Výsledky vyhledávání - "Manjula Fernando"

Akademický článek

Modeling and Assessment of Lightning Hazards to Humans in Heritage Monuments in India and Sri Lanka

Autor: Venkatesh Srinivasan, Manjula Fernando, Sarath Kumara, Thirumalini Selvaraj, Vernon Cooray

Publikováno v: IEEE Access, Vol 8, Pp 228032-228048 (2020)

Lightning is one of the inevitable disastrous phenomena which in addition to damaging tall edifices, might also consequently endanger humans due to lightning-human interactions. This research focuses on analyzing lightning hazards to humans in the vi

Externí odkaz: https://doaj.org/article/40116356a8ae42838f3e27d106495666

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Condition assessment of 132/220 kV oil-paper current transformers in Sri Lanka

Autor: D. S. Daulagala, A. P. Bandara, Sarath Kumara, T. N. Aravinda, P. Nandasena, Kapila Bandara, Manjula Fernando, G. A. Jayantha

Publikováno v: IEEE Electrical Insulation Magazine. 36:21-30

Current transformers (CTs) are extensively used in electrical switchyards and substations for metering and protection purposes [1] and are expected to operate properly for at least 30 years [2]. Normally, aging of CTs under service conditions is rela

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5b9ad1b785115979cf7a49890cf28194
https://doi.org/10.1109/mei.2020.9222631

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Field verification of a novel and simple partial discharge detection method for generator applications

Autor: Gawasinghe A. Jayanatha, Sarath Kumara, Manjula Fernando, Thathsara Herath, Kapila Bandara, Janaka Wijayakulasooriya

Publikováno v: IET Science, Measurement & Technology. 14:835-843

This study introduces a simple and novel partial discharge (PD) detection method for generator condition monitoring applications. The proposed method uses statistical operator ‘Variance’ which is proportional to the power of an electrical signal.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::75c0cfeb367043d9de642d2e9ee82b8e
https://doi.org/10.1049/iet-smt.2018.5631

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Performance of outdoor insulators in tropical conditions of Sri Lanka

Autor: Manjula Fernando, Sarath Kumara

Publikováno v: IEEE Electrical Insulation Magazine. 36:26-35

Ceramic insulators, specifically porcelain and glass insulators, have widely been used all over the world since the 19th century [1,2]. However, when such insulators are energized and exposed to different pollution environments under different climat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b16d897871d795a121774821cc6158ee
https://doi.org/10.1109/mei.2020.9111097

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A Machine Learning Approach for FDS Based Power Transformer Moisture Estimation

Autor: Tharaka Wijethunge, Pawara Tharkana, Amila Wimalaweera, Janaka Wijayakulasooriya, Sarath Kumara, Kapila Bandara, Manjula Fernando

Publikováno v: 2021 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP).

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::bef1d3f1a83eeb7526dc92aa973d8cfb
https://doi.org/10.1109/ceidp50766.2021.9705366

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Reflectance Multispectral Imaging for Identification of Algae Contamination in High Voltage Insulators

Autor: G. W. K. Prabhath, Manjula Fernando, Sarangi N. P. Athukorala, H.M.H.K. Weerasooriya, M. P. B. Ekanayake, G. M. R. I. Godaliyadda, Sarath Kumara, H. M. V. R. Herath, R.M.L.S. Ramanayake, J.M.V.D.B. Jayasundara, H.M.N.B. Senarath

Publikováno v: OSA Imaging and Applied Optics Congress 2021 (3D, COSI, DH, ISA, pcAOP).

An algorithm to identify the algal contamination in high voltage insulators using Bhattacharyya distance, through Ultraviolet-Visible-Near Infrared multispectral images obtained utilizing an in-house developed multispectral imaging system.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e773038cc2ae9896dd58cfad80fd5017
https://doi.org/10.1364/isa.2021.ith1b.6

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Response of Organic Lime Mortars to Thermal and Electrical Shocks Due to Lightning Strikes

Autor: Manjula Fernando, Kunal Kakria, Simona Raneri, Venkatesh Srinivasan, Thirumalini Selvaraj, Simon Jayasingh

Publikováno v: Sustainability
Volume 12
Issue 17
Sustainability (Basel) 12 (2020). doi:10.3390/su12177181
info:cnr-pdr/source/autori:Selvaraj T.; Srinivasan V.; Raneri S.; Fernando M.; Kakria K.; Jayasingh S./titolo:Response of organic lime mortars to thermal and electrical shocks due to lightning strikes/doi:10.3390%2Fsu12177181/rivista:Sustainability (Basel)/anno:2020/pagina_da:/pagina_a:/intervallo_pagine:/volume:12
Sustainability, Vol 12, Iss 7181, p 7181 (2020)

Lightning strikes are prevalent and inevitable natural phenomena that might cause damages during interaction with building structures and, in some cases, culminate in fires. During the last decades, several lightning strikes have caused considerable

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d3fbcf6c75a86321b96bca3d605943c9

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Prony Algorithm for Noise Filteration in Partial Discharge Signals Captured by High Frequency Current Transducer

Autor: Sarath Kumara, Udathari Medagoda, Bhagya Swarnasinghe, Manjula Fernando, Kavindya Dissanayake, Janaka Wijayakulasooriya

Publikováno v: 2020 IEEE 3rd International Conference on Dielectrics (ICD).

This paper presents application of Prony algorithm for de-nosing of partial discharge (PD) signals captured using a high frequency current transducer (HFCT). A laboratory setup was developed to generate individual and mixed PDs due to corona, surface

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9fab30cd5674c36162f1b655f25f6c11
https://doi.org/10.1109/icd46958.2020.9341965

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Modeling and Assessment of Lightning Hazards to Humans in Heritage Monuments in India and Sri Lanka

Autor: Manjula Fernando, Sarath Kumara, Thirumalini Selvaraj, Venkatesh Srinivasan, Vernon Cooray

Publikováno v: IEEE Access, Vol 8, Pp 228032-228048 (2020)

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::12d089f277ff07240e4d8d2fe5730cda
http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-433625

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Aging assesment of transformer pressboard insulation by micro-strip ring resonator at GHz frequencies

Autor: J.R.S.S. Kumara, A. U. A. W. Gunawardena, W. M. S. C. Samarasinghe, Manjula Fernando

Publikováno v: IEEE Transactions on Dielectrics and Electrical Insulation. 24:1923-1930

Condition assessment of insulation is widely used to identify the state of aging of power transformers. Traditionally, condition assessment is done using dielectric response measurements conducted at low frequencies. However, due to long testing time

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a96f7271268df8802a3a53c9ea18137e
https://doi.org/10.1109/tdei.2017.006322

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