电力系统及其自动化学报2017，Vol.29Issue(2)：1-6,55,7.DOI:10.3969/j.issn.1003-8930.2017.02.001
PET接入10kV有源配电网的谐振稳定评估及输入阻抗优化
Resonance Stability Assessment and Input Impedance Optimization of Power Electronic Transformer Connected to 10kV Active Distribution Network
摘要
Abstract
When power electronic transformer(PET)is connected to distribution network,it may cause stability prob-lems such as harmonic resonance. Accordingly,an analysis method of resonance stability and a principle of input imped-ance optimization are proposed for the PET connected to active distribution network. First,the topological structure and operation characteristics of PET connected to 10kV distribution network are analyzed;then,a stability assessment method is proposed for the PET connected to active distribution network based on the impedance ratio criterion;further-more,according to the frequency response characteristic curve of the PET filter impedance,the filter parameters of ca-pacitance and impedance in grid side are optimized to improve the dynamic stability of the PET connected to active dis-tribution network;finally,a simulation model of a 10kV active distribution network connected with three PETs is estab-lished considering the factors of electrical distance and filter impedance,etc. The effectiveness of the proposed stability assessment and impedance optimization method is verified by system simulation test.关键词
配电网/电力电子变压器/稳定性/阻抗比判据Key words
power distribution network/power electronic transformer(PET)/stability/impedance ratio criterion分类
信息技术与安全科学引用本文复制引用
葛云霞,李勇,韩继业,段义隆,曹一家,唐伟斌..PET接入10kV有源配电网的谐振稳定评估及输入阻抗优化[J].电力系统及其自动化学报,2017,29(2):1-6,55,7.基金项目
国家自然科学基金资助项目(61233008,51520105011) （61233008,51520105011）
科技部国际合作项目(2015DFR70850) （2015DFR70850）
湖南省科技计划资助项目(2015GK1002,2015RS4022) （2015GK1002,2015RS4022）
国家电网公司科学技术资助项目(面向智慧城市的智能电网园区能源优化管理关键技术研究与应用) （面向智慧城市的智能电网园区能源优化管理关键技术研究与应用）
