I have simulated a solar pv model using PSCAD and I have modelled a lightning current waveform as well. Both these models run properly when ran as separate projects. However, when I inject the lightning current into the solar pv system, my expected voltage and current reading should have a surge but the actual voltage and current that I am getting is the same as when I run it under normal condition, i.e. without injection of lightning current. If anyone knows why this issue is occurring, or has prior experience dealing with the software or the topic, please do comment and help me out.
Dear Iram Taher
Have a look: https://www.pscad.com/knowledge-base/article/521
Kind Regards
Qamar Ul Islam
Qamar Ul Islam, thank you for your response. My solar pv system is actually different than this example. If you have some idea on the software, could you leave your email so i can email you my model and get in details with the issue i am facing?
You seem to have two circuits, one containing the solar panel and its load, the other the lightning strike current from sky to earth. It may be that the lightning strike current is flowing (or the software thinks it's flowing) equally in the panel and load sides of the solar circuit so the net current totally cancels. This is because the modelling may be incomplete - the lightning strike current is so large that even fractions of an ohm resistance cause voltage drops in your circuit of the same order as the solar voltage 100 kA in 1 milliohm = 100V. Make sure the model reflects this accurately (the model must include wiring resistance even when this is in the mOhm region). Best wishes with your research!
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