Method and device for suppressing distribution transformer overload under electric vehicle charging station

• Main Authors: LI BINGYANG, ZHANG QIANJIN, CHEN JIANWEN, LI ZHIJIE, YIN WENTAO, LIU GUOTE, XIE MINGQUAN, DONG HAILONG, GUO FANG, ZHANG YONGFEI, WU MING, PI XUMEI, WAN LIKAI, PI QIURU, PI DONGRU, WEN AN, MA JUNJIE
• Format: Patent
• Language: Chinese; English
• Published: 14.07.2020
• Subjects: ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; PERFORMING OPERATIONS; TRANSPORTING; VEHICLES IN GENERAL

The invention discloses a method and a device for suppressing distribution transformer overload under an electric vehicle charging station. The method is applied to a transformer-charging station system, the charging station is composed of a plurality of charging piles, a transformer provides output power for the charging station, and a distribution transformation step is included. The distribution transformation step comprises substeps: when St is larger than or equal to S, whether Y is larger than or equal to Q or not is judged; when Y is smaller than Q, the output power of each charging pile is adjusted to the target power P; when Y is larger than or equal to Q, all the charging piles are operated in a no-load mode; and when St is smaller than S, all the charging piles are operated in afull-load mode. The device comprises a parameter acquisition module, a calculation module and an execution module. According to the method and the device, the output power of the charging pile is reasonably adjusted, so that