【摘要】 为进一步掌握居民负荷电能质量状况 ,对北京 2 0个居民配电小区和 3座居民楼进行了长时间的谐波监测 ,研究分析了居民负荷谐波电流的方向、序性 ,谐波电压的序性、谐波电流与电压的关系、配电变压器接法对谐波电压的影响 ,提出了改进措施 ,并通过实验验证了本措施将对提高低压电网的电能质量的作用。更多还原

【Abstract】 In order to know the power quality status of residential load well, a long period monitoring of harmonics is performed for twenty residential areas and three inhabitant buildings in Beijing. The direction and sequence of harmonic current, the sequence of harmonic voltage and the relation between harmonic current and voltage in these areas are studied. The theoretical analysis of the influence of transformer winding connection on harmonic voltage is carried out. The relevant improvement measures are put forward and validated.更多还原