Method and apparatus for determining time domain parameter of partial discharge current of high voltage IGBT
A technology of partial discharge and time-domain parameters, applied in the direction of testing dielectric strength, etc., can solve the problem of short partial discharge pulse time
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[0044] The present invention will be further described in detail below in conjunction with the accompanying drawings.
[0045] The embodiment of the present invention provides a method for determining a time domain parameter of a partial discharge current of a high-voltage IGBT. The specific steps are as follows: figure 1 The specific process is as follows:
[0046] S101: Obtain the partial discharge current of the high-voltage IGBT through the HFCT type broadband pulse current sensor, and pre-screen the partial discharge current to obtain the partial discharge pulse;
[0047] S102: Count the partial discharge pulses pre-screened in S101, and extract the current amplitude of the partial discharge pulses;
[0048] S103: Determine a time domain parameter according to the current amplitude of the partial discharge pulse extracted in S102.
[0049] In the above S101, the specific process of pre-screening the partial discharge current to obtain the partial discharge pulse is as ...
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