提升燃煤火力发电灵活性是促进新能源消纳,实现能源绿色低碳转型和安全保障的重要抓手,构建完善的燃煤发电灵活性标准体系是推动燃煤火力发电灵活性发展的关键环节。围绕燃煤火力灵活发电内涵,分析了当下火力燃煤发电灵活性改造建设面临的4个主要挑战:灵活性指标难突破、灵活性下安全问题突出、灵活性下经济性指标大幅下降、灵活性下清洁性难保障。应对4个挑战,初步构建了综合考虑目标、专业门类和功能序列的燃煤发电灵活性标准体系框架,覆盖通用、设计、制造、安装、试验、计量、运行、评价等流程。结合燃煤发电灵活性发展现状以及相关标准情况,提出将灵活性标准术语及评价、机组灵活性安全运行和寿命评价、燃煤机组灵活性运行下效率评价、二氧化碳检测及污染物排放控制、燃煤火力发电机组在线监控等作为重点标准建设领域,其中效率评价方法重点考虑非稳态及深度调峰非常态工况,特别重视煤质、煤流等燃料侧在线监测技术及耦合燃料-燃烧-工质流动等灵活控制标准的建立。标准体系框架的构建及相关建议的提出,为我国燃煤火力发电灵活性标准修订提供参考。

Enhancing the flexibility of coal-fired power generation is a crucial for promoting clean energy consumption,green-orientedtransition of energy and energy security guarantee. The construction of a comprehensive standard system for the flexible coal-fired power generation is a key step for promoting flexible coal-fired power generation development. Based on the essence of flexible coal-fired power generation,the current reconstruction and construction of flexible coal-fired power generation face four main challenges were proposed,such as difficulties in breaking through on flexibility indicators,prominent safety issues under flexibility,a significant decline in economicindicators under flexibility,and difficulties in ensuring cleanliness under flexibility. In response to four key challenges,a preliminary framework for a comprehensive coal-fired power plant flexibility standard system has been established,taking into account goals,specialized categories,and functional sequences. This framework covers processes including general use, design, manufacturing, installation, testing, measurement, operation, and evaluation. Based on the current state of flexibility development in coal - fired power generation and relatedstandards,it is proposed to focus on several key areas for standard development: terminology and evaluation of flexibility standards,safe operation and life assessment of flexible units,efficiency evaluation under flexible operation of coal-fired units,carbon dioxide detection and pollutant emission control,and online monitoring of coal-fired power generation units. The efficiency evaluation methods will particularly addressnon-steady-state and deep load-following abnormal conditions,with special emphasis on online monitoring technologies for fuel qualityand coal flow,as well as the establishment of flexible control standards for fuel-burning-working fluid interactions. The proposed frameworkand suggestions can be served as revision and establishment references for the standards related to flexibility of coal-fired power generation.