西安工程大学学报2024，Vol.38Issue(2)：34-40,7.DOI:10.13338/j.issn.1674-649x.2024.02.005
柔性互联装备中零序电压注入的相间功率均衡控制
Phase-to-phase power balance control in flexible interconnection equipment by injecting zero sequence voltage
摘要
Abstract
The multi terminal flexible interconnection equipment with cascaded full bridge and dual active bridge structure could connect AC power grid and multiple DC power grid,and instan-taneous power differences in different DC power grids and sub module faults could lead to unbal-ance grid current and DC capacitor voltage distribution.For the three-phase star interconnection structure,this paper adopted the control strategy of injecting zero sequence voltage to meet the different power requirements,derived the specific zero sequence voltage component expression,and quantitatively analyzed the limitation range of injected zero sequence voltage.Finally,a simu-lation experimental platform was built to verify the effectiveness of the method.The simulation results indicated that injecting zero sequence voltage on the basis of the normal control architec-ture can allocate the power between phases to ensure grid current balance,reduce imbalance from 6％ to 1％,and maintain the even distribution of DC capacitor voltage.关键词
中压配电网/多端柔性互联装备/电流均衡控制/直流电容电压平衡控制/零序电压Key words
medium voltage distribution network/multi-terminal flexible interconnection equip-ment/current balance control/DC capacitor voltage balance control/zero sequence voltage分类
信息技术与安全科学引用本文复制引用
王波,季子越,汪万兴,肖朝民,张岩..柔性互联装备中零序电压注入的相间功率均衡控制[J].西安工程大学学报,2024,38(2):34-40,7.基金项目
国家电网陕西省科技项目(SGSNXA00SNJS2312584) （SGSNXA00SNJS2312584）
