Diesel-storage hybrid independent micro-grid dynamic frequency stabilization strategy based on virtual synchronous generator

• Main Authors: HU CHAO, ZHANG XING, XU HAIZHEN, SHI RONGLIANG, LI MING, LIU FANG, GU JUN
• Format: Patent
• Language: Chinese; English
• Published: 23.11.2016
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERATION; SYSTEMS FOR STORING ELECTRIC ENERGY; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE

For the problems of rapid change of system frequency and slow recovery speed of a system frequency caused by small inertia and slow dynamic response speed of a diesel generating set in a diesel-storage hybrid independent micro-grid system, the invention discloses a diesel-storage hybrid independent micro-grid dynamic frequency stabilization strategy based on a virtual synchronous generator. The diesel-storage hybrid independent micro-grid dynamic frequency stabilization strategy comprises a virtual synchronous generator control method which can provide inertia and damping support for a diesel-storage hybrid independent micro-grid and can also provide dynamic power compensation. When the diesel-storage hybrid independent micro-grid system is subject to load disturbance, the amplitude deviation of the system frequency can be reduced, and the overshooting of the system frequency in a recovery process can be inhibited to guarantee the rapid recovery of the system frequency, thereby effectively improving the power