非线性负荷条件下的电压不平衡度探讨  

Study on Voltage Unbalance Factor under Nonlinear Load

作　　者：吕强[1] 徐晔[1] 王金全[1] 宋鹏超[1] 

机构地区：[1]中国人民解放军理工大学国防工程学院,南京市210007

出　　处：《建筑电气》2013年第11期61-65,共5页Building Electricity

摘　　要：阐述低压配电系统中谐波电压不平衡带来的危害,分析对称分量法在谐波条件下的应用原理;针对国家标准对电压不平衡度的规定,探讨负序电压综合不平衡度与零序电压综合不平衡度的定义;用实验证明理论分析的正确性;通过分析指出非线性负荷条件下考虑谐波电压不平衡的必要性。Damages caused by the unbalance of harmonic voltage in a low-voltage distribution system are discussed, the application principle of the symmetrical component method based on harmonics is analyzed; taking into account the regulations on voltage unbalance factor specified in national standard, the definition of the comprehensive unbalance factor of negative-sequence voltage and that of zero-sequence voltage are studied; the correctness of the theoretical analysis is proved by experiments; and the necessity of considering the unbalance of the harmonic voltage under nonlinear load is revealed through analysis.

关 键 词：谐波 负序电压不平衡度 零序电压不平衡度 对称分量法 非线性负荷 实验分析 基波负序电压不平衡度 基波零序电压不平衡度 

分 类 号：TU852[建筑科学]