POWER SYSTEM ACCIDENT CAUSE ESTIMATION DEVICE, POWER SYSTEM ACCIDENT CAUSE ESTIMATION SYSTEM, POWER SYSTEM ACCIDENT CAUSE ESTIMATION COMPUTER PROGRAM AND POWER SYSTEM ACCIDENT CAUSE ESTIMATION METHOD

摘要

To provide a power system accident cause estimation device for estimating accident cause occurred in a power system more accurately.SOLUTION: In a power system accident cause estimation system 1, a power system accident cause estimation device 2 has a system model creation part 21 for creating a system model, i.e., an electric circuit model from the reference point of a power supply line 9 to an incident generation point, a fault point model creation part 22 for creating a fault point model, i.e., an electric circuit model from the incident generation point to the earth, on the basis of an inputted fault waveform at the incident generation point in the power supply line 9, a parameter adjustment part 23 for creating a coupling model by coupling the system model and the fault point model, and adjusting the parameters of the fault point model, so that the finite difference of a simulation waveform by the coupling model and the fault waveform of the incident generation point goes below a preset number value, and a cause estimation part 24 for estimating the accident cause, on the basis of a fault point model subjected to parameter adjustment by the parameter adjustment part 23.SELECTED DRAWING: Figure 1