scholarly journals Design Simulation of Improved Power Quality Conditioner System for Enhancement of Power Quality

2021 ◽  
Vol 9 (12) ◽  
pp. 19-26
Author(s):  
Sunny Yadav ◽  
Sabir Ali ◽  
Amit Arora
Keyword(s):  
Power Quality ◽  
Power Factor ◽  
Electronic Devices ◽  
Active Power ◽  
Load Factor ◽  
Control Voltage ◽  
Power Conditioning ◽  
Power Quality Conditioner ◽  
Ac Transmission ◽  
Quality Controller

The increased usage of power-sensitive electronic devices has prompted interest in power conditioning solutions, which is no surprise. As a result, some type of compensation must be supplied if power output remains below the standards' prescribed limitations. The UPQC (Unified Power Quality Controller) is one of numerous AC Transmission System families that can control voltage, impedance, and phase angle among other factors (FACTS). This study focuses on modern UPFC systems that have increased power quality efficiency to help utilities reduce voltage concerns. One of the FACTS controls for lowering stress sales effects is a unified power quality conditioner (UPQC). The quadrature voltage is specified using the UPQC series compensator. As a result, the compensator series never utilizes active power in a continuous scenario. As mentioned in the approach, a low power rating compensator injects voltage to remedy the system's power quality problem. The voltage is decreased and the power factor is raised when the fluid logic controller is used in conjunction with traditional UPQC. Furthermore, the load factor has been improved. The circuit is then imitated in MATLAB / SIMULINK using a fluctuating logo controller.

Power Factor Control for Hybrid Type Power Quality Conditioner

2012 ◽  
Vol 2 (4) ◽  
pp. 430-436
Author(s):  
Kyohei Yamagiwa ◽  
Yuta Kobayashi ◽  
Mutsumi Aoki ◽  
Hiroyuki Ukai ◽  
Fukashi Ueda ◽  
...  
Keyword(s):  
Power Quality ◽  
Power Factor ◽  
Hybrid Type ◽  
Power Quality Conditioner ◽  
Type Power ◽  
Power Factor Control

scholarly journals UPQC Based Power Quality Improvement

2020 ◽  
Author(s):  
iftikhar manzoor
Keyword(s):  
Quality Improvement ◽  
Power Quality ◽  
Power Factor ◽  
Power Factor Correction ◽  
Voltage Sag ◽  
Power Quality Improvement ◽  
Voltage Swell ◽  
Power Quality Conditioner

UPQC Based power quality conditioner covers all power quality problems. Problems covers by UPQC are Voltage Sag, Voltage Swell, voltage imbalance, Power factor correction, harmonics mitigation.

scholarly journals Unit vector template generator applied to a new control algorithm for an UPQC with instantaneous power tensor formulation, a simulation case study

2020 ◽  
Vol 10 (4) ◽  
pp. 3889
Author(s):  
Yeison Alberto Garcés Gómez ◽  
Nicolás Toro García ◽  
Fredy Edimer Hoyos
Keyword(s):  
Power Quality ◽  
Active Power Filter ◽  
Unit Vector ◽  
Active Power ◽  
Voltage Reference ◽  
Shunt Active Power Filter ◽  
Power Filter ◽  
Instantaneous Power ◽  
Tensor Formulation ◽  
Power Quality Conditioner

<span>In this paper we present a new algorithm to generate the reference signals to control the series and parallel power inverters in an unified power quality conditioner “UPQC” to enhance power quality. The algorithm is based in the instantaneous power tensor formulation which it is obtained by the dyadic product between the instantaneous vectors of voltage and current in n-phase systems. The perfect harmonic cancelation algorithm “PHC” to estimate the current reference in a shunt active power filter was modified to make it hardy to voltage sags through unit vector template generation “UVGT” while from the same algorithm it extracts the voltage reference for series active power filter. The model was validated by mean of simulations in Matlab-Simulink®.</span>

Unified Power Quality Conditioner Using Injection Capacitors for Voltage Sag Compensation

2017 ◽  
Vol 6 (1) ◽  
pp. 36
Author(s):  
Madhusmita Patro ◽  
Kanhu Charan Bhuyan
Keyword(s):  
Power Systems ◽  
Power Quality ◽  
Power Factor ◽  
Supply Voltage ◽  
Voltage Source ◽  
Distortion Compensation ◽  
Unified Power Quality Conditioner ◽  
Three Phase ◽  
In Series ◽  
Power Quality Conditioner

<p>Power quality has become an important factor in power systems, for consumer and household appliances. The main causes of poor power quality are harmonic currents, poor power factor, supply voltage variations etc. A technique of achieving both active current distortion compensation, power factor correction and also mitigating the supply voltage variations at load side is compensated by unique device UPQC presented in this thesis. This concept presents a multi loop based controller to compensate power quality problems through a three phase four wire unified power quality conditioner (UPQC) under unbalanced and distorted load conditions. Here the UPQC is constituted of two voltage source converters (VSC) connected via power link. The series compensator is connected to the line in series and injects the voltage and thus compensates for voltage issues; whereas the shunt compensator injects current thus compensating for current issues, and is connected in shunt to the line. The voltage injection to the line uses an injecting transformer. The injection transformer is later replaced with injection capacitors, thus eliminating the drawback of conventional UPQC. In this way a good power quality is maintained.</p>

Unified Power Quality Conditioner Using Injection Capacitors for Voltage Sag Compensation

2017 ◽  
Vol 6 (1) ◽  
pp. 35
Author(s):  
Madhusmita Patro ◽  
Kanhu Charan Bhuyan
Keyword(s):  
Power Systems ◽  
Power Quality ◽  
Power Factor ◽  
Supply Voltage ◽  
Voltage Source ◽  
Distortion Compensation ◽  
Unified Power Quality Conditioner ◽  
Three Phase ◽  
In Series ◽  
Power Quality Conditioner

<p>Power quality has become an important factor in power systems, for consumer and household appliances. The main causes of poor power quality are har ue of achieving active current distortion compensation, power factor monic currents, poor power factor, supply voltage variations etc. A techniq correction and also mitigating the supply voltage variations at load side is compensated by unique device UPQC presented in this thesis. This concept presents a multi loop based controller to compensate power quality problems through a three phase four wire Unified Power Quality Conditioner (UPQC) under unbalanced and distorted load conditions. Here the UPQC is constituted of two Voltage Source Converters (VSC) connected via power link. The series compensator is connected to the line in series and injects the voltage and thus compensates for voltage issues; whereas the shunt compensator injects current thus compensating for current issues, and is connected in shunt to the line. The voltage injection to the line uses an ijecting transformer. The injection transformer is later replaced with injection capacitors, thus eliminating the drawback of conventional UPQC. In this way a good power quality is maintained</p>

Photovoltaic System Based Series Active Power Filter to Enhance Power Quality through Electrical Network

2017 ◽  
Vol 30 ◽  
pp. 100-109 ◽  
Author(s):  
Brahim Berbaoui
Keyword(s):  
Power Quality ◽  
Power Factor ◽  
Active Power Filter ◽  
Active Power ◽  
Distortion Correction ◽  
Photovoltaic System ◽  
Electrical Network ◽  
Photovoltaic Array ◽  
Voltage Distortion ◽  
Power Filter

This paper presents a study of proposed approach founded on series active power filter based on photovoltaic array (PV-SAPF) which is controlled by classical PI using pulse width modulation inverter (PWM). The proposed system is connected to grid system to feed linear and nonlinear loads to handle deep sags, swells voltage, voltage distortion and power factor crushing caused by any electrical perturbation. In the other hand, the excess of the energy is injected into the mains when the network is not affected and after compensation. To prove the effectiveness of the planned system, the PV-SAPF is carried out using MATLAB / Simulink environment. The results Simulations results proved the ability and the efficiency of the proposed system in mitigation the harmonic voltage distortion, correction the voltage sag and swell, power factor improvment and power quality enhancement.

scholarly journals Solar PV Sustained Quasi Z-Source Network-Based Unified Power Quality Conditioner for Enhancement of Power Quality

Energies ◽  
2020 ◽  
Vol 13 (10) ◽  
pp. 2657 ◽  
Author(s):  
K. Muthuvel ◽  
M. Vijayakumar
Keyword(s):  
Power Quality ◽  
Power Distribution ◽  
Power Efficiency ◽  
Harmonic Distortion ◽  
Active Power ◽  
Solar Pv ◽  
Storage Unit ◽  
Energy Storage Unit ◽  
Unified Power Quality Conditioner ◽  
Power Quality Conditioner

In this article, a Quasi Z-source inverter (QZSI)-based unified power quality conditioner (UPQC) backed by the solar photovoltaic (SPV) is presented in order to enhance power quality. The UPQC consists of converters connected in parallel and series. The active power filters (APFs) connected in parallel and series is one of the versatile custom power circuitries to reduce current and voltage instabilities. The main functions of QZSI can increase the variable direct current (DC) voltage to any given alternating current (AC) output voltage, reduce the necessary elements, and alleviate harmonic content. The UPQC’s compensation function primarily relies on the control system used for the generation of reference current and voltage. The enhanced second order generalized integrator (ESOGI) is used in this proposed system to extract the reference current of QZSI-UPQC. The proposed UPQC uses the SPV system, which has an energy storage unit to offset long-term current and voltage disruptions and fulfill the active power demands of the grid. The experimental results confirm that the proposed SPV-supported QZSI-UPQC generates sinusoidal grid currents of about 1.2% of total harmonic distortion (THD), thus increasing the power efficiency of the interconnected SPV power distribution network.

Dual-loop generalized predictive control method for two-phase three-wire railway active power quality controller

2020 ◽  
pp. 014233122093247 ◽  
Author(s):  
Hamed Jafari Kaleybar ◽  
Morris Brenna ◽  
Federica Foiadelli
Keyword(s):  
Control System ◽  
Power Quality ◽  
Predictive Control ◽  
Reactive Power ◽  
Control Method ◽  
Fast Response ◽  
Active Power ◽  
Two Phase ◽  
Power Substation ◽  
Quality Controller

One of the most challenging topics in electric railway networks (ERNs) is power quality (PQ) problems caused by single-phase feeding of time-varying and high-power locomotives. During previous years, many techniques and compensators have been offered to alleviate these problems. Railway active power quality controller (RAPQC) is considered as one of the most efficient approaches. Due to the time-variant, uncertainty and distorted features of ERNs, the controlling of RAPQCs has always been a substantial concern to experts. This paper presents, a new robust control system for two-phase three-wire RAPQC (ThRAPQC) based on generalized model predictive control integrated with modified instantaneous reactive power theory (GMPC-MIRP). A dual-loop balancing system has been adopted in the proposed control system to equalize the active powers of traction power substation (TPSS) adjacent feeders, compensate reactive powers and suppress harmonic simultaneously. The performance of the proposed method in comparison with the conventional Fryze-Buchholz-Depenbrock (FBD)-based current strategy together with hysteresis current controller (FBD-HCC) has been evaluated through the detailed simulations and Opal-RT 5600-based laboratory setup results. The fast response, high precision, lower fluctuation in reference current tracking and high capability of working in distorted conditions are the outstanding privileges of the proposed method that are confirmed by the output results.

scholarly journals POWER QUALITY IMPROVEMENT USING CUCKOO SEARCH BASED MULTI-LEVEL FACTS CONTROLLER

2021 ◽  
Author(s):  
B. Srinivasa Rao ◽  
◽  
D. Vijaya Kumar ◽  
K. Kiran Kumar ◽  
◽  
...  
Keyword(s):  
Power System ◽  
Power Quality ◽  
Optimization Technique ◽  
Cuckoo Search ◽  
Flexible Ac Transmission ◽  
Flexible Ac Transmission System ◽  
Power Quality Improvement ◽  
Power Quality Conditioner ◽  
Ac Transmission ◽  
Harmonic Distortions

Nowadays, the improvement of power quality is the major concern in power system scenario. These problems mainly caused due to utilization of different load conditions to the power system. To mitigate these problems different methods are implemented in literature. As per literature analysis the one of the Flexible AC Transmission System called as unified power quality conditioner (UPQC) plays a key role. The series and shunt controllers of UPQC designed with 9-level inverters to reduce the harmonic distortions. An instantaneous PQ theory is used to generate the reference signals required for series and shunt controllers along with dq-transformation analysis. A Cuckoo optimization technique is used to tune the parameters of PI controller in shunt controller to achieve better harmonic distortions and improve power quality. This proposed system is to be tested and verified in MATLAB/SIMULINK.

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