International Journal of Electrical and Electronics Research ISSN 2348-6988 (online) Vol. 10, Issue 1, pp: (1-7), Month: January - March 2022, Available at: www.researchpublish.com
Enhancement of Transient Stability of a Series Compensated Long Transmission Line by Using Series Facts Controller 1
Harsh Kumar, 2Mr. Lokesh Garg, 3Abhishek Kumar Vishwakarma 1,2,3
Electrical Engg. Deptt. Galgotias University, Greater Noida, India
Authors email: hk39952@gmail.com, lokeshgarg123@gmail.com, abhishekvish098@gmail.com
Abstract: This paper show analysis for enhancement of transient stability of power system with variable series compensation of transmission line. The transient stability analysis is done for an IEEE 9 Bus system with a Three phase fault. Created at a Bus and the simulation is on PSAT in MATLAB. The time domain simulation that series FACTS Controller. Thyristor control series capacitor (TCSC) and Static Synchronous Series Compensated (SSSC) .TCSC,SSSC has enhanced that transient performance of the system by damping out the power oscillation under large disturbance condition with less settling time . In this paper three case are consider. (i) Steady State System (ii) Fault System (iii) Transient Stability enhanced system with TCSC & SSSC . The simulation result show effective of variable series compensation. Keywords: IEEE-9 Bus System, PSAT (Power System Analysis toolbox, SSSC, TCSC, Transient stability, FACTS Controller.
1. INTRODUCTION A power system is a complex network comprising of numerous generator, transmission line variety of loads and transformer. As a consequence of increasing power demands . some transmission line are more loaded than was planned when they were built . with the increase loading of long transmission line the problem of transient stability after a major fault can become a transmission limiting factor. [1]Transient stability of a system refer to the stability when subject to long distance such as fault and switched of line. [2] The resulting system response involve a large excursion of generator rotor angle and is influenced by the nonlinear power analysis relationship stability depends upon both the initial operating condition of the system and the severity of the distance. The FACTS have gained a great interest during the last few years due to recent advance in power electronic. FACTS device have been mainly used for solving various power system steady state control problem such as voltage regulation, power flow control and transfer capability enhancement. As supplementary function damping the interea modes and enhancing power system stability using FACTS controller have been extensively studies and investigated. Generally it is not cost effective to install FACTS device for the sole purpose of power stability enhancement. The TCSC is the important member of FACTS family that is increasing applied with long transmission line by the utility in morden power system. It can have various role in the operation and control of power system such as scheduling power flow decrease unsymmetrically component reducing net loss; providing voltage support. The SSSC is a member of FACTS family which is connect in series with a power system. It consist of a solid state voltage source convert which is generates a controllable alternating current voltage at fundamental frequency which in injected voltage is kept in quadrant with the line current it can emulate as inductive or capacitive reduce So as influence the power flow through the transmission line.
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