有学者详细研究了系统频率变化时双馈感应风电机组的响应情况，认为越来越多

Some scholars have studied in detail the response of doubly-fed induction wind turbines when the system frequency changes, and believe that more and more doubly-fed wind turbines are replacing traditional synchronous generators, which will cause a decrease in system inertia. Because the power electronic converter of the doubly-fed induction wind turbine isolates the motor speed from the system frequency, it prevents the generator from causing system frequency changes. Therefore, the grid-connected operation of large-scale doubly-fed induction fan units will reduce the equivalent inertia of the system. The lower the inertia of the system, the faster the frequency change of the system will be. The above-mentioned documents re-added the inertia response by introducing a frequency-assisted control loop. However, in doubly-fed induction wind turbines, the rotor-side feed power accounts for about 25% of the stator-side total feed power. This part of the slip power has a very close relationship with frequency, and some scholars have not considered the role of the feed power. Some scholars limit the feed power to 1%-2% of the stator side power, which has a large deviation from the actual operating conditions.

Some scholars have studied the response of dual-feed induction wind turbines when the system frequency changes in detail, and think that more and more double-feed wind turbines replace traditional synchronous generators, which will cause the decrease of system inertia. Because the power electronic transdystor of the dual-feed induction wind turbine isolates the motor speed from the system frequency, it prevents the generator from causing the system frequency change. Therefore, large-scale dual-feed induction fan unit grid operation will reduce the system equivalent inertia, the lower the system inertia, the faster the frequency change of the system. The above literature re-adds the inertial response by introducing the frequency auxiliary control ring. However, in a dual-feed induction wind turbine, the rot side feed power accounts for about 25% of the total feed power of the styran side, and this part of the differential power is closely related to frequency, and some scholars have not considered the role of the feed power. Some scholars limit the feed power to 1%-2% of the synth side power, which is biased from the actual operation.

Some scholars have studied the response of doubly fed induction wind turbines when the system frequency changes in detail. They think that more and more doubly fed induction wind turbines replace the traditional synchronous generators, which will cause the decrease of system inertia. Because the power electronic converter of doubly fed induction wind turbine separates the motor speed from the system frequency, it prevents the generator from causing the system frequency change. Therefore, the grid connected operation of large-scale DFIG will reduce the equivalent inertia of the system. The lower the inertia of the system, the faster the frequency change of the system. The inertia response is added again by introducing frequency auxiliary control loop. However, in doubly fed induction wind turbine, the feed power of rotor side accounts for about 25% of the total feed power of stator side. This part of slip power is closely related to frequency, and some scholars have not considered the role of feed power. Some scholars limit the feed power to 1% - 2% of the stator side power, which is quite different from the actual operation.<br>