摘要
HVDC系统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PI控制器的性能很难实现最优。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。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。
PI control policy is commonly used for conventional control of HVDC. This policy is designed to make controller based on regularly enhanced stable operation condition. Because the response of HVDC system changes with the change of operation condition, the performance of PI controller is diMcult to get optimized. Based on combining the rough sets theory with granule computer technology, this paper makes proposals on HVDC adaptive granule. The controller could be adjusted according to the dynamic change of HVDC system operating parameters. As a result, the controlling performance of the system could be optimized. Furthermore, the simulation test proves it.
出处
《东北电力技术》
2005年第12期1-3,共3页
Northeast Electric Power Technology
