【摘要】 海洋占地球总面积的一半以上,不仅蕴藏着丰富的石油等战略资源,还蕴含着相当规模的电力能源,尤其是近年来受到广泛关注的潮汐能和波浪能。潮汐能是指海水受引力的影响产生周期性涨落运行,具有动能和势能。潮汐能是一种可再生资源,其开发和利用近年来成为一项研究热点。水轮机式潮汐能发电装置是一种将海水涨落转换为电能的发电装置,由于其发电效率高,可靠性高,成为目前应用最为广泛的潮汐能发电装置。水轮机的空化效应会严重破坏轮机叶片,威胁发电机组安全,因此,研究水轮机式潮汐能发电装置的状态检测意义重大。更多还原

【Abstract】 Large hydropower stations and small and medium-sized ones assume different missions and play different roles in power generation for power grids. This requires the automatic generation control(AGC) system to adopt different strategies for load distributing. AGC, as one of the necessary functions for grid connection and power generation of hydropower stations, needs not only to ensure operation safety of hydropower stations but also to consider unit regulation stability and various measures against malfunction. This is not only important to the safety of hydroelectric units, but also promotive to power grid safety. In this dissertation, the AGC load distribution strategy is analyzed when different types(capacity and vibration zones) of hydroelectric units are used to receive dispatching commands; the strategies for avoiding frequent regulation of units and units avoiding vibration zones are analyzed as well.更多还原