Tianwan step-up substation and energy storage station of 2,000MW tidal flat photovoltaic demonstration project of China National Nuclear Corporation will be connected to the grid by the end of this mo

From: Lianyungang Daily Updated: 2024-06-22 10:55

On June 21, journalists witnessed the construction site of the Tianwan energy storage project of the 2,000MW tidal flat photovoltaic demonstration project of China National Nuclear Corporation, where numerous step-up substations and energy storage units were rising from the ground, and a 400-meter-long corridor bridge was connecting the current to the sea. Currently, the on-shore step-up substation and energy storage station of the project have successfully achieved one-time power-on, marking the official operation of the largest on-shore step-up substation of the country’s offshore photovoltaic project and an important step forward for the largest energy storage power station in Jiangsu Province towards the goal of grid-connected power generation.

This project is one of the first offshore photovoltaic projects reported to the State Council for approval in China, and it is also the largest three-dimensional layered sea use project involving the largest sea area in China. The total investment of the project is approximately 800 million yuan, and the project was started in September 2022, with an expected completion and operation by the end of this month.

Entering the project site, the sound of electric current is constantly heard, and 58 sets of energy storage units with 116 energy storage battery warehouses have started to operate. Staff members, dressed in work clothes and wearing safety helmets, are busy at their respective posts. Some are checking the operation of the equipment, while others are recording test data, ensuring the stable operation of the step-up substation with great care. The energy storage battery warehouses, resembling giant “power banks”, contain a continuous supply of clean electricity, constantly charging and discharging to smoothly transmit power to the grid. “While carrying out daily troubleshooting work, we also ensure the cleanliness of the plant area to prepare for the full grid-connected operation by the end of the month.” said Wu, a staff member from the project’s production and operation department. In addition, professional technicians are also present to provide guidance and supervision, constantly paying attention to safety and quality issues during the construction process to ensure the smooth progress of the project.

Currently, some energy storage units have started to supply power, laying the foundation for the grid-connected operation of the entire system. The energy storage area of the step-up substation is expected to provide 400,000 kWh of regulated power each time it discharges, which can meet the daily electricity consumption of 40,000 three-person households. Next, the project will enter the implementation stage of multiple key tasks such as static, dynamic, and communication debugging, continuing to concentrate on on-site safety and hygiene issues and carrying out troubleshooting work.

“The development and construction of this project can effectively promote local economic development, drive the development of the energy storage industry chain, and generate good social and environmental benefits. It has positive significance for improving the power supply structure of the local power grid, promoting the development of the energy storage industry, and developing renewable energy.” said Fan, the project manager. The accelerated progress of the energy storage project has laid a solid foundation for achieving the goal of connecting the energy storage power station to the grid before June 30, and it has also added momentum to the upcoming peak summer power demand in Jiangsu’s power grid.