ALEXANDRIA, Va., Sept. 24 -- United States Patent no. 12,742,811, issued on Sept. 22, was assigned to ZHEJIANG UNIVERSITY OF SCIENCE & TECHNOLOGY (Hangzhou, China).

"Methods for joint power flow calculation of master-slave systems based on grid-following impedance" was invented by Mengxiao Chen (Hangzhou, China), Wei Liu (Hangzhou, China) and Bomiao Liang (Hangzhou, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a method for joint power flow calculation of master-slave systems based on grid-following impedance, the method including: setting a voltage of a boundary node to an initial value; setting power of the boundary node as a real slave system power, calculating power flow of a master sy...