智能水电微网控制技术研究

Research on Intelligent Hydropower Microgrid Control Technology

含小水电的山区电网普遍存在单辐射馈线与发供混连现象,当线路故障时,因水电自动化程度低,多采用切机策略,导致水电无法消纳,居民供电可靠性低等问题。文章提出一种智能水电微网技术方案,利用小水电的支撑,采用水库储能方式,组建以小水电为主电源的智能水电微网,通过开发智能水电控制器和微网控制器,对微网系统进行协调控制。以韶关乳源一水电站为试点,成功带负荷离网运行36 h,验证了智能水电微网控制策略的有效性,具有向更多山区电网推广的价值。

The phenomenon of mixed connection of single radial feeders and parallel generation lines is common in Mountain Power Networks with small hydropower. In case of line failure, due to the low degree of automation of hydropower, the machine cutting strategy is often adopted, which leads to the problems that hydropower can not be absorbed and the reliability of residential power supply is low. This paper presents an intelligent hydropower microgrid technology scheme. With the support of small hydropower, an intelligent hydropower microgrid with small hydropower as the main power supply is established by using the reservoir energy storage mode. Through the development of intelligent hydropower controller and micro network controller, the micro network system is coordinated and controlled. The first Ruyuan hydropower station in Shaoguan was taken as a pilot and successfully operated off grid for 36 hours with load.The effectiveness of the intelligent hydropower microgrid control strategy is verified. It has the value of promoting to more mountain power grids.