Transient stability assessment of power systems in the presence of shunt compensators using trajectory sensitivity analysis

Author

Nasri, Amin ; Ghandhari, M. ; Eriksson, Robert

Author_Institution

Dept. of Electr. Power Syst., KTH R. Inst. of Technol., Stockholm, Sweden

fYear

2013

fDate

21-25 July 2013

Firstpage

1

Lastpage

5

Abstract

Trajectory sensitivity analysis (TSA) is used as analysis tool for suitable placement of shunt compensators in the power system. The goal is to maximize the benefit of these devices in order to enhance the transient stability of the system. For this purpose, the trajectory sensitivities of the rotor angles of generators with respect to the reactive power injected into different nodes of the system are calculated in the presence of most probable severe faults. Based on the obtained trajectory sensitivities, a method is proposed to determine how effective the shunt compensation in each node is for improving the transient stability. This method is applied to the IEEE 3-machine 9-bus to find the priorities of system´s nodes for installation of shunt compensators. Simulation with industrial software shows the validity and efficiency of the proposed method.

Keywords

power system transient stability; sensitivity analysis; static VAr compensators; TSA; generators rotor angles; power system transient stability assessment; reactive power; shunt compensators; trajectory sensitivity analysis; Generators; Power system stability; Sensitivity; Stability analysis; Trajectory; Transient analysis; Critical Clearing Time (CCT); Static Synchronous Compensator (STATCOM); Trajectory Sensitivity Analysis (TSA); Transient Stability;

fLanguage

English

Publisher

ieee

Conference_Titel

Power and Energy Society General Meeting (PES), 2013 IEEE

Conference_Location

Vancouver, BC

ISSN

1944-9925

Type

conf

DOI

10.1109/PESMG.2013.6672163

Filename

6672163