SVG的自适应控制方法研究

Research on the Adaptive Control Method of SVG

针对静止无功发生器在传统比例积分(简称PI)控制方法下,固定的PI参数值无法满足在电网环境发生改变时的补偿性能这个问题,笔者提出一种自适应控制方法。通过分析静止无功发生器的结构及工作原理,详细介绍了自适应控制方法的原理;并结合某煤矿电网的负载情况,对静止无功发生器进行了系统仿真,同时通过与传统PI控制方法下的仿真结果进行了对比分析,验证了文中所提出控制策略的优越性。为了进一步的验证在实际应用中的可行性,搭建了实验平台。实验结果表明了自适应控制算法的有效性,该控制方式具有响应快、稳定性好、抗负载扰动能力强等优点。

For static vat generator （SVG） under the traditional PI control method of fixed PI parameter value can- not meet the compensation performance when the grid environment changing, an adaptive control method is pro- posed. On the basic of the analysis of the structure and working principle of SVG, the principle of adaptive control method is introduced in detail.A combination of load conditions of a coal mine power grid, the SVG system is sim- ulated. The simulation results are compared with the traditional PI control method, the superiority of the proposed control strategy is verified. For further validation of the control method feasibility, the experimental system is built. The experimental results verify the effectiveness of the adaptive control algorithm. The proposed control method in this paper has fast response, good stability and the disturbance ability is strong.