Provided is a power supply
restoration method for a power distribution network based on an intelligent
soft switch. The method comprises: according to a selected power
distribution system, inputting a connection relationship among a line parameter, a load level, and a
network topology, a
system operating voltage level and
branch current limit, an intelligent
soft switch access position, capacity and loss coefficient, a
system fault location, and a reference
voltage and a reference power initial value; according to a provided power
distribution system structure and parameter, establishing a mathematic model of power supply restoration for the power distribution network based on the intelligent
soft switch, including: setting a maximum power supply restoration
active load as an objective function, and taking into account the
system load flow constraints,
operating voltage constraints,
branch current constraints and intelligent soft-switching operation constraints; solving the obtained
mathematical model by using a primal-dual
interior point method; outputting solve results: an objective function value, a
voltage amplitude and a
phase angle of each node, a restoration load coefficient of each node, and an intelligent soft switch transmission power value. The method provided by the present invention avoids the hidden danger caused by switch operations, is more safe and reliable, and comprehensively improves the self-healing ability of the power distribution network fault.