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
A Review on Implementation of UPFC for improvement of active power flow capability in power system using IEEE 14 bus system Miss. Suvarna V. Patil1, Prof. Kalpesh Mahajan2 1 M.E. 2
Student, Department of Electrical Engineering, KCE’s COEIT, Jalgaon, Maharashtra, India
H.O.D, Department of Electrical Engineering, KCE’s COEIT, Jalgaon, Maharashtra, India
---------------------------------------------------------------------***---------------------------------------------------------------------
Abstract - Flexible AC Transmission System (FACTS)
thermal limits. In UPFC, the transmitted power can be controlled by changing three parameters of power transmission line namely transmission magnitude voltage, impedance and phase angle.
Flexible alternating current transmission systems (FACTS) technology opens up new opportunities for controlling power and enhancing the usable capacity of present, as well as new and upgraded lines.. The Unified Power Flow Controller (UPFC) is a Flexible AC transmission system (FACTS) uses the thyristor controlled devices that can control all the three system variables namely can change parameters like impedance, voltage and phase angle difference of voltage across the line. For governing, UPFC is the most complex but promising power electronics system. This paper presents control and performance of Unified Power Flow Controller (UPFC) is investigated in controlling the flow of power over the transmission line. It can be present real and reactive power flow control through a transmission line by place Unified Power Flow Controller is studied to improve the power flow over a transmission line in a standard IEEE 14 bus system.
This device combination of two other FACTS devices: the Static Synchronous Compensator (STATCOM) and the Static Synchronous Series Compensator (SSSC). Practically, these two devices are two Voltage Source Inverters (VSI’s) connected respectively in shunt with the transmission line through a shunt transformer and in series with the transmission line through a series transformer. These are connected to each other by a common DC link, which is a typical storage capacitor [7-12].
2. LITERATURE REVIEW Tanushree Kaul, Pawan Rana et. al. 2013[12] In the recent years ecological concerns and high installation costs have put constraints over construction of new plants and overhead lines in many countries, thereby forcing existing system to be used more efficiently rather than constructing new lines, industry has tended towards the development of technologies or devices that increase transmission network capacity while maintaining or even improving grid stability. Our main objective is to meet the electric load demand reliably while simultaneously satisfying certain quality constraints imposed on the power supply.
Key Words: FACTS, real and reactive power flow, IEEE 14 bus system, IGBT, UPFC 1. INTRODUCTION The Flexible ac transmission a system (FACTS) is the combination of the power “electronics” devices to controls the power flow and the quantities in power system. Its first concept was introduced by N.G Hingorani, in 1988 (FACTS) is very popular and essential device in power systems [1]. In order to have a better use of the transmission capabilities of the transmission lines, different types of FACTS devices have been studied: Static VAR Compensator (SVC), Thyristor controlled series capacitor (TCSC),Static synchronous compensator (STATOM), Static series compensator (SSSC), Unified Power Flow Controllers (UPFCs), thyristor switched capacitor (TSC) thyristor controlled reactor (TCR) [4-12]. Several FACTS-devices have been introduced for various applications in power system.
Mithilesh Singh, Shubhrata Gupta et.al. 2016 [15] FACTS devices which can change the routes of exchanged powers through the transmission lines by changing angle of bus voltage, amplitude as well as reactance of transmission lines. In this paper technological development with modeling of FACTS devices shown to increase li ne load ability and reduce the transmission congestion by voltage profile improvement. The UPFC is one of the FACTS controllers that can manage the power flow in transmission line by inserting reactive and active voltage component in series with the line. The effectiveness of the FACTS controller mainly depends on their location so main objectives are voltage stability and voltage profile improvement, loss reduction, fuel cost reduction and economical approach for minimize the overall system cost.
UPFC is the most flexible multi-functional FACTs device which is a new generation of FACTS devices proposed by Gyugyi in 1991. UPFC is a Combined Series-Shunt Controllers. The UPFC is one of the most versatile devices. In interconnected power systems, it is important to have control over power transfer [5]. This can improve stability and allow transmission lines to be loaded closer to their
© 2017, IRJET
|
Impact Factor value: 5.181
|
ISO 9001:2008 Certified Journal
| Page 542