一种适用交直流混合微电网的组网方法及控制策略研究  

Research on a Networking Method and Control Strategy Suitable for AC/DC Hybrid Microgrid

作　　者：张云龙 康慨 唐畅 郑开琦 施念 曹传胜 ZHANG Yun-long;KANG Kai;TANG Chang;ZHENG Kai-qi;SHI Nian;CAO Chuan-sheng(Power China Hubei Electric Engineering Co.,Ltd,Wuhan 430040,China)

机构地区：[1]湖北省电力规划设计研究院有限公司,湖北武汉430040

出　　处：《电工电气》2024年第7期27-31,共5页Electrotechnics Electric

基　　金：中国电力建设股份有限公司科技项目(DJ-ZDXM-2023-14)。

摘　　要：交直流混合微电网网架结构是能量管理、控制、保护和稳定的基础。根据交直流混合微电网的特点,提出了一种基于能量守恒原则及分区、分层匹配原则的组网设计流程,并给出了改进交直流混合微电网主从协调控制策略,采用一种新型主控制器,当储能逆变器由PQ控制切换至V/f控制时,能够克服暂态时刻将产生较大的电压、频率和功率波动,保证微电网安全稳定运行。基于某实际风光储柴微电网项目,设计拓扑结构并搭建PSCAD仿真模型,验证了所提组网设计和主从控制策略的有效性,为未来大规模交直流混合微电网的规划设计及运行提供参考。The structure of the AC/DC hybrid microgrid is the basis of energy management,control,protection and stability.According to the characteristics of the AC/DC hybrid microgrid,a networking design process based on the principle of energy conservation and the principle of zoning and hierarchical matching is proposed.On this basis,the improved master-slave coordination control strategy of AC/DC hybrid microgrid is proposed,and a new type of master controller is adopted.When the energy storage inverter is switched from PQ control to V/f control,it can overcome the transient moment and produce large voltage,frequency and power fluctuations,so as to ensure the safe and stable operation of the microgrid.Based on an actual PV-wind-storage-diesel microgrid project,the topology structure was designed and the PSCAD simulation model was set up,which verified the effectiveness of the proposed networking design and master-slave control strategy,and provided a reference for the planning,design and operation of large-scale AC/DC hybrid microgrid in the future.

关 键 词：混合微电网 组网方法 新型主控制器 稳定运行 

分 类 号：TM71[电气工程—电力系统及自动化]