Impulse testing of hybrid gas-solid polymer insulation systems
Paper in proceedings, 2013

Existing methods of impulse testing of high-voltage insulation are examined and their applicability to a hybrid gas-solid system is analysed. The experiments were conducted with spherical electrodes of different radii immersed in air and separated by a polymeric barrier. The obtained results are discussed in terms of test voltage patterns (withstand/flashover sequences) obtained with different test methods including standard and modified procedures. It is shown that presence of gas-solid interfaces in the considered system, which may be charged during testing with unipolar impulse voltages, makes correct determination of low probability flashover voltages needed for insulation design purposes hardly achievable due to statistical dependencies of the test results.

Author

Sarath Kumara

Chalmers, Materials and Manufacturing Technology, High Voltage Engineering

Yuesheng Zheng

Chalmers, Materials and Manufacturing Technology, High Voltage Engineering

Yuriy Serdyuk

Chalmers, Materials and Manufacturing Technology, High Voltage Engineering

Stanislaw Gubanski

Chalmers, Materials and Manufacturing Technology, High Voltage Engineering

Raimund Summer

Manjunath Ramesh

Reiner Haller

Peter Martinek

Proceedings of 18th International Symposium on High Voltage Engineering, Aug. 25-30, 2013, Seoul, Korea

509-514

Areas of Advance

Energy

Subject Categories

Other Electrical Engineering, Electronic Engineering, Information Engineering

More information

Created

10/8/2017