Rotor Angle and Voltage Stability Analysis with Fault Location Identification on the IEEE 9 Bus System

H F Khan,A H Hanif,N Anwar

doi:10.48084/etasr.3175

Abstract

Transient stability is very imperative in multi-machine interconnected power systems in order to scrutinize and analyze the system’s performance and response. Rotor angle stability and voltage stability are studied in this paper. By applying three-phase symmetrical faults, the transient stability of the IEEE 9 bus system is studied. A characteristic double hump is analyzed in the response of the generator, which is nearer to the fault location. By analyzing the characteristic double hump, the fault location in a large interconnected power system can be determined. It is shown that, as the fault is cleared, the system takes some finite time to return to its prior state. IEEE 9 bus system is chosen as a test system, which standard parameters. MATLAB Simpower System toolbox is used for load flow and transient stability analysis.

Highlights

There are three stages in a power system, generation, transmission, and distribution [1]
Steady State stability is restricted to small change, i.e. bus voltage should be close to their nominal value
Transient Stability refers to large disturbance(s) after which a system returns to its original state, otherwise that system may get unstable [11]

Summary

Introduction

There are three stages in a power system, generation, transmission, and distribution [1]. A fault at any location in the system can distress the system’s performance [5] and under this scenario, transient stability is very significant in designing the electric power system [6]. A power system is designed to maintain continuous power supply to consumers and voltage stability when unwanted events, like short circuits, lightening strokes, etc., occur [7]. Due to these faults, one or many generators can be out of synchronism causing a disproportion between generation and demand [8]. Transient Stability refers to large disturbance(s) after which a system returns to its original state, otherwise that system may get unstable [11]. Steady State Stability is a function of only an operating point whereas, Transient Stability is a function of both initial condition and the State when a disturbance occurs [13]

Methods

Results

Conclusion