Transient Stability Improvement of IEEE 9 Bus System Using Power World Simulator

Ramandeep Kaur,Divesh Kumar,T Srivastava,S Rani,S Kakkar

doi:10.1051/matecconf/20165701026

Abstract

The improvement of transient stability of power system was one of the most challenging research areas in power engineer.The main aim of this paper was transient stability analysis and improvement of IEEE 9 bus system. These studies were computed using POWER WORLD SIMULATOR. The IEEE 9 bus system was modelled in power world simulator and load flow studies were performed to determine pre-fault conditions in the system using Newton-Raphson method. The transient stability analysis was carried out using Runga method during three-phase balanced fault. For the improvement transient stability, the general methods adopted were fast acting exciters, FACT devices and addition of parallel transmission line. These techniques play an important role in improving the transient stability, increasing transmission capacity and damping low frequency oscillations.

Highlights

Now-a-days, it has become a necessity to maintain synchronism because the system is expanding dayby-day and these results in installation of larger machines
Power system stability is the property of power system that enables it to remains in a state of equilibrium under normal operating conditions and toregain equilibrium after being subjected to disturbances
Dynamic stability is the ability of a power system to remain in synchronism after the initial swing until the system has settled down to the new steady state equilibrium conditions

Summary

INTRODUCTION

Now-a-days, it has become a necessity to maintain synchronism because the system is expanding dayby-day and these results in installation of larger machines. Steady state stability is the capability of an electric power system to maintain synchronism between machines when small slow disturbance occurs. Dynamic stability is the ability of a power system to remain in synchronism after the initial swing until the system has settled down to the new steady state equilibrium conditions. The other objective of this paper that is improvement of IEEE 9 bus system is carried out using SVC, exciters and addition of parallel transmission line by Runga method. The reduction of reactances of various elements of the transmission network improves transient stability by increasing post fault synchronizing power transfer. This can be achieved by addition of parallel transmission lines in the system.

Power Flow Studies

Transient stability analysis

RESULTS AND DISCUSSION

CONCLUSION