AC/DC hybrid power distribution system based on multi-terminal flexible DC power transmission technology

• Main Authors: Liu Qi, Zhong Dantian, Guo Zhannan, Han Yue, Zhang Guangming, Wang Maojun, Shi Lin, Ye Peng, Hu Yaoning, Gao Qiang
• Format: Patent
• Language: Chinese; English
• Published: 24.08.2016
• 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 AC/DC hybrid power distribution system based on a multi-terminal flexible DC power transmission technology. The technical scheme includes the following steps: 1) the power distribution system is connected with an AC bus and a DC bus through a bidirectional power converter; 2) a direct-driven wind power generation device is connected to the DC bus through a bidirectional power converter; 3) a photovoltaic power generation device is connected to the DC bus through a bidirectional power converter; 4) an energy storage battery is connected to the DC bus through a bidirectional power converter; 5) t a DC load is connected to the DC bus through a bidirectional power converter; 6) the active power of each power converter adopts a master-slave control mode; 7) the power converters used for controlling DC bus voltage perform multi-point fixed DC voltage control on the DC bus; and 8) the power control of the power converters adopts double closed loop control. The AC/DC hybrid power distributi