单相SVG的基波无功电流跟踪算法  

Tracking Algorithm of Reactive Current in Single-phase SVG

作　　者：杨祥令 郑宏[2] 白雪飞[2] 罗林[2] 

机构地区：[1]浙江省火电建设公司,浙江杭州310016 [2]江苏大学,江苏镇江212013

出　　处：《电气电子教学学报》2009年第4期60-63,共4页Journal of Electrical and Electronic Education

基　　金：江苏省科技攻关计划(BE2007069);江苏省研究生培养创新工程(CH07B_102z)

摘　　要：作为改善电能质量的一种重要手段,静止无功发生器SVG要求快速的检测出负载电流中的无功分量。本文针对直接电流控制的用户端单相SVG,提出一种新的单相无功电流的跟踪算法,该方法通过在一个计算周期内基波周期前后一段数据的比较来快速跟踪无功电流。仿真表明该方法正确可行。仿真波形可以看出,在一个周期内可以实现对无功电流的准确提取,而且对电流变化跟踪效果好,防干扰能力强。算法简单快速,只需两个乘法器,且易于实现。To improve power quality, a SVG（Static Var Generator） is an effective control strategy. The fast and accurate detection of the load current＇s reactive components is the most important stage for the SVG. Against the single-phase client SVG with the direct-current-control-strategy, a simple tracking algorithm of single-phase reactive current detection method is proposed in this paper. The detection algorithm is tracking active current by comparing the sampling data with some before and after a cycle of fundamental supply voltage in the queue and all of these are clone in the calculation cycle. The simulation studies show that the method is correct and feasible. The analysis of simulation waveforms shows that the reactive current can be achieved in a cycle. And, the effect of tracking changes on the current and the anti-jamming capability is obvious. The algorithm is simple and fast, and it needs only 2 multiplication machines in all, and is easy to realize.

关 键 词：SVG 无功电流检测 单相系统 跟踪算法 

分 类 号：TM761[电气工程—电力系统及自动化]