Automatic delay closing device of low-voltage master switch of distribution transformer

• Main Authors: LIN PING, ZHENG ZECHENG, GUO ZHUYING, ZHANG JUNDA, CHEN LIANGHAO, YAO TIANYI, SHAO SHENG, JIANG ZHENYU, LIN WENYU, ZHANG WEI, QIAN GAOSONG
• Format: Patent
• Language: Chinese; English
• Published: 08.08.2017
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS; GENERATION; SYSTEMS FOR STORING ELECTRIC ENERGY

The invention relates to an automatic delay closing device of a low-voltage master switch of a distribution transformer. The automatic delay closing device comprises a bottom plate and a metal shell, wherein a programmable logic controller (PLC) control chip is arranged on the bottom plate, and a detection module, a communication module, a time module, an execution module and a power module are arranged on the PLC control chip. The automatic delay closing device has the advantages that automatic delay closing power transmission of the low-voltage master switch of the distribution transformer is achieved by the time module, the automatic reclosing function of a low-voltage circuit breaker after power-losing tripping is safely and reliably achieved, the time required for closing the low-voltage circuit breaker can be shortened to 1,015 seconds from 33 minutes, so that the economic benefit and the power supply reliability of a power grid enterprise are remarkably improved; the outside electromagnetic interferenc