I am doing the electrical design for a project that consists of two 13.8 kV 1500kW co-gens, and one 13.8 kV 1100kW co-gen. All are set to be running in parallel with the utility on the same 13.8kV bus. I am trying to figure out what adverse effects would circulating neutral currents have on this system? Would having different impedances on the neutral ground resistors cause circulating neutral currents?
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