Get hands-on experience and learn new techniques at our interactive tutorial session.
After more than 40 years of research and development since the proposal of the pulsed electroacoustic (PEA) method by Dr. Tatsuo Takada, space charge measurements of full-scale HVDC insulating systems have finally reached a level where it can be used in practical tests. Unlike film samples, the measurement of practical insulating systems involves unique problems such as voltage application methods and acoustic propagation characteristics. However, it is difficult to systematize the know-how and describe in a document. In this short training, the participants will experience the know-how of space charge measurement by practically fabricating a measurement cell, and calibrate the charge intensity induced on the electrodes of an XLPE Cable insulation of 10 to 20 mm in thickness, with a bias voltage of about 10 kV. Participants will take home their own measurement cell.
1. Lecture on space charge measurement
- Lecturer: Peter Morshuis (Solid Dielectric Solutions, The Netherlands)
- Title: "The why and how of space charge measurements - from small specimens to full-size cables and joints"
2. Practice
- Lecture on internal structure of the cell by instructors
- Assembly
- Practical measurement with participant's own cell
3. Brief explanation on signal processing by instructors
Photos are cited from EINA(Electrical Insulation News in Asia) magazine No. 29 p.25
