PDF《火电机组灵活性运行技术综述与展望》

第47 卷第5期热力发电Vol.

47 No.5

2018 年5月THERMAL POWER GENERATION May

2018 收稿日期:2018-02-06 基金项目:中国华能集团有限公司总部科技项目(HNKJ17-H13) Supported by:Science and Technology Project of China Huaneng Group (HNKJ17-H13) 第一作者简介:牟春华(1966―),男,高级工程师,西安热工研究院有限公司副总经理(副院长),主要研究方向为火电厂节能减排与运行管理, [email protected]. 火电机组灵活性运行技术综述与展望 牟春华,居文平,黄嘉驷,张建元 (西安热工研究院有限公司,陕西 西安 710054) [摘要]为有效解决大气污染问题,国家大力推进能源结构清洁化改革,风力发电、太阳能发电装 机容量迅速增长,加之传统煤电产能过剩,导致电网调峰困难,这对现役火电机组的灵活 性以及深度调峰能力提出了更高要求.本文以我国新能源发展趋势以及弃风、弃光程度为 切入点,综述了提升火电机组灵活性运行的现状,针对火电机组现存调峰能力不足、负荷 响应速度迟缓、长期偏离设计工况运行等问题进行了分析,并介绍了应对技术以及应用情 况,在此基础上对火电机组灵活性运行下一步的工作方向进行了预测. [关键词]火电机组;

调峰;

灵活性;

热电解耦;

低压缸零出力;

负荷响应速度;

全厂灵活性决策 [中图分类号]TK123 [文献标识码]A [DOI 编号]10.19666/j.rlfd.201802048 [引用本文格式]牟春华, 居文平, 黄嘉驷, 等. 火电机组灵活性运行技术综述与展望[J]. 热力发电, 2018, 47(5): 1-7. MU Chunhua, JU Wenping, HUANG Jiasi, et al. Review and prospect of technologies of enhancing the flexibility of thermal power units[J]. Thermal Power Generation, 2018, 47(5): 1-7. Review and prospect of technologies of enhancing the flexibility of thermal power units MU Chunhua, JU Wenping, HUANG Jiasi, ZHANG Jianyuan (Xi'

an Thermal Power Research Institute Co., Ltd., Xi'

an 710054, China) Abstract: In order to solve the problem of air pollution effectively, the government vigorously promotes the clean reformation of existing energy structure, resulting in the rapid growth of installed capacities of wind generation and solar power generation. In addition, the traditional coal-based power plants are already in a state of overcapacity, which leads to difficulties in the peak load regulation of the power grid. These problems have put forward higher requirements for the flexibility and deep peak load regulation capacity of coal-based power units. In this study, the necessity of enhancing the flexibility of thermal power units is discussed from the viewpoints of the development trend of renewable energy in China and the phenomenon of wind and solar energy abandonment. Besides, the existing problems of insufficient peak load regulation, slow load response speed, and long-term deviation from design conditions in thermal power units are analyzed, and then the solution technologies and application situations are introduced. Based on this, the future research directions of enhancing the flexibility of thermal power units are predicted. Key words: thermal power unit, peak load regulation, flexibility, thermal-power decoupling, low pressure cylinder with zero output, load response speed, overall strategic decision of flexibility 为了大力推进能源结构清洁化改革,风力发电 (风电) 、 太阳能发电装机容量迅速增长. 但新能源 具有随机性、间歇性、不稳定性等特点,其比重增 加到一定程度后,必然导致电网调峰困难,加之传 统煤电产能过剩,这就要求现役火电机组提高灵活 性以及深度调峰能力,以维持电网稳定[1-9] .