TY - GEN
T1 - An Assessment of Failure Rate of Pole-Mounted Transformers Using Probabilistic Risk Evaluation of Lightning Arresters
AU - Koalane, Ntaoleng P.
AU - Bokoro, Pitshou N.
N1 - Publisher Copyright:
© 2022 IEEE.
PY - 2022
Y1 - 2022
N2 - In this study, the probabilistic risk evaluation of surge arresters is conducted in order to assess protection effectiveness of PMTs against lightning strikes. An 11 kV distribution line located in Arabel Platkoppie-a district area in Johannes-burg, South Africa-which experienced 59% of PMT failure due to lightning between 2017 and 2019, is used as a case-study. Statistical data related to lightning activities around the Arabel Platkoppie area were souced from FALLS. EMTP-RV Simulation results of direct effect of lightning strikes were used. The risk evaluation of lightning arrester, committed to the protection of PMTs, is then assessed using probabilistic failure evaluation. Resuts show that with the frequency of lightning activity recorded in the Arabel Platkoppie area, the annual outage rate is estimated to be 0.1694 outage/100 km/year, which translates to the expected average surge arrester life of 5.8 years.
AB - In this study, the probabilistic risk evaluation of surge arresters is conducted in order to assess protection effectiveness of PMTs against lightning strikes. An 11 kV distribution line located in Arabel Platkoppie-a district area in Johannes-burg, South Africa-which experienced 59% of PMT failure due to lightning between 2017 and 2019, is used as a case-study. Statistical data related to lightning activities around the Arabel Platkoppie area were souced from FALLS. EMTP-RV Simulation results of direct effect of lightning strikes were used. The risk evaluation of lightning arrester, committed to the protection of PMTs, is then assessed using probabilistic failure evaluation. Resuts show that with the frequency of lightning activity recorded in the Arabel Platkoppie area, the annual outage rate is estimated to be 0.1694 outage/100 km/year, which translates to the expected average surge arrester life of 5.8 years.
KW - arrester risk of failure
KW - EMPT-RV
KW - FALLS
KW - lightning strike
KW - Pole-mounted transformer
KW - probabilistic evaluation
UR - http://www.scopus.com/inward/record.url?scp=85143910792&partnerID=8YFLogxK
U2 - 10.1109/IECON49645.2022.9968529
DO - 10.1109/IECON49645.2022.9968529
M3 - Conference contribution
AN - SCOPUS:85143910792
T3 - IECON Proceedings (Industrial Electronics Conference)
BT - IECON 2022 - 48th Annual Conference of the IEEE Industrial Electronics Society
PB - IEEE Computer Society
T2 - 48th Annual Conference of the IEEE Industrial Electronics Society, IECON 2022
Y2 - 17 October 2022 through 20 October 2022
ER -
