摘要
针对配电网因“双碳”目标下分布式电源与柔性负荷规模化接入导致的系统过/欠电压问题,提出了一种基于电动汽车(EVs)聚合主动支撑的有源配电网协同调压策略,并充分利用了柔性负荷聚合的调节作用,以支撑配电网安全高效运行。首先,提出了基于“出行链”概念的EVs聚合预测模型,以提高EVs聚合预测的精确性。其次,针对多个节点存在的电压问题,依据电压-功率灵敏度,提出了一种基于“EVs聚合-光伏多功能逆变器-无功治理设备”的协同调压策略,以促使节点电压的有效调节,减少无功治理设备的配置成本并保证系统安全供电。最后,通过不同方法的对比与多场景的测试,验证了所提EVs聚合预测方法与协同调压策略的有效性。
To address the issue of over/under voltage in the distribution network due to the scale access of distributed generators and flexible loads under the"double carbon"target,an active distribution networks cooperative voltage control strategy based on the active support of electric vehicles(EVs)aggregation was proposed,and the regulation effect of flexible load aggregation was fully utilized to support the safe and efficient operation of distribution networks.First,an EVs aggregation prediction model based on the concept of"travel chain"was proposed to improve the accuracy of EVs aggregation prediction.Then,aiming at the voltage problem of multiple nodes,according to the voltage-power sensitivity,a coordinated voltage regulation strategy based on"EVs aggregation,photovoltaic multifunctional inverter and reactive power management equipment"was proposed to promote the effective regulation of node voltage,reduce the configuration cost of reactive power control equipment,and ensure the safe power supply of the system.Finally,through the comparison of different methods and multi-scenario tests,the validity of the proposed EVs aggregation prediction method and the coordinated voltage regulation strategy was verified.
作者
郁家麟
呙金瑞
屠晓栋
刘维亮
钟伟东
YU Jialin;GUO Jinrui;TU Xiaodong;LIU Weiliang;ZHONG Weidong(Jiaxing Power Supply Company,State Grid Zhejiang Electric Power Co.,Ltd.,Jiaxing 314033,Zhejiang,China;College of Automation&College of Artificial Intelligence,Nanjing University of Posts and Telecommunications,Nanjing 210023,Jiangsu,China)
出处
《电气传动》
2024年第9期40-49,共10页
Electric Drive
基金
国家电网有限公司科技项目(5400-202219152A-1-1-ZN)。
关键词
有源配电网
电动汽车聚合
出行链
电压-功率灵敏度
协同调压
active distribution networks
electric vehicles(EVs)aggregation
travel chain
voltage-power sensitivity
cooperative voltage control
