低压配电网的网损分析

分析了进贤县配电网因三相不平衡所带来的配电变压器损耗，利用改进算法精确计算了线路中的损耗，比较了配电网在几种不同模式下的网损。结果表明，采用多种配电模式相结合的措施对进贤配电网进行改造，可以较大程度地减小网损，提高负荷点电压质量和电网运行效率。基于此提出，进贤县“十二五”电网改造应该从维持三相平衡和采用合理的配电网模式入手，降低配电网损耗。另外，此方案也可为其他配电网降损改造提供参考。

Loss Analysis of A County's Distribution Network

The paper analyzes the transformer loss in Jinxian county＇s distribution network caused by three-phase unbalance,and calculates the line loss by using the improved algorithm,and compares the losses of distribution network under several different modes.The result shows that renovating the distribution network by multi distributing modes can greatly reduce the network loss,and effectively improve the voltage quality and operation efficiency.Based on above analysis,it is proposed that the Jinxian county＇s distribution network should be renovated by maintaining the three-phase balance and adopting rational distribution mode to reduce the network loss.This renovation scheme can be used as a reference for loss-reduction renovation of other distribution network.