CRITICAL FAILURE REMOVAL TIME CALCULATION DEVICE, CRITICAL FAILURE REMOVAL TIME CALCULATION METHOD AND PROGRAM

摘要

PROBLEM TO BE SOLVED: To calculate a critical failure removal time in consideration of high-spee reclosing.SOLUTION: A critical failure removal time calculation device includes a first information device for minimizing an objective function defined by the following formula under the condition that power transmission is immediately carried out on a line from which a failure has been removed for the objective function, by using an error vector μwhich is defined by using a multidimensional state variable xrepresenting the state of a power system when a failure is eliminated, a multidimensional state variable x(m represents an integer) representing the end point of a trajectory representing the temporal variation of the state of the power system, plural multidimensional state variables x(1≤k≤m+1:k, m represents an integer) which is discretized between the multidimensional state variables xand xand is conformed with a power system equation, and a movement time Δt between adjacent multidimensional state variables xand x, and a second information device for obtaining a multidimensional state variable xand a failure removal time τ corresponding to the multidimensional state variable x.SELECTED DRAWING: Figure 6