EFFICIENT POWER GRID ANALYSIS ON MULTIPLE CPU CORES WITH STATES ELIMINATION

摘要

A method for calculating voltage values in a power grid, including: obtaining a primary circuit representation (PCR) corresponding to the power grid and including: multiple nodes separated by multiple impedances; and an independent source connected to one node; identifying a high degree node; obtaining a modified circuit representation (MCR) by connecting, in the PCR, an auxiliary voltage source having an auxiliary voltage value to the high degree node, the MCR including a modified characteristic matrix and a modified source vector; calculating a modified state vector based on the modified characteristic matrix and the modified source vector; generating an admittance matrix based on the multiple impedances and the auxiliary voltage; obtaining an auxiliary voltage adjustment value using the admittance matrix; obtaining a primary state vector by adjusting the modified state vector using the admittance matrix and the auxiliary voltage adjustment value; and obtaining the voltage values from the primary state vector.

主权项

1. A method for calculating voltage values in a power grid, comprising:
obtaining a primary circuit representation corresponding to the power grid and comprising:
a plurality of nodes separated by a plurality of impedances; andan independent source connected to one node of the plurality of nodes; identifying a high degree node from the plurality of nodes; obtaining a modified circuit representation by connecting, in the primary circuit representation, an auxiliary voltage source having an auxiliary voltage value to the high degree node, wherein the modified circuit representation comprises a modified characteristic matrix and a modified source vector; calculating a modified state vector based on the modified characteristic matrix and the modified source vector; generating an admittance matrix based on the plurality of impedances and the auxiliary voltage; obtaining an auxiliary voltage adjustment value using the admittance matrix; obtaining a primary state vector, wherein obtaining the primary state vector comprises adjusting the modified state vector using the admittance matrix and the auxiliary voltage adjustment value; and obtaining the voltage values from the primary state vector.