scholarly journals STATCOM controllers based on fuzzy PI approach

2020 ◽  
Vol 18 (3) ◽  
pp. 1138
Author(s):  
Tamer Shehata ◽  
Mohamed S Abdul moteleb ◽  
Essam Mohamed Abou El-Zahab
Keyword(s):  
Power System ◽  
Electricity Consumption ◽  
Static Synchronous Compensator ◽  
Flexible Ac Transmission ◽  
Controlling System ◽  
Wide Range ◽  
Facts Controllers ◽  
The Stability ◽  
Ac Transmission ◽  
Transient And Steady State

<span>The electricity companies enforced some legislation on the electricity consumption contracts because the electricity network cannot bear the increasing demands of consumers. Therefore, a new controlling system is required to improve the frequent variations of the power system operating point (OP). Consequently, the flexible AC transmission systems (FACTS) controllers should be able to integrate with recent OP. Coordination of FACTS controller is more sophisticated due to various OP and uncertainties parametric in cooperation with the non linearity of power system (PS). Static Synchronous Compensator (STATCOM) plays very important role like the stability support of large and small transient-disturbance in PS. Therefore, the aim of this research is presents fuzzy logic (FL) with the PI controller (a novel controller) its ability to improve the performance of the power system along with the capability of switch irregular and rough actual world data. This new controlling system may be suitable for a wide range of applications especially the models which deal with huge and complicated data analysis. This new controller system carries out the adjustments of the voltage on DC capacitor under transient and steady-state conditions.</span>

scholarly journals Selection the optimum place of FACTS devices using fuzzy control system

2020 ◽  
Vol 11 (4) ◽  
pp. 1805
Author(s):  
Jawad Hameed ◽  
Hameed Ali Mohammed ◽  
Amer T. Saeed
Keyword(s):  
Power System ◽  
Reactive Power ◽  
Flow Index ◽  
Voltage Profile ◽  
Flexible Ac Transmission ◽  
Optimum Placement ◽  
Facts Controllers ◽  
Remedial Actions ◽  
The Stability ◽  
Ac Transmission

In this paper, the voltage stability of the power system is studied during fault conditions. Enhancement of the system’s stability will be achieved by utilizing Flexible AC transmission systems (FACTS) controllers at the best place in the system. The optimum placement of (FACTS) controllers occurred on the most affected bus by the fault in the system (weakest bus). Two approaches have been used in this study to effectively obtain the best location of the (FACTS) controllers in the system. The first method is based on computing the deviation which occurs in the active power and reactive power due to the fault at each load bus at a time. Whereas the second method is performed through exploiting a MATLAB fuzzy set technique utilizing two indices: Line Flow Index (LFI) and Voltage Profile Index (VPI) during fault and steady-state conditions. The results show that both of these indices resulted in the same bus as the best location. Remedial actions in the attempt at improving in the stability of the power system are discussed taking the advantage of using (FACTS) compensation (SVC) and (STATCOM) at the most vulnerable system buses. In this work, MATLAB program with an IEEE 24 bus system is examined.

Genetic Algorithm and Fuzzy Logic Based Optimal Location of Facts Device in a Power System Network

2006 ◽  
Vol 5 (2) ◽  
Author(s):  
Baskaran Jeevarathinam
Keyword(s):  
Genetic Algorithm ◽  
Fuzzy Logic ◽  
Power System ◽  
Optimization Technique ◽  
Flexible Ac Transmission ◽  
Flexible Ac Transmission System ◽  
Facts Controllers ◽  
The Stability ◽  
Ac Transmission ◽  
The Cost

The flexible AC transmission system (FACTS) in a power system improves the stability, reduces the losses, reduces the cost of generation and also improves the loadability of the system. In the proposed work, a non-traditional optimization technique, a Genetic Algorithm (GA) is conjunction with Fuzzy logic (FL) is used to optimize the various process parameters involved in introduction of FACTS devices in a power system. The various parameters taken into consideration were the location of the device, their type, and their rated value of the devices. The simulation was performed on a 30-bus power system with various types of FACTS controllers, modeled for steady state studies. The optimization results are compared to the solution given by another search method. This comparison confirms the efficiency of the proposed method which makes it promising to solve combinorial problem of FACTS device location in a power system network.

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.

scholarly journals Enhancement of Power System Transient Stability By Fractional Order Controlled STATCOM Tuned By PSO

2018 ◽  
Vol 7 (4.24) ◽  
pp. 163
Author(s):  
R.S. Srinivas ◽  
P.V.Ramana Rao
Keyword(s):  
Power System ◽  
Fractional Order ◽  
Transient Stability ◽  
Stability Margin ◽  
Computational Effort ◽  
Static Synchronous Compensator ◽  
Facts Controllers ◽  
Angle Stability ◽  
Rotor Angle Stability ◽  
The Stability

This paper discusses the application of Fractional order PI controlled Static synchronous compensator for improvement rotor angle stability of inter connected power system. FACTS Controllers plays important role in enhancing the power system stability.Besides improving the stability margin of the power system it also aids the damping of inter area power oscillations. In the present work STATCOM is connected in multimachine power system .The dynamic response of the STATCOM is controlled by using fractional order controllers.The controller gains of the fractional controller are tuned by using PSO algorithm.It gives acceptable solutions to continuous non-linear systems with less computational effort. The performance of the proposed controller has been compared with integer order PI controllers at different locations of fault. In this paper a 3 machine 9 bus WSSC test power system is considered and simulated in MATLAB/SIMULINK.

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.

Review of STATCOM Effects on Relay Protection of Power System

2013 ◽  
Vol 811 ◽  
pp. 639-642
Author(s):  
Xue Song Zhou ◽  
Chun Ji ◽  
You Jie Ma
Keyword(s):  
Power System ◽  
Reactive Power ◽  
New Technology ◽  
Dynamic Performance ◽  
Reactive Power Compensation ◽  
It Use ◽  
Flexible Ac Transmission ◽  
Compensation Device ◽  
The Stability ◽  
Ac Transmission

Flexible AC transmission technology (FACTS) is a new technology developed in recent years. It use power electronic technology and modern control technology to achieve fast control for AC transmission system parameter and structure [, to achieve the rational allocation of transmission power, reduce the power loss and the cost of power generation, greatly improve the stability and reliability of the system. STATCOM is based on the principle of reactive power compensation, using full-controlled switching devices to compose self-commutated inventer, complemented by small-capacity storage elements constitute reactive power compensation device. Its role in the power system is the compensation of reactive power, maintain the voltage of the connection point, improve system voltage stability, and improve the steady performance and dynamic performance of the system.

scholarly journals Penggunaan UPFC (Unified Power Flow Controller) untuk Perbaikan Kestabilan Sistem Tenaga Listrik yang Terinterkoneksi

Electrician ◽  
2021 ◽  
Vol 15 (1) ◽  
pp. 25-32
Author(s):  
Rudy Gianto
Keyword(s):  
Power System ◽  
Power Flow ◽  
Electric Power System ◽  
Unified Power Flow Controller ◽  
Flexible Ac Transmission ◽  
Facts Devices ◽  
Flow Controller ◽  
The Stability ◽  
Ac Transmission ◽  
Power Flow Controller

Intisari — Makalah ini membahas penggunaan peralatan FACTS (Flexible AC Transmission Systems) untuk meningkatkan atau memperbaiki kestabilan sistem tenaga listrik yang terinterkoneksi. Peralatan FACTS pada umumnya digunakan untuk mengendalikan aliran daya-aktif dan/atau daya-reaktif serta untuk mengontrol besarnya tegangan sistem. Namun demikian, dengan memasang alat kontrol tambahan, peralatan FACTS dapat digunakan untuk meningkatkan redaman elektromekanik dan kestabilan sistem tenaga listrik sebagai fungsi sekundernya. Salah satu peralatan FACTS yang cukup populer saat ini adalah UPFC (Unified Power Flow Controller). UPFC merupakan peralatan FACTS generasi ketiga. Peralatan ini menggabungkan kompensator shunt dan kapasitor seri statik menjadi satu peralatan dengan sistem kendali terpadu. UPFC memiliki kemampuan unik untuk mengendalikan aliran daya listrik dan tegangan secara simultan sehingga memiliki potensi untuk digunakan dalam meningkatkan redaman dan kestabilan sistem. Makalah ini menyelidiki aplikasi dari UPFC pada peningkatan kestabilan sistem tenaga listrik yang terinterkoneksi. Keefektifan dari peralatan tersebut dalam memperbaiki penampilan dinamik dan meningkatkan kestabilan suatu sistem tenaga telah dikonfirmasi melalui hasil-hasil perhitungan nilaieigen dan divalidasi dengan menggunakan simulasi domain-waktu.Kata kunci — FACTS, UPFC, Redaman, Kestabilan, Sistem Tenaga Listrik Abstract — This paper discusses an application of FACTS (Flexible AC Transmission Systems) device in improving the stability of interconnected electric power system. FACTS devices are used primarily for controlling active- and/or reactive-power and also for voltage regulation. However, by employing some supplementary controllers, it can also be used for enhancing system electromechanical damping and stability as its secondary function. One of the most popular FACTS devices is UPFC (Unified Power Flow Controller). UPFC is a third generation of FACTS device. This device combines the shunt compensator and static series capacitor as one device with a unified control system. UPFC has a unique ability in controlling simultaneously system power flow and voltage, and therefore, has a potential to be used for system damping and stability improvement. This paper investigates an application of UPFC in improving the stability of interconnected power system. The effectiveness of the device in enhancing system dynamic performance and stability has been confirmed through eigenvalue calculations and validated using time-domain simulations.Keywords— FACTS, UPFC, Damping, Stability, Electric Power System

scholarly journals Power and energy system oscillation damping using multi-verse optimization

2021 ◽  
Vol 3 (3) ◽  
Author(s):  
Ramesh Devarapalli ◽  
Biplab Bhattacharyya
Keyword(s):  
Power System ◽  
Damping Ratio ◽  
Energy System ◽  
Test System ◽  
Static Synchronous Compensator ◽  
Flexible Ac Transmission ◽  
Flexible Ac Transmission System ◽  
System States ◽  
System Stabilizer ◽  
Ac Transmission

AbstractPower system oscillations are the primary threat to the stability of a modern power system which is interconnected and operates near to their transient and steady-state stability limits. Power system stabilizer (PSS) is the traditional controller to damp such oscillations, and flexible AC transmission system (FACTS) devices are advised for the improved damping performance. This paper suggests a technique for controller parameters tuning of PSS and a shunt connected FACTS device to be operated in coordination. A static synchronous compensator (STATCOM) connected in a two-machine system is considered as a test power system for the system studies. A recent meta-heuristic algorithm, Multi-Verse optimizer (MVO) has been suggested and compared with the other state-of-the-art algorithms. Improvement in system damping has been achieved by minimizing the oscillating nature of the system states by framing the objective function as a function of damping ratio and location of poles of the system. The Phillips-Heffron model of the test system has been designed by considering the system dynamics. The coordinated system behavior under the perturbation in system parameters has been observed satisfactory with the tuned controller parameters obtained from the suggested algorithm.

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