Q: I have an old solar plant that puts out constant current at power-factor angle of zero (i.e., all real power) at all voltages, how can I model it without prefault MW output?
A: Usually these old plants are relatively small (no more than a few MWs) and they are usually in distribution networks. You can either omit them as “negative load”, or you can introduce a load to absorb most of the MW output. I use the term “most” because the load will not completely offset the MW generation from the plant due to these reasons:
1. Loads in OneLiner’s short circuit simulation are constant impedances; therefore their power consumption varies as the square of voltage magnitude
2. MW power output of a constant-current plant varies linearly as voltage.