VFTO (very fast transient overvoltage) Modeling analysis method for disconnector opening-closing process

A VFTO (very fast transient overvoltage) modeling analysis method for disconnector opening-closing process gives a fully consideration on various influencing factors to the disconnector opening-closing process, so that a simulation circuit is closer to reality. Circuit diagram elements include power source U, power side line internal resistance Ru, power side line inductance Lu, ground stray capacitors Cu1 and Cu2 at power ports and power connection wires, disconnector DS, ground stray capacitors C1 and C2 on the left and right of the disconnector, equivalent resistor and equivalent inductorsRL and LL on a line between the disconnector and a load capacitor, capacitance value of the load capacitor, equivalent resistance and equivalent inductance C, R and L, power side and load capacitor side ground resistors r1 and r2, inter-port arc resistor and port capacitor r(t) and c(t) of the disconnector opening-closing process, and the like. The VFTO modeling analysis method provided herein hasthe advantages that the m