Optical storage-virtual synchronous generator stability analysis method

• Main Authors: NIU HAOMING, YANG YONG, QI YING, ZHAO JINGUO, YANG RUI, HE XIN, CHEN SHIBIN, LIU WENFEI, XIE YINGZHOU, HAO RUHAI, ZHANG XUJUN, JIN YONGSHENG, ZHENG WEI, NIU ZHEN
• Format: Patent
• Language: Chinese; English
• Published: 23.05.2023
• Subjects: CALCULATING; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; COMPUTING; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; ELECTRICITY; GENERATION; PHYSICS; SYSTEMS FOR STORING ELECTRIC ENERGY

The invention provides an optical storage-virtual synchronous generator stability analysis method, and belongs to the technical field of virtual synchronous generator control modeling and stability. The method comprises the following steps: aiming at an optical storage-virtual synchronous generator grid-connected system, establishing a virtual synchronous generator dq domain model based on a harmonic state space theory; taking the control parameter sensitivity under multiple frequency domains as an index, and determining a key control parameter influencing a dominant mode; analyzing the stability domain of the optical storage-virtual synchronous generator system under different key control parameters and different power grid intensities; wherein a characteristic root related to a voltage inner ring and a power ring in the optical storage-virtual synchronous generator system is a dominant mode. According to the method, the stability of the virtual synchronous generator grid-connected system can be effectively