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PD IEC/TS 60034-27-2:2012 Rotating electrical machines - On-line partial discharge measurements on the stator winding insulation of rotating electrical machines, 2012
- 30262048-VOR.pdf [Go to Page]
- CONTENTS
- FOREWORD
- INTRODUCTION
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 Nature of PD in rotating machines [Go to Page]
- 4.1 Basics of PD
- 4.2 Types of PD in rotating machines [Go to Page]
- 4.2.1 General
- 4.2.2 Internal discharges
- 4.2.3 Slot discharges
- 4.2.4 Discharges in the end-winding
- 4.2.5 Conductive particles
- 4.3 Arcing and sparking [Go to Page]
- 4.3.1 General
- 4.3.2 Arcing at broken conductors
- 4.3.3 Vibration sparking
- 5 Noise and disturbance [Go to Page]
- 5.1 General
- 5.2 Noise and disturbance sources
- 5.3 Frequency domain separation
- 5.4 Time domain separation
- 5.5 Combination of frequency and time domain separation
- 5.6 Gating
- 5.7 Pattern recognition separation
- 6 Measuring techniques and instruments [Go to Page]
- 6.1 General
- 6.2 Pulse propagation in windings
- 6.3 Signal transfer characteristics
- 6.4 PD sensors [Go to Page]
- 6.4.1 General
- 6.4.2 Design of PD sensors
- 6.4.3 Reliability of PD sensors
- 6.5 PD measuring device
- 6.6 PD measuring parameters [Go to Page]
- 6.6.1 General
- 6.6.2 PD magnitude
- 6.6.3 Additional PD parameters
- 7 Installation of PD on-line measuring systems [Go to Page]
- 7.1 General
- 7.2 Installation of PD sensors
- 7.3 Outside access point and cabling
- 7.4 Installation of the PD measuring device
- 7.5 Installation of operational data acquisition systems
- 8 Normalization of measurements [Go to Page]
- 8.1 General
- 8.2 Normalization for low frequency systems [Go to Page]
- 8.2.1 General
- 8.2.2 Normalization procedure
- 8.3 Normalization / sensitivity check for high and very high frequency systems [Go to Page]
- 8.3.1 Specification for the electronic pulse generation
- 8.3.2 Configuration of the machine
- 8.3.3 Sensitivity check
- 9 Measuring procedures [Go to Page]
- 9.1 General
- 9.2 Machine operating parameters
- 9.3 Baseline measurement [Go to Page]
- 9.3.1 General
- 9.3.2 Recommended test procedure
- 9.4 Periodic on-line PD measurements
- 9.5 Continuous on-line PD measurements
- 10 Visualization of measurements [Go to Page]
- 10.1 General
- 10.2 Visualization of trending parameters
- 10.3 Visualization of PD patterns
- 11 Interpretation of on-line measurements [Go to Page]
- 11.1 General
- 11.2 Evaluation of basic trend parameters
- 11.3 Evaluation of PD patterns [Go to Page]
- 11.3.1 General
- 11.3.2 PD pattern interpretation
- 11.4 Effect of machine operating factors [Go to Page]
- 11.4.1 General
- 11.4.2 Machine operating factors
- 11.4.3 Steady state load conditions
- 11.4.4 Transient load conditions
- 12 Test report
- Annex A (informative) Examples of Phase Resolved Partial Discharge (PRPD) pattern
- Bibliography
- Figures [Go to Page]
- Figure 1 – Time domain disturbance separation by time of pulse arrival
- Figure 2 – Combined time and frequency domain disturbance separation (TF-map)
- Figure 3 – Idealized frequency response of a PD pulse at the PD source and at the machine terminals; frequency response of different PD measuring systems: a) low frequency range, b) high frequency range, c) very high frequency range
- Figure 4 – Measuring object, during normalization
- Figure 5 – Arrangement for sensitivity check
- Figure 6 – Recommended test procedure with consecutive load and temperature conditions
- Figure 7 – Example of visualization of trending parameters
- Figure 8 – Example of a Φ-q-n partial discharge pattern,with colour code for the pulse number H(n)/s
- Figure 9 – Example of a three phase, phase shifted Φ-q-n plot
- Figure A.1 – Stylized examples of PD phase resolved patterns
- Figure A.2 – Example of internal void discharges PRPD pattern, recorded during laboratory simulation
- Figure A.3 – Example of internal delamination PRPD pattern,recorded during laboratory simulation
- Figure A.4 – Example of delamination between conductorand insulation PRPD pattern, recorded during laboratory simulation
- Figure A.5 – Slot partial discharges activity and corresponding PRPD pattern,recorded during laboratory simulation
- Figure A.6 – Corona activity at the S/C and stress grading coating,and corresponding PRPD pattern, recorded during laboratory simulation
- Figure A.7 – Surface tracking activity along the end arm and correspondingPRPD pattern, recorded during laboratory simulation
- Figure A.8 – Gap type discharge activities and corresponding PRPD patterns,recorded during laboratory simulations
- Figure A.9 – Example of internal void discharges PRPD pattern,recorded on-line
- Figure A.10 – Example of internal delamination PRPD pattern, recorded on-line
- Figure A.11 – Example of delamination between conductor andinsulation PRPD pattern, recorded on-line
- Figure A.12 – Degradation caused by slot partial discharges activityand corresponding PRPD pattern recorded on-line
- Figure A.13 – Degradation caused by corona activity at the S/C andstress grading coating and corresponding PRPD pattern, recorded on-line
- Figure A.14 – Surface tracking activity along the end arm andcorresponding PRPD pattern, recorded on-line
- Figure A.15 – Degradation caused by gap type dischargesand corresponding PRPD patterns, recorded on-line
- Figure A.16 – PRPD pattern recorded on-line, illustrating multiple PD sources [Go to Page]