The study of operating overvoltage suppression measures in black-start process based on conversion from BPA to PSCAD component models

Calculating and assessing the no-load operating overvoltage is an important part in black-start scheme design. It´s unable for the electromechanical transient software - BPA to simulate the electromagnetic transient overvoltage. So according to the transfer function of component models in BPA and PSCAD, this paper analyzes the conversion methods from BPA to PSCAD. The simulation results verify their feasibility. Then, it builds corresponding mathematical models of the shunt reactor, lightning arrester, closing resistor and phase controlled switch in a long distance transmission system with a single power source. Finally, based on one black-start path of Guangxi power grid, it builds overvoltage verification models in the PSCAD simulation platform. By observing the simulation waveforms and taking the overvoltage amplitude and duration as the rationale, it respectively compares different effects of the shunt reactor, lightning arrester, closing resistor and phase control technique on suppressing terminal overvoltage.