TY - GEN
T1 - Time Transition of Conductivity Distribution in Air by DC Partial Discharge for Air-solid Composite Insulation Systems
AU - Nakane, R.
AU - Kojima, H.
AU - Suehiro, J.
AU - Okubo, H.
AU - Hayakawa, N.
N1 - Publisher Copyright:
© 2020 IEEE.
PY - 2020/10/18
Y1 - 2020/10/18
N2 - Toward the development of HVDC power apparatus, we investigate the charging process on solid insulator in terms of the time transition of conductivity distribution in air for air-solid composite insulation system from DC-on to DC steady-state. By using needle-air-PMMA-plane electrode configuration, we measure the time evolution of surface potential on PMMA due to partial discharge at the needle tip under negative DC voltage. We compare the measured surface potential distribution with the simulation result considering the charge behavior in air. Especially, a novel simulation model considering the charge supply due to DC partial discharge is built. As a result, in air-solid composite insulation system under negative DC application, the time transition of conductivity distribution in air corresponding to the charge accumulation is evaluated quantitatively.
AB - Toward the development of HVDC power apparatus, we investigate the charging process on solid insulator in terms of the time transition of conductivity distribution in air for air-solid composite insulation system from DC-on to DC steady-state. By using needle-air-PMMA-plane electrode configuration, we measure the time evolution of surface potential on PMMA due to partial discharge at the needle tip under negative DC voltage. We compare the measured surface potential distribution with the simulation result considering the charge behavior in air. Especially, a novel simulation model considering the charge supply due to DC partial discharge is built. As a result, in air-solid composite insulation system under negative DC application, the time transition of conductivity distribution in air corresponding to the charge accumulation is evaluated quantitatively.
UR - http://www.scopus.com/inward/record.url?scp=85107208578&partnerID=8YFLogxK
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U2 - 10.1109/CEIDP49254.2020.9437492
DO - 10.1109/CEIDP49254.2020.9437492
M3 - Conference contribution
AN - SCOPUS:85107208578
T3 - Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP
SP - 55
EP - 58
BT - CEIDP 2020 - 2020 IEEE Conference on Electrical Insulation and Dielectric Phenomena
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2020 IEEE Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2020
Y2 - 18 October 2020 through 30 October 2020
ER -