Low-Voltage Distribution Network Theoretical Line Loss Calculation System Based on Dynamic Unbalance in Three Phrases

2010 ◽  
Author(s):  
Ni Feng ◽  
Yu Jianming
Keyword(s):  
Low Voltage ◽  
Distribution Network ◽  
Voltage Distribution ◽  
Loss Calculation ◽  
Theoretical Line ◽  
Line Loss ◽  
Calculation System ◽  
Dynamic Unbalance

Improved Equivalent Resistance Method for Low-Voltage Distribution Line Loss Calculation

2014 ◽  
Vol 1008-1009 ◽  
pp. 417-420 ◽  
Author(s):  
Xiao Hui Liu ◽  
Lin Ma ◽  
Yun Song Shi ◽  
Yu Jiang Wang ◽  
Jun Hua Li
Keyword(s):  
Low Voltage ◽  
Equivalent Resistance ◽  
Voltage Distribution ◽  
Phase Current ◽  
Resistance Method ◽  
Loss Calculation ◽  
Three Phase ◽  
Distribution Line ◽  
Line Loss

Aiming at the insufficiency of Equivalent Resistance Method for a low-voltage distribution line loss calculation, this article has been improved. Then this paper presents the method of using three-phase quantity of electricity to calculate three-phase current, it can calculate the three-phase unbalanced line loss without current date and facilitate the application of Three-phase Unbalanced Method. It develops our own program based on Visio to calculate low-voltage distribution line loss. The results showed: Improved Equivalent Resistance Method improves the accuracy; in the three-phase unbalanced the method of using three-phase quantity of electricity to calculate three-phase current is more easily modified and more practical value.

Theoretical Line Loss Calculation in 10kV Power Distribution Network Based on an Improved Alternative Method

2012 ◽  
Vol 241-244 ◽  
pp. 687-692
Author(s):  
Bing Xia Chen ◽  
Jian Cheng Tan
Keyword(s):  
Power Distribution ◽  
Reactive Power ◽  
Distribution Networks ◽  
Power Networks ◽  
Power Distribution Network ◽  
Loss Analysis ◽  
Loss Calculation ◽  
Theoretical Line ◽  
Line Loss ◽  
Calculation System

Theoretical line loss calculation is the basis of making line loss analysis and loss-reduction decision. Due to technical constraints in the past, traditional algorithms on theoretical line loss calculation used a large number of simplified calculations. This paper proposes a new online method of line loss calculation in distribution networks which is based on PQU (active power, reactive power and voltage) load curves. Based on a new kind of metrical equipment and the proposed method, the power loss calculation system has been developed and has been tested on several rural power networks. The results prove that the method improves the assumptions of traditional algorithms and calculation precision.

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