规模化蓄热式电锅炉负荷弃风消纳策略

Research on Wind Curtailment Consumption Strategy of Large-Scale Regenerative Electric Boiler Load

新型电力系统中风电大规模接入导致电网调节能力不足,弃风问题突出,开发负荷侧资源势在必行。作为温控负荷,蓄热式电锅炉的调节能力受建筑物需热量约束。为提升规模化蓄热式电锅炉负荷弃风消纳能力,提出了基于电锅炉蓄热量约束的运行控制策略及组合优化方法。首先,构建了基于热平衡原理的蓄热式电锅炉负荷模型,并分析了单台蓄热式电锅炉负荷的可调节特性;然后,研究了蓄热式电锅炉参与弃风消纳的作用机理和组合控制方法;最后,提出了规模化蓄热式电锅炉负荷弃风消纳模型及控制策略。算例分析表明,相比于受建筑物需热量约束的控制策略,所提控制策略不但可以使规模化蓄热式电锅炉负荷更大化消纳弃风电量,并且其长期运行经济效益更好。

The large-scale access of wind power in the new power system leads to the lack of power grid regulation capacity and the problem of wind curtailment.It is imperative to develop load-side resources.As a temperature control load,the regulating capacity of the regenerative electric boiler is constrained by the heat demand of the building.In order to improve the load capacity of large-scale regenerative electric boilers,this paper proposes an operation control strategy and a combination optimization method based on the heat storage constraint of electric boilers.Firstly,the load model of regenerative electric boiler based on heat balance principle is constructed,and the adjustable characteristics of single regenerative electric boiler load are analyzed.Then,the mechanism and combined control method of regenerative electric boiler participating in wind curtailment are studied.Finally,a large-scale regenerative electric boiler load wind power consumption model and control strategy are proposed.The example analysis shows that compared with the control strategy constrained by the heat demand of the building,the control strategy proposed in this paper can not only make the load of the large-scale regenerative electric boiler consume more abandoned wind power,but also have better long-term economic benefits.