The invention discloses a
system and method for calculating the
time lag stability upper limit based on the generalized eigenvalue and belongs to the technical field of analysis of the stability of an
electric power system. The
system for calculating the
time lag stability upper limit based on the generalized eigenvalue comprises a
data acquisition module, a
time lag system
processing module, a time
lag upper limit solving module and a result output module, wherein the
data acquisition module, the time
lag system
processing module, the time
lag upper limit solving module and the result output module are connected in sequence. The method for calculating the time lag stability upper limit based on the generalized eigenvalue comprises the steps that network structural parameters, the frequency of an
electric generator and the power angle of the
electric generator are collected, wherein the network structural parameters, the frequency of the
electric generator and the power angle of the electric generator are needed for establishing a time lag system state equation; the time lag system state equation is established,
order reduction is conducted on a parameter matrix in the time lag system state equation, and a time lag system state equation with the order reduced is obtained; a time lag
stability criterion based on an improved free weight matrix is generated; the time lag stability upper limit is solved according to the time lag
stability criterion. According to the system and method for calculating the time lag stability upper limit based on the generalized eigenvalue, the conservation of time lag stability upper limit calculation can be effectively reduced, and the
correctness and effectiveness are high.