摘要
高压直流输电系统(HVDC)的常规控制普遍采用PI控制策略,该策略是基于固定增益的稳定运行状态进行控制器设计。由于HVDC系统的响应随运行状态的变化而改变,使得电压互感器控制器的性能很难实现最优。本文将粗糙集理论与粒度计算技术相结合,提出了高压直流输电自适应粒度控制器,该控制器可根据HVDC系统运行参数的动态变化对增益大小进行调节,从而使系统的控制性能得到优化,仿真试验结果证明了这一结论。
A proportional intergral （PI） control strategy is commonly used for constant current and extinction angle control in an HVDC system. A PI control strategy is based on a static design where the gains of a PI controller are fixed. Since the response of a HVDC plant dynamically changes with variations in the operating point,a PI controller performance is far from optimum. The contribution of this paper is the presentation of the design of a rough set based, granular control scheme. Experimental results that compare the performance Of the adaptive control and PI control schemes are also given.
出处
《江西电力》
2006年第1期8-10,共3页
Jiangxi Electric Power
