摘要
静止无功发生器是柔性交流输电系统中重要的电力电子装置,针对控制方案复杂的问题,提出一种单周控制的三相四线制静止无功发生器,它可以有效的解决电力工业三相四线制系统的零线电流、无功功率补偿和三相不平衡问题。具有控制器结构简单、控制精度高、补偿效果好的特点。在建立数学模型的基础上进行了仿真研究,仿真结果证明其能有效地补偿系统谐波、零序和无功电流,从而提高输电线功率因数和传输效率。
The static var generator （SVG） is one of the important generation devices in flexible AC transmission systems （ FACTS ）. Aiming at the control complexity of SVG, 3-phase 4-wire SVG based on one-cycle control is presented, it can effectively solve the problem of neutral line current, reactive power compensation, 3-phase load balance in 3-phase 4-wire power system,with simple structure of controller, high precision and effectual compensation. The simulation is carried out on the basis of mathematic model. The simulation results verify that the 3-phase 4-wire SVG with One-cycle Control can effectively compensate reactive power, power harmonics and zero-sequence currents, and improve power factor and transmission efficiency of power lines.
出处
《电子测量技术》
2009年第3期31-34,共4页
Electronic Measurement Technology
关键词
单周控制
静止无功发生器
无功补偿
三相四线制
one-cycle control
static var generator
reactive compensation
3-phase 4-wire
