Recently, the world's first 100 megawatt distributed control energy storage power station located in Huangtai Power Plant successfully completed the grid connection performance test, with the highest efficiency of 87.8%, which is of great demonstration significance for the development of new electrochemical energy storage. The actual scale of the power station is 118MW/212MWh, which will be put into operation at the end of December 2021. The 1500V series energy storage, converter and booster integrated machine of Shangneng Electric is adopted. After nearly a year of operation, the average charging capacity of the whole station can still reach 208.6MWh, and the discharge capacity can reach 181.9MWh, which once again verifies the technical advantages of string energy storage solution, such as better investment, higher income, more intelligent and safe.

As the first batch of energy storage demonstration projects in Shandong, Huaneng has put forward strict requirements and high standards for the safety, reliability, cost reduction and efficiency increase of the energy storage power station of Jinan Huangtai Power Plant. In order to better meet the needs of customers, Shangneng Electric deeply customized 1500V series energy storage PCS integrated machine for the project - not only forms a set of 2.8MW energy storage converter unit by highly integrating 16 EH-0200-HA-M series energy storage converters, but also integrates the main circuit breaker, load distribution protection and other functions at the bottom of the cabinet at the beginning of the scheme design, further saving equipment costs, effectively reducing equipment floor area Reduce on-site construction and operation and maintenance costs.

Compared with traditional solutions, Shangneng Electric's string energy storage solution can achieve one-to-one precise and refined management of battery clusters by PCS, fully release the power of each cluster of batteries, achieve higher returns and faster return on investment; The modular design can be flexibly deployed to ensure that a single battery cluster or a single PCS will not affect the normal operation of other capacities in the event of a failure. The available capacity of the system will be increased by up to 7.5%, reducing the short board effect caused by the imbalance between battery clusters; Support the mixed use of new and old batteries, and make up electricity by stages, effectively reducing the initial investment of the power station.

At the same time, the safety and reliability of Shangneng Electric series energy storage PCS is also better than others. It not only has multiple protection functions such as intelligent internal resistance real-time detection, active early warning, active protection, but also adopts IP66 protection+C5 anti-corrosion design, fearless of various complex application environments; The later operation and maintenance is convenient. The replacement time of PCS module is less than 1 hour, and the on-site replacement is plug and play.

The project adopts an independent operation mode, is included in the provincial power grid dispatching management and is connected to the provincial monitoring platform. It can increase and consume 100 million kilowatt hours of new energy power annually, which is equivalent to reducing coal consumption by about 30000 tons. It can further improve the regulation capacity of Shandong power grid, enhance the stability of the power grid, and effectively improve the problems of large peak valley difference of local power grid load pressure, rapid change, new energy consumption, etc, It provides a reference model for Shandong to promote the research and development, innovative application of new energy storage technologies and accelerate the development of energy storage.

Up to now, Shangneng Electric 1500V series energy storage has created a number of benchmark application cases, and is more competitive in economy, safety and reliability, which is recognized by the market. To welcome the era of energy storage development, Shangneng Electric will continue to increase investment in technological innovation, broaden the track with better products and solutions, create greater value for customers, inject more vitality into the upgrading of the energy storage industry, and help build a zero carbon future.Editor/Xing Wentao