The high-voltage direct-mounted energy storage completely adopts the cascading topology of high-voltage SVG, canceling the booster transformer, and the batteries are dispersed in dozens of PCS unit modules, running independently of each other, and the coupling degree is low. The thermal standby redundancy design for each phase significantly improves reliability. The high voltage direct-mounted energy storage system adopts advanced active balancing technology, and makes overall consideration and hierarchical control at three levels: application layer, converter chain layer and PCS unit layer, achieving high-level SOC balancing performance of battery packs, and solving the main problems affecting the safety of lithium batteries such as battery overcharge and over-discharge and circulation.
Feature:
1. Improved the safety of battery operation
2. Sharp reduction in investment costs
3. The operation loss has decreased by more than 80%, and the energy-saving effect is huge.
4. Energy storage and SVG are combined into one.
5. The response time is fast.
6. Greatly improve the low-voltage ride-through characteristics of SVG .
