scholarly journals Reconfigurable Power Quality Analyzer Applied to Hardware-in-Loop Test Bench

Energies ◽  
2021 ◽  
Vol 14 (16) ◽  
pp. 5134
Author(s):  
Jahangir Badar ◽  
Saddaqat Ali ◽  
Hafiz Mudassir Munir ◽  
Veer Bhan ◽  
Syed Sabir Hussain Bukhari ◽  
...  
Keyword(s):  
Power Quality ◽  
Data Storage ◽  
Quality Data ◽  
Inrush Current ◽  
Renewable Energy Resources ◽  
Interactive Interface ◽  
Current Voltage ◽  
Voltage Swell ◽  
Quality Issues ◽  
Hardware In Loop

Integration of renewable energy resources and conventional grids leads to an increase in power quality issues. These power quality issues require different standards to be followed for accurate measurement and monitoring of various parameters of the power system. Conventional power quality analyzers (PQAs) are programmed to a particular standard and cannot be reconfigured by the end user. Therefore, conventional PQAs cannot meet the challenges of a rapidly changing grid. In this regard, a Compact RIO-based (CRIO-based) PQA was proposed, that can be easily reprogrammed and cope with the challenges faced by conventional PQAs. The salient features of the proposed PQA are a high processing speed, interactive interface, and high-quality data-storage capacity. Moreover, unlike conventional PQAs, the proposed PQA can be monitored remotely via the internet. In this research, a hardware-in-loop (HIL) simulation is used for performing the power-quality assessment in a systematic manner. Power quality indices such as apparent power, power factor, harmonics, frequency disturbance, inrush current, voltage sag and voltage swell are considered for validating the performance of the proposed PQA against the Fluke’s PQA 43-B.

scholarly journals Intelligent Starting Current-Based Fault Identification of an Induction Motor Operating under Various Power Quality Issues

Energies ◽  
2021 ◽  
Vol 14 (2) ◽  
pp. 304
Author(s):  
Sakthivel Ganesan ◽  
Prince Winston David ◽  
Praveen Kumar Balachandran ◽  
Devakirubakaran Samithas
Keyword(s):  
Standard Deviation ◽  
Power Quality ◽  
Monitoring System ◽  
Condition Monitoring ◽  
Classification Accuracy ◽  
Induction Motors ◽  
Quality Data ◽  
Starting Current ◽  
Quality Issues ◽  
Condition Monitoring System

Since most of our industries use induction motors, it is essential to develop condition monitoring systems. Nowadays, industries have power quality issues such as sag, swell, harmonics, and transients. Thus, a condition monitoring system should have the ability to detect various faults, even in the presence of power quality issues. Most of the fault diagnosis and condition monitoring methods proposed earlier misidentified the faults and caused the condition monitoring system to fail because of misclassification due to power quality. The proposed method uses power quality data along with starting current data to identify the broken rotor bar and bearing fault in induction motors. The discrete wavelet transform (DWT) is used to decompose the current waveform, and then different features such as mean, standard deviation, entropy, and norm are calculated. The neural network (NN) classifier is used for classifying the faults and for analyzing the classification accuracy for various cases. The classification accuracy is 96.7% while considering power quality issues, whereas in a typical case, it is 93.3%. The proposed methodology is suitable for hardware implementation, which merges mean, standard deviation, entropy, and norm with the consideration of power quality issues, and the trained NN proves stable in the detection of the rotor and bearing faults.

scholarly journals A Novel Scheme of Multiple Identification of Faults in the Transmission Line

2020 ◽  
Vol 9 (9) ◽  
pp. 108-116
Keyword(s):  
Transmission Line ◽  
Power Quality ◽  
Power Supply ◽  
Intelligent System ◽  
Voltage Drop ◽  
Fault Analysis ◽  
Matlab Simulink ◽  
Current Voltage ◽  
Power Quality Disturbance ◽  
Voltage Swell

Recognition and arrangement of current-voltage, power fluctuations are critical functions for the safety of the power system (PS). Many perturbations of power quality (PQ) are unpredictable and ephemeral, and the demand for voltage and current recognition and arrangement is confirmed. By using Fast Fourier transform, expert systems, and neural networks, certain intelligent system technologies dominate fault analysis. As expected, there are five types of issues that include sag and swell, ripple, transient fluctuation, interruption and natural waveform. In this paper, we study the transmission line faults for voltage drop, voltage swell, and transient voltage. Power supply and traffic transmission leakage have been major problems for electricity providers and consumers. Much of the disturbance is non-stationary and intermittent, needing specialized methods and techniques for PQ disturbance research. This article provides a full collection of MATLAB / Simulink models to simulate different energy efficiency disturbances. This paper implements power quality disturbance in the model Matlab/ Simulink. The model provided can be used to simulate various disturbances of energy quality and waveforms for analysis and research into power quality, and to help to develop educational programs and understand the energy quality. This would concentrate on what are PQ problems and current approaches to evaluate and classify such problems.

scholarly journals A Comparative Study of Supercapacitor-Based STATCOM in a Grid-Connected Photovoltaic System for Regulating Power Quality Issues

2020 ◽  
Vol 12 (17) ◽  
pp. 6781 ◽  
Author(s):  
Muhammad Moin Afzal ◽  
Muhammad Adil Khan ◽  
Muhammad Arshad Shehzad Hassan ◽  
Abdul Wadood ◽  
Waqar Uddin ◽  
...  
Keyword(s):  
Energy Storage ◽  
Power Quality ◽  
Reactive Power ◽  
Voltage Drop ◽  
Storage System ◽  
Energy Storage System ◽  
Photovoltaic System ◽  
Renewable Energy Resources ◽  
Pv System ◽  
Quality Issues

Renewable energy resources (RERs) play a vital role in reducing greenhouse gases, as well as balancing the power generation demand in daily life. Due to the high penetration of RERs and non-linear loads into utility power systems, various power quality issues arise, i.e., voltage drop, harmonic distortion, reactive power demand, etc. In order to handle these power quality issues, there is a need for smart flexible alternating current transmission system (FACTS) devices. In this paper, a super capacitor energy storage system (SCESS)-based static synchronous compensator (STATCOM) is designed in order for the grid-connected photovoltaic (PV) system to overcome the abovementioned power quality issues. A voltage controller and a d-q axis controller are used for the efficient performance of the STATCOM. In order to show the superiority of the supercapacitor, a detailed comparison is made between a battery energy storage system (BESS)-based STATCOM and a SCESS-based STATCOM. Four scenarios are studied to evaluate the performance of the proposed STATCOM design. The proposed SCESS-based STATCOM not only boosts the voltage but also stabilizes it from 368 V to 385 V (Ph-Phrms). The simulated results have confirmed that the proposed design is not only superior to a BESS-based STATCOM but also has the capability to overcome the power quality issues as well.

Comparison of Two Topologies for Off-Grid Home

2014 ◽  
Vol 1049-1050 ◽  
pp. 798-801
Author(s):  
De Gang Zhang ◽  
De Hai Zhang ◽  
Shi Su ◽  
Song Zhou ◽  
Wen Bin Zhang ◽  
...  
Keyword(s):  
Power Quality ◽  
Electronic Devices ◽  
Power Source ◽  
Matlab Simulink ◽  
Grid Systems ◽  
Remote Areas ◽  
Current Voltage ◽  
Simulation Results ◽  
Quality Issues

Off-grid systems are proposed for the power shortage in remote areas. In an off-grid home, electronic devices can result in poor power quality issues. In this paper, two topologies of off-grid systems are presented and compared to chose more suitable one for an off-grid home. One compared topology is a system with inverter and transformer, and another one with the converter and inverter. We compared and examined their corresponding current, voltage waveforms, and the THD values based on the same power source and load by the Matlab/Simulink software. The simulation results show that the system with inverter and transformer is more suitable for off-grid home in remote areas.

scholarly journals Comparative investigation of single-phase Distributed Grid-connected with and without D-STATCOM

2021 ◽  
Vol 309 ◽  
pp. 01045
Author(s):  
Kalagotla Chenchireddy ◽  
Khammampati R Sreejyothi ◽  
V Kumar
Keyword(s):  
Power System ◽  
Power Quality ◽  
Power Supply ◽  
Single Phase ◽  
Comparative Investigation ◽  
Power Devices ◽  
Voltage Swell ◽  
Quality Issues ◽  
Basic Power ◽  
Custom Power

Power quality becomes one of the significant contemplations in the power system. It has become significant particularly with the presentation of advanced devices. These high-level advanced devices are sensitive to the nature of the power supply. The power quality refers to the voltage, current, and frequency at the evaluated value. If any variation occurred in these quantities the standard rating is considered as the power quality problem. The power quality issues like loss of sine, voltage sag, voltage swell, short interruption, long interruption, flicker, and harmonics. To overcome these power quality issues, we like to utilize custom power devices on the distribution side. Among various custom power devices, Distribution Static Synchronous Compensator is liked to use for expanding the power quality, on account of their basic power supply at the circulation power system which can’t be interfered with development and less complexity. This paper presents the near research of single-phase with and without D-STATCOM by utilizing MATLAB Simulink programming.

Unit Template Based Control of PV-DSTATCOM

2020 ◽  
Vol 13 (1) ◽  
pp. 36-42
Author(s):  
Gunjan Varshney ◽  
Durg S. Chauhan ◽  
Madhukar P. Dave ◽  
Nitin
Keyword(s):  
Power Quality ◽  
Power Factor ◽  
Power Distribution ◽  
Distribution System ◽  
Distribution Systems ◽  
Phase Distribution ◽  
Voltage Regulation ◽  
Photovoltaic Array ◽  
Quality Issues ◽  
Static Compensator

Background: In modern electrical power distribution systems, Power Quality has become an important concern due to the escalating use of automatic, microprocessor and microcontroller based end user applications. Methods: In this paper, power quality improvement has done using Photovoltaic based Distribution Static Compensator (PV-DSTATCOM). Complete simulation modelling and control of Photovoltaic based Distribution Static Compensator have been provided in the presented paper. In this configuration, DSTATCOM is fed by solar photovoltaic array and PV module is also helpful to maintain the DC link voltage. The switching of PV-STATCOM is controlled by Unit template based control theory. Results: The performance of PV-DSTATCOM has been evaluated for Unity Power Factor (UPF) and AC Voltage Control (ACVC) modes. Here, for studying the power quality issues three-phase distribution system is considered and results have been verified through simulation based on MATLAB software. Conclusion: Different power quality issues and their improvement are studied and presented here for harmonic reduction, DC voltage regulation and power factor correction.

Sign in / Sign up

Export Citation Format

Share Document