The Analysis of Voltage Stability in Power System

2014 ◽  
Vol 490-491 ◽  
pp. 460-463
Author(s):  
Jun Feng Wang ◽  
Hui Zhou
Keyword(s):  
Stability Analysis ◽  
Dynamic Analysis ◽  
Voltage Stability ◽  
Algorithm Analysis ◽  
Analysis Method ◽  
Load Model ◽  
Static Voltage Stability ◽  
Dynamic Factors ◽  
Disturbance Analysis ◽  
Continuation Algorithm

In the static voltage stability analysis, we usually use the vertex of the P-U curve as the critical point of the voltage stability. This method can not reveal the problem of the physical essence of the voltage stability and the instability mechanism. We must adopt the dynamic analysis method to analyze the voltage stability from the dynamic factors. This paper discuss the small disturbance analysis method and the continuation algorithm analysis method of the dynamic analysis method, then research the mechanism of voltage collapse and the results of the dynamic analysis. At the same time, a load model and elements of the system dynamic model suitable for the voltage stability analysis is the key and difficult point of the voltage stability research.

The Dynamic Analysis Approach Research of Voltage Stability

2014 ◽  
Vol 487 ◽  
pp. 484-487
Author(s):  
Jun Feng Wang ◽  
Hui Zhou
Keyword(s):  
Dynamic Analysis ◽  
Voltage Stability ◽  
Algorithm Analysis ◽  
Analysis Method ◽  
Stability Studies ◽  
Load Model ◽  
Static Voltage Stability ◽  
Voltage Instability ◽  
Disturbance Analysis ◽  
Continuation Algorithm

Because we did not consider the dynamic characteristics of system components in static voltage stability analysis, the reliability of the static analysis of the results is reduced. So if we want to explain the mechanism of the voltage instability fundamentally, we must adopt the method of the dynamic analysis. This paper discuss the small disturbance analysis method and the continuation algorithm analysis method of the dynamic analysis method, then research the mechanism of voltage collapse and the results of the dynamic analysis. A load model and the dynamic system for the voltage stability studies is the key of the voltage stability to the maturity.

Expanding an Industrial Load Model for Short-Term Voltage Stability Analysis

ENERGYO ◽  
2018 ◽  
Author(s):  
Jose Eduardo Onoda Pessanha ◽  
Fabio M. Dasilva ◽  
Osvaldo Saavedra ◽  
Julio Cesar R. Buzar
Keyword(s):  
Stability Analysis ◽  
Voltage Stability ◽  
Short Term ◽  
Load Model

scholarly journals Static analysis of voltage stability with DFIG

2016 ◽  
Vol 19 (3) ◽  
pp. 5-12
Author(s):  
Binh Thi Thanh Phan ◽  
Thao Thi Thu Huynh ◽  
Au Ngoc Nguyen
Keyword(s):  
Stability Analysis ◽  
Modal Analysis ◽  
Static Analysis ◽  
Power Flow ◽  
Voltage Stability ◽  
Jacobian Matrix ◽  
Wind Generation ◽  
Power Network ◽  
Power Flow Calculation ◽  
Static Voltage Stability

The static voltage stability analysis is carried out by V-Q sensitivity or Q-V modal analysis. These analyses are based on the Jacobian matrix of power flow calculation. This is regarded as load bus stability analysis. With DFIG of PQ mode, the wind generation bus is considered as the PQ bus. Due to the limits of converters, these PQ buses became very special and this influences on the voltage stability examining. This paper also examines the penetration level and the location of wind generation injection based on voltage stability. The reliability of the algorithm is illustrated in a study of 14 buses power network.

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