10kV线路杆.上补偿与配变低压侧补偿的对比分析

配电网中最常用的无功补偿方式主要有杆.上无功补偿以及配电变压器低压侧集中补偿。为对这两种方式进行量化对比分析,在对线路杆.上补偿和配电变压器低压侧补偿的理论分析基础上,建立评价指标体系,通过对10 kV典型线路建模并进行仿真潮流计算和无功优化,量化对比分析不同负荷水平下杆.上无功补偿和配电变压器低压侧补偿的效果.结果表明:配电变压器低压侧补偿更有利于无功功率的就地补偿,并且能够减少网络损耗,提高系统运行的经济性。

Contrastive analysis of reactive compensation on tower and low -voltage side of distribution transformer for 10 kV transmission line

The most commonly used reactive power compensation is the reactive compensation on tow-er and reactive-power compensation at low-voltage side of distribution transformer in the distribu-tion network. In order to make a quantitative comparison and analysis of the two methods, based onthe theoretical analysis, an evaluation index system is established, 10 kV line model is simulated andthe power flow calculation and reactive power optimization are carried out. The results of reactive com-pensation and low voltage side compensation with different load levels are quantitatively compared andanalyzed. It is concluded that the low-voltage side compensation of the distribution transformer ismore favorable for the local compensation of the reactive power, which can reduce the network loss and improve the economy of the system operation.