scholarly journals Review of enhanced power quality using unified power flow control system in electrical network

2021 ◽  
Vol 2089 (1) ◽  
pp. 012034
Author(s):  
Divya Shende ◽  
Prashant Jagtap ◽  
Rutuja Hiware
Keyword(s):  
Flow Control ◽  
Power Quality ◽  
Power Flow ◽  
Reactive Power ◽  
Electrical Network ◽  
Voltage Source ◽  
Power Flow Control ◽  
Power Adjustment ◽  
Facts Controllers ◽  
Ac Transmission

Abstract Flexible FACTS system of AC transmission. FACTS Devices can regulate electricity flow, develop the transmission capacity for power management. UPFC is a multipurpose fact controller carried on design of the constant voltage source. As an electrical device UPFC for rapid reactive power adjustment on high voltage electricity transport grid. Unified power flow control (UPFC). The latest FACTS gadget is UPFC. This combines series and shunting compensator characteristics and enables Power reactive and response to be controlled. UPFC utilization reduces difficulties in power quality including voltage sink and voltage surge. This article addresses UPFC and also several novel topologies for FACTS controllers.

Improved multifunctional controller for power quality enhancement in grid integrated solar photovoltaic systems

2020 ◽  
Vol 17 (4) ◽  
pp. 585-598
Author(s):  
Fossy Mary Chacko ◽  
Ginu Ann George ◽  
Jayan M.V. ◽  
Prince A.
Keyword(s):  
Flow Control ◽  
Power Quality ◽  
Control Strategy ◽  
Power Flow ◽  
Reactive Power ◽  
Control Algorithms ◽  
Quality Enhancement ◽  
Power Flow Control ◽  
Content Type ◽  
Reactive Power Flow

Purpose This paper aims to propose an improved multifunctional control strategy for achieving real, reactive power flow control and the mitigation of power quality issues in grid integrated photovoltaic (GIPV) systems. Design/methodology/approach The paper proposes a dual stage, three phase, multifunctional GIPV system with modified instantaneous reactive power (IRP) theory-based and modified synchronous reference frame (SRF) theory-based control algorithms for reference template generation with continuous load power requirement tracking. The control structure is designed so as to impart virtual distribution static compensator functionality to the photovoltaic inverter. The dual mode operation in active filter and renewable power injection modes provides enhanced capability to the GIPV system. A comprehensive evaluation of the dynamic behaviour of the GIPV system is carried out for various conditions of irradiance and load under MATLAB/Simulink platform. The performance comparison is done considering an uncompensated system and the GIPV system with both proposed control algorithms. Findings The extensive simulation results demonstrate that the proposed modified SRF theory-based multifunctional control strategy shows superior performance in real and reactive power flow control; reduction in real and reactive burden of the utility grid; and regulation of dc bus voltage under varying scenarios of irradiance and load. Furthermore, there is improvement of grid power factor and reduction in total harmonic distortion of grid currents in compliance with the IEEE 519 standard even with highly non-linear loads at the point of common coupling. Originality/value The proposed modified SRF theory-based multifunctional controller offers a viable solution for power quality enhancement as well as the realization of effective real and reactive power flow control in GIPV systems. Thus, the penetration level of distributed generation can be increased in this era of global energy crisis.

A Novel Technique of Power Flow Control in Transmission Lines Using Interline Power Flow Control

2016 ◽  
Vol 3 (2) ◽  
pp. 296
Author(s):  
Pankaj Aswal ◽  
Suyash Kumar Singh ◽  
Apurv Thakur ◽  
Kshitij Gaur
Keyword(s):  
Flow Control ◽  
Transmission Lines ◽  
Power Flow ◽  
Reactive Power ◽  
Transmission System ◽  
Power Flow Control ◽  
Flexible Ac Transmission System ◽  
Multiple Line ◽  
Reactive Power Flow ◽  
Ac Transmission

The interline power flow control (IPFC) is the flexible AC transmission system controller (FACTS) came into accountability to control the flow of power in multiple line transmission system. The following paper demonstrates the IPFC modelling using Matlab Simulink. Power flow calculations has been made using Gauss-Seidel Method. Optimization of power in terms of real and reactive power flow is achieved by comparing the actual calculated term and the predicted value.

Differentiation Coherence Algorithm for Steady Power Flow Control

2015 ◽  
Vol 9 (1) ◽  
pp. 107-116 ◽  
Author(s):  
Yang Liu-Lin ◽  
Hang Nai-Shan
Keyword(s):  
Flow Control ◽  
Extreme Point ◽  
Power Flow ◽  
Reactive Power ◽  
Small Deviation ◽  
Function Optimization ◽  
Flow Mode ◽  
Power Flow Control ◽  
Active And Reactive Power ◽  
Variable Inequality

This paper researched steady power flow control with variable inequality constraints. Since the inverse function of power flow equation is hard to obtain, differentiation coherence algorithm was proposed for variable inequality which is tightly constrained. By this method, tightly constrained variable inequality for variables adjustment relationships was analyzed. The variable constrained sensitivity which reflects variable coherence was obtained to archive accurate extreme equation for function optimization. The hybrid power flow mode of node power with branch power was structured. It also structured the minimum variable model correction equation with convergence and robot being same as conventional power flow. In fundamental analysis, the effect of extreme point was verified by small deviation from constrained extreme equation, and the constrained sensitivity was made for active and reactive power. It pointed out possible deviation by using simplified non-constrained sensitivity to deal with the optimization problem of active and reactive power. The control solutions for power flow for optimal control have been discussed as well. The examples of power flow control and voltage management have shown that the algorithm is simple and concentrated and shows the effect of differential coherence method for extreme point analysis.

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