电气传动2025，Vol.55Issue(9)：77-86,10.DOI:10.19457/j.1001-2095.dqcd25703
多母线直流系统谐振交互与谐波传递机理研究
Research on Resonant Interaction and Harmonic Transmission Mechanism in Multi-bus DC Systems
摘要
Abstract
The characteristics of the DC side of the DC distribution network are multi bus cascades,multiple converters,and strong coupling of the buses,which can easily cause harmonic resonance and threaten the safe operation of system equipment.Aims at the problem of unclear resonance interaction and harmonic transmission mechanism between DC busbars,firstly,a harmonic impedance model of a multi-bus DC system was constructed,in which the coupling effect of isolated and non-isolated interlinking converters has been taken into account.Based on this model,the distribution and influence range of harmonic resonance in the multi-bus DC system were studied from the perspectives of resonance excitability and observability.Then,based on the coupling transfer coefficient model of the intermediate converter,the influence mechanism and law of the interlinking converter on the resonant interaction between the two DC busbars were explored,and a method of optimizing the parameters of the interlinking converter to suppress the resonant interaction between the busbars was proposed.Finally,a simulation model of a multi-bus DC system was constructed to verify the correctness of the theoretical analysis and the effectiveness of the proposed optimization approach for interlinking converter parameters.关键词
直流/电能质量/谐波谐振/交互作用/中间变换器Key words
DC/power quality/harmonic resonance/interaction/intermediate converter分类
信息技术与安全科学引用本文复制引用
陈勇,李建标,陈建福,裴星宇,吴宏远,黄春宇..多母线直流系统谐振交互与谐波传递机理研究[J].电气传动,2025,55(9):77-86,10.基金项目
中国南方电网有限责任公司科技项目(GDKJXM20222186) （GDKJXM20222186）
