Overload alleviation scheme based on real time power flow tracing in distribution network

2014 ◽  
Author(s):  
M. R. M. Dahalan ◽  
H. Mokhlis ◽  
A. H. A. Bakar ◽  
N. M. Sapari
Keyword(s):  
Real Time ◽  
Power Flow ◽  
Distribution Network ◽  
Power Flow Tracing

scholarly journals A Single-Phase Grounding Fault Judgment Method Based on Mutation Current Logic Matrix

2018 ◽  
Vol 160 ◽  
pp. 01007
Author(s):  
Wu Xiaobin ◽  
Xu Shihua ◽  
Zhao Hui ◽  
Zhang Wei
Keyword(s):  
Real Time ◽  
Distributed Generation ◽  
Power Flow ◽  
Single Phase ◽  
Distribution Network ◽  
Detailed Calculation ◽  
Current Threshold ◽  
Simulation Results ◽  
Capacitance Current ◽  
Parent Node

In order to solve the problem of single-phase grounding fault judgment in non-solid-earthed distribution network, the power flow in non-solid-earthed distribution is analyzed. A single-phase grounding fault judgment method based on mutation current logic matrix is proposed. The minimum fault judgment area model is constructed by the parent and child nodes. The feeder mutation current matrix is generated by the feeder real-time current matrix and the feeder history current matrix. The feeder mutation current matrix is transformed into the feeder mutation current logic matrix by the capacitance current threshold, and the non-zero elements of the feeder mutation current logic matrix are extracted into the mutation current logic sequence list. Then the single-phase grounding fault can be determined in the minimum fault judgment area of the last element of the mutation current logic sequence list as the parent node. The detailed calculation formulas are given. This method is also applicable to the non-solid-earthed distribution network containing distributed generation. The simulation results show that the method proposed in this paper has a good adaptability to the permanent grounding fault and it is worth popularizing.

Research on Loss Allocation of Power Distribution Network Based on Power Flow Tracing

2012 ◽  
Vol 516-517 ◽  
pp. 1425-1428
Author(s):  
Li Ming Wei ◽  
Jun Lin
Keyword(s):  
Distributed Generation ◽  
Electricity Market ◽  
Power Distribution ◽  
Power Flow ◽  
Distribution Network ◽  
Power Distribution Network ◽  
Loss Allocation ◽  
Before And After ◽  
Power Flow Tracing ◽  
New Challenges

The introduction of distributed generation will bring new challenges to the theory of power electricity market. The problem of loss allocation is one of them. In the paper three contents are introduced. Firstly, a loss allocation method is proposed for power distribution network with distributed generation. Secondly, the changes of loss allocation which introduction of distributed generation before and after brings about are analyzed and compared and relevant conclusions are obtained. Lastly, a typical mini-grid with a distributed generation is simulated. Simulation results prove the correctness and feasibility of the method.

The Research of the Real-Time Performance of Power Flow Visualization Based on Digital Power Distribution Network

2013 ◽  
Vol 791-793 ◽  
pp. 1884-1888
Author(s):  
Zai Lin Piao ◽  
Lu Wang ◽  
Juan Wang ◽  
Yong Xiang Wang
Keyword(s):  
Flow Visualization ◽  
Real Time ◽  
Power Distribution ◽  
Power Flow ◽  
Distribution Network ◽  
Power Distribution Network ◽  
The Real ◽  
Time Performance ◽  
Gis Data ◽  
Data Library

Based on the study of 10 kV digital power distribution network (DPDN) power flow visualization, the paper uses hierarchical backward and forward sweep algorithm (HBAFSA) to significantly shorten the calculation time and improve the real-time performance of power flow, which analysis and layers the distribution network topology according to the breadth-first search and then calculate in parallel between the same level. Programming with Visual C# in Visual Studio 2010 environment gets the GIS data library to actively obtain real-time operating data of distribution network from the SCADA data library, and calculates rapidly with the HBAFSA, and transfers the real-time power flow data to the GIS data library. On the platform of the GIS, clicking nodes and branches can get the visualized real-time power flow, which indicates the achievement of the real-time power flow of the DPDN visualization on the platform of the GIS.

Sign in / Sign up

Export Citation Format

Share Document