Pressure-Related Creepage Discharge Characteristics for a 220-kV Superconducting Fault Current Limiter

Jeong, Minkyung; Eliana, Bella; Kang, Hyoungku

doi:10.1109/tasc.2020.2974452

Cited by 3 publications

(2 citation statements)

References 7 publications

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“…The resulting breakdown stress data were subsequently subjected to analysis using the Weibull distribution. In the context of the Weibull distribution, the probability value of 63.2% holds particular significance as it signifies the point at which the shape and scale parameters are equal [10]. This value is instrumental in estimating the reliability and distribution parameters of the breakdown voltage.…”

Section: Breakdown Voltage Analysismentioning

confidence: 99%

Influence of thermal aging on dielectric characteristics of transformer insulating oils

Saodah,

Eliana,

Jakariya

2024

E3S Web of Conf.

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Transformer oil is a liquid insulating material used in transformers as insulation and coolant. Particular characteristics insulating oil materials must be able to withstand breakdown voltages, while transformer oil as a coolant must be able to minimize heat generated, so that transformer oil is expected to protect the transformer from disturbances with these two characteristics. In order to reduce the percentage of transformer failures, it is necessary to maintain the purity of the oil. The features of aged transformer oil and pure transformer oil are investigated in this study. Pure transformer oil is heated to a particular temperature and cycled to create samples of aged transformer oil. The electric field intensity of transformer oil is measured to estimate the dielectric strength of aged transformer oil. FEM analysis is used to determine the intensity of an electric field. At aging temperatures of 130°C and 150°C, the dielectric characteristics of transformer oil for both Shell Diala and Triapar types are investigated. As a result, not only the electrical characteristics but also the effects of thermal aging on the physical and chemical properties of transformer oil are reported in this study.

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Section: Breakdown Voltage Analysismentioning

confidence: 99%

Influence of thermal aging on dielectric characteristics of transformer insulating oils

Saodah,

Eliana,

Jakariya

2024

E3S Web of Conf.

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“…Percobaan diulang 6 kali dalam kondisi yang sama dan data tegangan tembus dengan mengecualikan data ekstrim diambil untuk kemudian dianalisis dengan menggunakan distribusi Weibull. Dalam distribusi Weibull, nilai probabilitas 63,2% mewakili titik dimana parameter bentuk dan skala sama [12]. Nilai tegangan tembus dengan probabilitas 63,2% digunakan untuk memperkirakan keandalan dan parameter distribusi.…”

Section: Hasil Dan Pembahasan 31 Percobaan Tegangan Tembus Pada Minya...unclassified

Studi pengaruh penuaan minyak trafo terhadap karakteristik dielektrik

Saodah,

Eliana,

Jakariya

2023

JITEL

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Trafo adalah peralatan penting dalam transmisi tenaga listrik. Berbagai jenis bahan insulasi yang digunakan dalam transformator diantaranya minyak mineral atau minyak transformator digunakan untuk insulasi. Dalam upaya mengurangi persentase kegagalan transformator, perlu untuk menjaga kemurnian minyak. Pada penelitian ini menyelidiki karakteristik dielektrik minyak transformator yang telah menglami penuaan dan minyak transformator murni. Sampel minyak trafo yang mengalami penuaan dibuat dengan menggunakan minyak transformator murni yang dipanaskan pada suhu tertentu dan dalam siklus yang telah ditentukan. Electric field intensity minyak trafo diidentifikasi untuk melihat dielectric strength dari minyak trafo yang mengalami penuaan. Dalam mengidentifikasi electric field intensity, analisis FEM dilakukan. Hasil penelitian menunjukkan bahwa dielectric strength minyak trafo baik pada tipe Shell Diala maupun Triapar mengalami degradasi sekitar 20% dan 40% pada suhu penuaan 130 °C dan 150 °C secara berurutan pada penerapan tegangan AC. Dengan begitu, pemberian tekanan thermal memengaruhi sifat dielektrik dari minyak trafo.

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Evaluation of Selection Criteria for the Level of Liquid Nitrogen in HTS Magnet System

Bang

Lee

Kim

et al. 2022

IEEE Trans. Appl. Supercond.

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Pressure-Related Creepage Discharge Characteristics for a 220-kV Superconducting Fault Current Limiter

Cited by 3 publications

References 7 publications

Influence of thermal aging on dielectric characteristics of transformer insulating oils

Influence of thermal aging on dielectric characteristics of transformer insulating oils

Studi pengaruh penuaan minyak trafo terhadap karakteristik dielektrik

Evaluation of Selection Criteria for the Level of Liquid Nitrogen in HTS Magnet System

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