BSI PD IEC/TS 62758:2012
$167.15
Calibration of space charge measuring equipment based on the pulsed electroacoustic (PEA) measurement principle
| Published By | Publication Date | Number of Pages |
| BSI | 2012 | 40 |
IEC 62758, which is a technical specification, presents a standard method to estimate the performance of a pulsed electro-acoustic (PEA) measurement system. For this purpose, a systematic procedure is recommended for the calibration of the measurement system. U sing the procedure, users can estimate whether the system works properly or not.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 4 | CONTENTS |
| 6 | FOREWORD |
| 8 | INTRODUCTION |
| 9 | 1 Scope 2 Normative references 3 Terms and definitions |
| 10 | 4 Basic theory for measurement 4.1 Permittivity and induced charge density 4.2 Charge in dielectrics and Poisson’s law |
| 11 | 4.3 Coulombic force of charge in electric field 4.4 Reflection and transmission of pressure wave 4.5 Maxwell stress |
| 12 | 4.6 Response of linear system 5 Procedure to calibrate the space charge measurement 5.1 Principle of calibration 5.1.1 General |
| 13 | 5.1.2 Typical result of calibration measurement Figures Figure 1 – Theoretical distributions for calibration measurement |
| 14 | 5.2 Sample preparation 5.2.1 Sample for calibration measurement Figure 2 – Typical result of calibration measurement |
| 15 | 5.2.2 Sample placement 5.3 Data acquisition 5.3.1 Pulse voltage test 5.3.2 Averaging Figure 3 – Drop of silicone oil and sample placement Figure 4 – Pulse voltage application test |
| 16 | 5.3.3 Data acquisition for calibration Figure 5 – Dependence of averaging number |
| 17 | 5.3.4 Signal obtained under short circuit condition 5.4 Data processing and calibration 5.4.1 Deconvolution Figure 6 – Measurement of waveform for calibration Figure 7 – Confirmation of absence of space charge accumulation during d.c. voltage application for calibration |
| 18 | 5.4.2 Calibration for horizontal axis and calculation of waveform for electric field distribution 5.4.3 Calibration for electric field and charge density distributions Figure 8 – Deconvolution and calibration |
| 19 | 5.4.4 Confirmation of linearity of measurement 5.4.5 Typical test results by expert members of project team Figure 9 – Calibration for electric field and charge density distributions Figure 10 – Confirmation of linearity measurement |
| 20 | Figure 11 – Results of calibration test by research Group A Figure 12 – Results of calibration test by research Group B |
| 21 | Figure 13 – Results of calibration test by research Group C Figure 14 – Results of calibration test by research Group D Figure 15 – Results of calibration test by research Group E |
| 22 | Table 1 – Measurement resolution |
| 23 | Annex A (informative) Theory of PEA method |
| 24 | Figure A.1 – Principle of acoustic wave generation in PEA method |
| 26 | Figure A.2 – Pressure wave propagation in PEA measurement system |
| 27 | Figure A.3 – Response of piezo-transducer Figure A.4 – Transform from pressure to amount of charge induced on piezo-transducer |
| 28 | Figure A.5 – Relationship between the pulse width and thickness of piezo-transducer |
| 29 | Figure A.6 – Adequate spatial resolution |
| 31 | Figure A.7 – Example of two types of signal |
| 32 | Figure A.8 – Calculation flow for deconvolution |
| 34 | Figure A.10 – PEA measurement apparatus |
| 35 | Figure A.11 – Equivalent circuit for voltage application |
| 36 | Figure A.12 – Equivalent circuit for signal detection |
| 37 | Bibliography |
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BSI PD IEC/TS 62758:2012
Calibration of space charge measuring equipment based on the pulsed electroacoustic (PEA) measurement principle Published…
