Electric vehicle and power generator set coordinated frequency control method containing time variant and time lag

• Main Authors: YU XIAODAN, MU YUNFEI, JIA HONGJIE, LI XIAOMENG, DONG CHAOYU
• Format: Patent
• Language: Chinese; English
• Published: 24.11.2017
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES; ELECTRICITY; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERATION; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; PERFORMING OPERATIONS; 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; TRANSPORTING; VEHICLES IN GENERAL

The invention discloses an electric vehicle cluster and power generator set coordinated frequency control method containing time variant and time lag. The method is a power system frequency modulation method by taking an electric vehicle and a power generator set as a control object on the basis that the electric vehicle participates in frequency modulation service of a system, so that the frequency problem caused by increasingly-increasing intermittent energy proportion is solved. Since the electric vehicle has the advantages of fast response speed and V2G capability, and in order to fully utilize the electric vehicle, the electric vehicle has relatively high response priority; in a coordinated control strategy, the method considers uncertainty existing in communication delay in the electric vehicle and system inertia, and an asymptotic stability new criterion capable of simultaneously processing the communication delay and the system inertia is proposed; and moreover, a group of PI controllers are employed