摘要
以火电厂典型过热汽温控制系统为研究对象,推导了串级控制系统最小方差性能评价指标的计算方法,利用MATLAB平台搭建仿真模型,理论推导反馈不变项得到控制系统的最小方差;通过模型输出计算等价单回路PID控制器的最小方差和时间序列分析最小方差,结果表明等价单回路PID控制器的最小方差能够实现最小方差性能评价,并利用某电厂实际的正常运行数据对研究的结论进行了验证。
The typical power plant superheated steam temperature control system Used as research objects, which derived minimum variance cascade control system performance index is calculated, and using the MATLAB platform to build simulation models, theoretical derivation of the feedback control system of the same item are minimum variance; by Output of the model is equivalent to a single loop PID controller calculation of the minimum variance and minimum variance time series analysis, the results show that the equivalent single - loop PID controller to achieve minimum variance minimum variance performance evaluation, and use the actual running of a power plant data. The conclusions were validated.
出处
《电力科学与工程》
2011年第7期45-50,共6页
Electric Power Science and Engineering
