HEFEI, China , Sept. 17, 2026 /PRNewswire/ -- Sungrow, a globally leading PV inverter and energy storage system provider, recently has achieved a world first by controllably reproducing and successfully suppressing wideband oscillation at a real-world 500 MW solar-plus-storage plant in Qinghai, China. The field test marks a major step toward addressing one of the long-standing challenges facing renewable power systems as renewable penetration continues to increase worldwide.
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Sungrow Achieves World-First Wideband Oscillation Reproduction and Suppression at 500 MW Plant
As renewable penetration rises worldwide, wideband oscillation has become a major challenge, with severe cases potentially causing renewable plants to disconnect from the grid or shut down. In 2014, the BorWin1 offshore HVDC project in Germany experienced oscillations at 250–350 Hz, which damaged filter capacitors on the offshore converter platform and led to a shutdown lasting approximately six months, causing substantial economic losses to the local utility. In 2019, the Hornsea offshore wind farm in the UK experienced widespread disconnection due to subsynchronous oscillation, resulting in a loss o...