摘要
对无串联变压器型DVR的控制策略进行研究。对无串联变压器型DVR的结构进行介绍,并推导得到相应的等效电路和系统方程。采用dq法对电压暂降进行检测后,应用参数模糊自适应PID控制策略,实现了电压暂降的快速补偿。利用Z-N临界比例度法对PID参数进行整定,构造增量式模糊自整定PID的二维模糊控制器对整定后的参数进行调整并实现电压补偿。通过仿真,将所述方法与PID控制、纯模糊控制、位置式参数模糊自整定PID控制的控制效果进行比较分析,结果表明所提方法的有效性。
Non-series transformer dynamic voltage restorer （DVR） control strategy is studied. The structure of non-series transformer DVR is introduced, and the corresponding equivalent circuit and the system equations are derived. By using the dq method to detect the voltage sag, the fuzzy parameters adaptive PID control strategy is proposed to realize the quick compensation for voltage sags. Z-N critical proportioning method is used to adjust the PID parameter, and a two dimension fuzzy controller for incremental fuzzy self-adjusting PID is constructed to adjust the parameter and compensate the voltage sag. Through simulation, a comparative analysis of control results between the proposed Incremental Fuzzy PID control and PID, Fuzzy, and Positional Fuzzy PID is conducted. The results show the validity of the method.
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2012年第2期56-60,65,共6页
Power System Protection and Control
基金
国家自然科学基金项目(51147010)
浙江工业大学信息处理与自动化技术重中之重学科支持~~
