Based on a comparative study on the issues of the general line loss rate, the divided voltage line loss rate and the theoretical line loss rate which frequently occur in the practice of line loss management, it is concluded that the general line loss rate calculation based on the current industry standard can not provide effective guidance for engineering practice due to the continual growt.

Based on analyzing the reasons of the generation of the high-voltage line loss, this paper advances some measures for reducing the line loss.

Estimate analysis of low voltage line loss of Harbin power bureau;

This paper discusses on the structure of the line loss below 10 kV,analyzes on the reasons why the low voltage line loss is higher from technical and managerial angles,and puts forward some countermeasures for reducing the line loss.