The Dynamic Analysis Approach Research of Voltage Stability

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.

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The Analysis of Voltage Stability in Power System

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.490-491.460 ◽

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.

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PSASP Power Grid Voltage Static Stability Analysis Method -Determine the System Key Node and the Region

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.339.591 ◽

2013 ◽

Vol 339 ◽

pp. 591-594

Author(s):

Guo Wei Ren ◽

Rui Ren ◽

Ning An

Keyword(s):

Stability Analysis ◽

Power System ◽

Voltage Stability ◽

Power Grid ◽

Static Stability ◽

Instability Mode ◽

Analysis Method ◽

Voltage Instability ◽

Power Load ◽

Key Nodes

In recent years, with the growth of the power grid power load, the power system voltage static stability problems gradually appear,The study found that, often from the system voltage stability the weakest node set off, and gradually into the surrounding weak (nodes) regional spread. How to determine the system key nodes and area is PSASP voltage static stability analysis method, from the essence of voltage stability and principle, to calculate the power of each node Leading voltage instability mode participation factors to determine the size of voltage stability judgment the weakest node or area.

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