风电-潮汐综合能源系统连接到复杂电网时基于FACTS装置的电压稳定增强策略

摘要

当离岸风电场和海洋潮汐电场连接到复杂电网时,风速或海洋潮汐流速发生改变或者发生电气故障会引起电压波动,本文提出了一种解决方案.基于一种晶闸管控制电抗器的静态无功补偿装置提出了两种PI控制器,同时提出了用于降低电压波动增强电压稳定性的静止同步补偿器.并对该解决方案的性能进行了比较和分析.离岸风电场利用了流行的Ⅲ型风能转换系统而海洋潮汐电场则利用了通用涡轮式感应发电机,配置两种PI控制器后的离岸风电场—海洋潮汐电场综合能源系统能够从周围环境中获取最大动能.%A solution is proposed to mitigating voltage fluctuations caused by stochastic changes in wind and marine current speeds and also electrical faults in an integrated off-shore wind farm and marine current farm (OWF-MCF) system connected to a complex power grid.Two sets of PI controllers are proposed for a thyristor-controlled reactor (TCR)-based static var compensator (SVC) and also for a static synchronous compensator (STATCOM) to alleviate the voltage oscillations and improve the stability.Performances of the proposed scheme are compared and analyzed.The OWF makes use of the popular type Ⅲ wind energy conversion system while the MCF utilizes a generic induction generator marine turbine,the integrated OWF-MCF energy system with two kinds of proposed controllers is also capable of extracting the maximum kinetic energy from the ambient environment.