US Patent Issued to Hitachi on June 17 for "Power grid monitoring system and power grid monitoring method" (Japanese Inventors)

ALEXANDRIA, Va., June 19 -- United States Patent no. 12,334,736, issued on June 17, was assigned to Hitachi Ltd. (Tokyo).

"Power grid monitoring system and power grid monitoring method" was invented by Ravikant Pandey (Tokyo), Daichi Kato (Tokyo), Tohru Yoshihara (Tokyo), Shinya Ohara (Tokyo) and Yutaka Kokai (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A power grid monitoring system includes a storage unit that stores power control system (PCS) impedance data indicative of a PCS impedance that is an impedance of a PCS-based energy source at a plurality of operation points, the PCS-based energy source being connected to an electric power system, the PCS-based energy source including a voltage source...