燃煤机组深度调峰瓶颈改善及耦合调峰技术研究  

Improvement of deep peak regulation and comprehensive peak shaving technologies for coal-fired units

作　　者：童家麟 吴瑞康 茅建波 吕洪坤 TONG Jialin;WU Ruikang;MAO Jianbo;LYU Hongkun(Electric Power Research Institute of State Grid Zhejiang Electric Power Company,Hangzhou 310014,China)

机构地区：[1]国网浙江省电力有限公司电力科学研究院,杭州310014

出　　处：《综合智慧能源》2022年第4期43-50,共8页Integrated Intelligent Energy

基　　金：国网浙江省电力有限公司科技项目(5211DS210003)。

摘　　要：随着“双碳”目标下以新能源为主体新型电力系统的加速构建,燃煤机组深度调峰低负荷运行将成为常态,在40%连续经济出力(ECR)工况下,不存在限制机组稳定运行的制约因素,但在向30%ECR乃至更低负荷调峰时,诸多制约因素不应被忽视。提供多种从机组本体角度可有效改善制约因素的技术手段和改造方向及耦合多形态储能,耦合碳捕获、利用与封存(CCUS),多能耦合调节等新型耦合调峰技术。结果表明,通过有效技术手段及改造可极大程度改善机组调峰性能,并可拓展超(超)临界锅炉干态区间达6%以上额定负荷,但仅靠自身已很难满足机组继续下调峰的需求,耦合调峰是未来火电机组进一步增强调峰能力的重要技术手段,且在技术上是可行的。With the development of the new-energy-oriented power system to pursue carbon peaking and carbon neutrality,low-load operation and participation in deep load regulation has become the ordinary state for coal-fired units.Though there is no constraint on the stable operation of the units running at 40%ECR,the constraints for those units at 30%ECR or a lower load should not be ignored. Many technical approaches and transformation are taken to alleviate the intrinsic constraints of the units,and new peak shaving technologies such as those integrated multi-form energy storage,CCUS and multi-energy coupling regulation are proposed.The results show that efficient technical approaches and transformation can improve the peak load regulating performance of units,and raise the dry-wet state transition point of an ultra-super critical boiler by over 6% rated load.Since it is hard to meet the demand of further peak shaving by exploring the potential in a coalfired unit,comprehensive peak shaving technologies is feasible and crucial in further peak shaving regulation.

关 键 词：深度调峰 制约瓶颈 燃煤机组 耦合调峰 额定负荷 碳中和 储能 CCUS 新型电力系统 

分 类 号：TK227.1[动力工程及工程热物理—动力机械及工程]