On May 10, a substation maintenance team under the maintenance and trial management of the Inner Mongolia Ultra-High Voltage Power Supply Company of Inner Mongolia Electric Power Group successfully applied live oil replenishment technology to accurately maintain current transformers. This innovative measure can not only effectively improve the operating efficiency of the equipment, but also It provides new ideas for ensuring power supply operation.

In recent years, the low oil level defect of voltage transformers caused by oil leakage has become a problem that plagues major substations. The traditional oil replenishment method requires equipment power outage for processing, which not only affects the power supply reliability of the power grid, but also greatly increases maintenance costs. The maintenance class, which regards “innovation and efficiency creation” as its annual key task, brings a new technology to the current transformer oil replenishment work: live oil replenishment, that is, replenishing and replacing oil on the equipment without power outage.

Maintenance and test management A substation maintenance team applied this new technology for the first time at the 220 kV Yanyong I line interval of the Yongshengyu 500 kV substation, and adopted a new intelligent vacuum oil replenishment device to realize automatic filtering and Evacuate to ensure high quality of this oil replenishment operation. During the oil replenishment process, maintenance personnel operate accurately and monitor strictly. They follow the operating procedures and equipment instructions to strictly control the danger point pre-control, safe distance guarantee, and safe operation of the device. They closely monitor the entire operating status of the equipment and make precise adjustments. The oil replenishment speed and oil replenishment pressure ensure that the equipment can reliably achieve the best oil replenishment effect.

The successful application of live oil replenishment technology fully demonstrates the ability and determination of the maintenance and test management substation maintenance team in technological innovation and lean maintenance. In the future, the maintenance team will continue to fully implement the group company’s “1469” mid- and long-term development strategy, innovate and create efficiency, strive to complete various maintenance tasks with a higher attitude, and provide more solid technical support and guarantee for the safe and stable operation of the power grid.