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.
出处
《建筑电气》
2013年第11期61-65,共5页
Building Electricity
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
Harmonic Unbalance factor of negative-sequence voltage Unbalance factor of zerosequence voltage Symmetrical component method Nonlinear load Experimental analysis Unbalance factor of fundamental negative-sequence voltage Unbalance factor of fundamental zero-sequence voltage
