Honggutan District, Nanchang, Jiangxi: New Power Supply Protection Model for Planned Distribution Network Operations

Recently, the Honggutan District Power Supply Company of Nanchang City, Jiangxi Province, innovatively adopted a “low-voltage power generation vehicle + small generator” model to ensure power supply during planned operations on the distribution network of Phase III of Hongling Garden.

A week before the start of the power protection task, the Honggutan District Company coordinated with multiple departments and generator manufacturers to conduct on-site surveys and assess the performance and technical parameters of each generator. Subsequently, staff retrieved recent low-voltage load data for the planned operation area from the system, conducted comparative analyses, and ultimately formulated the power protection access plan. The local power supply office also took proactive steps by arranging customer managers to issue advance notifications in electricity user groups and making multiple community visits to encourage residents to cooperate with the power protection work.

For this operation, one 60-kilowatt generator and two 30-kilowatt generators were used. These units are compact and easy to transport. The planned operation involved two power supply zones in Phase III of Hongling Garden, serving a total of 338 households. Compared with previous methods, this new power supply protection model reduced the number of affected households by 10 during planned outages.

Moving forward, the Honggutan District Company will continue to tailor protection approaches to the characteristics of each operation site, adopting medium- and low-voltage generation vehicles, small generators, and bypass operations to enhance power supply reliability. While eliminating equipment hazards on schedule, the company aims to minimize the impact on residents’ daily electricity use, striving to achieve truly “zero-perception” operations. (By Yu Peng)