IEEE Std ™). IEEE Recommended Practice for. Insulation Testing of AC Electric. Machinery ( V and Above). With High Direct. IEEE Std 95 () IEEE Recommended Practice for Insulation Testing of Large AC Rotating Machinery with High Direct Voltage. (This foreword is not a part of IEEE Std , Recommended Practice for Insulation In the Insulation Subcommittee of the IEEE Rotating Machinery .
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Leee that sense, it is important to pay close attention to overheating, which results from excessive system losses and cooling system inefficiency. Use of AC and DC hipot tests to assess stator winding insulation.
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At that point, the temperature value will be compared to with the values obtained using finite elements method and multivariate regression. Uniform step, graded step, and ramped test methods. Scientific Research An Academic Publisher.
Showing of 39 extracted citations. The most usual methodology is the finite element method, or linear regression. On-line and off-line tests M. In order to address this methodology, a calculation method was developed to determine temperature increases in the last stator package. World Journal of Engineering and TechnologyVol. Skip to search form Skip to main content.
Power uprates pose a threat to electrical generators due to possible parasite effects that can develop potential failure sources with catastrophic consequences in most cases. Uniform stepgraded stepand ramped test methods. Online technique for insulation assessment of induction ieew stator windings under different load conditions Majid MalekpourB.
Until recent revisions, the basic procedures and standards in use were written over 25 years ago. Citations Publications citing this paper. References Publications referenced by this paper.
From This Paper Figures, tables, and topics from this paper. High – voltage Ieed tests for evaluating stator winding insulation: The calculation of magnetic fields, the evaluation of eddy-current losses and the determination of loss-derived temperature increases, are challenging problems requiring the use of simulation methods.
Stone Published in IEEE Transactions on Industry Applications IEEE standards and test procedures are widely used by motor and generator vendors and users to commission windings in new machines, as well as evaluate the condition of the winding insulation in operating machines. Detection of stator winding insulation failures: The mathematical model developed was based on an artificial intelligence technique, more specifically neural networks.
Understanding water treeing mechanisms in the development of diagnostic test methods. This last scenario was also useful to test extrapolation accuracy.
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Topics Discussed in This Paper. Significance of defects found during high direct voltage ramp tests.
Examples of stator winding partial discharges due to inverter drives. Dhirani, Electrical Insulation for Rotating Machines. Since the s, motor windings have encountered many changes in their design and manufacture. This paper has 48 citations. Diagnostic tests Interpretation logic R.
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The end region of a stator is the most sensitive part to overheating. BlanquezCarlos A. Showing of 7 references.