The mobile substation on trailer is a prefabricated, transportable solution that integrates key components such as zinc oxide surge arresters, high-voltage switchgear (GIS or HGIS), power transformers, medium-voltage switchgear, AC/DC integrated power supply systems, measurement instruments, monitoring and protection devices. All components are mounted on one or more semi-trailers.
The "mobile" aspect is realized through its trailer-based construction, allowing rapid deployment and connection to the power grid with minimal on-site wiring and commissioning. The "intelligent" aspect is reflected in its advanced secondary system design, featuring a three-layer device architecture and dual-network structure to achieve full automation, digitalization, and interaction within the substation system.
Traditional substations are typically stationary and cannot meet the growing demands for flexible and rapid power supply in modern power systems. The trailer-mounted mobile substation is designed to:
Restore power supply rapidly in case of unrecoverable faults such as short circuits in fixed substations.
Enable load transfer during renovation or expansion projects, reducing transition costs and minimizing disruptions to industrial and residential users.
Address seasonal demand imbalances, such as peak load increases during summer, by temporarily increasing regional supply capacity.
Ensure reliable power during major national or international events such as the Olympics, World Expo, or National Games, where power continuity is critical.
Economic and operational benefits include:
Immediate replacement of damaged substations in emergencies, reducing power outage losses.
Temporary capacity enhancement in specific areas or projects to boost grid reliability.
Reduced losses from planned outages during equipment maintenance.
Substitution for backup transformers in certain regions, lowering investment and maintenance costs for permanent substations.
