The Placement of Facts Devices in Modern Electrical Network

2006 ◽  
Author(s):  
B. Sookananta ◽  
S. Galloway ◽  
G. M. Burt ◽  
J. R. McDonald
Keyword(s):  
Electrical Network ◽  
Facts Devices

scholarly journals Power Flow Control by Unified Power Flow Controller

2020 ◽  
Vol 39 (2) ◽  
pp. 257-266
Author(s):  
Umair Khalil ◽  
Muhammad Yousaf Ali Khan ◽  
Umer Amir Khan ◽  
Shahid Atiq
Keyword(s):  
Transmission Line ◽  
Power Flow ◽  
Reactive Power ◽  
Electrical Network ◽  
Unified Power Flow Controller ◽  
Transmission Systems ◽  
Line Load ◽  
Facts Devices ◽  
Generation Capacity ◽  
The Government

The demand of energy usage is increasing rapidly and to meet the energy requirements, best possible transmission systems should be adopted to avoid energy losses in our transmission systems. In Pakistan’s WAPDA (Water & Power Development Authority) system, the rapid increase in load and less generation capacity has increased load shedding thought the country. The government has planned to increase the generation capacity but the supply companies are facing line load-ability, environmental constraints, power limitations problems etc. Most of the supply companies prefer to extend the existing electrical networks instead of building new network to reduce financial burdens. In this paper the implementation of the FACTS (Flexible AC Transmission Systems) Devices in an electrical network is described. The FACTS devices enhance power transfer capacity of the line without adding new transmission line. These devices also protect the system from overloading in case of any contingency in the electrical network. The control of power flow, reactive power compensation and voltage control are the main capabilities of FACTS devices. This paper describes the impacts of FACTS devices on improving the voltage stability and power handling capability of a transmission line. The proposed methods for the controllable flow of active and reactive power in a transmission line are also elaborated. A simple electrical system is examined to explain the improvement in the constraints of power system using FACTS devices.

scholarly journals Power Flow Control by Unified Power Flow Controller

2019 ◽  
Vol 9 (2) ◽  
pp. 3900-3904
Author(s):  
M. Y. A. Khan ◽  
U. Khalil ◽  
H. Khan ◽  
A. Uddin ◽  
S. Ahmed
Keyword(s):  
Transmission Line ◽  
Power Flow ◽  
Reactive Power ◽  
Electrical Energy ◽  
Electrical Network ◽  
Unified Power Flow Controller ◽  
Electrical Networks ◽  
Facts Devices ◽  
Power Handling Capability ◽  
Ac Transmission

The demand for electricity is increasing day by day and we have to produce more electrical energy to meet the load demands. Most of the experts prefer to extend the existing electrical networks over building the new network with greater costs. In this paper, the implementation of the flexible AC transmission systems (FACTS) devices in a simple electrical network is described. FACTS devices enhance power transfer capacity of the line without laying out new transmission line. These devices also protect the system from overloading in case of any contingency in the electrical network. Moreover, this paper describes the impacts of FACTS devices on improving the voltage stability and power handling capability of a transmission line. The proposed methods for the controllable flow of active and reactive power in a transmission line are also elaborated. A simple electrical system is examined to explain the improvement in the constraints of power system using FACTS devices.

Genetic Algorithm Optimized Power Flow Control with Facts Devices

2013 ◽  
Vol 1 (4) ◽  
pp. 17-27
Author(s):  
G.N. Sreenivas ◽  
◽  
A. Yashoda Devi ◽  
K. Suresh Kumar ◽  
◽  
...  
Keyword(s):  
Genetic Algorithm ◽  
Flow Control ◽  
Power Flow ◽  
Power Flow Control ◽  
Facts Devices

LONG-TERM LOAD FO.RJXASTING AND ECONOMICAL OPERATION OF WIND FARMS FOR EGYPTIAN ELECTRICAL NETWORK

2007 ◽  
Vol 30 (1) ◽  
pp. 17-24
Author(s):  
S. M. Allam ◽  
G. M. Atta ◽  
A. A. Abou El-Ela ◽  
A. A. El-Zefiawy
Keyword(s):  
Wind Farms ◽  
Electrical Network

Optimal Placement of FACTS Devices for Voltage Stability Improvement with Economic Consideration Using Firefly Algorithm

2019 ◽  
Vol 14 (1) ◽  
pp. 5-11
Author(s):  
S. Rajasekaran ◽  
S. Muralidharan
Keyword(s):  
Power Systems ◽  
Voltage Stability ◽  
Firefly Algorithm ◽  
Transmission System ◽  
Operating Conditions ◽  
Optimal Placement ◽  
Voltage Collapse ◽  
Facts Devices ◽  
The Cost ◽  
Bus System

Background: Increasing power demand forces the power systems to operate at their maximum operating conditions. This leads the power system into voltage instability and causes voltage collapse. To avoid this problem, FACTS devices have been used in power systems to increase system stability with much reduced economical ratings. To achieve this, the FACTS devices must be placed in exact location. This paper presents Firefly Algorithm (FA) based optimization method to locate these devices of exact rating and least cost in the transmission system. Methods: Thyristor Controlled Series Capacitor (TCSC) and Static Var Compensator (SVC) are the FACTS devices used in the proposed methodology to enhance the voltage stability of power systems. Considering two objectives of enhancing the voltage stability of the transmission system and minimizing the cost of the FACTS devices, the optimal ratings and cost were identified for the devices under consideration using Firefly algorithm as an optimization tool. Also, a model study had been done with four different cases such as normal case, line outage case, generator outage case and overloading case (140%) for IEEE 14,30,57 and 118 bus systems. Results: The optimal locations to install SVC and TCSC in IEEE 14, 30, 57 and 118 bus systems were evaluated with minimal L-indices and cost using the proposed Firefly algorithm. From the results, it could be inferred that the cost of installing TCSC in IEEE bus system is slightly higher than SVC.For showing the superiority of Firefly algorithm, the results were compared with the already published research finding where this problem was solved using Genetic algorithm and Particle Swarm Optimization. It was revealed that the proposed firefly algorithm gives better optimum solution in minimizing the L-index values for IEEE 30 Bus system. Conclusion: The optimal placement, rating and cost of installation of TCSC and SVC in standard IEEE bus systems which enhanced the voltage stability were evaluated in this work. The need of the FACTS devices was also tested during the abnormal cases such as line outage case, generator outage case and overloading case (140%) with the proposed Firefly algorithm. Outputs reveal that the recognized placement of SVC and TCSC reduces the probability of voltage collapse and cost of the devices in the transmission lines. The capability of Firefly algorithm was also ensured by comparing its results with the results of other algorithms.

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