Voltage stability of electrical power networks with high penetration level of wind generation

Abstract EN

Voltage instability is considered as one of the main threats to secure operation of power system networks around the world.

Nowadays, Integration of large-scale wind power may have severe impacts on the power system operation.

Stable, reliable and economic operation of the power system under the massive integration of wind power is a big challenge to power system operators.

This paper scrutinizes to study the voltage stability problems for the integration of wind power to the IEEE-39 bus-systems.  


 


The main objective of this study is to analyze the voltage stability of the IEEE-39 bus networks with large-scale wind power under normal operation using PV and QV analyses.

As one of the classic static Voltage stability assessment (VSA) method, the P-V curve is widely used in identifying the weak buses in one power system.

Normally, there is a required range of bus voltage variation that restricts load with fixed power factor within a maximum value.

The loading margin can be defined as the distance between the operating point and the maximum load.

These steady-state methods, which inherently require less computational capability, can indicate the level of stability of a power system.

Therefore, QV curves analysis tools are used in this paper.

 


 


The importance of accurate representation of the reactive power capabilities of wind generators in voltage stability studies was emphasized in the analyses.

These analyses define the amount of reactive power required to enhance voltage stability and hence can be improved by adding suitable reactive power compensator.

Here STATCOM is used as a reactive power compensator.

Simulation of the 39 bus-IEEE network with integrated wind generators are developed using PSS/E software.