NCSDVR Dynamic Voltage Restoration System consists of three core modules: energy storage unit, inverter and static switch. In case of sudden voltage sags, swells or short‑term interruptions on the main grid, the thyristor switches isolate the grid power supply. Super‑capacitors output voltage via the inverter, and the system switches to island‑mode operation to power the load, with a total switching time of no more than 1 ms.