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导前微分控制在风电水电协同运行中的应用

DOI: 10.13334/j.0258-8013.pcsee.2015.18.004, PP. 4591-4597

Keywords: 风电,水电,风水协同,导前微分控制

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Abstract:

风电的随机性导致大规模风电的接纳成为当前电力系统面临的重要问题。考虑到风电和水电的互补性,提出用水电厂来平抑由于风速的波动性和间歇性导致的风电场输出功率波动,通过控制水轮机实现风水协同运行的控制,使水电厂和风电场向电力系统提供的有功功率按调度计划输出。针对水轮机的特点,提出导前微分控制方案。仿真结果表明,在PID控制基础上并联导前微分控制比常规PID控制方案具有更好的控制效果。风电与水电的协同运行可平抑风电输出功率的波动性,减少对电网的冲击,有利于电网的长期稳定运行。

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