International Research Journal of Engineering and Technology (IRJET) Volume: 04 Issue: 02 | Feb -2017
www.irjet.net
e-ISSN: 2395 -0056 p-ISSN: 2395-0072
REACTIVE POWER COMPESATION USING STATIC SYNCRONOUS SERIES COMPENSATOR-A REVIEW Vishal A. Manwar1, Sumit D. Dhakulkar2, Subhash G. Banole3, Prof. Bhushan S. Rakhonde4
UG, 4Assistant Professor, Electrical Engineering Department, DES’sCOET, Maharashtra, India ---------------------------------------------------------------------***--------------------------------------------------------------------1, 2, 3
Abstract - The concept of reactive power compensation
technologies. By means of reactive power compensation techniques, reactive power is controlled in such a way that the performance of electric power system gets improved. This is gives the brief idea about the principles of operation, design characteristics of various types of compensators etc. These compensation techniques are used to change the performance of AC transmission & distribution systems as per the need. The compensators enhance the stability of the AC system by increasing the maximum active power that can be transmitted. By managing the line reactive power, the working of overall electric power system can be enhanced. In the case study, after implementing series and shunt compensation techniques in the system, results are shown for comparison. This can be achieved by FACTS controllers. Static Synchronous Series Compensator (SSSC) is a series connected FACTS controller, which is capable of providing reactive power compensation to a power system. The output of an SSSC is series injected voltage, which leads or lags line current by 90°, thus emulating a controllable inductive or capacitive reactance. SSSC can be used to reduce the equivalent line impedance and enhance the active power transfer capability of the line. In this series compensation provided by an SSSC is considered.
Keywords:
AC transmission, Compensation, FACTS, Reactive Power, SSSC
1. INTRODUCTION Now a day, nothing is possible without electricity. Without electricity modern society would cease to function. As the volume of Power transmitted and distributed increases, so do the requirements for a high quality and reliable supply. Thus, reactive power control and voltage control in an electrical power system is important for proper operation for electrical power equipment to prevent damage such as overheating of generators and motors , to reduce transmission losses and to maintain the ability of the system to withstand and prevent voltage collapse. As the power transfer growth, the power system becomes increasingly more complex to operate and the system become less secure. It may lead to large power with inadequate control, excessive reactive power in various parts of the system and large dynamic swings between different parts of the system thus the full potential of transmission interconnections cannot be utilized. In power transmission,reactive power plays an important role. Real power accomplishes the useful © 2017, IRJET
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work while reactive power supports the voltage that must be controlled for system reliability.
Fig. 1: Classification of Reactive Power Compensation Reactive power has a profound effect on the security of power systems because it affects voltages throughout the system. Decreasing reactive power causing voltage to fall while increasing it causing voltage to rise. A voltage collapse may be occurs when the system try to serve much more load than the voltage can support. Voltage control and reactive power management are the two aspects of a single activity that both supports reliability and facilitates commercial transactions across transmission networks. Voltage is controlled by absorbing and generating reactive power. Thus reactive power is essential to maintain the voltage to deliver active power through transmission lines. Different reactive power compensation methods are shown in fig.1 Classification of Reactive power compensation. The rapid development of power electronics technology provides exciting opportunities to develop new power systems equipment for better utilization of existing systems. During the last decade a number of control devices under the term Flexible AC Transmission Systems (FACTS) technology have been proposed and implemented. The FACTS devices can be used for power flow control, loop flow control, load sharing among parallel corridors, voltage regulation, and enhancement of transient stability and mitigation of system oscillations. FACTS have become an essential and integral part of modern power systems. Modeling and digital simulation plays an important role in the analysis, design, testing and commissioning of such ISO 9001:2008 Certified Journal
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