350MW超临界循环流化床机组超低负荷控制技术研究与应用  

Research and Application of Ultra-low Load Control Technology for 350 MW Supercritical CFB Unit

作　　者：庞东林 张伟 付立龙 PANG Donglin;ZHANG Wei;FU Lilong(Inner Mongolia Jingneng Shuangxin Power Generation Co.,Ltd.,Erdos,Inner Mongolia 017000,China)

机构地区：[1]内蒙古京能双欣发电有限公司,内蒙古鄂尔多斯017000

出　　处：《山西电力》2024年第5期54-57,共4页Shanxi Electric Power

摘　　要：为了实现“双碳”目标,降低二氧化碳排放量,进一步提高电网大规模消纳清洁能源的能力,需要充分挖掘火电机组的深度调峰潜力,在解决“弃水、弃风、弃光”难题的同时,保障火电机组超低负荷的安全稳定运行。以内蒙古某350MW超临界循环流化床机组为例,研究发现该机组在负荷低于120MW以下时协调自动退出,分散式控制系统原始设计及调试均以半负荷工况为基准,未考虑在低负荷情况下的调峰调频需求。通过对该机组协调控制系统逻辑优化改造,使其在维持锅炉不转态的前提下,能满足机组30%~100%负荷区间协调自动控制的持续运行,实现了深度调峰并且满足了电网调频要求。In order to achieve the goals of“Carbon Peaking and Carbon Neutrality”,reduce carbon dioxide emissions and further improve the capacity of the power grid to consume clean energy on a large scale,it is necessary to fully tap the deep peak regulation po-tential of thermal power units.While solving the problems of“water abandonment,wind abandonment and light abandonment”,it’s al-so necessary to ensure the safe and stable operation of ultra-low load thermal power units.Taking a 350 MW supercritical circulating fluidized bed(CFB)unit in Inner Mongolia as an example,it is found that the unit automatically exits when the load is below 120 MW.The original design and commissioning of the distributed control system are based on the half-load condition without considering the demand for peak and frequency regulation under low-load condition.By optimizing the logic of the coordinated control system of the unit,the continuous operation of the coordinated automatic control of 30%~100%load range of the unit can be achieved under the premise that the boiler is not running.Thus,deep peak regulation is realized and the frequency modulation requirements of the power grid are also met.

关 键 词：循环流化床 超低负荷 协调控制 深度调峰 

分 类 号：TM621[电气工程—电力系统及自动化]