摘要
含燃气蒸汽联合循环机组(combined-cycle gas turbine,CCGT)的电–气耦合系统,是综合能源系统一种主要的配置形式。CCGT运行灵活,可以追踪负荷和新能源出力的波动,为综合能源系统提供备用,因此非常有必要对CCGT的备用配置开展研究。建立考虑CCGT运行模式的综合能源系统备用配置模型,实现备用市场条件下备用的精确有效配置,解决传统模型无法考虑CCGT运行模式导致备用配置过于乐观的问题。提出基于天然气最小切负荷的综合能源系统备用校核模型,通过校核保证CCGT备用在实际运行需要变为出力时,天然气系统留有足够裕度满足容量备用的出力要求。算例结果表明,提出的模型考虑CCGT的运行模式,克服了传统线性模型高估CCGT的爬坡能力导致系统实际备用不足的问题,保证系统的运行安全;含CCGT的综合能源系统备用校核确保实际运行时CCGT容量备用的充足供气,保证CCGT备用的可用性。
An electricity-gas coupling system with combined-cycle gas turbines(CCGTs)is a major form of integrated energy system.Due to their flexible operation characteristic,CCGTs are often used to track fluctuations in load and renewable energy sources,providing reserve for the integrated energy system,so it is necessary to conduct research on the reserve allocation of CCGTs.A reserve allocation model of the integrated energy system considering the operation mode of CCGTs was established.The proposed model solved the problem that the traditional model cannot consider the operation mode of CCGTs so that the reserve allocation result is too optimistic,and realized accurate and effective allocation of reserve under reserve market conditions.Initially,this paper established a feasibility check model of CCGTs’reserve based on the minimum load-shedding model for gas,to make sure that when in actual operation,natural gas system has sufficient adequacy to meet requirements of reserve.Numerical results show that the proposed model considers the operation mode of CCGTs,overcomes the problem that the traditional linear model overestimates the ramp ability of CCGTs,which may lead to the actual reserve shortage,and thus ensures the operation safety of the system.The CCGTs’feasibility check ensures the sufficient gas supply of CCGTs’reserve in actual operation,guaranteeing the feasibility of CCGTs’reserve.
作者
王春晓
严超
别朝红
李更丰
WANG Chunxiao;YAN Chao;BIE Zhaohong;LI Gengfeng(State Key Laboratory of Electrical Insulation and Power Equipment(Xi’an Jiaotong University),Xi’an 710049,Shaanxi Province,China)
出处
《中国电机工程学报》
EI
CSCD
北大核心
2020年第2期522-534,共13页
Proceedings of the CSEE
基金
国家自然科学基金项目(51637008,51607136)
国家重点研发计划项目(2016YFB0901900).
关键词
燃气蒸汽联合循环机组
综合能源系统
备用优化配置
备用校核
combined-cycle gas turbine(CCGT)
integrated energy system
reserve allocation
reserve feasibility check
