Sensitivity analysis of the surge test applied to AC machines

The surge test is a well-known offline method to determine the integrity of the turn-to-turn insulation of coils as they are found in transformers or induction machines. There are different methods used to evaluate the waveform obtained during the surge test. These methods include the examination of the zero crossings of the waveform, i.e., its ringing frequency, the differential error area ratio (EAR) also known as the pulse-to-pulse EAR (P-P EAR) or a corona evaluation. A semi-analytical derivation of the P-P EAR under healthy and faulty conditions as well as a definition of the frequency and EAR sensitivity is given in this paper to gain more insight into the evaluation of the ringing frequency and the P-P EAR. The derivations shown in this paper are supported by simulations and experimental results.

[1]  Chanan Singh,et al.  Report of Large Motor Reliability Survey of Industrial and Commercial Installations, Part II , 1985, IEEE Transactions on Industry Applications.

[2]  G.C. Stone,et al.  Which inverter drives need upgraded motor stator windings , 2000, Record of Conference Papers. Industry Applications Society Forty-Seventh Annual Conference. 2000 Petroleum and Chemical Industry Technical Conference (Cat. No.00CH37112).

[3]  E. Wiedenbrug,et al.  Impulse testing as a predictive maintenance tool , 2003, 4th IEEE International Symposium on Diagnostics for Electric Machines, Power Electronics and Drives, 2003. SDEMPED 2003..

[4]  Thomas G. Habetler,et al.  A Survey on Testing and Monitoring Methods for Stator Insulation Systems of Low-Voltage Induction Machines Focusing on Turn Insulation Problems , 2008, IEEE Transactions on Industrial Electronics.

[5]  M. Dalva,et al.  A survey of faults on induction motors in offshore oil industry, petrochemical industry, gas terminals and oil refineries , 1994, Proceedings of IEEE Petroleum and Chemical Industry Technical Conference (PCIC '94).

[6]  Gary L. Skibinski,et al.  Effect of surge voltage risetime on the insulation of low voltage machines fed by PWM converters , 1997, IAS '97. Conference Record of the 1997 IEEE Industry Applications Conference Thirty-Second IAS Annual Meeting.

[7]  M. E. H. Benbouzid,et al.  What Stator Current Processing Based Technique to Use for Induction Motor Rotor Faults Diagnosis , 2002, IEEE Power Engineering Review.

[8]  S. J. Yang,et al.  The influence of coil and surge parameters on transient interturn voltage distribution in stator windings , 1983 .

[9]  Thomas G. Habetler,et al.  Transient model for induction machines with stator winding turn faults , 2000, Conference Record of the 2000 IEEE Industry Applications Conference. Thirty-Fifth IAS Annual Meeting and World Conference on Industrial Applications of Electrical Energy (Cat. No.00CH37129).

[10]  E. Wiedenbrug,et al.  Impulse testing and turn insulation deterioration in electric motors , 2003, Conference Record of the 2003 Annual Pulp and Paper Industry Technical Conference, 2003..

[11]  Howard W. Penrose.  Test Methods for Determining the Impact of Motor Condition on Motor Efficiency and Reliability , 2001 .

[12]  Fiorenzo Filippetti,et al.  Recent developments of induction motor drives fault diagnosis using AI techniques , 2000, IEEE Trans. Ind. Electron..

[13]  D. K. Sharma,et al.  Measurement and Analysis of Surge Distribution in Motor Stator Windings , 1989, IEEE Power Engineering Review.

[14]  G.C. Stone,et al.  Electrical insulation for rotating machines-design, evaluation, aging, testing, and repair - Book Review , 2004, IEEE Electrical Insulation Magazine.

[15]  D. K. Sharma,et al.  Degradation of turn insulation in motor coils under repetitive surges , 1990 .

[16]  P. F. Albrecht,et al.  Improved motors for utility applications , 1982 .

[17]  Ye Zhongming,et al.  A review on induction motor online fault diagnosis , 2000, Proceedings IPEMC 2000. Third International Power Electronics and Motion Control Conference (IEEE Cat. No.00EX435).

[18]  Mohamed Benbouzid,et al.  Bibliography on induction motors faults detection and diagnosis , 1999 .

[19]  B. Gupta.  Risk in surge testing of turn insulation in windings of rotating machines , 2003, Proceedings: Electrical Insulation Conference and Electrical Manufacturing and Coil Winding Technology Conference (Cat. No.03CH37480).

[20]  Thomas G. Habetler,et al.  A new concept for online surge testing for the detection of winding insulation deterioration , 2010, 2010 IEEE Energy Conversion Congress and Exposition.

[21]  S. Schlichting.  Automated digital winding test analysis methods , 1993, Proceedings of Electrical/Electronics Insulation Conference.

[22]  Hamid A. Toliyat,et al.  Condition monitoring and fault diagnosis of electrical machines-a review , 1999, Conference Record of the 1999 IEEE Industry Applications Conference. Thirty-Forth IAS Annual Meeting (Cat. No.99CH36370).

[23]  Bin Lu,et al.  Investigation on surge testing for winding insulation fault detection in an online environment , 2009, 2009 IEEE Energy Conversion Congress and Exposition.

[24]  G. Stone,et al.  Electrical Insulation for Rotating Machines , 2003 .