scholarly journals A Hybrid Approach for Power System Security Enhancement via Optimal Installation of Flexible AC Transmission System (FACTS) Devices

Energies ◽  
2017 ◽  
Vol 10 (9) ◽  
pp. 1305 ◽  
Author(s):  
Tong Kang ◽  
Jiangang Yao ◽  
ThanhLong Duong ◽  
Shengjie Yang ◽  
Xiangqian Zhu
Keyword(s):  
Power System ◽  
Hybrid Approach ◽  
System Security ◽  
Transmission System ◽  
Power System Security ◽  
Flexible Ac Transmission ◽  
Security Enhancement ◽  
Flexible Ac Transmission System ◽  
Facts Devices ◽  
Ac Transmission

Congestion management in deregulated power system using hybrid cat-firefly algorithm with TCSC and SVC FACTS devices

2016 ◽  
Vol 35 (5) ◽  
pp. 1524-1537 ◽  
Author(s):  
Naraina Avudayappan ◽  
S.N. Deepa
Keyword(s):  
Power System ◽  
Congestion Management ◽  
Power Line ◽  
Transmission System ◽  
Optimal Placement ◽  
Content Type ◽  
Flexible Ac Transmission ◽  
Flexible Ac Transmission System ◽  
Facts Devices ◽  
Ac Transmission

Purpose The loading and power variations in the power system, especially for the peak hours have abundant concussion on the loading patterns of the open access transmission system. During such unconditional state of loading the transmission line parameters and the line voltages show a substandard profile, which depicts exaction of congestion management of the power line in such events. The purpose of this paper is to present an uncomplicated and economical model for congestion management using flexible AC transmission system (FACTS) devices. Design/methodology/approach The approach desires a two-step procedure, first by optimal placement of thyristor controlled series capacitor (TCSC) and static VAR compensator (SVC) as FACTS devices in the network; second tuning the control parameters to their optimized values. The optimal location and tuning of TCSC and SVC represents a hectic optimization problem, due to its multi-objective and constrained nature. Hence, a reassuring heuristic optimization algorithm inspired by behavior of cat and firefly is employed to find the optimal placement and tuning of TCSC and SVC. Findings The effectiveness of the proposed model is tested through simulation on standard IEEE 14-bus system. The proposed approach proves to be better than the earlier existing approaches in the literature. Research limitations/implications With the completed simulation and results, it is proved that the proposed scheme has reduced the congestion in line, thereby increasing the voltage stability along with improved loading capability for the congested lines. Practical implications The usefulness of the proposed scheme is justified with the computed results, giving convenience for implementation to any practical transmission network. Originality/value This paper fulfills an identified need to study exaction of congestion management of the power line.

Investigation of Modified Generalized Interline Power Flow Controller (GIPFC) and Performance Analysis

2014 ◽  
Vol 622 ◽  
pp. 111-120
Author(s):  
Ananthavel Saraswathi ◽  
S. Sutha
Keyword(s):  
Power System ◽  
Power Flow ◽  
Test System ◽  
Transmission System ◽  
System Stability ◽  
Flexible Ac Transmission ◽  
Flexible Ac Transmission System ◽  
Flow Controller ◽  
Ac Transmission ◽  
Power Flow Controller

Nowadays in the restructured scenario, the main challenging objective of the modern power system is to avoid blackouts and provide uninterrupted quality power supply with dynamic response during emergency to improve power system security and stability. In this sense the convertible static compensator (CSC) that is the Generalized Inter line power flow controller (GIPFC), can control and optimize power flow in multi-line transmission system instead of controlling single line like its forerunner FACTS (Flexible AC Transmission System) controller. By adding a STATCOM (Static synchronous Shunt Converter) at the front end of the test power system and connecting to the common DC link of the IPFC, it is possible to bring the power factor to higher level and harmonics to the lower level and this arrangement is popularly known as Generalized Inter line power flow controller (GIPFC). In this paper a new concept of GIPFC based on incorporating a voltage source converter with zero sequence injection SPWM technique is presented for reinforcement of system stability margin. A detailed circuit model of modified GIPFC is developed and its performance is validated for a standard test system. Simulation is done using MATLAB Simulink.Index Terms—Convertible static controller, Flexible AC Transmission System (FACTS), Generalized Interline Power Flow Controller (GIPFC),STATCOM, SSSC, Reactive power compensation.

scholarly journals Optimal Allocation of FACTS Devices by using multi-Objective Optimal Power Flow and Genetic Algorithms

2012 ◽  
pp. 218-224
Author(s):  
Aditya Tiwari ◽  
K.K. Swarnkar ◽  
Dr.S. Wadhwani ◽  
Dr.A.K. Wadhwani
Keyword(s):  
Power System ◽  
Power Flow ◽  
Optimal Power Flow ◽  
Optimal Allocation ◽  
Cost Effective ◽  
Transmission System ◽  
Flexible Ac Transmission ◽  
Flexible Ac Transmission System ◽  
Ac Transmission ◽  
The Cost

The introduction of the flexible AC transmission system (FACTS) in the power system reduces the losses, reduces the cost of the generation, improves the stability and also improves the load capability of the system. Some application of the Flexible AC transmission system (FACTS) technologies to existing high voltage power system has proves the use of FACTS technology may be a cost effective option for power delivery system enhancement. Amongst various power electronic devices unified power flow controller (UPFC) may be considered to be a capable of regulating the power flow and minimizing the power loss simultaneously. Since for the cost effective application of the FACTS technology a proper selection of the number and the placement of these devices is required. The main aim of this paper is to propose the methodology based on the genetic algorithm, able to identify the optimal number and the location of the UPFC devices in an assigned power system network for maximizing system capabilities. In order to validate the usefulness of the approach suggested here is , a case study using a IEEE 30-bus power system is presented and discussed.

The Application of the UPFC in Power System

2013 ◽  
Vol 457-458 ◽  
pp. 1371-1376
Author(s):  
Xin Hua Xiong ◽  
Zun Nan Min ◽  
Ting Jian Zhong
Keyword(s):  
Power System ◽  
Reactive Power ◽  
Transmission System ◽  
Characteristic Functions ◽  
Electricity Transmission ◽  
Flexible Ac Transmission ◽  
Flexible Ac Transmission System ◽  
The Stability ◽  
Ac Transmission ◽  
Compensation Function

UPFC is one of the flexible ac transmission system (FACTS) compensation devices, it has a comprehensive compensation function, UPFC has the characteristic functions as follows: fast anddynamical adjusting the parameters of electricity transmission system, such as voltage, impedance, phase angle, active power and reactive power, expanding thecapacity of electricity transmission, improving the stability of power system and optimizing the operation of power system.So it is a perfect fashion for active and reactive power controller, and also it has the function of regulating voltage.

An Advanced Technology for Enhancement of Transmission Loadability Using FACTS Devices

2013 ◽  
Vol 302 ◽  
pp. 502-508 ◽  
Author(s):  
Chao Ming Huang ◽  
Yann Chang Huang ◽  
Kun Yuan Huang
Keyword(s):  
Optimal Solution ◽  
Transmission System ◽  
Advanced Technology ◽  
Line System ◽  
Flexible Ac Transmission ◽  
Flexible Ac Transmission System ◽  
Facts Devices ◽  
Transfer Capability ◽  
Thyristor Controlled Series Capacitor ◽  
Ac Transmission

This paper proposes an advanced technology to enhance the transfer capability of transmission system using flexible AC transmission system (FACTS). FACTS consists of thyristor-controlled series capacitor (TCSC), thyristor-controlled phase shifting transformer (TCPST), thyristor-controlled voltage regulator (TCVR) and static var compensator (SVC). The location of FACTS and their associated values dominate the transfer capability of transmission system. To determine the optimal solution of FACTS, this paper presents an enhanced differential evolution (EDE) approach to deal with this type of optimization problem. In comparison with basic DE, EDE uses a variable scaling mutation to adaptively adjust the mutation operation and enhance the global search capability of basic DE. The proposed method is verified on an IEEE 30-bus 41-transmission line system. To verify the performance of the proposed method, the basic DE and particle swarm optimization (PSO) methods are also implemented using the same database. The results show that the proposed approach provides better transmission loadability with less execution time than the existing methods.

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