scholarly journals Appendix A: Jacobian Elements for FACTS Controllers in Positive Sequence Power Flow

FACTS ◽  
2005 ◽  
pp. 343-348
Keyword(s):  
Power Flow ◽  
Positive Sequence ◽  
Facts Controllers

Study of Shunt FACTS-Based Controllers Effectiveness on Multi Machine Power System Steady State Operation

2011 ◽  
Vol 403-408 ◽  
pp. 4926-4933
Author(s):  
Laxmidhar Sahu ◽  
Jose. P. Therattil ◽  
P. C. Panda
Keyword(s):  
Power System ◽  
Power Flow ◽  
Load Flow ◽  
Continuous Change ◽  
Flow Models ◽  
Flexible Ac Transmission ◽  
Steady State Operation ◽  
Facts Controllers ◽  
Ac Transmission ◽  
Matlab Programming

The continuous change in power demand and supply altered the power flow patterns in transmission networks in such a way that some of the corridors are lightly loaded and some of the corridors get over loaded. This raises serious challenge in operating the power system in secure and reliable manner. To cope with this problem Flexible AC Transmission Systems (FACTS) is used. It plays a very important role in improving the power system operating performance. In this paper load flow models for STATCOM and SVC have been developed. Power flow study of a five bus system is carried out with and without FACTS controllers. Results of the power flow studies are obtained with MATLAB programming.

Optimal Power Flow and Optimal Reactive Power Dispatch Incorporating TCSC-TCPS Devices Using Different Evolutionary Optimization Techniques

2018 ◽  
pp. 210-243
Keyword(s):  
Power System ◽  
Power Flow ◽  
Optimal Power Flow ◽  
Phase Shifter ◽  
Unified Power Flow Controller ◽  
Flexible Ac Transmission ◽  
Flexible Ac Transmission System ◽  
Thyristor Control ◽  
Facts Controllers ◽  
Evolutionary Optimization Techniques

The introduction of flexible AC transmission system (FACTS) has added a new dimension in power system operation and planning. Various types of FACTS controllers such as static compensator (STATCOM), static synchronous series compensator (SSSC), thyristor control series compensator (TCSC), thyristor control phase shifter (TCPS), unified power flow controller (UPFC), etc. are successfully used by various researchers in order to get optimal performance of power system. In this chapter, the various population-based nature-inspired techniques such as grey wolf optimization (GWO), teaching-learning-based optimization (TLBO), biogeography-based optimization (BBO), krill herd algorithm (KHA), chemical reaction optimization (CRO), and hybrid CRO (HCRO) are used to find the optimal size of TCSC and TCPS devices in order to find the optimum performance of IEEE 30-bus power system. The simulation results of various cases demonstrate the effectiveness and robustness of the proposed techniques to solve TCSC-TCPS-based OPF and ORPD problems.

scholarly journals Intelligent stability margin improvement using series and shunt controllers

2021 ◽  
Vol 10 (4) ◽  
pp. 281
Author(s):  
Mahdi Karami ◽  
Norman Mariun ◽  
Mohd Amran Mohd Radzi ◽  
Gohar Varamini
Keyword(s):  
Power Systems ◽  
Power System ◽  
Power Flow ◽  
Stability Margin ◽  
Alternate Current ◽  
Critical Issue ◽  
Number Representation ◽  
Facts Devices ◽  
Facts Controllers ◽  
The Stability

Electric market always prefers to use full capacity of existing power system to control the costs. Flexible alternate current transmission system (FACTS) devices introduced by Electric Power Research Institute (EPRI) to increase the usable capacity of power system. Placement of FACTS controllers in power system is a critical issue to reach their maximum advantages. This article focused on the application of FACTS devices to increase the stability of power system using artificial intelligence. Five types of series and shunt FACTS controllers are considered in this study. Continuation power flow (CPF) analysis used to calculate the collapse point of power systems. Controlling parameters of FACTS devices including their locations are determined using real number representation based genetic algorithm (RNRGA) in order to improve the secure margin of operating condition of power system. The 14 and 118 buses IEEE standard test systems are utilized to verify the recommended method. The achieved results manifestly proved the effectiveness of proposed intelligent method to increase the stability of power system by determining the optimum location and size of each type of FACTS devices.

Deployment of FACTS Controllers in Solving Power System Network Problems: A Review

2020 ◽  
Vol 51 ◽  
pp. 147-175
Author(s):  
Babatunde Olusegun Adewolu ◽  
Akshay Kumar Saha
Keyword(s):  
Power Flow ◽  
Economic Benefits ◽  
Stability Control ◽  
System Stability ◽  
Power Network ◽  
Network Systems ◽  
Control Power ◽  
Facts Controllers ◽  
Flexible Alternating Current Transmission ◽  
Vantage Points

Flexible alternating current transmission systems (FACTS) deployments and applications are on the increase in modern day power network systems because of their advantages over conventional ways of power network physical expansion. Therefore, a comprehensive review of FACTS controllers with their various applications is carried out in this paper. Formation of different applications and advantages of FACTS devices into voltage control, power flow control, system stability control, power quality control, and economic benefits as inferred from the literatures is among the vantage points of this presentation. FACTS background alongside different techniques of deployments, leading to various applications and performance of these devices, hitherto organized structurally based on target objectives are also explored, presented and discussed. Summarily, this study provides an overview of the background, topological structures, deployment techniques and cutting-edge utilization of FACTS controllers, with a view to acquainting power players, electrical engineers, network designers as well as researchers, with the trends in the development, status and future direction of FACTS applications. Convincingly, the content of this article will benefit all the stakeholders in the area of FACTS deployments and utilizations.

Modelling of TCSC Controller for Transient Stability Enhancement

2006 ◽  
Vol 7 (1) ◽  
Author(s):  
Ramnarayan Patel ◽  
Vasundhara Mahajan ◽  
Vinay Pant
Keyword(s):  
Power System ◽  
Power Flow ◽  
Transient Stability ◽  
Electrical Power ◽  
Fast Response ◽  
Transmission System ◽  
System Stability ◽  
Electrical Power System ◽  
Facts Controllers ◽  
Ac Transmission

Power engineers are currently facing challenges to increase the power transfer capabilities of existing transmission system. Flexible AC Transmission system (FACTS) controllers can balance the power flow and thereby use the existing power system network most efficiently. Because of their fast response, FACTS controllers can also improve the stability of an electrical power system by helping critically disturbed generators to give away the excess energy gained through the acceleration during fault. Thyristor controlled series compensator (TCSC) is an important device in FACTS family, and is widely recognized as an effective and economical means to solve the power system stability problem. TCSC is used as series compensator in transmission system. In the present work a TCSC controller is designed and tested over a single machine infinite bus (SMIB) as well as a multi-machine power system. Detailed simulation studies are carried out with MATLAB/SIMULINK environment and the effect of the TCSC parameter variations over the system stability is studied.

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