Small capacitive current interruption with air-break disconnectors in a high-voltage network is an interactive event between circuit and arc with multiple re-ignitions during opening. In order to investigate the transient phenomena, a set-up to measure arc characteristics is developed and a series of interruption tests is performed. The system voltage is up to 150kV rms and the interruption capacitive current is up to 0.35A rms. The voltages across load- and sourceside capacitances and the current through the disconnector are recorded. Based on test data, arc characteristics such as arc conductance, arc power and v-i characteristic are studied. A comparison between the test and simulation shows good agreement.
|Title of host publication||Proceedings of the 16th international symposium on High voltage engineering, Cape Town, South Africa, 24-28 August, 2009|
|Place of Publication||Johannesburg|
|Publication status||Published - 2009|