电网技术2017，Vol.41Issue(6)：1726-1733,8.DOI:10.13335/j.1000-3673.pst.2016.2088
柔性直流配电网纹波形成机理与叠加特性
Ripple Formation Mechanism and Superimposition Characteristics for Flexible DC Distribution Network
摘要
Abstract
DC distribution network is a new trend for future distribution systems. Power quality problem will be an attention focus in its application. For this problem, ripple is influenced by many factors. In order to clarify issues related to ripple, this paper considers topology and characteristics of AC side converter and analyzes non-ideal characteristics of AC load and other undesirable factors of AC grid causing DC ripple. On this basis, from point of positive, negative and zero sequence harmonics, DC side ripple and its superimposition in condition of AC three-phase symmetric and asymmetric cases are studied in frequency domain. Relationship between ripple superposition and AC harmonic characteristics is also presented. Simulation examples of DC distribution network verify validity of theoretical analysis.关键词
直流配电网/电能质量/电压源变流器/纹波叠加特性Key words
DC distribution network/power quality/voltage source converters/ripple superposition characteristics分类
信息技术与安全科学引用本文复制引用
焦晋荣,贾清泉,王宁,林飞飞,郑旭然..柔性直流配电网纹波形成机理与叠加特性[J].电网技术,2017,41(6):1726-1733,8.基金项目
国家自然科学基金项目(51477147) （51477147）
河北省教育厅资助科研项目(QN2015124). Project Supported by National and Natural Science Foundation of China(51477147) （QN2015124）
The Foundation of Hebei Province Department of Education(QN2015124). （QN2015124）
