State Grid Zhenjiang adopts earth potential working to overcome repair challenges

State Grid Zhenjiang Power Supply Company has successfully used earth potential working technology to complete a distribution transformer repair in a field location in Zhenjiang, Jiangsu province.

Maintenance personnel employed specialized insulated operating rods to perform precise work and quickly resolve the fault. Throughout the process, nearby villagers experienced no power disruptions.

Some areas in Zhenjiang feature a dense river network and complex topography. Distribution transformers in fields are often difficult to access due to narrow, muddy roads that prevent conventional insulated aerial devices from reaching the site.

Previously, repairing faulty equipment required de-energizing the entire line and manually creating access paths. This method was time-consuming, labor-intensive, and caused power interruptions affecting residents and agricultural irrigation.

The earth potential working method overcomes these challenges. It is not constrained by physical space and is highly adaptable, making it an effective solution for complex terrain.

By using insulated tools to indirectly contact energized equipment, workers can eliminate line defects from the ground or the pole structure. This approach minimizes the impact on daily production and life for residents.

Next, State Grid Zhenjiang plans to further optimize the earth potential working process and provide specialized training for complex environments like hills and river networks.

The goal is to expand the application of this technology, offering reliable power support for agricultural production and the lives of residents.