Abstract

This paper deals with the simultaneous tuning of proportional integral controller of static synchronous compensator (STATCOM) associated with lead-lag controller (LL) in order to improve the stability performance of combined wind farm (CWF). This type of farms has been developed to summarize the main benefits of Squirrel-Cage Induction Generator (SCIG) and doubly fed induction generators (DFIG). The performance of CWF with the tuned STATCOM is studied during line-to-line and three-phase faults. Multi-objective Lightning Attachment Procedure Optimization Algorithm (LAPO) is used as an intelligent optimization technique to determine the control parameters which can achieve the specified objective functions; minimizing the error signal and maximizing the output signal. The multi-objective LAPO is used to obtain the optimized values of AC voltage regulator, DC voltage regulator, current regulator, gains and time constant of LL. The ability of STATCOM tuned by multi-objective LAPO is examined by studying the performance of three wind farms. The first one is CWF and two other wind farms; one of them is based only on SCIG (SCIG-WF) and the other based only on DFIG (DFIG-WF) when they associated with the tuned STATCOM LAPO during grid fault. The results show that CWF associated with the tuned STATCOM LAPO has the best performance during grid faults compared with the other wind farms.

摘要

为了改善联合风电场的稳定性能，本文研究了与滞后控制器（LL）相关的静态同步补偿器（STATCOM）的比例积分控制器的同步调整。开发这种类型的养殖场是为了总结松鼠笼式感应发电机（SCIG）和双馈感应发电机（DFIG）的主要优点。研究了在线路故障和三相故障期间使用STATCOM调谐的CWF的性能。多目标闪电附着过程优化算法（LAPO）是一种智能优化技术，用于确定可以实现指定目标功能的控制参数；最小化误差信号并最大化输出信号。多目标LAPO用于获得AC稳压器，DC稳压器，电流调节器，LL的增益和时间常数的最佳值。通过研究三个风电场的性能，检验了多目标LAPO调节STATCOM的能力。第一个是CWF和另外两个风电场。当它们在电网故障期间与调整后的STATCOM LAPO相关联时，其中一个仅基于SCIG（SCIG-WF），而另一个仅基于DFIG（DFIG-WF）。结果表明，与其他风电场相比，与STATCOM LAPO调谐器关联的CWF在电网故障期间具有最佳性能。当它们在电网故障期间与调整后的STATCOM LAPO相关联时，其中一个仅基于SCIG（SCIG-WF），而另一个仅基于DFIG（DFIG-WF）。结果表明，与其他风电场相比，与STATCOM LAPO调谐器关联的CWF在电网故障期间具有最佳性能。当它们在电网故障期间与调整后的STATCOM LAPO相关联时，其中一个仅基于SCIG（SCIG-WF），而另一个仅基于DFIG（DFIG-WF）。结果表明，与其他风电场相比，与STATCOM LAPO调谐器关联的CWF在电网故障期间具有最佳性能。