摘要
针对新型电力系统建设中新能源占比不断提升导致的电网调频需求难以满足问题,为了充分利用新型电力系统中各类调频资源,电动汽车与电解铝作为典型的柔性负荷具有巨大的调频潜力。为此,提出一种集群电动汽车与电解铝参与电网调频的协同控制策略。首先,考虑电动汽车的有功-频率特性曲线建立电动汽车参与电网的调频模型;其次,基于饱和电抗器的调节方法,采用模型预测控制对电解铝负荷进行控制,建立电解铝的电压-有功频率响应模型;最后,根据频差变化提出一种集群电动汽车与电解铝的电网调频协同控制策略。仿真结果表明,所提控制策略参与不同扰动场景的频率控制时,满足短期功率调节、中长周期能量平衡及突发灾害下的灵活性应急等需求,有效地缩短调频时间、降低最大频差。
In view of the difficulty in meeting the demand for frequency regulation of the grid,caused by the increasing proportion of new energy in the construction of new power systems,in order to make full use of all kinds of FM resources in the new power system,electric vehicles and electrolytic aluminium,as typical flexible loads,have enormous frequency modulation potential.Therefore,a collaborative control strategy was proposed for power grid frequency regulation involving cluster electric vehicles and electrolytic aluminum.Firstly,considering the active frequency characteristic curve of electric vehicles,a frequency modulation model was established for electric vehicles participating in the power grid;Secondly,based on the control method of saturated reactor,model predictive control was used to control the load of electrolytic aluminium and establish the voltage active frequency response model of electrolytic aluminium;Finally,a grid frequency modulation collaborative control strategy for cluster electric vehicles and electrolytic aluminum was proposed based on frequency difference changes.Simulation results show that when the proposed control strategy is applied to frequency control of various disturbance scenarios,it meets the requirements of short-term power regulation,medium-and long-term energy balance,and flexible emergency response to sudden disasters,and effectively shortens the frequency regulation time and reduces the maximum frequency difference.
作者
骆钊
聂灵峰
张志远
赵伟杰
田肖
沈鑫
LUO Zhao;NIE Lingfeng;ZHANG Zhiyuan;ZHAO Weijie;TIAN Xiao;SHEN Xin(Faculty of Electric Power Engineering,Kunming University of Science and Technology,Kunming 650500,China;Kunming Bureau,EHV Power Transmission Company of China Southern Power Grid Co.,Ltd.,Kunming 650000,China;Measurement Center of Yunnan Power Grid Co.,Ltd.,Kunming 650051,China)
出处
《电机与控制学报》
北大核心
2025年第1期121-131,共11页
Electric Machines and Control
基金
国家自然科学基金(52277104)
云南省国家重点研发计划(202401CF070076,202303AC100003)
云南省应用基础研究计划(202301AT070455,202201AT070220)
云南省"兴滇英才支持计划"(KKRD202204024)。
关键词
新型电力系统
集群电动汽车
频率偏差
频率控制
模型预测控制
电解铝负荷
new power system
aggregated electric vehicles
frequency deviation
frequency control
model predictive control
electrolytic aluminum load
