低压配电网三相不平衡问题及处理对策探究

在现今的低压配电网中,用户用电的接线方法一般都是单相接线,然而在电力系统中的接线方式却是三相接线,两者之间出现差异,就会产生三相不平衡。在低压配电网中出现三相不平衡的情况会给电力系统带来很多不好的影响。比如会使得电网系统受到损害,能耗增加,电网的线路也会遭受一定的危害,导致变压器出力不对,造成电压下降,进而影响到电力系统的电能质量,并对一些特殊用户所需的电能质量带来了极大的影响。

In today's low-voltage distribution network,because the wiring method of user electricity is generally single-phase connection,but in the power system,the connection mode is three-phase connection,there is a difference between the two,there will be three-phase imbalance.The situation of three-phase imbalance in low-voltage distribution network will bring a lot of bad effects to the power system.For example,it will damage the power grid system,increase energy consumption,and the power lines of the power grid will also suffer certain harm,resulting in incorrect transformer output,resulting in voltage drop,and then affecting the power quality of the power system.This has a great impact on the power quality needed by some special users.