Patent ID: 9342059
Filing Date: 2016-05-17
CPC Classification: G05B,G06F,H02J,Y02E

Claim Text:
1. An automatic voltage control method based on a cooperative game theory, comprising acts of: S where k is a series number of a power system state, N C is the number of contingencies, u 0 is a control variable vector, x 0 is a state variable vector in a pre-contingency state, x k is a state variable vector in a k th post-contingency state, a constraint equation g 0 (x 0 ,u 0 )=0 is a power flow equation of the power system in the pre-contingency state, g k (x k ,u 0 )=0 is a power flow equation of the power system in the k th post-contingency state, u is a lower limit of the control variable vector, ū is an upper limit of the control variable vector, x is a lower limit of the state variable vector in the pre-contingency state, x is an upper limit of the state variable vector in the pre-contingency state, EI is an economy index of the power system, SI is a security index of the power system, and SI Base is a security index of the power system before an automatic voltage control instruction is performed, min means minimize and s.t. means subject to; S the economy model (2) is: where ε u is a relaxation vector of the lower limit u of the control variable vector, ε u is a relaxation vector of the upper limit ū of the control variable vector, ε x is a relaxation vector of the lower limit x of the state variable vector in the pre-contingency state, and ε x is a relaxation vector of the upper limit x of the state variable vector in the pre-contingency state; and the security model (3) is: S S