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UPFC的交叉耦合控制及潮流调节能力分析
引用本文:刘黎明,康勇,陈坚,朱鹏程.UPFC的交叉耦合控制及潮流调节能力分析[J].中国电机工程学报,2007,27(10):42-48.
作者姓名:刘黎明  康勇  陈坚  朱鹏程
作者单位:华中科技大学,湖北省,武汉市,430074
摘    要:研究了UPFC控制传输线路潮流能力,通过对系统功率平衡及UPFC的潮流控制特性分析,在三维空间中绘出了UPFC各部分的功率运行曲面,为有效选取UPFC各部分的功率容量和判断潮流控制方案的可行性提供了一个直观的手段,说明了在UPFC中采用交叉耦合控制的可行性。利用串联变换器注入传输线路电压的d轴分量控制传输线路上的无功潮流,用q轴分量控制传输线路上的有功潮流。控制系统设计中利用频率特性法得到了功率环PI调节器的参数。实验结果表明采用文中所述的控制策略能够使UPFC有良好的潮流调节性能。

关 键 词:统一潮流控制器  功率平衡  频率特性  交叉耦合控制  潮流调节
文章编号:0258-8013(2007)10-0042-07
收稿时间:2006-10-24
修稿时间:2006年10月24

Cross-coupling Control Scheme and Performance Analysis for Power Flow Control of UPFC
LIU Li-ming,KANG Yong,CHEN Jian,ZHU Peng-cheng.Cross-coupling Control Scheme and Performance Analysis for Power Flow Control of UPFC[J].Proceedings of the CSEE,2007,27(10):42-48.
Authors:LIU Li-ming  KANG Yong  CHEN Jian  ZHU Peng-cheng
Abstract:The paper investigates the power flow control ability of unified power flow controller (UPFC). By analyzing active and reactive power balance, power flow control characteristic of UPFC system, power operation surface plots of UPFC in a three-dimensional space are presented. It provides an intuitionistic measure for choosing effectively power capability of UPFC and judging the feasibility of UPFC power control scheme. A cross-coupling control system with three control loops is adopted. The series converter injected voltage of UPFC is decomposed into two components in the synchronous rotating d-q frame. The d-axis component controls the transmission line reactive power flow. The q-axis component regulates the transmission line active power flow. The PI regulator parameters of power loop are obtained by a frequency characteristic method. The performance of UPFC with the above control scheme was tested in a 15kVA laboratory UPFC setup. Experimental results show that UPFC holds prominent ability in controlling power flow.
Keywords:unified power flow controller  power balance  frequency characteristic  cross-coupling control  power flow regulating
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