Electric energy router power control method based on two-degree-of-freedom multi-constraint relation

• Main Authors: ZHAO XIAOJUN, GUO ZHONGNAN, WANG XIAOHUAN, KAN ZHIZHONG, BAEK BONG-SEOK, ZHANG CHUNJIANG
• Format: Patent
• Language: Chinese; English
• Published: 23.06.2023
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; SYSTEMS FOR STORING ELECTRIC ENERGY

The invention discloses an electric energy router power control method based on a two-degree-of-freedom multi-constraint relation. The method comprises the following steps: S1, monitoring power grid voltage, load voltage and current and load power; s2, calculating voltages at two ends of a primary side of a transformer, active power transmitted by a power grid, and active power and reactive power transmitted by a series-parallel converter under the action of power grid voltage fluctuation and degree of freedom; s3, establishing a two-degree-of-freedom constraint relation between active power and reactive power according to rated capacity limitation of each part of the system, and calculating a two-degree-of-freedom constraint range of the active power and the reactive power; and S4, loading the two-degree-of-freedom constraint range of the active power and the reactive power obtained in the step S3 into a series-parallel converter control strategy, and performing closed-loop control. The problem that the rate