Patent ID: 8271148
Filing Date: 2012-09-18
Classification: H02J,Y02E

Abstract:
1. A method for controlling a voltage of a distribution automation system, the distribution automation system including a plurality of nodes and a distribution line, the method comprising the steps of: modeling a distribution system in the form of a distribution load based on constants of four terminals according to a type of connection between each of the plurality of nodes and the distribution line; determining a first formula for estimating the magnitude of a voltage at a node, among the plurality of nodes, from a current value; determining a second formula for a current at the node according to whether the distribution line is connected to a feeder terminal, and calculating a load admittance from the determined second formula; estimating and calculating the magnitude of the voltage at the node by substituting the calculated load admittance in the determined first formula; determining an objective function including the calculated magnitude of the voltage and including a control variable for controlling the magnitude of the voltage; and calculating a value of the control variable to allow the determined objective function to have a minimum value, and applying the calculated value of the control variable to each of voltage control devices provided in the distribution automation system.