Flywheel energy storage participates in grid frequency regulation

The participation of a flywheel energy storage array in primary frequency regulation can effectively enhance frequency stability and improve grid security. [pdf]

Voltage regulation of photovoltaic inverter

Grid reinforcement, active power curtailment and supercapacitors reduce the magnitude of voltage fluctuations. Supercapacitors are most successful in mitigating problematic voltage fluctuations. [pdf]