METHOD OF CALCULATING REGENERATIVE ENERGY FOR DC ELECTRIC RAILWAY SUBSTATION

• Main Authors: MOK, JAI KYUN, CHANG, SE KY, BAE, CHANG HAN
• Format: Patent
• Language: English; Korean
• Published: 06.01.2011
• Subjects: MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

PURPOSE: A regenerative effective electric energy calculating method is provided to estimate regenerated energy by accurately estimating the capacitance of a regenerative inverter. CONSTITUTION: A parameter of a subway electric power substation and the regenerative electric energy information of a propulsion device in an electric vehicle are inputted to a voltage/current record device(S310-S330). A DC measuring sensor measures a current and a voltage(S340). The voltage/current record device recognizes the amount of a regenerative electric energy AC voltage by using data measured from a DC current measuring sensor and a DC voltage measuring sensor(S350). A regenerative effective electric energy, which represents the loss of electric energy due to an electric train vehicle line internal resistance, is calculated(S360). The amount of regenerative electric energy is calculated according to a schedule speed, an operational headway, and a braking process(S370). The regeneration effective electric energy of the subway electric power substation is calculated(S380).