Fig. 4: Comparison of power control processes between passive control and proactive control.

The initial power generation of the three generators G0, G1 and G2 in Fig. 2 is selected as typical values. a Scenario of the passive control strategy. When the gas network failure occurs, G2 first tries keeping its original power generation for as long as possible. After the SAET, it will shut down due to insufficient inlet pressure, resulting in a power deficit. In practice, if such a power deficit is large enough, it may cause load shedding or even blackout of the power system. b Scenario of the proactive control strategy. G2 is required to reduce its power generation to zero before the ALP runs out, while G0 and G1 can fully offset the power deficit in real time, so there is no fluctuation in the power system. As the power generation of G2 is reduced, its maximum operation time exceeds the SAET. Source data are provided as a Source Data file.