港口岸电系统冲击性负荷功率柔性控制方法  

Flexible Control Method for Impact Load Power in Port Shore Power System

作　　者：李尚龙 刘乾易 邹润民[1] 刘芳[1] 李勇[2] LI Shanglong;LIU Qianyi;ZOU Runmin;LIU Fang;LI Yong(School of Automation,Central South University,Changsha 410083,Hunan Province,China;College of Electrical and Information Engineering,Hunan University,Changsha 410082,Hunan Province,China)

机构地区：[1]中南大学自动化学院,湖南省长沙市410083 [2]湖南大学电气与信息工程学院,湖南省长沙市410082

出　　处：《中国电机工程学报》2024年第16期6587-6596,I0025,共11页PROCEEDINGS OF THE CHINESE SOCIETY FOR ELECTRICAL ENGINEERING

基　　金：国家自然科学基金项目(52207146);湖南省重点研发计划(2023GK2007)。

摘　　要：为解决港口岸电系统中负荷功率存在较强冲击性问题,提出一种基于储能电池的负荷功率柔性控制方法,在实现功率实时平抑和无功动态补偿的基础上,降低系统网侧线损、提升储能电池循环寿命及应对极端工况的能力。首先,介绍负荷功率柔性控制系统(load power flexible control system,LPFCS)的拓扑结构及控制方式;其次,依据负荷功率和电池荷电状态来划分负荷工况,进而以负荷功率波动的平抑、防止电池过充过放以及提升储能系统应对极端工况的能力为原则,将LPFCS的工作模式分为空闲、填谷、削峰以及限幅4种模式;然后,建立系统网侧线损优化模型,求解模型得出功率补偿值的取值区间,并基于该区间确定不同工况下LPFCS的功率补偿值。最后,基于长江某岸电系统实测负荷数据,对LPFCS的工作性能进行仿真和实验验证。结果表明:LPFCS的补偿响应时间小于0.3 s,负荷功率波动抑制率达到90%,系统网侧线损率下降17.2%。To solve the problem of strong fluctuation of load power in port shore power system,a load power flexible control method based on energy storage battery is proposed,on the basis of realizing real-time power suppression and dynamic reactive power compensation,which reduces system network loss,improves the cycle life of energy storage battery and enhance the ability to cope with extreme working condition.The topology and control method of load power flexible control system are introduced first.The working conditions of load are then divided according to the load power and state of charge of battery.According to the requirements of suppressing load power fluctuation,preventing battery overcharge and overdischarge and improving the ability to cope with extreme working condition,the working modes of load power flexible control system are divided into idle,valley fill,peak cut and limiting modes.Moreover,the system network loss optimization model is established,the reference interval of the power compensation reference is obtained through solving the model,and the power compensation reference of load power flexible control system under different working conditions is determined based on the reference interval.Finally,based on the measured load data of a shore power system on the Yangtze River,the working performance of load power flexible control system is verified by the simulation and experiment.The results show that the compensation response time of load power flexible control system is less than 0.3 s,the suppression rate of load power fluctuation reaches 90%,and the system network loss rate decreased by 17.2%.

关 键 词：港口岸电系统 负荷功率柔性控制 网侧线损 模式划分 

分 类 号：TM46[电气工程—电器] U653[交通运输工程—港口、海岸及近海工程]