新型电力系统规划下燃煤电厂锅炉机组的发展  

Development of Coal-fired Power Plant Boiler Units Under New Power System Planning

作　　者：李德波 刘鹏宇 刘彦丰[2] 王朋 陈智豪 陈兆立 廖宏楷 冯永新 成明涛 LI Debo;LIU Pengyu;LIU Yanfeng;WANG Peng;CHEN Zhihao;CHEN Zhaoli;LIAO Hongkai;FENG Yongxin;CHENG Mingtao(China Southern Grid Power Technology Co.,Ltd.,Guangzhou,Guangdong 510080,China;Department of Power Engineering,School of Energy Power and Mechanical Engineering,North China Electric Power University,Baoding,Hebei 071003,China;CSG Digital Grid Research Institute Co.,Ltd.,Guangzhou,Guangdong 510623,China)

机构地区：[1]南方电网电力科技股份有限公司,广东广州510080 [2]华北电力大学能源动力与机械工程学院动力工程系,河北保定071003 [3]南方电网数字电网研究院有限公司,广东广州510623

出　　处：《广东电力》2022年第7期3-13,共11页Guangdong Electric Power

基　　金：国家自然科学基金项目(51376161);中国南方电网有限责任公司重点项目(NYJS2020KJ005)。

摘　　要：我国新型电力系统规划下,新型清洁发电机组装机容量不断增加,其随机性、间歇性和不稳定性的发电特点使得燃煤发电需要承担电网的调峰重任。在未来相当长的一段时间里,燃煤发电仍将是我国的主要发电方式,为进一步减少煤炭消耗且实现城市污泥的快速减容,燃煤电厂污泥掺烧得到了快速发展和重点关注。基于以上两点,对新型电力系统规划下燃煤电厂深度调峰与污泥掺烧的发展进行综述,研究发现:深度调峰是新型电力系统规划下燃煤电厂的重要发展方向,我国已投产燃煤锅炉机组的原设计均未考虑长期处于深度调峰工况下运行,因此燃煤锅炉深度调峰改造困难较大,应通过数值模拟与工程试验相结合的方法对锅炉机组开展灵活性改造;燃煤电厂污泥掺烧可以实现污泥减容及提升发电经济性,也是新型电力系统规划下燃煤电厂的重要发展方向,燃煤锅炉掺烧质量分数不大于10%的污泥不会干扰锅炉机组的正常运行,且对锅炉机组整体NO排放具有抑制作用。Under the planning of China’s new power system, the installed capacity of the new clean generator unit is increasing. The power generation characteristics such as randomness, intermittent and unstability make coal-fired thermal power generation need to undertake the heavy task of peak regulation of the power grid. For a long time in the future, coal-fired power generation will still be the main power generation mode in China. In order to further reduce coal consumption and realize rapid volume reduction of increasing urban sludge, blending combustion of sludge in the coal-fired power plants has been developed rapidly and paid more attention. Based on the above two points, this paper summarizes the development of deep peak shaving of coal-fired power plants and sludge blending combustion under the new power system planning. The research shows that deep peak shaving of the boiler unit is an important way for the development of coal-fired power plant under the planning of new power system.The original design of boiler units in coal-fired power plants in China does not consider long-term operation under the deep peak shaving condition, so it is difficult to transform coal-fired boilers to adapt to deep peak shaving. It is suggested to develop flexible transformation of boiler units by means of the combination of numerical simulation and engineering test. The blending combustion of sludge of the coal-fired power plant can reduce sludge capacities and improve the economy of power generation, which is also an important development direction of the coal-fired power plant under the planning of new power system. It will not disturb the normal operation of the boiler unit by mixed burning of sludge with the mass concentration of 10% and the less, and it can suppress overall NOemission of the unit.

关 键 词：新型电力系统 深度调峰 灵活性改造 污泥掺烧 燃煤电厂 锅炉机组 

分 类 号：TM621[电气工程—电力系统及自动化] TK22[动力工程及工程热物理—动力机械及工程]