两炉一机中间再热CFB机组热力系统的控制策略及应用  

Control Strategy and Its Application of an Intermediate Reheat Unit with One Turbine and Two CFB Boilers

作　　者：张戟 顾君苹 张缦[2] 奇云峰 王卫良[2] 吴玉新[2] ZHANG Ji;GU Junping;ZHANG Man;QI Yunfeng;WANG Weiliang;WU Yuxin(Electric Power Research Institute of State Grid Liaoning Electric Power Co.,Ltd.,Shenyang 110006,China;Key Laboratory for Thermal Science and Power Engineering of Ministry of Education,Tsinghua University,Beijing 100084,China)

机构地区：[1]国网辽宁省电力有限公司电力科学研究院,辽宁沈阳110006 [2]清华大学热科学与动力工程教育部重点实验室,北京100084

出　　处：《锅炉技术》2019年第6期33-38,共6页Boiler Technology

基　　金：国家自然科学基金项目(U1810126)

摘　　要：为研究两炉一机中间再热机组的控制策略,以越南锦普电厂“两炉一机中间再热母管制CFB”机组为研究对象,介绍了该机组的系统设计及运行参数。通过分析“两炉一机中间再热”机组的控制难点,研究针对该类机组的特殊性,给出了其自动化控制策略。对旁路系统中并汽母管压力调节控制、机组并汽后差压备用控制以及超压时压力稳定调节控制进行了详细的描述。并着重介绍了运行过程中再热蒸汽的流量分配及汽温调节控制方法。通过现场并汽试验、甩负荷试验以及负荷扰动试验,验证了本机组自动化控制策略的成功应用,肯定了其自动化控制水平,为“两炉一机中间再热”机组的设计及控制策略提供了技术参考。In order to study the control strategy of one turbine - two boilers intermediate reheat unit, an intermediate reheat unit with one turbine and two CFB boilers was introduced. The system design and operating parameters were shown in this paper. After analyzing the control difficulties, the control strategy for this type of unit was proposed based on the specifics of the unit. The control methods of different systems, especially the bypass system and distributions of flow and temperature of reheated steam in reheat system, were comprehensively presented. The operating performance of this control strategy for the unit were verified based on the analyses of engineering test results.

关 键 词：两炉一机 中间再热 循环流化床 控制策略 运行性能 

分 类 号：TK229.66[动力工程及工程热物理—动力机械及工程]