Huaneng refined distributed control technology to create a new high efficiency energy storage power

Recently, STDC learned that the world's first 100-megawatt refined decentralized control energy storage power station independently developed by Huaneng Cleanenergy Research Institute has completed the grid-connected performance test in Shandong, with the highest efficiency of 87.8%, creating a new high efficiency of electrochemical energy storage power station.

Battery energy storage system is mainly used in the industry centralized control mode (parallel battery series group), compared to a decentralized control manner through modular converter (PCS) to achieve the energy storage battery cluster level, independent of fine control, can improve the system capacity, efficiency, safety, and the key technical indicators such as cycle life. After one year of operation, the average charging capacity and discharge capacity of the whole station can still reach 208.6 MWH and 181.9 MWH, and the average efficiency reaches 87.2%. Compared with the centralized control mode, the available capacity of the system is increased by 7.5%, effectively reducing the DC side excess capacity and greatly reducing the construction cost of energy storage power station.

At the same time, the technology can maximize the utilization rate of battery capacity, reduce the "wooden bucket" effect caused by the battery inconsistency, and the long-term operation advantage is obvious. The comprehensive efficiency of the energy storage power station in the first four months reached 82.6%, which was about 3% higher than that of the energy storage power station with local centralized control under the same conditions, effectively reducing the cost of kilowatt electricity in the whole life cycle.

In addition, the fine distributed control technology effectively solves the problems of parallel mismatch and parallel circulation between battery clusters, isolates the risk of fault spread, and improves the system safety. At the same time, the technology is also applicable to a variety of new electrochemical energy storage such as sodium ion battery, solid state battery, and has the scalability.

Huaneng can the qing court, according to a recent hospital based on the intelligent technology to develop a new type of energy management system (EMS), use of whole life cycle of batteries big data intelligent recognition algorithm and the key parameters of fault intelligent diagnosis algorithm, which can realize the battery dynamic cluster of energy balance control, power control system to charge and discharge and power grid fault through the control of unified, So as to comprehensively improve the safety and intelligent management level of energy storage power stations.

Storage and portable energy storage

Safer, group cycle life up to 3000 times; The service life of floating charge is as long as 10 years; Not afraid of high temperature and low temperature impact;

Easy to use, special structure design, easy to install; Strong temperature adaptability, no need to configure air conditioning; Battery support communication function, energy storage system maintenance free;

More efficient, high volume to energy ratio, reduce space consumption; High mass to energy ratio, saving load-bearing requirements; High energy conversion efficiency, energy saving;

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