中国电机工程学报2016，Vol.36Issue(2)：446-452,601,8.DOI:10.13334/j.0258-8013.pcsee.2016.02.015
负荷指令非线性分解与供热机组协调控制
Nonlinear Decomposition of Load Command and Coordinated Control for Heat Supply Units
摘要
Abstract
With large-scale wind power integration, conventional coordinated control method for coal-fired power plant is not suitable for complicated automatic generation control (AGC) command currently. AGC command was divided into three basic modes. By analyzing the characteristics of different modes, rate limiter for command processing was improved. For rapidly changing inputs, improved rate limiter is equal to rate limiter; for slowly ones, it is equal to first order inertial object. The improved rate limiter can reduce fuel fluctuation caused by command differential. Though power load response to fuel is slow, heat supply unit can change load rapidly by heat net energy storage. First, load command was decomposed by the improved rate limiter. Then, the decomposed commands were set to be feedforward signals for fuel command and heat supply side separately. Thus, a synthesized feedforward-feedback coordinated control method was proposed. Simulation results show that when the AGC load command changes, performance of this control method is better than that of feedforward control by rate limiter decomposition, of which advantages mainly reflects in smaller fluctuation of throttle pressure and fuel.关键词
供热机组/速率限制/前馈控制/信号分解/热网蓄热Key words
heat supply units/rate limiter/feedforward control/signal decomposition/thermal storage in heat supply net分类
信息技术与安全科学引用本文复制引用
刘吉臻,邓拓宇,田亮..负荷指令非线性分解与供热机组协调控制[J].中国电机工程学报,2016,36(2):446-452,601,8.基金项目
国家重点基础研究发展计划项目(973 计划)(2012CB 215203) （973 计划）
中央高校基本科研业务费专项资金项目(2015XS62). The National Basic Research Program of China (973 Program)(2012CB215203) （2015XS62）
The Fundamental Research Funds for the Central Universities (2015XS62). （2015XS62）
