scholarly journals Hybrid control strategies of SVC for reactive power compensation

2020 ◽  
Vol 19 (2) ◽  
pp. 563
Author(s):  
Mothanna Sh. Aziz ◽  
Ahmed G. Abdullah
Keyword(s):  
Reactive Power ◽  
Hybrid Control ◽  
Control Strategies ◽  
Hybrid Genetic Algorithm ◽  
Static Var Compensator ◽  
Flexible Ac Transmission ◽  
Flexible Ac Transmission System ◽  
Dynamic Voltage ◽  
Bus Voltage ◽  
Ac Transmission

<span>This article shows a prospective utilizations of flexible AC transmission system (FACTS) controls, like the static VAR compensator (SVC). One of the major motives for setting up an SVC is to recover dynamic voltage controller and thus increase system load aptitude. Static VAR compensator system proposed in this work consists of thyristor switched capacitor and thyristor controlled reactor sets, this style of SVC modelled using MATLAB simulink toolbox. A hybrid genetic algorithm with PI and fuzzy logic controls that used to control and expand the grid performance of the power system. The model results reveal that the Static Var Compensation contribute a decent result in upholding bus voltage after the power network is in an active and steady moment, besides it has a capability of the constancy control. It can totally work as a significant plan of reactive power recompense in power networks. </span>

scholarly journals Pareto-based allocations of multi-type flexible AC transmission system devices for optimal reactive power dispatch using Kinetic Gas Molecule Optimization algorithm

2020 ◽  
Vol 53 (1-2) ◽  
pp. 239-249 ◽  
Author(s):  
Pradeep Panthagani ◽  
R Srinivasa Rao
Keyword(s):  
Optimization Algorithm ◽  
Reactive Power ◽  
Transmission System ◽  
Flexible Ac Transmission ◽  
Flexible Ac Transmission System ◽  
Optimal Reactive Power Dispatch ◽  
Power Dispatch ◽  
Gas Molecule ◽  
Reactive Power Dispatch ◽  
Ac Transmission

Optimal reactive power dispatch is one of the key factors to attain cost-effective and stable functioning of power system. It is a complicated non-linear optimization issue with a combination of discrete and continuous control variables. Due to this complex feature of optimal reactive power dispatch, optimization technique has become an efficient method to solve this problem. In this work, Kinetic Gas Molecule Optimization algorithm with Pareto optimality is proposed for solving multi-objective optimal reactive power dispatch problem. The presentation of Kinetic Gas Molecule Optimization is improved by computing inertia weight and acceleration coefficients dynamically rather than a fixed value. Because of this reason, the searching capability of the particles in each iteration is improved. However, to improve the power system performance in optimal reactive power dispatch scenario, additional flexible AC transmission system devices like static VAR compensator, thyristor-controlled series compensator, and unified power flow controller are introduced to provide stable results when compared to conventional output because flexible AC transmission system devices are capable of controlling the flow of real power and reactive power. These details are implemented and tested on IEEE 30-bus test system with various objectives. The performance of proposed method is validated from MATLAB, which shows the value of power loss as 4.3583 and voltage deviation as 0.26499 with cost of US$469.6417 per MVAR, which shows considerably superior results when compared with implemented particle swarm optimization results. The proposed method provides an efficient result for solving multi-objective optimal reactive power dispatch issues.

FACTS Devices Loss Consideration in Placement Approach for Available Transfer Capability Enhancement

2020 ◽  
Vol 49 ◽  
pp. 104-129 ◽  
Author(s):  
Babatunde Olusegun Adewolu ◽  
Akshay Kumar Saha
Keyword(s):  
Active Power ◽  
Loss Reduction ◽  
Available Transfer Capability ◽  
Sensitivity Equation ◽  
Flexible Ac Transmission ◽  
Flexible Ac Transmission System ◽  
Power Loss Reduction ◽  
Transfer Capability ◽  
Bus Voltage ◽  
Ac Transmission

This paper incorporates Flexible AC Transmission System (FACTS) device loss with the general loss sensitivity equation for the determination of optimum location for its placement in deregulated power networks, with objectives of Available Transfer Capability (ATC) enhancement, bus voltage improvement and loss reduction. A detailed mathematical model in terms of circuit system parameters is presented based on FACTS loss amalgamation approach. Thyristor Controlled Series Capacitor (TCSC) FACTS device is considered for simulation and analysis because of its capability to control active power among other parameters. The TCSC location is established based on analysis of sensitivity factors obtained from partial derivatives of the resultant loss equations (including FACTS) with respect to control parameters. ATC values are obtained using ACPRDF method and with TCSC in place, these values are enhanced for different bilateral and multilateral power transactions. IEEE 5 Bus system is used for the demonstration of the effectiveness of this approach. Placement with this method resulted into ATC enhancement of more than 60% well above the values obtained when TCSC was placed with thermal limit method. In addition, a substantial bus voltage improvement of up to 3% deviation minimization as well as up to 10% active power loss reduction was recorded with this placement.

scholarly journals Modelling of Transformerless Upfc Toimprovepower System Stability using Optimization Technique

2019 ◽  
Vol 8 (4) ◽  
pp. 11456-11459
Keyword(s):  
Power Flow ◽  
Reactive Power ◽  
Optimization Technique ◽  
System Stability ◽  
Unified Power Flow Controller ◽  
Flexible Ac Transmission ◽  
Flexible Ac Transmission System ◽  
Facts Devices ◽  
Ac Transmission ◽  
Power Flow Controller

Generally, power system faces the problem to transfer power from one system to another system without any fluctuations, with minimal of system losses. To overcome this problems, a flexible ac transmission system is implemented in this paper. In present scenario, facts devices are used to reduce the transmission losses for improvising transmission capacity and also to improve the system capability. Unified Power Flow Controller plays a most prominent role in FACTS controller to improve the system stability. The structure of UPFC is combination of back-back converters with boosting and zigzag transformer. This type of UPFC system consists of high losses due to presence of magnetic properties in this transformer. With this, a transformer-less multilevel inverter based UPFC topology is proposed in this paper. This paper focuses on the modulation of transformerless UPFC with PSO, which controlsfundamental frequency for better controlling of active and reactive power, harmonic minimization, and improvement in efficiency of system by controlling DC link voltage

Power Quality Enhancement Using the Interline Power Flow Controller

2015 ◽  
Vol 6 (3) ◽  
pp. 415 ◽  
Author(s):  
Ben Slimane Abdelkader ◽  
Chelleli Benachiba
Keyword(s):  
Transmission Lines ◽  
Power Flow ◽  
Reactive Power ◽  
Flexible Ac Transmission ◽  
Flexible Ac Transmission System ◽  
Reactive Power Flow ◽  
Flow Controller ◽  
Ac Transmission ◽  
The Impact ◽  
Power Flow Controller

Interline Power Flow Controller (IPFC) is one of the latest generation Flexible AC Transmission system (FACTS). It is able to control simultaneously the power flow of multiple transmission lines. This paper presents a study of the impact the IPFC on profile of voltage, real and reactive power flow in transmission line in power system. The obtained results are interesting.

A Voltage Improvement of Transmission System using Static Var Compensator via Matlab/Simulink

2017 ◽  
Vol 6 (2) ◽  
pp. 330 ◽  
Author(s):  
Siti Amely Jumaat ◽  
Ismail Musirin ◽  
Mazliya Mohd Baharun
Keyword(s):  
Power Transmission ◽  
Electricity Consumption ◽  
Modern Society ◽  
Transmission System ◽  
Static Var Compensator ◽  
High Demand ◽  
Matlab Simulink ◽  
Flexible Ac Transmission ◽  
Flexible Ac Transmission System ◽  
Ac Transmission

<p class="IJASEITAbtract">High demand in electricity consumption is rising and modern society would case to function without access to electricity. The volume of power transmitted and distributed are increasing, these need the requirements for high quality and reliable supply. At the same time, rising the costs and the growing environmental concerns make the process of develop a new power transmission line make complicated and the time consuming. One of alternatives to solve the issues is installed the Flexible AC Transmission System (FACTS). This research presents to modeling and simulation of Static Var Compensator (SVC) in the power system network using Matlab/Simulink Software. The objective function of this research is improvement the voltage of the system with four cases study for validation. From the simulation results shown that the SVC installation gives the effect to voltage of system.</p>

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.

scholarly journals Performance Analysis of IEC 61850 Messages in LTE Communication for Reactive Power Management in Microgrids

Energies ◽  
2020 ◽  
Vol 13 (22) ◽  
pp. 6011
Author(s):  
S. M. Suhail Hussain ◽  
Mohd Asim Aftab ◽  
Taha Selim Ustun
Keyword(s):  
Power Management ◽  
Reactive Power ◽  
Renewable Energy Sources ◽  
Large Area ◽  
Iec 61850 ◽  
Flexible Ac Transmission ◽  
High Data ◽  
Flexible Ac Transmission System ◽  
Wide Range ◽  
Ac Transmission

Reactive power management in microgrids with high penetration of distributed renewable energy sources (DRESs) is challenging. The intermittent generation of DRES makes the power management cumbersome. Generally, Flexible AC Transmission System (FACTS) devices such as Distribution Static Compensator (DSTATCOM) are employed for reactive power compensation in microgrids. However, for effective results in microgrids, coordinated operation between DSTATCOM and Distributed Energy Resources (DERs) is required. In this paper, IEC 61850 communication is proposed for realizing coordinated operation between microgrid controller (MGCC), DSTATCOM and DERs. In microgrids, there may be large number of DERs dispersed over a large area. Hence, the underlying communication network technology for IEC 61850 communication must be highly scalable with wide range. Recently developed communication technology Long Term Evolution (LTE) is a promising solution since it offers high data rates, reliability, scalability and longer range. In this paper, the developed IEC 61850 based reactive power management system is tested with the LTE technology and the performance evaluation tests have been performed. Firstly, IEC 61850 messages have been mapped on LTE stack to enable their transmission. Then, simulations over a network emulator have been performed to evaluate the performance of IEC 61850 communication message exchanges over LTE network in terms of End to End (ETE) delays.

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