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文章摘要
考虑电网不平衡影响的配电网故障仿真分析
Fault Simulation Analysis of Distribution Network Considering Unbalanced Power Grid Effects
Received:August 29, 2018
Revised:August 29, 2018
DOI：
中文关键词
:
小电流接地系统
三相不平衡
单相接地故障
Matlab
接地选线
英文关键词
:
基金项目
:
国家重点基础研究发展计划（973计划）
Author Name
Affiliation
E-mail
Wang Chaoyan
*
China University of Mining and Technology
570778051@qq.com
董海波
童紫原
童敏明
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中文摘要
:
针对配电网因三相不平衡而导致的现有选线方法选线效果不理想的现状，分析了三相不平衡产生的原因，通过对对地电容不平衡、负荷不平衡以及电流互感器参数不对称引起的不平衡电流进行理论分析，论证系统三相不平衡下会产生零序电流，造成选线失败。为提取在电网不平衡下的单相故障特征信号，用Matlab/Simulink软件搭建了三相不平衡谐振接地系统的配电网单相故障仿真模型，改变仿真模型的参数模拟电网不平衡下电网单相接地故障。通过对不平衡配电网单相故障进行大量仿真实验，分析了现有选线方法在三相不平衡条件下选线效果，为研究电网不平衡条件下的单相故障选线方法提供理论依据。
英文摘要
:
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