基于电网“两个细则”的PI控制器优化整定  

“Two Documents”issued by the grid based optimal tuning of PI controller

作　　者：孟庆伟[1] 刘吉臻[1] 王瑞琪[1] 牛玉广[1] 

机构地区：[1]华北电力大学新能源电力系统国家重点实验室,北京102206

出　　处：《电机与控制学报》2013年第10期91-96,108,共7页Electric Machines and Control

基　　金：国家重点基础研究发展计划项目(973计划)(2012CB215203);国家科技支撑计划项目(2011BAA04B01);中央高校基本科研业务费(12QX19);北京市教育委员会共建项目专项资助

摘　　要：基于电网发布的"两个细则"中对于火电厂自动发电技术AGC(Automatic Generation Control)性能的考核,提出了一种适用于AGC机组性能考核的PI优化整定方法。首先根据两个细则提炼优化控制的性能指标kp,然后通过最大化该指标设计了最优PI控制器,并考虑系统的频域特性给出该控制器的优化整定方法。针对典型的功率模型,分别采用该方法与传统的工程整定方法Z-N法和稳定边界法进行仿真对比,控制效果表明本文方法在能保证控制效果的同时可以获得很好的AGC性能指标。Considering the AGC（Automatic Generation Control） performance assessment ruled by the grid issued ＂Two Documents＂, a PI tuning method to adapt to the rules was discussed in this paper. Firstly, the evaluation index kp to optimizing control was refined based on the documents. Then the optimum controller was designed by means of maximizing the kp mean while taking into account the system frequency domain characteristics. For the classical power model, the new method and the traditional engineering methods such as Z-N and Stable Boundary were used respectively to simulate and control to make a comparison. The results show that this method could get better control effects and AGC performance.

关 键 词：AGC PI控制 “两个细则” 性能指标 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]