分布式交直流混联系统及自适应动态下垂技术研究  

Research on distributed AC DC hybrid system and adaptive dynamic sag technology

作　　者：王林 董雪 张俊伟 成月良 张泽成 张波 WANG Lin;DONG Xue;ZHANG Junwei;CHENG Yueliang;ZHANG Zecheng;ZHANG Bo(China Guohua(Rushan)New Energy Co.,Ltd.,Shandong Weihai 264500,China;Shandong Guohua Times Investment Development Co.,Ltd.,Shandong Jinan 250002,China;NARI Technology Nanjing Control System Co.,Ltd.,Jiangsu Nanjing 211100,China)

机构地区：[1]国华(乳山)新能源有限公司,山东威海264500 [2]山东国华时代投资发展有限公司,山东济南250002 [3]国电南瑞南京控制系统有限公司,江苏南京211100

出　　处：《工业仪表与自动化装置》2024年第2期136-142,共7页Industrial Instrumentation & Automation

摘　　要：分布式交直流混联系统采用配电多区柔性组网技术及消纳提升策略,为分布式新能并网接入与潮流优化调度提供了高效可行手段。针对源荷功率消纳需求,首先提出分布式交直流系统架构及其能量管控运行模式,然后通过分析分布式交直流系统的等效数学模型及工频与高频环流的产生机理,提出考虑功率均衡控制和高频环流抑制的自适应动态下垂控制技术。最后,在PSCAD/EMTDC中搭建了分布式交直流系统的仿真模型并进行算例验证,仿真结果表明所提技术可在保持系统稳定性基础上实现源荷消纳提升和潮流优化调控。Distributed AC/DC hybrid system adopts multi-zone flexible networking technology and consumption improvement strategy,providing efficient and feasible means for distributed new energy grid-connected and power flow optimization.For satisficing the demand for source&load′s power consumption,firstly a distributed AC/DC system architecture and its energy operation mode were proposed.Then,by analyzing the equivalent mathematical model of the distributed AC/DC system and the generation mechanism of power-frequency and high-frequency circulating currents,an adaptive dynamic droop control strategy considering power balance control and high-frequency circulating current suppression was proposed.Finally,a simulation model of distributed AC/DC system was built in PSCAD/EMTDC and verified through numerical examples.Simulation results showed that the proposed technology can achieve improved source load absorption and optimized power flow regulation while maintaining system stability.

关 键 词：分布式交直流 柔性组网 自适应动态下垂 高频环流 

分 类 号：TM863[电气工程—高电压与绝缘技术]