Structural analysis and control of voltage stability in electric power network

In this paper, a method of structural analysis and control of voltage stability in electric power system is proposed based on Generalized Tellegen´s theorem. According to the change of power network topology structure, power network will be divided into fundamental network and derivative network. Because Generalized Tellegen´s theorem can connect the network topological structure and parameter with port load parameters, the network structure matrix of voltage stability is established. re-distribution rule of increments of ldquoself-admittancerdquo to ldquomutual-admittancerdquo in matrix A is presented and discussed. The analysis and simulation results indicate that the proposed method is a feasible and effective.