统一潮流控制器相角控制策略与矢量控制策略的量化比较方法  

Quantitative Comparison Methods of a Power-Angle Controlled and Vector-Current Controlled UPFC

作　　者：李海峰 王相锋[2] 陈中[3] 任必兴 杜文娟[2] 

机构地区：[1]国网江苏省电力公司,江苏省南京市210024 [2]华北电力大学电气与电子工程学院,北京市昌平区102206 [3]东南大学电气工程学院,江苏省南京市210096

出　　处：《电网技术》2016年第8期2330-2336,共7页Power System Technology

基　　金：国家电网公司科技资助项目(SGJS0000DKJS1501080);国家自然科学基金项目(51277029);中央高校基本科研业务费专项资金资助(2016XS09)~~

摘　　要：通常统一潮流控制器(unified power flow controller,UPFC)控制策略有相角控制和矢量控制两种,不同控制策略对UPFC性能的影响较大。对二者进行量化比较,借以发现不同控制策略对UPFC性能的影响。首先基于UPFC的基本结构系统介绍了2种控制策略的控制思路,然后利用相对增益矩阵方法和阻尼转矩分析方法分别比较了两种控制策略下对UPFC交互影响的情况和其阻尼控制器向系统提供阻尼的情况。最后,通过4机2区域系统的计算,发现相角控制下UPFC交互影响更大,但是阻尼控制器却可提供更多的阻尼,相应的阶跃响应仿真和故障仿真验证了这一结论。Power-angle control and vector-current control are the two control strategies of UPFC mostly investigated. However, existing research in comparison of the two control strategies was not systematic and concrete enough. For this, this paper devotes to in-depth discussion of comparison in aspects of interaction and damping control. Firstly, this paper lists and compares power-angle and vector-current control strategies based on basic UPFC structure. Secondly, the paper adopts principle of relative gain matrix（RGA） to assess quantitative results of UPFC interaction. Damping torque analysis（DTA） method is applied to compare damping effect of UPFC damping controller. At last, taking two-area four-machine UPFC system as example, calculation and simulation is performed. RGA digital solution shows smaller interaction under vector-current control. DTA results provide conclusion that UPFC auxiliary damping controller based on phase-angle control provides more damping to system. Feasibility of the approaches is proven via simulation result.

关 键 词：统一潮流控制器 相对增益矩阵 阻尼转矩分析 相角控制 矢量控制 

分 类 号：TM721[电气工程—电力系统及自动化]