Abstract: In recent years, power grid has begun to use the transformational control performance standard (TCPS) to assess the level of automatic generation control (AGC) in various regions. However, existing researches only consider the assessment of control performance standard (CPS). In view of this, a dynamic optimization model of AGC units considering TCPS is proposed, which takes the minimum comprehensive adjustment cost of secondary frequency regulation as the objective and the system power balance and TCPS assessment as the constraints. The piecewise functions of the TCPS assessment constraints in the new model are linearized to achieve the efficient solution of the model. Based on a modified IEEE example, an AGC hysteresis control strategy in engineering and CPS, the effectiveness of the model is verified through simulation.