微电网关键技术及研究现状

Key Technologies and Developing State of Microgrid

微电网技术能够解决传统分布式发电分散接入、单独并网所带来的整体不受控的问题;当发生电网扰动时,其可有效解决单个分布式电源上关键负荷面临的电能质量问题,同时有利于提升电网可控性。从能量管理、控制策略、继电保护等方面阐述了微电网技术近年来的研究热点及发展趋势,讨论了需要解决的若干关键技术问题,结合相关试点示范工程介绍了国内微电网应用研究现状,展望了微电网技术今后的发展方向。

The microgrid technology can solve the whole uncontrolled problem caused by traditional distributed generation dispersant integration and independent grid connection.When there is grid disturbance,microgrid control technology can effectively solve the power quality problem of key load in single distributed power and thus helpful to improve the power grid controllability.The hotspots and developing tendency of microgrid technology in recent years are described in the aspects including energy management,control strategy,protective relaying and so on.Besides,some key technical problems required to solve are also discussed.Combined with the relevant demonstration projects,the domestic application and research situation are introduced and the future development direction of microgrid technology is also proposed.