电网技术2016，Vol.40Issue(12)：3857-3864,8.DOI:10.13335/j.1000-3673.pst.2016.12.031
多直流馈入城市输电网谐波放大特性分析
Analysis on Harmonic Amplification Characteristics of Urban Transmission Network With Multi-Infeed DC System
金祖洋 1杨洪耕 1潘爱强2
作者信息
- 1. 四川大学电气信息学院,四川省成都市610065
- 2. 国网上海市电力公司电力科学研究院,上海市虹口区200437
- 折叠
摘要
Abstract
For harmonic amplification problems appearing in harmonic interaction process of DC terminals in urban transmission network with multi-infeed DC (MIDC) system,a harmonic amplification decoupling method based on modal analysis is proposed.Considering influence of harmonic amplification on node associated with system structure parameters and harmonic disturbance,node observation factor is proposed to determine nodes prone to be affected by harmonic amplification.Noticing that there exists difference in excitation degree of harmonic amplification among DC terminals' harmonic sources,harmonic source excitation factor is introduced to evaluate their effects.Focusing on use of HV long cables in urban transmission network,influence caused by distributed cable capacitances cannot be ignored.Therefore,element modal sensitivity is proposed to evaluate inductance-capacitance coupling effect between cables and inductive elements in the system.The proposed method is applied to an MIDC urban transmission network.The areas prone to be affected by harmonic amplification and contribution of harmonic source in each DC terminal are determined.Simulation results reveal influence rule of major cable length on harmonic amplification,providing a reference for cable planning of urban transmission network.关键词
感容耦合/谐波放大/模态分析/节点观测因子/谐波源激励因子/元件模态灵敏度Key words
inductance-capacitance coupling/harmonic amplification/modal analysis/node observation factor/harmonic source excitation factor/element modal sensitivity分类
信息技术与安全科学引用本文复制引用
金祖洋,杨洪耕,潘爱强..多直流馈入城市输电网谐波放大特性分析[J].电网技术,2016,40(12):3857-3864,8.
