An AC/DC alternating power flow algorithm based on forward-backward sweep method for the distribution network with SST

2017 ◽  
Author(s):  
Fang Cao ◽  
Chang Liu
Keyword(s):  
Power Flow ◽  
Distribution Network ◽  
Sweep Method ◽  
Flow Algorithm ◽  
Forward Backward Sweep Method

Flexible Power Flow Algorithm for Distribution Network Including Second-Order Items

2014 ◽  
Vol 521 ◽  
pp. 440-443 ◽  
Author(s):  
Ning Zhou ◽  
Ru Si Chen ◽  
Tao Lin ◽  
Qiang Li ◽  
Xiang He ◽  
...  
Keyword(s):  
Distribution System ◽  
Network Flow ◽  
Power Flow ◽  
Distribution Network ◽  
Static Characteristic ◽  
Second Order ◽  
Electric Power System ◽  
Flow Equations ◽  
Good Convergence ◽  
Flow Algorithm

For intelligent distribution system including Distributed Generations, we take the generator and load static characteristic into account and propose a flexible power flow algorithm for distribution network including second-order items. First, this algorithm modifies the distribution network power flow equations including second-order items in order to meet the static characteristic of generator and load. Moreover, we use the fsolve function of MATLAB to solve the power flow equations. This algorithm makes full use of the characteristic of high accuracy of the distribution network flow equations including second-order items and good convergence of the fsolve function. Compared with conventional distribution power flow algorithm, it does not need to set the trend flexible node type of each one. Not only the voltage amplitude, phase information of each node and the system frequency information can be calculated, as well as the actual power of generator and loads. The result of the algorithm is more in line with the practical electric power system engineering. Improved IEEE33 node system is chosen to verify the correctness of the algorithm.

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