三相不平衡运行对电网的影响及无功补偿方法研究

在低压配电网中由于存在的大量电感性负荷及三相负荷用电的不同时性,尤其是单相大容量负荷的使用,造成配电网处在不平衡状态下运行,这将给配电网带来很大危害,如造成电网功率因数低、增加配电网线路和设备的损耗,影响电网电能质量等。因此,研究三相不平衡电网运行的补偿理论和算法,实现配电网三相负荷平衡化。降低线路损耗和提高电能质量,都具有相当重要的经济意义和社会效益。

Study on the Influence of the Three-phase Unbalanced Operation and Methods of Reactive Power Compensation

Because of low voltage distribution network in the presence of a large number of three-phase inductive load which is not simultaneous. In particular, high-capacity single-phase loads, resulting in uneven distribution network in the state run distribution network that will bring great harm. Such as low power factor caused by increased distribution network lines and equipment loss, affecting power quality, etc. Therefore, the study of compensation three-phase unbalanced power network theory and algorithms to achieve load balancing of three-phase distribution system and reduce line losses and improve power quality, has important economic significance and social benefits.