Secondary frequency control refers to the automatic or manual adjustments made in a power system to restore the system frequency to its nominal value after it has been affected by disturbances or changes in load. This process typically occurs after primary frequency control has acted to provide an initial response, and it involves coordination among various generators and grid operators to fine-tune power output and maintain system stability. Effective secondary frequency control ensures that deviations from the desired frequency are minimized and that the overall balance between generation and consumption is achieved.
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