一种新型的统一潮流控制器设计方法

在介绍统一潮流控制器(UPFC)的构成、电压空间矢量脉宽调制技术及带有UPFC单机无穷大系统的 数学模型之后,采用两种控制策略来设计UPFC。第一部分采用电流预测的d q轴解耦控制策略结合电压空 间矢量脉宽调制技术来调节线路有功功率及无功功率。第二部分采用多输入单输出的自组织模糊神经网络和d q轴解耦控制策略并结合电压空间矢量脉宽调制技术来维持节点电压及电容器端电压的稳定。Matlab仿真结果表明:基于以上两种控制策略的UPFC能有效调节线路的有功功率及无功功率,保证节点电压及电 容器端电压的稳定,证明该

Design of a new unified power flow controller

The paper introduces structure of a unified power flow controller (UPFC) voltage-space-vector PWM control technique and the mathematics model of single machine infinite power system including UPFC. Two control strategies are applied to design UPFC. Electric current forecasting d-q axis decouple control and voltage-space-vector PWM control technique are employed to regulate active power flow and reactive power flow. Self-organizing fuzzy neural network of multi-input-and-single-output, d-q axis decouple control and voltage-space-vector PWM control technique are adopted to regulate voltage on bus and voltage on direct circuit capacitor. MATLAB simulation shows that UPFC can effectively regulate active power flow, reactive power flow, voltage on bus and voltage on direct circuit capacitor.