Читать книгу Power Electronics-Enabled Autonomous Power Systems - Qing-Chang Zhong - Страница 43

VSMs are inherently power electronic converters and act upon frequency changes without delay. Since any delayed response increases the maximum frequency change in the event of disturbances, the fast action of VSMs reduces the amount of balancing inertia required before the frequency change is arrested in the event of disturbances. For short frequency spikes, the impact on the system is small because of the relatively large system inertia. A VSM acts upon frequency spikes quickly but also returns to normal quickly after the spikes.