Hybrid Power Flow Controller Research Articles

Retraction Note: Enhancement of voltage profile and generation of cost function by hybrid power flow controller using genetic algorithm

Retraction Note: Enhancement of voltage profile and generation of cost function by hybrid power flow controller using genetic algorithm

Comparative evaluation by two different hybrid power flow controller topologies of transient stability of machine system connected to wind-PV sources

The Hybrid Power Flow Controller (HPFC) has a simple design configuration, where the upgrading of the line functionality and controller can be performed in stages. This paper applies two HPFC configurations to a multi-machine power network. The first HPFC is a combination of two static synchronous series compensators (SSSC) connected in series, and a Static Var compensator (SVC). The second one consists of two shunt Static synchronous compensators (STATCOM) connected through a Thyristor controlled series compensator (TCSC), across a coupling transformer in a common DC link. The HPFC topologies are tested with a multi-machine power network with faults, in the presence of solar and wind energy sources. The overall model is simulated using SimPowerSystems toolbox and the performance of the two HPFC topologies is compared under various operating conditions. The comparison of simulation results shows that the second HPFC gives a better view than the first in analyzing the power system transient stability.

Hybrid power flow controller based micro-grid system for power quality enhancement with futuristic semiconductor materials

Hybrid power flow controller based micro-grid system for power quality enhancement with futuristic semiconductor materials

Model Predictive Controlled Four‐Bus System Employing Hybrid Power Flow Controller

A fuzzy logic‐ (FL‐) based control technique for unified power flow controller (UPFC) to resolve the power quality issues in transmission network is presented in this paper. MATLAB/Simulink is used to design the FL‐based controllers for shunt and series converters of UPFC, which is validated on 4‐bus system. In addition, the performance of the suggested FL‐based UPFC is compared with PI (proportional integral), HC (hysteresis controller), MPC (model predictive controller), and FLC (fuzzy logic controller), and the outcomes are compared in terms of settling time and steady‐state error. The consequences characterize that the higher enactment of closed loop hybrid power flow controller (HPFC) 4‐bus system with FLC UPFC controller’s (FL based) robustness is ensured from the simulation results as it has overcome the power quality issues like reactive power compensation, voltage sag mitigation, and THD reduction of transmission line current below 5% as per IEEE standard. Settling time of CL FBS is abridged from 0.87 to 0.62 sec, and steady‐state error of voltage in CL FBS is abridged from 0.9 to 0.1 V using FLC.

Enhancement of Power Quality in Four Bus System Using Hybrid Power Flow Controller

To mitigate the impacts of voltage sag, a hybrid power flow controller (HPFC) finds a spot between the sending and receiving terminals. This research work deals with the comparison of four bus systems employing UPFC and HPFC. Simulation is done for 4 bus system using UPFC and HPFC. The outcomes are associated with respect to the voltage, active power and Reactive power. The outcomes exemplifies the grander enactment of HPFC controlled 4 bus system compared to UPFC controlled 4 bus system.

Power Quality Improvement in Transmission line by Using Hybrid Power Flow Controller

The Electronic based FACTS controllers are static equipment. Its principle purpose is to control AC transmission. The parameters of FACTS are enhancement of controllability, ability of power transfer, control of line impedance, load angle and the magnitude of bus voltage. A unified power controller is to be a static device and this system device should have quick reactive transmission. This paper focuses on the issues like voltage sag and swell of power quality. HPFC is used to moderate the voltage variation and improve power quality and also used tocouple the phase controllable bridges to produce current which is injected into a transmission line by using series of transformers. The UPFC is a combination of a static synchronous compensator (STATCOM) and a static synchronous series compensator (SSSC)which is coupled with common DC link. The HPFC eliminates the common dc link between the shunt and series converters and alsoit performs in transmission line to exchange real power between converters at the 3 rd harmonic frequency. The HPFC employs. Several 1-phase converters like D-FACTS concepts as the seriescompensator .These concepts reduce the rating of the components and offer a high reliability. Since the HPFC can immediately control the active and reactive power flow and the voltage magnitude, it implies a great potential for power oscillation damping. The case study contains a HPFC located in an exceedingly single-machine infinite bus power grid with 2 parallel transmission lines that simulated in MATLAB/Simulink. Keywords— Power Quality, voltage Sag and voltage Swell, Unified Power Flow Controller, Hybrid Power Flow Controller.

Combining Multi-Band Power System Stabilizers and Hybrid Power Flow Controllers to Support Electricity Grids with High Penetration of Distributed Renewable Generation

The paper demonstrates the application of a new power flow configuration consisting of a Hybrid Power Flow Controller (HPFC) and a Multi-Band Power System Stabilizers (MB-PSS) to enhance the performance of a multi-machine power network in the presence of solar photovoltaic (PV) and wind energy sources. The HPFC is a new type of FACTS (Flexible AC Transmission Systems) device, which has been introduced to address inter-area congestion problems by controlling the real power flow and providing voltage regulation. The MB-PSS, on the other hand, is a power system stabilizer based on different frequency modes of electromechanical oscillations, where the discontinuities caused by the faults in the grid are taken in consideration, for multiple fault clearing times.The multi-machine power network with PV and wind distributed generation and the proposed power flow configuration are simulated using Matlab/ SimPowerSystems Toolbox and analyzed under three phase to ground short-circuits faults occurring in the middle of transmission line.

Merging slime mould with whale optimization algorithm for optimal allocation of hybrid power flow controller in power system

ABSTRACT This manuscript proposes the optimal allocation of hybrid power flow controller (HPFC) using hybrid technique. The proposed technique is the implementation of Integrated Slime Mould Algorithm (ISMA). The searching behaviour of Slime Mould Algorithm (SMA) is enhanced by the position updating behaviour of the whale optimisation algorithm (WOA). HPFC, a hybrid topology, has VAR compensator or an impedance-type FACTS device, most probably obtainable at power system, and two voltage source converters depend on controllers share a general DC link. The novel contributions of allocating HPFC at optimal location for multi-objective fitness functions denote minimal real power loss of system as well as minimal generation cost using ISMA method. Here, ISMA method optimises maximum line of power loss as appropriate location of unified power flow controller (UPFC). The optimal location parameters and dynamic stability restrictions are restored with normal constraints, employing UPFC optimal capacity has been optimised to decreased cost with the help of ISMA technique.

RETRACTED ARTICLE: Enhancement of voltage profile and generation of cost function by hybrid power flow controller using genetic algorithm

RETRACTED ARTICLE: Enhancement of voltage profile and generation of cost function by hybrid power flow controller using genetic algorithm

A novel MDA2LO technique for load flow analysis with hybrid power flow controller

A novel MDA2LO technique for load flow analysis with hybrid power flow controller

Fuzzy Logic Controlled Four Bus Micro-grid system employing Hybrid Power Flow Controller

Fuzzy Logic Controlled Four Bus Micro-grid system employing Hybrid Power Flow Controller

Research on placement of custom power devices to considered in Power Systems to Improve Power Quality of Four Bus System Using Hybrid Power Flow Controller

Research on placement of custom power devices to considered in Power Systems to Improve Power Quality of Four Bus System Using Hybrid Power Flow Controller

Contribution to the Optimization of the Transient Stability of an Electric Power Transmission Network Using a Universal Power Flow Compensator Controlled by a Three-Stage Inverter

The use of an electrical network as close as possible to its limits can lead to its instability in the event of a high amplitude disturbance. The damping of system oscillations can be achieved by conventional means of voltage and speed regulation but also by FACTS (Flexible AC Transmission Systems) devices, which are increasingly used in power networks. In this work, optimal control coordination between a hybrid power flow controller and a three-level inverter was used to improve the transient stability of a transmission line. The UPFC is a combination of a serial compensator (SSSC) and a parallel compensator (STATCOM) both connected to a DC-LINK DC bus. The SSSC acts as a voltage source for the network and injects a voltage that can be adjusted in phase and amplitude in addition to the network voltage; the STATCOM acts as a current source. The approach used is tested in the Matlab Simulink environment on a single machine network. Optimal controller tuning gives a better transient stability improvement by reducing the transport angle oscillations from 248.17% to 9.85%.

Controlling of Reactive Power in Transmission Line using Facts Technology with Closed Loop Controller

The paper proposes the power flow control in the transmission line using FACTS devices. In the existing system the power flow in the line system is controlled by using STATCOM. In the proposed system we are going to implement the Combined FACTS device. Which is a combination of series and shunt controller like HPFC (Hybrid power flow controller). Comparison of open loop and closed loop are analyzed for fourteen bus system. In the closed loop PI and FOPID are analyzed for both FACTS Devices. The simulation of both open loop and closed loop are done in the Matlab software.

Modeling and Application of Hybrid Power Flow Controller in Distribution Systems

The smartening of distribution systems with distributed generation, storage devices, and intelligent loads have created challenges for the operation of distribution feeders, which can be addressed with power-electronics based controllers. However, the capital-intensive nature of these controllers is an obstacle for their wide use. The Hybrid Power Flow Controller (HPFC) is shown here to provide an adequate solution to the application of flexible ac transmission systems controllers to distribution systems, and hence the merits and the added value of this controller are discussed here through detailed modeling and simulations, examining its impact on a distribution system under different conditions. Thus, in this paper, a detailed dynamic model of the HPFC is developed and implemented in PSCAD, describing and proposing control strategies to properly operate this controller in distribution-system applications, such as an effective and simple procedure for starting up the device. The developed model is used to demonstrate the effectiveness of the controller for solving problems in distribution systems, such as voltage sags associated with feeder faults and power flow fluctuations due to intermittent renewable generation using a benchmark network as an illustrative example.

A Decentralized Multiloop Scheme for Robust Control of a Power Flow Controller With Two Shunt Modular Multilevel Converters

This paper investigates the robust multiloop control for power flow controller in power transmission grids. A hybrid power flow controller (HPFC) is proposed, which comprises two shunt modular-multilevel-converter (MMC) based voltage source converters and one series capacitor. A nonlinear multiloop controller is designed via control Lyapunov function to achieve fast tracking performance, and robustness against system uncertainties and disturbances. Stability of the closed-loop nonlinear HPFC system is proved using Lyapunov stability theorem. The proposed finite-time controller (FTC) is decentralized using adaptive observer to estimate the nonlocal system parameters, in case of communication failure. Simulation and experimental studies are used to validate the proposed FTC with detailed model of MMCs, and the interarea oscillation damping with Phasor model of HPFC. Comparisons of the proposed FTC and the conventional PI controller show that the FTC has fast control response, small transient overshoot, and improved robustness.

Locating Hybrid Power Flow Controller in a 30-Bus System Using Chaotic Evolutionary Algorithm to Improve Power System Stability

Locating Hybrid Power Flow Controller in a 30-Bus System Using Chaotic Evolutionary Algorithm to Improve Power System Stability

Controlling Power Oscillations in Real and Reactive Power Using Symmetrical Hybrid PFC (Power Flow Controller)

Controlling Power Oscillations in Real and Reactive Power Using Symmetrical Hybrid PFC (Power Flow Controller)

Hybrid Power Flow Controller Steady-state Modeling, Control, and Practical Application

Steady-state models of the hybrid power flow controller (HPFC) for power flow and optimal power flow (OPF) studies are presented in this paper, considering the multiple control modes of the device. A strategy for control mode switching and limit handling in power flow calculations is proposed. The OPF model of the HPFC represents all the device control and physical limits as constraints in the mathematical formulation, so that the HPFC can be optimally dispatched as a part of the transmission system control assets. The power flow model is demonstrated and validated through loadability studies on a two-area benchmark test system, where the OPF model is used to determine the optimal ratings of the device based on a cost-benefit analysis. A study is also presented of the HPFC application to Ontario-Canada's grid, to address particular congestion problems in this network; an HPFC cost analysis is also shown for this system. The presented studies demonstrate the application of the proposed models for planning and operation studies, illustrating the performance, effectiveness, and feasibility of the controller to solve congestion issues in a real grid.

Modeling and Simulation of Hybrid Power Flow Controller for Improving the Performance of Power System

Modeling and Simulation of Hybrid Power Flow Controller for Improving the Performance of Power System