摘要
近几年全国弃风、弃光问题日益严重,而且国家对燃煤电厂深度调峰能力的要求也不断提高。该文结合华北地区火电机组深度调峰补偿相关政策,对某350 MW超临界热电联产项目进行灵活性改造研究。通过对国内几种主流灵活性改造技术进行分析,对比各种技术的优缺点以及投资费用、运行成本,并结合本地区调峰补偿情况,评估机组灵活性改造后对后期经营的影响,得出适合本厂的最优方案。结果表明,低压缸零出力供热技术是目前为止应对热电解耦成本最低的方案。当标煤单价在700元/t以下时,机组不宜进行调峰,应多带负荷;当标煤单价在700元/t以上时,通过调峰降低机组负荷来减少亏损。
In recent years, the wind and PV power curtailment is becoming more and more serious, and the demand for deep peaking capacity of coal-fired power plants is also increasing. In this paper, the flexibility transformation of 350MW super-critical cogeneration units was studied combined with the relevant policies of thermal power unit＇s deep peak shaving compensation in North China. The optimal scheme suitable for our factory was obtained through analyzing several mainstream flexibility transformation technologies, comparing the advantages and disadvantages, investment costs and operating costs of various technologies, evaluating the effect of unit flexibility on later operation combined with the compensation for peak adjustment in the region. The results show that the low-pressure cylinder zero output heating technology is the lowest cost scheme coping thermoelectric decoupling. When the unit price of standard coal is below 700 yuan per ton, the unit is not suitable for peak adjustment and should be loaded with more load; and when the price of the standard coal is above 700 yuan per ton, it is possible to reduce unitload to reduce loss through peak regulation.
作者
李树明
刘青松
朱小东
平士斌
白贵生
LI Shuming;LIU Qingsong;ZHU Xiaodong;PING Shibin;BAI Guisheng(Jingneng Qinhuangdao Thermal Power Co.,Ltd,Qinhuangdao 066000,Hebei Province,China;Huadian Electric Power Research Institute Co.LTD.,Huhhot 010010,Inner Mongolia Autonomous Region,China)
出处
《发电技术》
2018年第5期449-454,共6页
Power Generation Technology
关键词
热电联产
灵活性改造
深度调峰
弃风
弃光
cogeneration unit
flexibility transformation
deep peak regulation
wind power curtailment
photovoltaic energy curtailment
