摘要
光热电站可以平稳发电,但仍属于限能电站,不能全容量参加电力平衡,季节性电力支撑能力受限。该文基于光热电站日等效保证小时数和系统高峰时段需求提出了一种评估光热发电替代火电装机能力的方法,进而给出一种通过增加应急锅炉备用发电以完全替代火电装机应对极端天气和季节性缺电的解决方法。青海电力系统的算例表明,光热电站通过增加应急备用锅炉可应对极端天气和季节性电力电量供应的不平衡,做到全容量全时段替代火电装机,同时保证发电量中绝大部分仍是可再生能源。论文的研究成果,可助力光热电站实现以少量低碳能源带动大规模可再生能源开发,在新型电力系统中具有重要示范意义。
Solar thermal power stations generate electricity smoothly. As energy-limited power stations, they are weak in participating in power balance at full capacity, and limited in supporting/sustaining their power capacity seasonally. Based on the daily equivalent guaranteed hours of the solar thermal power station and the demand of the system during the peak hours, this paper proposes a method for evaluating the ability of the solar thermal power to replace the thermal power installed capacity, and then suggests a method to completely substitute the thermal power installed capacity by adding the emergency boiler backup power generation to cope with the extreme weather and gives the solutions to the seasonal power outages. The calculation example of the power system in Qinghai province shows that the solar thermal power station can cope with the extreme weather and the imbalance of the seasonal power supply by adding some emergency backup boilers. Therefore, the thermal power installed capacity is replaced with full capacity and at all times, at the same time, most of the power generation is ensured to be the Renewable Energy. The research results in this paper may help the solar thermal power stations realize large-scale renewable energy development with a small amount of low-carbon energy, which has important demonstration significance in new power systems.
作者
孙骁强
汪莹
李庆海
李富春
杨攀峰
杨楠
张小奇
霍超
傅旭
李海伟
SUN Xiaoqiang;WANG Ying;LI Qinghai;LI Fuchun;YANG Panfeng;YANG Nan;ZHANG Xiaoqi;HUO Chao;FU Xu;LI Haiwei(Northwest Branch of State Grid Corporation of China,Xi’an 710048,Shaanxi Province,China;Northwest Electric Power Design Institute Co.,Ltd.of China Power Engineering Consulting Group,Xi’an 710075,Shaanxi Province,China)
出处
《电网技术》
EI
CSCD
北大核心
2022年第8期2948-2954,共7页
Power System Technology
关键词
电力保障
日等效保证小时数
备用发电
power guarantee
daily equivalent guaranteed hours
supplementary combustion
