Design and Realization of High-voltage Picosecond Pulse Generator
Caixin Sun · Gao dianya jishu · 2010
In order to study the propagation characteristic of ultra-high frequency electromagnetic partial discharge signal inside or outside the GIS and power transformer,a kind of high-amplitude picosecond pulse was obtained through cut processing the steep and tail on the Marx generator based on the related principle of nanosecond and picosecond pulse from the pulse power technology. The experimental results show that the picosecond pulse generator can produce one pulse with 28.12 kV in peak-to-peak value,less than 250 ps(10%～90%)in drop and 600 ps(full width at half maximum)in the pulse width. Meanwhile ,the electric discharge is stable and the duplicated characteristic is also great. This kind of pulse can be used as a particular partial discharge signal source with the known feature and the special ultra-high frequency. The pulse proposed in this paper can set the stage for the study of detecting the ultra-high frequency signal of partial discharge laid GIS and the power transformer.