SYMMETRIC METHOD FOR OBTAINING BUS-TRANSLATION-VOLTAGE COMPONENTS INDUCED BY SOURCES AND LOADS AT INDIVIDUAL BUSES IN AC POWER NETWORKS

摘要

A symmetric method for obtaining bus-translation-voltage components induced by sources and loads at individual buses in AC power networks is invented. Two linear expressions of bus injection active and reactive powers in terms of translation voltages and voltage angles of all buses are established according to branch admittances and bus injection powers of sources and loads. Then a linear symmetric matrix-equation model for the steady state of the network is built. Manipulating this model by Moore-Penrose pseudoinverse produces a linear symmetric matrix expression of translation voltages and voltage angles of all buses in terms of bus injection powers. Finally a linear symmetric algebraic calculation formula for obtaining the bus-translation-voltage components is extracted from this matrix expression to achieve obtaining of the bus-translation-voltage components. The set of bus-translation-voltage components provides a new tool for efficiently and accurately regulating bus voltages and guaranteeing good power quality of AC power networks.