Abstract
A multivariate statistical analysis (MSA)-based power-grid-partitioning method is proposed. Considering the effectiveness of automatic voltage regulation of generators, network modelling is based on the quasi-steady-state sensitivity of voltage with respect to reactive power. The MSA-based power-grid-partitioning method contains two stages: a quantitative method for determining the appropriate number of zones and allocation of nodes into a number of zones. The proposed method is applied to an automatic voltage control system and an N − 1 robust pilot node selection method is presented. Simulation studies on IEEE 14-bus, 39-bus systems and a real provincial power system in China are described to illustrate the effectiveness of the proposed method.
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