Patent Document ID: 8626350
Application ID: 12662377
Patent Flag: 1

Claim One:
1. A sliding mode automatic generation control controller, comprising: a sliding mode controller having a plurality of feedback gain inputs, and a control signal output, the control signal output being adapted for connection to a control input of a circuit under control, the feedback gain inputs being adapted for connection to operating point outputs of the circuit under control, the sliding mode controller generating a plurality of switching vectors and, generating a plurality of feedback gain outputs responsive to the operating point outputs and the switching vectors; means for applying a load disturbance to the circuit under control; and a genetic algorithmic optimizer connected to the sliding mode controller, the genetic algorithmic optimizer having an output responsive to the load disturbance, the genetic algorithmic optimizer including: means for searching for optimal values of both the switching vectors and the feedback gain outputs on a predefined search space; and means for determining the optimal values by minimizing a plurality of objective functions used by the genetic algorithmic optimizer, wherein said means for determining the optimal values comprises: means for evaluating a first objective function J 1 characterized by the equation J 1 = ∫ 0 ∞ ⁢ 0.75 ⁢ t ⁢  Δω 1  + t ⁢  Δω 2  + 0.5 ⁢ t ⁢  Δ ⁢ ⁢ P tie  ⁢ ⅆ t , wherein t represents time, Δω 1 and Δω 2 represent first and second changes in frequency, respectively, and ΔP tie represents a change in tie line power; and means for evaluating a second objective J 2 function characterized by the equation J 2 = ∫ 0 ∞ ⁢ ( Δω 1 2 + Δω 2 2 + Δ ⁢ ⁢ P tie 2 + Δ ⁢ ⁢ u 1 2 + Δ ⁢ ⁢ u 2 2 ) ⁢ ⅆ t , whereby Δu 1 and Δu 2 represent changes in first and second inputs, respectively, thereby minimizing frequency deviation and tie line power of the two interconnected electrical power generating systems.