Transient Recovery Voltage (TRV) analysis in EMTP

[@davidanderton8441]

Struggling to understand why you adjust the TRV window when you change the fault current. Surely the TRV window is just a function of the breaker itself?

[@phuctranhuu7200]

We usually using statistical (100 simulations) to calculate TRV and RRRV. When switching breaker in real-life, we have to consider the probability of the waveform (switching when in top of the wave sine is different than switching when the sine wave is zero)

[@henrygras5732]

Hi Phuc Tran Huru, Right, however, this will depend on the situation. Circuit breakers interupt the current close to current zero-crossings. This is a physical limitation. Therefore, even if you change the switching time, the breaker interupts at zero-crossings. The exception is when the breaker chops a large current, like vaccum CB may chop up to 15A. For example, disconnecting an unloaded transformer. Do you agree with that?

[@phuctranhuu7200]

@@henrygras5732 Yes I agree with that

[@victorfedorov2295]

Do you have a typical model of 3 fase and 1 case cable in wbline block?

[@alejandraandrade506]

Can I pass measurements from emtp to matlab?

[@pedrocamargos2088]

yes. You can salve .mat type variables output from PLOTXY