Patent Document ID: 20180348834
Application ID: 15729461
Patent Flag: 0

Claim One:
1. A method for determining static equivalences of a plurality of physical electrical distribution networks for distributing electric power in power systems, comprising the steps of: acquiring, executed by a processor, node admittance matrices of a physical electrical border node and each of the physical electrical distribution networks of the power systems to distribute the electric power, a first power loss of the each of the physical electrical distribution networks, and a first voltage value and a first current value of the physical electrical border node before a static equivalence state; constructing, by the processor, static equivalence determination conditions for determining static equivalences of the each of the physical electrical distribution networks, wherein the static equivalence determination conditions comprise a consistency of sensitivity equation, a consistency of power loss equation, an equivalent network power balance equation and a Kirchhoff's current equation; calculating, by the processor, based on the node admittance matrices, a second power loss, and a second voltage value and a second current value and according to the static equivalence determination conditions, static equivalent parameters of the each of the physical electrical distribution networks after the static equivalence state; performing, by the processor, equalization on the physical electrical distribution networks; and applying, by the processor, the second power loss, the second voltage value and the second current value to a transmission network connected to the physical electrical distribution networks with consistency of sensitivity and power loss considered for distributing the electric power in the power systems, thus changing in power injection direction from the transmission network to the physical electrical distribution networks being reflected and improving an accuracy of steady-state analysis of the power systems, wherein the transmission network comprises a plurality of components including electrical loads, electrical branches and distribution generators.