Cutting, sewing, ironing, packaging In the clothing production workshop, workers are rushing to make orders. As a leading enterprise in the production of fashionable women's clothing in our district, Hangzhou Yifengge Clothing Co., Ltd. has an annual output of up to 2.4 million pieces of clothing. However, the daytime operation of the factory does not rely on traditional power supply, but on large energy storage stations installed inside the factory area.

        This enterprise has the characteristic of dual peak load for electricity production. The energy storage power station stores energy during valley periods and discharges during peak and off peak periods, saving the enterprise millions of electricity bills per year. Tu Tiebo, a staff member of State Grid Hangzhou Linping District Power Supply Company, said that this giant "power bank" weighing more than 300 tons is the first user side "long-term energy storage" project in the province, with an annual energy storage capacity of about 1 million kWh and a power of up to 500 kW. Using the "peak shaving and valley filling" mode, the energy storage station can discharge for up to 10 hours at a time, which is equivalent to providing 5000 kWh of electricity when fully charged. This not only covers the daytime electricity demand of factories, It can also reduce load fluctuations and improve the stability and reliability of the power grid.

        At the same time, a photovoltaic project has been built on the roof of the park, where solar photovoltaic panels continuously convert solar energy into clean electricity for use in production lines, office buildings, and other applications. For electricity that exceeds demand, the system will automatically transport it to energy storage stations for storage, reducing the cost of electricity for enterprises and promoting the achievement of low-carbon goals.

       There are many flammable materials in clothing factories, and production safety is crucial. There is usually a certain risk of combustion in energy storage equipment, but this reserve power station does not have similar troubles, "said Tu Tiebo. The energy storage power station uses all vanadium flow batteries, which mainly rely on the back and forth circulation of aqueous electrolyte and storage tanks to achieve heat dissipation. There are no problems such as thermal runaway or short circuits. Compared with traditional lithium batteries, it not only has a long service life, but also has significant advantages in safety and environmental protection.

       Not only that, the project is also equipped with a digital intelligent platform that relies on real-time monitoring, diagnostic alarms, panoramic analysis of microgrids, and other functions to maximize energy efficiency while improving the operational safety factor of the storage power station.

      Connecting enterprises with giant green "power banks" has opened up an affordable, green and efficient energy solution path, and has become an important component of promoting the construction of smart grids. It is reported that in addition to user side scenarios, the all vanadium flow battery energy storage system can also be widely applied to the power generation side and grid side, and is an important equipment foundation and key supporting technology for new energy applications and new power construction. At present, the development of new energy storage industry has entered the 'fast lane'. We hope to accumulate valuable technology and experience through the construction and operation of this project, and promote the diversified and high-quality development of new energy storage technology, "said the relevant person in charge of State Grid Hangzhou Linping District Power Supply Company.

       The energy storage power station is built by Hangzhou Dehai Aike Energy Technology Co., Ltd., a company in the Grand Canal Science and Technology Innovation City. Since its establishment in 2017, Dehai Aike has always adhered to the leadership of technological innovation, focusing on the research and production of all vanadium flow battery materials, stacks, and systems, providing energy storage system design, construction, and maintenance services. The company will seize opportunities, actively layout and expand the vanadium battery market, promote technological innovation with a forward-looking scientific research positioning, and achieve technological leadership, "said the relevant person in charge of Hangzhou Dehai Aike Energy Co., Ltd.