International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395 -0056
Volume: 04 Issue: 04 | Apr -2017
p-ISSN: 2395-0072
www.irjet.net
Transient Stability Improvement in Transmission System Using SVC with fuzzy logic Control Aashutosh Khasdeo Assistant Professor, Dept of Electrical & Electronics Engineering, LNCT Bhopal, MP, India ---------------------------------------------------------------------***---------------------------------------------------------------------
Abstract - In power system the transmission line are
Static Var Compensator (SVC) is a shunt type FACTS which is used in power system primarily for the purpose of voltage and reactive power control in the power system network [5]. The optimal location and design of two kinds of FACTS, namely the SVC and the TCSC. The SVC is defined as a shunt connected static Var generator or consumer whose output is adjusted to exchange capacitive or inductive so as to maintain or control specific parameters of electrical power system, typically a bus voltage [6]-[8]. Combines a series capacitor bank shunted by thyristor controlled reactor. Then, the SVC can be considered as a synchronous compensator modeled as bus, with Q limits designed by its rated size Qsvc.
becoming more advanced and stressed due the increase in load. The new technology which is known as Flexible AC transmission system (FACTS) devices, are found very extensively to reduce this stress without disturbing the desired stability margin. In this paper, a fuzzy logic based supplementary controller for Static Var Compensator (SVC). Flexible AC Transmission System (FACTS) controllers, such as Static VAR Compensator (SVC) and Static Synchronous Compensator uses the latest technology of power electronic switching devices in electric power transmission systems to control voltage and power flow, The stability enhancement can be done by using FACTS controllers. In this paper, a fuzzy logic based supplementary controller for Static Var Compensator (SVC) is developed which is used for improve the power quality of generated and distributed power. The designed model has been tested in a 2 machine 3 bus test system using MATLAB software. The simulation results show that the new controller logic gives better and quick performance compared to the other types . Key Words: SVC, compensator, Fuzzy logic, MATLAB.
In this paper, a new model is proposed to incorporate the advantages of both PI and Fuzzy Controller, thereby improving the performance of SVC. The model is tested using a 2 machines 3 bus test system and MATLAB software is used to perform the simulation studies. The performance analysis of the new controller is done by subjecting the system to a three phase fault. The results obtained shows that the proposed controller gives better performance in damping the oscillations during the disturbances and also in regulating other parameters like terminal voltage and transmission line reactive power[10][12].
1. INTRODUCTION In power system the transmission line are becoming more advanced and stressed due the increase in load. The new technology which is known as Flexible AC transmission system (FACTS) devices, are found very extensively to reduce this stress without disturbing the desired stability margin. In this paper, a fuzzy logic based supplementary controller for Static Var Compensator (SVC) [1]. Flexible AC Transmission System (FACTS) controllers, such as Static VAR Compensator (SVC) and Static Synchronous Compensator use the latest technology of power electronic switching devices in electric power transmission systems to control voltage and power flow. The stability enhancement can be done by using FACTS controllers [2]. In this paper, a fuzzy logic based supplementary controller for Static Var Compensator (SVC) is developed which is used for improve the power quality of generated and distributed power [3]. The designed model has been tested in a 2 machine 3 bus test system using MATLAB software. The simulation results show that the new controller logic gives better and quick performance compared to the other types [4].
Š 2017, IRJET
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1.1 SVC Operation SVC is a shunt connected static var generator or consumer whose output is adjusted to exchange capacitive or inductive so as to maintain or control specific parameters of electrical power system, typically, a bus voltage. The voltage can be regulated by controlling its equivalent reactance. SVC is built of reactors and capacitors, controlled by thyristor controlled reactors (TCR) which are parallel with capacitor bank as shown in fig. 1.1.
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