冷热电联供系统多时间尺度滚动优化运行方法研究  

Research on Multi-time Scale Rolling Optimal Operation Method of Combined Cooling,Heating and Power System

作　　者：王智[1] 陶鸿俊 张玲 WANG Zhi;TAO Hongjun;ZHANG Ling(School of Energy,Power and Mechanical Engineering,North China Electric Power University,Baoding 071003,Hebei Province,China)

机构地区：[1]华北电力大学能源动力与机械工程学院,河北保定071003

出　　处：《动力工程学报》2022年第3期276-285,共10页Journal of Chinese Society of Power Engineering

基　　金：国家重点研发计划资助项目(2019YFE0193100)。

摘　　要：为解决源-荷供需能量不匹配的问题,提出了针对冷热电联供(CCHP)系统的多时间尺度滚动优化运行方法。该策略按照“日前-日内”2个阶段逐级制定机组出力计划,分别构建了以日前运行成本最低为目标的日前优化模型以及以滚动时域内购电成本和储能出力变化惩罚成本最低为目标的日内滚动优化模型,由此得到冷热电联供系统平滑出力计划。在日前优化中考虑多种储能模式对CCHP系统运行经济性的影响;日内滚动优化阶段确定了最佳滚动时长为4 h。结果表明:多元储能模式能够提高CCHP系统的运行经济性;多时间尺度滚动优化不仅可以提高和保证CCHP系统运行的经济性,而且能够有效降低源-荷的波动性对实际系统运行的影响。In order to solve the problem of energy mismatch between source and load,a multi-time scale rolling optimization operation method for CCHP systems was proposed.The unit output plans was formulated level by level according to the two stages of day ahead and intraday.A day-ahead optimization model was constructed with the lowest day-ahead operating cost as the goal,and a intraday rolling optimization model was made with the lowest power purchase cost and the penalty cost of energy storage output changes in the rolling time domain as the goal.Thus,a smooth output plan of CCHP system was obtained.The impact of multiple energy storage modes on the operating economy of the CCHP system was considered in the day-ahead optimization,and the optimum rolling period of 4 hours was determined in the intraday rolling optimization stage.Results show that the multi-energy storage modes can improve the operating economy of the CCHP system.Multi-time scale rolling optimization can not only enhance and ensure the operating economy of the CCHP system,but also effectively reduce the impact of source load fluctuations on the actual system operation.

关 键 词：冷热电联供系统 多时间尺度 滚动优化 多元储能 

分 类 号：TK019[动力工程及工程热物理]