Zhejiang Tenrony’s 12kV outdoor ring main unit contributes to the successful operation of the Nanjing energy storage charging pile project

A large-scale integrated demonstration project of energy storage and charging piles near Nanjing was recently completed and put into operation, effectively alleviating the charging difficulties of new energy vehicles in the region and establishing a new model of coordinated operation of “energy storage-charging-power grid”. In the project, the 12kVoutdoor ring main unit independently developed by Zhejiang Tenrony was used as the core distribution equipment, providing stable and reliable power supply throughout the process and serving as a key support.

Nanjing is a key city for the promotion of new energy vehicles. In recent years, the construction of charging infrastructure has been rapid. However, issues such as distribution stability and environmental adaptability in the coordinated operation of energy storage and charging piles remain. The project is equipped with 20 DC fast charging piles and a supporting energy storage system, capable of serving up to 2,000 vehicle charging demands per day at its peak. It also regulates grid load fluctuations through the energy storage system, imposing extremely high requirements on the reliability, safety, and intelligence of distribution equipment.

In the equipment selection process, Zhejiang Tenrony’s 12kV outdoor ring main unit has stood out due to its performance advantages. The product adopts a fully sealed SF6 insulation structure and can operate stably in extreme environments ranging from -40℃ to 60℃, making it suitable for the climate conditions in Nanjing, which features high temperatures, heavy rainfall, and alternating wet and cold periods. Additionally, it integrates intelligent monitoring and remote control functions, allowing for real-time viewing of operational status and key parameters, enabling early fault warnings and remote operations. This significantly reduces maintenance and operation costs and enhances management efficiency.

The project leader stated that in the initial stage, the stability of the distribution equipment under complex working conditions was the top concern. The alternating high-load operation of energy storage and charging piles places high demands on the equipment's regulation capacity and anti-interference ability. In actual operation, this ring main unit achieved zero faults, with strong short-circuit breaking capacity and high power supply reliability, ensuring efficient system coordination and a power supply reliability rate of 99.99%, far exceeding expectations.

The technical director of Zhejiang Tenrony introduced that this product is the core achievement of the company's research and development for new energy infrastructure. After years of iteration, it has unique advantages in insulation performance, structural design and intelligent control. It has passed the national authoritative testing and holds multiple utility model patents. It is suitable for scenarios such as energy storage, charging piles and distributed photovoltaic. This application further validates its competitiveness.

With the development of new energy vehicles and the advancement of the "dual carbon" goals, the integration of energy storage and charging piles is becoming an important direction for new infrastructure. Through this project, Zhejiang Tenrony has provided high-quality power distribution solutions for regional construction and laid a foundation for the company's expansion in the new energy field. In the future, it will continue to innovate and launch more products suitable for the development of new energy, contributing to the construction of a new power system and energy transformation.

Author: Luna Li