Effect of power measurement filter properties on CERTS microgrid control performance

Identification of low‐frequency oscillation mode and improved damping design for virtual synchronous machines in microgrid

“…6 with generator aggregation and Kron reduction [28]. The frequency droop gain is normally below 10% (typically 1%) [29], the bandwidth of inertia filter in the frequency control loop will be lower than that of inner voltage control loop and typically smaller than 100 Hz [8, 30] and the interconnecting reactance of inverter may be in the range of 5 to 10% or even larger with distribution feeder considered [6, 13]. Combination of these parameters will result in a large number of oscillatory cases, the parameters selected in the case studies are typical examples to cover the numerous possible situations.…”