TY - GEN
T1 - Experience with stator insulation testing and turn/phase insulation failures in the power generation industry
AU - Kim, H.
AU - Kong, T.
AU - Lee, S. B.
AU - Kang, T. J.
AU - Oh, N.
AU - Kim, Y.
AU - Park, S.
AU - Stone, G. C.
N1 - Funding Information:
This work was supported by “Human Resources program in Energy Technology” of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) granted financial resource from the Ministry of Trade, Industry & Energy, Republic of Korea (No. 20154030200610)
Publisher Copyright:
© 2017 IEEE.
PY - 2017/10/6
Y1 - 2017/10/6
N2 - The reliability of medium voltage (MV) motors used for driving pumps, fans, and other loads in the power generation industry is critical for continued power production. Periodic testing of stator winding insulation, which is the most vulnerable component in MV motors, is an essential part of predictive maintenance for preventing unplanned reduction in the power generation capability. Korea Electric Power Corporation (KEPCO) Research Institute's 17+ years of experience on predictive maintenance of stator insulation for MV motors is presented in this paper. KEPCO's stator insulation test program and statistics of test records are summarized, and cases of recent turn and phase insulation failures that resulted in motor forced outages are investigated. Analysis of the turn or phase insulation failures and insulation test records performed on the failed motors show that it is difficult to predict turn or phase insulation failures with the insulation tests currently performed. Turn or phase insulation test methods are summarized and evaluated based on the findings of the investigation to help target future research efforts towards industrial needs.
AB - The reliability of medium voltage (MV) motors used for driving pumps, fans, and other loads in the power generation industry is critical for continued power production. Periodic testing of stator winding insulation, which is the most vulnerable component in MV motors, is an essential part of predictive maintenance for preventing unplanned reduction in the power generation capability. Korea Electric Power Corporation (KEPCO) Research Institute's 17+ years of experience on predictive maintenance of stator insulation for MV motors is presented in this paper. KEPCO's stator insulation test program and statistics of test records are summarized, and cases of recent turn and phase insulation failures that resulted in motor forced outages are investigated. Analysis of the turn or phase insulation failures and insulation test records performed on the failed motors show that it is difficult to predict turn or phase insulation failures with the insulation tests currently performed. Turn or phase insulation test methods are summarized and evaluated based on the findings of the investigation to help target future research efforts towards industrial needs.
KW - AC Machines
KW - Phase Insulation
KW - Predictive Maintenance
KW - Stator Insulation Testing
KW - Turn Insulation
UR - http://www.scopus.com/inward/record.url?scp=85047167257&partnerID=8YFLogxK
U2 - 10.1109/DEMPED.2017.8062329
DO - 10.1109/DEMPED.2017.8062329
M3 - Conference contribution
AN - SCOPUS:85047167257
T3 - Proceedings of the 2017 IEEE 11th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives, SDEMPED 2017
SP - 21
EP - 30
BT - Proceedings of the 2017 IEEE 11th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives, SDEMPED 2017
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 11th IEEE International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives, SDEMPED 2017
Y2 - 29 August 2017 through 1 September 2017
ER -