ENERGY INDEPENDENT ARCHITECTURE

Grid-side independent energy storage project

This project marks the first 220kV voltage level new energy storage power station in Foshan Power Grid, with a construction scale of 208MW/416MWh. 9 sets of Zhiguang Electric's independently developed and technically leading High-Voltage Cascade Direct-Mounted Energy Storage Systems will be deployed, configured with full liquid-cooling technology, and the whole energy storage power station adopts Zhiguang Electric's “5S” full-stack technology to realize the whole life cycle management, monitoring and control of the energy storage system.After the project is completed and put into operation, it will provide auxiliary services such as frequency regulation and peak shifting for the power grid, effectively enhance the power supply reliability of the Foshan regional power system, promote new energy consumption, and play an important role in promoting the development of Guangdong's new electric power system, and the project is expected to be completed and put into operation in June 2025. [pdf]

Energy storage battery cabinet processing

This article will introduce in detail how to design an energy storage cabinet device, and focus on how to integrate key components such as PCS (power conversion system), EMS (energy management system), lithium battery, BMS (battery management system), STS (static transfer switch), PCC (electrical connection control) and MPPT (maximum power point tracking) to ensure efficient, safe and reliable operation of the system. [pdf]

Energy storage battery profit comparison

For example, the average revenue of an Electric Reliability Council of Texas (ERCOT) battery in 2023 was $182 per kilowatt per year, but the best-performing asset in the same region was closer to $300 per kilowatt per year, a 60 percent increase. 4 Similar dynamics—where there is a large spread between the best and worst performers—are observed in other grid-scale battery markets, such as the United Kingdom. 5 A variety of factors, including design choices such as battery duration and commercial strategy, can affect these outcomes. [pdf]

Common topologies of energy storage power supplies

Most popular topologies in this regard include the Dual Active Bridge with Extended Phase Shift (for example in TIDA-010054) which deals with a primary voltage of 700V to 800V DC, and secondary voltage of 350V to 500V DC (single-phase-shift SPS) or 250V to 500V (extended-phase-shift EPS) for power levels up to 10 kW, Phase-shifted Full-Bridge (for example in PMP22951) which deals with a voltage of 400V down to 54V and a power level of 3kW or CLLLC Dual-Active Bridge (for example in TIDM-02002) which deals with a primary voltage range of 380–600V to a secondary voltage range of 280–450V and power levels up to 6.6kW. [pdf]

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