研究者詳細 - 小迫　雅裕

論文 - 小迫　雅裕

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Observation of Changes in Partial Discharge Activity in Artificial Voids Based on Analysis of Φ-q-n Characteristics and Light 査読有り国際誌

Y.Aoki, Y.Takeuchi, T.Sakakihara, K.Iida, T.Umemura, M.Kozako

2023 International Symposium on Electrical Insulating Materials (ISEIM) ( P-8 ) 2023年09月

Application of Power Line Communication for Online Partial Discharge Monitoring in A Simulated Substation 査読有り国際誌

Lunnetta Safura Lumba, Akito Houdai, Masahiro Kozako, Masayuki Hikita, Hidefumi Sato, Masahiro Soeda

The 23rd International Symposium on High Voltage Engineering(ISH2023) ( O7.1.05 ) 2023年08月

Effect of Electric Field on Conductivity of Synthetic Ester 査読有り国際誌

Rui Yu, Shanika Matharage, Daigo Rui Yu, Shanika Matharage, Daigo Okumura, Motoo Tsuchie, Masahiro Kozako, Masayuki Hikita, Zhongdong Wang

The 23rd International Symposium on High Voltage Engineering(ISH2023) ( O10.1.06 ) 2023年08月

Partial Discharge Characteristics to Breakdown in Cast Resin Transformer Suffering Lightning Impulses to Accelerate Aging 査読有り国際誌

Y.Yao, M.Miyagawa, R.Koresawa, M.Kozako, M.Hikita, K.Takei, T.Shibata, T.Uzuki, K.Futakawa

The 23rd International Symposium on High Voltage Engineering(ISH2023) ( O8.1.05 ) 2023年08月

Long-Term AC Partial Discharge Characteristics of A 22 kV Cast Resin Transformer in Accelerated Tests 査読有り国際誌

M.Miyagawa1, Y.Yao, R.Koresawa, H.Kawano, M.Hikita, M.Kozako, K.Takei, T.Shibata, T.Uzuki, K.Futakawa

The 23rd International Symposium on High Voltage Engineering(ISH2023) ( O8.1.04 ) 2023年08月

Effect of Moisture Content on Temperature Characteristics of Dielectric Breakdown Strength of Biodegradable Ester Oils 査読有り

T.Okamoto, D.Okumura, K.Hamasuna, M.Kozako, M.Hikita, M.Tsuchie, M.Maharana, C.Olmo

22nd IEEE International Conference on Dielectric Liquids (ICDL2023) ( 191 ) 2023年06月

Impact of Thermal Aging on The Conductivity of Kraft Paper Impregnated with Mineral Oil and Synthetic Ester 査読有り

T.Okamoto, D.Okumura, K.Hamasuna, M.Kozako, M.Hikita, M.Tsuchie, M.Maharana, C.Olmo

22nd IEEE International Conference on Dielectric Liquids (ICDL2023) ( 196 ) 2023年06月

Partial Discharge Characteristic Analysis in a 6.6 kV Cast Resin Voltage Transformer Using High-Frequency Distributed Constant Equivalent Circuits 査読有り

R.Koresawa, M.Kozako, M.Hikita, Y.Aoki, K.Iida, T.Umemura, D.Ito, K.Oyama, T.Nakamae, T.Maeda, T.Ozaki

2023 Electrical Insulation Conference (EIC) 87 - 91 2023年06月

Proposal for Evaluation of Insulation Performance by Partial Discharge Characteristics of Resin Substrates Containing Micro-Sized Multiple Voids 査読有り

D.Okumura, T.Okamoto, M.Kozako, M.Hikita

2023 Electrical Insulation Conference (EIC) 121 - 124 2023年06月

Application of ANFIS and ANN for Partial Discharge Localization in Oil Through Acoustic Emission 査読有り国際誌

Hashim A.H.M., Azis N., Jasni J., Radzi M.A.M., Kozako M., Jamil M.K.M., Yaakub Z.(プトラ大学・マレーシア）

IEEE Transactions on Dielectrics and Electrical Insulation ( The IEEE Dielectrics and Electrical Insulation society ) 30 ( 3 ) 1247 - 1254 2023年06月

記述言語：英語掲載種別：研究論文（学術雑誌）

This article presents an examination on the acoustic partial discharge (PD) localization in oil based on adaptive neuro-fuzzy inference system (ANFIS) and artificial neural network (ANN) approaches. Impedance matching circuit (IMC) was used to measure the electrical PD. The acoustic PD was obtained through an acoustic emission (AE) sensor and preamplifier gain unit. In total, 112 coordinates for each of the AE sensors were utilized to evaluate the location of the PD. Once the voltage reached 30 kV, the electrical and acoustic PDs were recorded. Next, the data were preprocessed by moving average (MA) and analyzed by time of arrival (TOA), ANFIS, and ANN. The distance between PD and AE sensor was calculated based on TOA to determine the PD location. These information were used as an input to train the network by optimizing epoch and neuron for ANFIS and ANN in order to locate PD. ANFIS has the best percentage of PD source prediction based on root mean square error (RMSE) and coefficient of determination (R2) as compared to ANN. Meanwhile, the computation time for ANN is 1.75 s faster than ANFIS to perform PD localization based on AE PD signals.

DOI： 10.1109/TDEI.2023.3264958

Scopus

その他リンク： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85153388374&origin=inward

Enhancement of Electrical Insulation Performance using FGM Techniques in Air Insulated HV GIS 査読有り国際誌

K.Okamoto, H.Masui, H.Yanase, N.Hayakawa, K.Kato, H.Okubo, M.Kozako, N.Osawa, T.Inoue, K.Adachi

Joint CIGRE SC B3 & A3 Colloquium 2023 ( PS3 ) 2023年05月

鉱油中における熱および課電加速劣化したポリビニルホルマール線の絶縁特性査読有り

善田優希, 小迫雅裕, 匹田政幸, 大久保祐輔, 下村好亮, 田中剛

電気学会論文誌A 143 ( 3 ) 98 - 104 2023年03月

Online and Offline Partial Discharge Measurement in Rotating Machines using Transient Earth Voltage Sensors 査読有り国際誌

Lunnetta Safura Lumba, Akito Houdai, Ryota Koresawa, Tsutomu Kuno, Masahiro Kozako, Masayuki Hikita, Kenta Yonemura

9th International Conference on Condition Monitoring and Diagnosis (CMD2022) ( B1-3 ) 2022年11月

AC Partial Discharge Measurements of Aged Cast Resin Transformers after Multiple Impulse Voltage Applications 査読有り国際誌

Y.Yao, M.Kozako, R.Koresawa, H.Kawano, M.Hikita, K.Takei, M.Sato, K.Futakawa, H.Sato

9th International Conference on Condition Monitoring and Diagnosis (CMD2022) ( P4-25 ) 2022年11月

Investigation of saturation moisture in the PD behavior in the biodegradable ester oil 査読有り国際誌

M.Maharana, K.Hamasuna, M.Kozako, M.Hikita, M.Tsuchie, K.Wu

9th International Conference on Condition Monitoring and Diagnosis (CMD2022) ( P4-12 ) 2022年11月

Partial Discharge Degradation Analysis from Light Emission Observation and Partial Discharge Characteristic Measurement by Partial Discharge in Artificial Defects Using 査読有り国際誌

Y.Aoki, Y.Takeuchi, T.Sakakihara, K.Ida, T.Umemura, M.Kozako, M.Hikita, T.Nakamae, T.Maeda, T.Ozaki

9th International Conference on Condition Monitoring and Diagnosis (CMD2022) ( P3-25 ) 2022年11月

A Study of PRPD Statistics to Improve the Performance of PD Detection and Defect Type Identification 査読有り国際誌

R.Kai, T.Yamanoue, H.Tanaka, H.Kawano, M.Kozako, M.Hikita

9th International Conference on Condition Monitoring and Diagnosis (CMD2022) ( P3-24 ) 2022年11月

Investigation on Dominant Frequency of Partial Discharge Current in 6.6 kV Cast Resin Voltage Transformer 査読有り国際誌

R.Koresawa, M.Kozako, M.Hikita, Y.Aoki, K.Iida, T.Umemura, T.Nakamae, T.Maeda, T.Ozaki

9th International Conference on Condition Monitoring and Diagnosis (CMD2022) ( P3-21 ) 2022年11月

Long term on-line PD monitoring using power line communication in a distribution substation 査読有り国際誌

A.Houdai, Lunnetta Safura Lumba, T.Wakisaka, M.Kozako, M.Hikita, H.Sato, M.Soeda

9th International Conference on Condition Monitoring and Diagnosis (CMD2022) ( P3-20 ) 2022年11月

Investigation of Microvoid Detection in Insulating Resin Substrates Based on Partial Discharge Characteristics 査読有り国際誌

K.Hamasuna, D.Okumura, M.Kozako, M.Hikita

9th International Conference on Condition Monitoring and Diagnosis (CMD2022) ( P3-17 ) 2022年11月

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