Photos of Hanoi Power Transmission Company cleaning live-line porcelains with high-pressure water

This method makes it easy to clean the devices on the grid without power outage, reducing the discharge incidents due to contamination, improving the reliability of power supply to customers, especially during the up-coming hot season of 2019. Photos taken by evn.com.vn at Kim Dong 220kV Substation (Hung Yen province), 6 March 2019.

One of the preparatory tasks is the measurement of high-pressure water parameters, including the two most important parameters of resistivity and conductivity.

Cleaning the live-line devices with high-pressure water shall comply with very strict technical requirements, including the check of wind speed to ensure safety for climbing workers to perform the task

When the parameters are ensured, the on-site commander will disseminate the requirements to each worker before performing the task.

Cleaning of devices before the hot season to ensure devices operating safely and stably during the forecasted notching season

Currently, Hanoi Power Transmission Company has established three live-line cleaning teams to meet the management of 13 substations and nearly 1,000km of transmission lines (including Hanoi and five neighbouring provinces of Hung Yen and Bac Ninh, Hai Duong, Vinh Phuc, Ha Nam).