双DSP冗余控制的新型静止无功发生器控制器设计

Design of static var generator controller with dual-DSP redundant control

为了提高静止无功发生器向电力系统输送无功功率的实时性与精确性,设计了一种双DSP控制的新型静止无功发生装置(SVG)。介绍了控制系统的硬件、软件构成和功能,给出了无功电流检测及直流电压的控制方法。具有控制器结构简单、控制精度高、补偿效果好的特点。给出了SVG用于补偿无功功率以及改善电压质量时的仿真波形。仿真结果表明,该装置能有效地补偿系统无功功率和因负荷无功功率引起的电压下降,从而提高输电线功率因数和传输效率。

In order to improve real-time performance and the accuracy of SVG, the Static Var Generator based on the dual-DSP controller was designed, with simple structure of controller, high precision and effectual compensation. The hardware/software configuration and function of controller system were introduced, the detection of reactive current and method of DC voltage control were given. The waveforms of simulation that SVG was applied to compensate reactive power and improve voltage quality were given. The simulation results verify that the SVG can effectively compensate reactive power and voltage drop that caused by reactive power of load, and improve power factor and transmission efficiency of power lines.