MULTI-SOURCE POWER SUPPLY CIRCUIT TEST METHOD, SYSTEM, AND DEVICE

• Main Authors: GUO, Wanlu, LI, Xining, FU, Jin, LIU, Shijie, PENG, Xinping, ZHANG, Shuxun
• Format: Patent
• Language: Chinese; English; French
• Published: 31.05.2019
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; PERFORMING OPERATIONS; POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY-PROPELLED VEHICLES; SYSTEMS FOR STORING ELECTRIC ENERGY; TRANSPORTING; VEHICLES IN GENERAL

A multi-source power supply circuit test method, system, and device, applied in a power supply circuit in which a contact line and a conductor rail are both connected to a locomotive main transmission system by an isolation/conduction device. The method comprises: obtaining, by means of a first voltage sensor (11), a first voltage of a standby power supply circuit, wherein a locomotive main transmission system is currently powered by a target power supply circuit, the target power supply circuit is a contact line power supply circuit or a conductor rail power supply circuit, and the standby power supply circuit is a conductor rail power supply circuit or a contact line power supply circuit in a standby state; and if the first voltage is within a preset range, determining that the standby power supply circuit is electrically conducted to the target power supply circuit, and addressing the corresponding fault. The method uses a simple circuit and has a small footprint, and is used in a power supply circuit havi