An AGC Allocation Parameter Optimization Method Considering the Characteristics of Generator Valve Controllers

Performances of AGC and generators’ valve controllers, connected through AGC allocation strategy, both influence active power balance in power systems. In this paper, authors consider that when distributing the whole regulation demand, AGC should give consideration to the bottom-level generator valve controller’ performance. Following this idea, an AGC allocation parameter optimization method is proposed considering valve controllers’ characteristics. Area Control Error (ACE) is selected as optimization criterion and optimal distribution coefficients are calculated under associated constraints, thus improving control performance of power system frequency and tie-line transmission power. The simulation of two-area system with four generators shows the effectiveness of the proposed method. Keywords-automatic generation control; valve controller; allocation parameter; optimization method