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浙江大学电气工程学院,浙江省杭州市 310027
Received:08 October 2021,
Revised:2022-02-10,
Published Online:11 April 2022,
Published:25 August 2022
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张笑演,熊厚博,王楚通等.基于最优出力区间和碳交易的园区综合能源系统灵活经济调度[J].电力系统自动化,2022,46(16):72-83.
ZHANG Xiaoyan,XIONG Houbo,WANG Chutong,et al.Flexible Economic Dispatching of Park-level Integrated Energy System Based on Optimal Power Output Interval and Carbon Trading[J].Automation of Electric Power Systems,2022,46(16):72-83.
张笑演,熊厚博,王楚通等.基于最优出力区间和碳交易的园区综合能源系统灵活经济调度[J].电力系统自动化,2022,46(16):72-83. DOI: 10.7500/AEPS20211008006.
ZHANG Xiaoyan,XIONG Houbo,WANG Chutong,et al.Flexible Economic Dispatching of Park-level Integrated Energy System Based on Optimal Power Output Interval and Carbon Trading[J].Automation of Electric Power Systems,2022,46(16):72-83. DOI: 10.7500/AEPS20211008006.
传统的日前鲁棒优化算法只能提供设备各个时段的具体出力值,由于新能源出力的随机性、设备爬坡约束、储能荷电状态约束等时间耦合约束的影响,难以给日内调度计划提供调整方案。文中在考虑综合能源园区的经济调度问题时,在传统的min-max-min三层优化问题中加入设备最优出力区间变量,将时间耦合约束解耦,并引入负荷累计改变量的概念将需求响应约束解耦。储能引入了充放电标志变量,采用嵌套列与约束生成算法求解3层优化问题,并对实际碳排放表达式进行松弛和分段线性化,获得设备最优出力区间和需求响应上下界,从而在日内调度时可根据新能源出力在区间内任意调整。算例分析表明,基于最优出力区间的方法在日内调度时应对不确定性的能力更强,同时由于储能荷电状态约束的解耦,可以根据调频市场容量售价来决策储能调频容量以获取收益,进一步降低总成本。最后,分析了碳交易价格对于园区碳交易成本和CO
2
减排量的影响,以此简单说明碳交易市场的运营机理。
Traditional day-ahead robust optimization algorithm can only provide the specific output value of equipment at each moment. Due to the influence of time coupling constraints such as randomness of the renewable energy output
the climbing constraints of equipment and state of charge constraints
it is difficult to provide an adjustment scheme for the intraday dispatching plan. In this paper
when considering the economic dispatching problem of the park-level integrated energy system (PIES)
the interval variable of optimal power output is added into the traditional min-max-min three-layer optimization problem. The time coupling constraints are decoupled. Besides
the demand response constraint is decoupled by introducing the concept of accumulated load change. Due to the introduction of charging and discharging flag variables in energy storage
the nested column and constraint generation algorithm is used to deal with the three-layer optimization problem
and the actual carbon emission expression is relaxed and piecewise linearized. The optimal power output interval
upper and lower bounds of the demand response can be obtained
so that
during intraday dispatching
it can be adjusted arbitrarily within the interval according to the renewable energy output. Case study shows that
the method based on the optimal power output interval has a stronger ability to deal with uncertainty during intraday dispatching. At the same time
due to the decoupling of the state of charge constraints for the energy storage
the frequency regulation capacity of the energy storage can be determined according to the price of the frequency regulation market capacity to obtain benefits
and further reduce total cost. Finally
the influence of carbon trading price on the carbon trading cost and carbon dioxide emission reduction in the park is analyzed
so as to briefly explain the operation mechanism of the carbon trading market.
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