基于子网和储能的交直流混合微电网功率协调控制  

Power Coordinated Control of AC-DC Hybrid Microgrid Based on Subgrid and Energy Storage

作　　者：丁朝辉 邱增广 周嫣蕾 朱燕妮 张涵璐 夏文彬 DING Chaohui;QIU Zengguang;ZHOU Yanlei;ZHU Yanni;ZHANG Hanlu;XIA Wenbin(Zhenjiang Electric Power Design Institute Co.,Ltd.,Zhenjiang 212013,Jiangsu Province,China;School of Electrical and Information Engineering,Jiangsu University,Zhenjiang 212013,Jiangsu Province,China)

机构地区：[1]镇江电力设计院有限公司,江苏省镇江市212013 [2]江苏大学电气信息工程学院,江苏省镇江市212013

出　　处：《分布式能源》2025年第1期81-90,共10页Distributed Energy

基　　金：国网江苏省电力有限公司省管产业2024年科技项目(JC2024077)。

摘　　要：为解决交直流混合微电网单一储能形式无法满足各子网功率协调问题,提出一种考虑互联接口变换器(interlinking interface converter,IIC)及混合储能荷电状态(state of charge,SOC)变化的多模式功率协调控制策略。根据子网归一化电压频率指标划分微电网的运行域,结合各子网功率状态及混合储能SOC,在不同工况下由IIC与储能双向接口变换器(bidirectional interface converter,BIC)配合进行功率传输,实现系统整体功率平衡并控制储能SOC在合理的范围内,提高了系统运行稳定性和可靠性。同时,超级电容及蓄电池形成的混合储能,不仅能充分发挥超级电容响应迅速的优势,还能减小过冲过放对蓄电池的影响。最后,在PSCAD环境下设计不同工作模式的网间功率互济场景,验证多模式功率协调控制策略的有效性。In order to solve the problem that a single energy storage form of AC/DC hybrid microgrid cannot meet the power coordination of all subgrids,a multi-mode power coordination control strategy considering the changes of interlinking interface converter(IIC)and hybrid energy storage state of charge(SOC)is proposed.According to the subgrid normalized voltage and frequency indexes,the microgrid operation domain is divided,combined with the power state of each subgrid and the hybrid energy storage SOC,the IIC and the energy storage bidirectional interface converter(BIC)cooperate in power transmission under different operating conditions,to realize the overall power balance of the system as well as to control the storage SOC within a reasonable range,which improves the stability and reliability of the system.At the same time,the hybrid energy storage formed by supercapacitor and battery can not only give full play to the advantage of rapid response of supercapacitor,but also reduce the impact of overshoot and overdischarge on the battery.Finally,the inter-network power mutual aid scenarios with different operating modes are designed in the PSCAD environment to verify the effectiveness of the multi-mode power coordination control strategy.

关 键 词：交直流混合微电网 功率协调控制 独立运行 功率互济 接口变换器 

分 类 号：TK02[动力工程及工程热物理] TM76[电气工程—电力系统及自动化]