According to the voltage dip situation for multiple faults case in complex power grid a novel analysis method was proposed. This method regarded all fault points as virtual buses and introduced multiple fault location parameters into voltage dip analysis. The bus impedance equation was extended by calculating the mutual impedance and self impedance between virtual bus and non-fault bus, one virtual bus and another. Each fault current phasor was calculated according to the faults boundary conditions. The fault voltage function of any bus on the multiple fault location parameters in the power gr...
