The method of selecting control actions for entering post-emergency conditions within acceptable ENERGY Under the terms of aperiodic static stability area in view of the change in frequency

摘要

A method for selecting control actions to enter disaster mode power system allowable on the condition aperiodic region static stability with the frequency change based on the determination using the current values ​​of the parameters of the electrical mode disaster and limit post-fault mode parameters dangerous section and permissible under the terms of static aperiodic stability overflow active power in the dangerous section, zaklyuchayuschiysyav that the measured and dostoverizovannym Parameters prefault electrical mode power system and a signal of the actuation trigger body is determined taking into account changes in the frequency moduli and phases of node voltages established disaster and limit post-fault in the power system by solving two subsystems equations: linear equations active power balance changes at the nodes for all the nodes except for the reference that can carry out a forecast change nodal voltages and phases in emf generators post-fault mode, in the form: where Δφ - vector changes in node voltages phases during a mode change; D - calculated vector active power imbalances in the circuit nodes; C - a real symmetric matrix whose entries are expressions of the form where - the voltage at the ends of branches at the nodes i, j;, - modules conductivity respectively and the transformation ratio between branch nodes i, j; and nonlinear current balance equations nodes of the circuit in the form where a - known conductances complex matrix network, which includes diagonal elements and conduction loads, calculated according to