Patent Document ID: 9164499
Application ID: 13914270
Patent Flag: 1

Claim One:
1. A static security constrained automatic voltage control method, comprising: performing a single automatic voltage control calculation for a control snapshot of a power system at a beginning of a control cycle in each control cycle according to a requirement of a power grid operation for an automatic voltage control when on-line conducting at a power grid control center, wherein the single automatic voltage control calculation comprises steps of: (1′) obtaining a single-time severe contingency sequencing table and a periodical severe contingency sequencing table from a historical severe contingency information database, and selecting severe contingencies from a contingency set C All according to the single-time severe contingency sequencing table and the periodical severe contingency sequencing table to compose an active contingency set C Active of the single automatic voltage control calculation; (2′) solving a trial solution of an optimal power flow model, using the trial solution of the optimal power flow model as a base state of the power system, and performing an iteration between a first result of the contingency assessment for the active contingency set C Active and the trial solution of the optimal power flow model to solve and obtain a single automatic voltage instruction; and (3′) performing a contingency assessment for the contingency set C All using the trial solution of the optimal power flow model as the base state of the power system to obtain a second result of the contingency assessment, and updating the single-time severe contingency sequencing table and the periodical severe contingency sequencing table according to the second result of the contingency assessment, in which the updated severe contingency sequencing table is to be used in a next single automatic voltage control calculation.