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发明公开
CN105896623A 一种基于多端柔性直流输电技术的交直流混合配电系统 无效 - 驳回

一种基于多端柔性直流输电技术的交直流混合配电系统
摘要：
本发明公开一种基于多端柔性直流输电技术的交直流混合配电系统，包含以下步骤：1)配电系统通过双向电力变流器连接交流母线和直流母线；2)直驱式风力发电装置通过双向电力变流器接入直流母线；3)光伏发电装置通过双向电力变流器接入直流母线；4)储能电池通过双向电力变流器接入直流母线；5)直流负荷通过双向电力变流器接入直流母线；6)各电力变流器有功功率采用主从控制模式；7)用于直流母线电压控制的电力变流器；8)电力变流器的功率控制采用双闭环控制。本发明具有高度可控性和灵活性、能独立满足新能源和负荷接入、可以实现负荷控制，对提升城市配电系统的电能质量、可靠性、经济性和运行效率具有重要的现实意义。
摘要（英）：

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 distribution system has high controllability and flexibility, can independently meet the requirements for new energy and load access, load control can be achieved, and the AC/DC hybrid power distribution system has important practical significance to improvement of electric energy quality, the reliability, the economy and the operational efficiency of a city power distribution system.

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