计及多类型可调度柔性负荷响应的电力系统经济调度策略

Economic dispatching strategy of power system considering multi-type schedulable flexible load response

引导负荷侧柔性资源参与电力系统调度具有良好的经济效益和环境效益。电力系统中包含的负荷种类繁多,而当前的研究往往只关注单一类型负荷的调控却忽略了多类型负荷间的协调配合。为了解决这一问题,本文提出一种计及多类型可调度柔性负荷参与的电力系统经济调度策略。首先,本文建立了电压敏感型商业负荷的数学模型,采用电压-功率关系刻画商业负荷用电行为,引入灵敏度分析方法评估商业负荷功率可调范围;然后将商业负荷功率调节裕度作为一种灵活备用资源,纳入到工业负荷调度体系中,实现工商业负荷的协同调度;最后,通过改进的IEEE-30节点测试系统说明了多类型可调度负荷参与调度能充分发掘工商业负荷的调度潜力,有效提高区域的新能源消纳水平。

Guiding load side flexible resources to participate in power system dispatching has good economic and environmental benefits.There are many kinds of loads in the power system,but the current research often only focuses on the regulation of a single type of load,but ignores the coordination of multiple types of loads.In order to solve this problem,an economic dispatching strategy of power system considering the participation of multiple types of schedulable flexible loads is proposed in this paper.Firstly,this paper establishes the mathematical model of voltage sensitive commercial load,describes the power consumption behavior of commercial load by using the voltage power relationship,and introduces the sensitivity analysis method to evaluate the adjustable range of commercial load power.Then the commercial load power regulation margin is incorporated into the industrial load scheduling system as a flexible standby resource to realize the collaborative scheduling of industrial and commercial loads.Finally,the modified IEEE-30 node test system shows that the participation of multiple types of schedulable loads in scheduling can fully explore the scheduling potential of industrial and commercial loads and effectively improve the regional new energy consumption level.