Initial conditions of surface charge accumulation under impulse voltage

The surface charge distributions under impulse voltage are measured. Two types of insulators are investigated. The influence of impulse voltage magnitude on the surface charge accumulation is studied. It is shown that the pre-discharge current has a neutralization effect on charge accumulation, whic...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	Wang, F., Qiu, Y., Zhang, Q., Qiu, X.Q., Kuffel, E.
Format:	Tagungsbericht
Sprache:	eng
Schlagworte:	Applied sciences Charge measurement Current measurement Electric discharges Electrical engineering. Electrical power engineering Electrical power engineering Electrical properties (ionization, breakdown, electron and ion mobility, etc.) Electrodes Exact sciences and technology Gas insulation Insulators Operation. Load control. Reliability Partial discharges Physics Physics of gases Physics of gases, plasmas and electric discharges Physics of plasmas and electric discharges Power networks and lines Probes Q measurement Surface charging Surface discharges Various equipment and components Voltage measurement
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	The surface charge distributions under impulse voltage are measured. Two types of insulators are investigated. The influence of impulse voltage magnitude on the surface charge accumulation is studied. It is shown that the pre-discharge current has a neutralization effect on charge accumulation, which makes the surface charging very weak when the lightning voltage is close to the flashover voltage. The initial conditions of surface charge accumulation are discussed in the present paper, and the source of charging is also studied. It is concluded that partial discharge in gas near the surface of the insulator is the initial condition of charge accumulation under impulse voltage.
DOI:	10.1109/CEIDP.2002.1048907