Large-scale power system controlled islanding based on Backward Elimination Method and Primary Maximum Expansion Areas considering static voltage stability

2015 ◽  
Vol 67 ◽  
pp. 368-380 ◽  
Author(s):  
Farkhondeh Jabari ◽  
Heresh Seyedi ◽  
Sajad Najafi Ravadanegh
Keyword(s):  
Power System ◽  
Large Scale ◽  
Voltage Stability ◽  
Elimination Method ◽  
Maximum Expansion ◽  
Controlled Islanding ◽  
Static Voltage Stability ◽  
Backward Elimination

Impact of Large-Scale Wind Power Penetration on the Static Voltage Stability Based on the L Index

2015 ◽  
Vol 713-715 ◽  
pp. 1111-1114 ◽  
Author(s):  
Rui Huang Liu ◽  
An Cheng Xue ◽  
Ming Kai Li ◽  
Cheng Rong Li
Keyword(s):  
Power System ◽  
Wind Power ◽  
Large Scale ◽  
Voltage Stability ◽  
Static Voltage Stability ◽  
Simulation Based ◽  
Considerable Impact ◽  
The Impact

This paper uses the L indexes to analyze the impact of large-scale wind power penetration on the static voltage stability of the power system. First it presents some common indexes in analyzing voltage stability. Then, it introduces the principle of the L index. After that, Simulation based on the L Index of a typical power system interconnected with large-scaled wind power shows the grid alternatives have a considerable impact on the voltage stability. Finally it gives the conclusions.

A New Method for Static Voltage Stability Assessment based on The Local Loadability Boundary

2012 ◽  
Vol 13 (4) ◽  
Author(s):  
Thang Van Nguyen ◽  
Y. Minh Nguyen ◽  
Yong Tae Yoon
Keyword(s):  
Power System ◽  
Voltage Stability ◽  
Direct Method ◽  
Electric Power System ◽  
New Method ◽  
Stability Assessment ◽  
Saddle Node Bifurcation ◽  
Static Voltage Stability ◽  
Saddle Node ◽  
Thevenin Equivalent

Abstract This paper proposes a new method for assessing static voltage stability based on the local loadability boundary or P- Q curve in two dimensional power parameter space. The proposed method includes three main steps. The first step is to determine the critical buses and the second step is building the local loadability boundary or the saddle node bifurcation set for those critical buses. The final step is assessing the static voltage stability through the distance from current operating point to the boundary. The critical buses are defined through the right eigenvector by direct method. The boundary obtained by the proposed method that is combining a variation of standard direct method and Thevenin equivalent model of electric power system is a quadratic curve. And finally the distance is computed through the Euclid norm of normal vector of the boundary at the closest saddle node bifurcation point. The advantage of the proposed method is that it keeps the advantages of both efficient methods, the accuracy of the direct method and simple of Thevenin Equivalent based method. Thus, the proposed method holds some promise in terms of performing the real time voltage stability assessment of power system. Test results of New England 39 bus system are presented to show the effectiveness of the proposed method.

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