographical-space study via a spatial data analysis using the local variable electrical discharge density that can increase fault risks. A geographically weighted spatial analysis is applied to data aggregated by regions to produce thematic maps with the city regions whose feeders are more vulnerable to failures. The spatial data analysis is implemented in QGIS and R programming environments. It is applied to the real data of faults in distribution power grid transformers and electrical discharges in a medium-sized city with approximately 200,000 inhabitants. In this study, we highlight a moderate positive correlation between electrical discharge density and the percentage of faults in transformers by regions in the central and western areas of the city under study.

show abstract

Section: Resultsmentioning

confidence: 99%

Power Distribution Systems’ Vulnerability by Regions Caused by Electrical Discharges

Santos,

Faria,

Lopes

et al. 2023

Energies

View full text Add to dashboard Cite

show abstract

“…In addition, there are several advantages that monitoring provides through data collected in the field, such as: extending the life of a transformer; better planning for grid expansions or the insertion of new technologies (photovoltaics, recharging of electric vehicles, etc. ); better quality of the supplied energy; reduction of accidents and its severity; and reduction in the time of identification and location of the fault [1,9,[20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Application Study in the Field of Solutions for the Monitoring Distribution Transformers of the Overhead Power Grid

Chaves

Martins

Martins³

et al. 2021

Energies

View full text Add to dashboard Cite

This paper will present the development and application of overhead transformers of the distribution grid, as well as the different technologies used for the gathering of electrical quantities, in the field of a monitoring solution. The solution reports the values of the quantities and alarms of operation remotely and almost in real-time. The development of this solution seeks to provide an electrical grid with greater reliability, proposing the reduction of KPIs (Key Performance Indicator), such as SAIDI (System Average Interruption Duration Index) and SAIFI (System Average Interruption Frequency Index), through more transparent monitoring of the behavior of the electrical distribution grid and its equipment. Through the research and development (R&D) project Urban Futurability, ENEL (Ente nazionale per l’energia elettrica) Distribution São Paulo seeks to apply the solution by implementing the concept of smart grids, an idea that has been growing each year by virtue of technological developments and the employment of new sensors in electrical distribution grids. Urban Futurability seeks to innovate the automation area, digital twin, and construction enhancement in the Vila Olímpia neighborhood of São Paulo, Brazil.

show abstract

“…O número de turbinas eólicas, sua distribuição entre os circuitos, tipos de redes coletoras (aéreas ou subterrâneas) e perdas associadas aos tipos de condutores empregados, tipos de arranjos de subestações coletoras e barramentos, quantidade de equipamentos associados, tais como transformadores elevadores, escolha do ponto de acoplamento à rede, são exemplos de algumas das considerações que devem ser validadas pelos estudos de Engenharia (CAMM et al, 2009ab). KÜSTER et al, 2017).…”

Section: Aneelunclassified

Avaliação da coordenação de isolamento em redes de média tensão de parques eólicos frente descargas atmosféricas.

Lopes¹

View full text Add to dashboard Cite

show abstract

An improved methodology for evaluation of lightning effects on distribution networks

Cited by 5 publications

References 15 publications

Power Distribution Systems’ Vulnerability by Regions Caused by Electrical Discharges

Power Distribution Systems’ Vulnerability by Regions Caused by Electrical Discharges

Application Study in the Field of Solutions for the Monitoring Distribution Transformers of the Overhead Power Grid

Avaliação da coordenação de isolamento em redes de média tensão de parques eólicos frente descargas atmosféricas.

Contact Info

Product

Resources

About