929 / 2019-04-30 17:19:49

Research on Power System Restoration of High Voltage Transmission Line

high voltage,power system restoration,black start,fitting function

According to the characteristics of power service restoration of high voltage trunk network. The influence of line parameters on overvoltage due to empty charge is analyzed from the characteristics of line distribution parameters. In view of the voltage drop of transmission lines during power supply recovery, the characteristics of operating overvoltage and power frequency overvoltage when multiple lines with bifurcation are restored to power supply are analyzed. The overvoltage is fitted by MATLAB software and overvoltage is used. The fitting function is used to calculate the overvoltage value, which saves a lot of calculation time for power system black-start decision-making. Finally, taking a high-voltage power grid in a southern province as an example, the over-voltage simulation analysis is carried out. The simulation results show the good practicability of the simulation analysis and fitting method in this paper. The conclusion has important guiding value for the black start decision-making optimization of power grid.