Distribution Automation System and its voltage control method for reactive power compensation

The present invention relates to a new distribution automation system and a method of voltage control to supply a voltage to a consumer by appropriately changing the setting of the voltage control device so that this can be compensated for invalid voltage in real each load stage steady, distribution system depending on the connection type of each node and the distribution lines constituting the first step of modeling the distribution grid in the form of a distributed load by applying the four-terminal method constant (constants of four terminals); A second step of confirmation the formula for estimating the size of the voltage at the node from the current value of the adjacent node; A third step for deciding the objective function including a control variable to a voltage magnitude value and control this calculation by a formula determined in the second step; And the objective function, the final output values ​​of the control variables that have a minimum value, and at the center of the distribution system to the calculated value of a fourth step of applying a voltage to each control device. Distribution system, power flow, voltage control, power distribution automation system