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| 摘要: |
| 提出触发角修正反馈阻抗控制策略,与常规阻抗误差反馈修正命令阻抗的方式相比,避免了每次修正后都需查表求触发角,提高了底层响应速度.可控串联补偿(TCSC)采用非线性控制方法进行阻抗闭环控制效果最佳,但所需数据量大,实现困难.设计触发角修正变结构PID阻抗控制器:在测量阻抗第1次到达或接近命令阻抗之前,积分环节参数为0,即为PD控制器;之后则投入积分环节,恢复为PID控制器.当TCSC从不同的阻抗值阶跃到同一阻抗值时,误差累加器的值接近,从而可以得到非常接近的控制效果.数字仿真和动模实验结果表明该控制策略超调小、响应速度快,并能快速消除偏差,具有良好的动态和静态性能,且结构简单,易于工程实现. |
| 关键词: 可控串联补偿 阻抗控制 触发角修正反馈 变结构PID控制 动模实验 |
| DOI： |
| 分类号:TM761 |
| 基金项目:山东省科技攻关计划项目? |
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| Impedance control strategy of thyristor controlled series capacitor |
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LI Kejun1 ZHAO Jianguo2 GAO Hongxia1
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| Abstract: |
| An impedance control strategy based on firing-angle modification feedback is proposed,which compared with that based on impedance error modification feedback,avoids the firing-angle table search for each modification and speeds up the response of low-level control.For the best control,the close-loop impedance controller of TCSC(Thyristor Controlled Series Capacitor) should adopt the nonlinear control theory,but it needs too many data.A variable-structure PID controller based on firing-angle modification is ... |
| Key words: thyristor controlled series capacitor impedance control firing-angle modification feedback variable-structure PID dynamic simulation |
