Integrated device and method for protecting and monitoring air-cooled control power supply of transformer

• Main Authors: ZU SHUTAO, HU JIAXIANG, LI GUANG, LIU CHANG, GUO SHUAI, ZHANG NING, LI QIANG
• Format: Patent
• Language: Chinese; English
• Published: 31.01.2023
• 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 discloses an integrated device and method for protecting and monitoring an air cooling control power supply of a transformer. The integrated device comprises a protection monitoring device which is inserted into the air cooling control power supply of the transformer and is used for obtaining the dynamic change of the air cooling control power supply; the method comprises the following steps: performing protection according to the dynamic change of the current of the air-cooled control power supply, performing monitoring according to the dynamic change of the voltage of the air-cooled control power supply, presetting the maximum fluctuation current of the integrated device for protecting the air-cooled control power supply of the transformer, and presetting the peak fluctuation voltage of the integrated device for monitoring the air-cooled control power supply of the transformer. The protection monitoring device obtains the maximum fluctuation current and the peak fluctuation voltage of the air-