scholarly journals An Embedded Sensor Node for the Surveillance of Power Quality

Energies ◽  
2019 ◽  
Vol 12 (8) ◽  
pp. 1561 ◽  
Author(s):  
Guerrero-Rodríguez ◽  
Cobos-Sánchez ◽  
González-de-la-Rosa ◽  
Sales-Lérida
Keyword(s):  
Power Systems ◽  
Power Quality ◽  
Low Cost ◽  
Energy System ◽  
Sine Wave ◽  
Computational Effort ◽  
Electrical Network ◽  
Function Generator ◽  
Power Monitoring ◽  
Software Application

The energy supply of office buildings and smart homes is a key issue in the global energy system. The growing use of microelectronics-based technology achieves new devices for a more comfortable life and wider use of electronic office equipment. On the one hand, these applications incorporate more and more sensitive electronic devices which are potentially affected by any external electrical transient. On the other hand, the existing electrical loads, which generally use electronic power systems (such as different types of battery chargers, ballasts, inverters, switching power supplies, etc.), generate different kinds of transients in their own electrical internal network. Moreover, improvements in the information of the state of the mains alternating current (AC) power line allows risk evaluation of any disturbance caused to permanently connected electronic equipment, such as computers, appliances, home security systems, phones, TVs, etc. For this reason, it is nowadays more important to introduce monitoring solutions into the electrical network to measure the level of power quality so that it can protect itself when necessary. This article describes a small and compact detector using a low-cost microcontroller and a very simple direct acquiring circuit. In addition; it analyzes different methods to implement various power quality (PQ) surveillance algorithms that can be implemented in this proposed minimum hardware platform. Hence; it is possible to achieve cheap and low-power monitoring devices that can become nodes of a wireless sensor network (WSN). The work shows that using a small computational effort; reasonable execution speed; and acceptable reliability; this solution can be used to detect a variety of large disturbance phenomena and spread the respective failure report through a 433 MHz or 2.4 GHz radio transmitter. Therefore, this work can easily be extended to the Internet of Things (IoT) paradigm. Simultaneously, a software application (PulsAC) has been developed to monitor the microcontroller’s real-time progress and detection capability. Moreover, this high-level code (C++ language), allows us to test and debug the different utilized algorithms that will be later run by the microcontroller unit. These tests have been performed with real signals introduced by a function generator and superimposed on the true AC sine wave

scholarly journals Demand Side Management using Grid-Tied Photovoltaic Energy System

2019 ◽  
Vol 9 (1) ◽  
pp. 4190-4194 ◽  
Keyword(s):  
Energy Management ◽  
Electricity Market ◽  
Low Cost ◽  
Cost Savings ◽  
Energy System ◽  
Electrical Network ◽  
Solar Pv ◽  
Pv System ◽  
Great Cost ◽  
The Impact

This paper investigates the impact of investments in DSM technologies in Palestinian electricity market in order to solve the problem of supply shortages in electrical network, especially in peak demand periods. Renewable hybrid system, which can explore solar PV source at low cost, is a popular choice for this purpose nowadays, optimal energy management solutions can be obtained with great cost savings and active control performance. This paper analyzes the performance and feasibility of implementation DSM system in Palestinian distribution network, using on-grid PV system and energy management system.

scholarly journals A SIMPLE PATTERN RECOGNITION-BASED METHOD FOR POWER QUALITY DISTURBANCE DETECTION

2021 ◽  
Vol 5 (3) ◽  
pp. 1-10
Author(s):  
Robson Rosserrani De Lima ◽  
Danton Diego Ferreira ◽  
José Manoel de Seixas ◽  
Leonardo Silveira Paiva
Keyword(s):  
Power Systems ◽  
Power Quality ◽  
Low Complexity ◽  
Mean Value ◽  
Computational Effort ◽  
Detection Rates ◽  
Detection Algorithms ◽  
Power Quality Disturbance ◽  
Simple Detection ◽  
Disturbance Detection

Voltage disturbances are the most frequent cause of a large range of disruption in industrial, commercial, and residential power supply systems. These disturbances are often referred to as power quality problems and affect the Power Systems causing substantial losses. To avoid the storage of a large amount of data, the first task in monitoring the power quality is the realtime detection of disturbances, which must be performed by an accurate and low-complexity system. This paper proposes a low-complexity system for power quality disturbance detection. The method makes innovative use of simple features extracted from reduced segments of the monitored voltage waveform. The extract features (the mean value, variance, energy, and the maximum and minimum values of the filtered voltage signals) require low computational effort and allow a considerable dimensional reduction of the signals, leading to simple detection algorithms. The proposed method achieves high detection rates on both simulated and real signals.

Technical and Economical Assessment of using Static Compensators for Improving Power Quality in Distribution Power Systems

2018 ◽  
Vol 8 (3) ◽  
Author(s):  
Reza Tajik
Keyword(s):  
Power Systems ◽  
Power Quality ◽  
Low Cost ◽  
Optimal Solution ◽  
Distribution Networks ◽  
Mixed Integer ◽  
Objective Functions ◽  
Dynamic Voltage Restorer ◽  
Multi Objective ◽  
Hybrid Devices

Nowadays, various issues regarding the power quality have been widely considered. Regarding to the progress made in power electronics in recent years, the best way to improve the reliability of reducing voltage deviations, reducing losses, and generally providing high quality to consumers is to use custom power devices (CPDs). Series, parallel, or hybrid devices come from a subset of CPDs such as a dynamic voltage restorer, distribution static compensator, and unified power quality conditioner. In this work, the purpose of place these devices are to achieve various goals of improving power quality and reducing system costs. To achieve these goals, at first, the problem of single-objective optimization for each of the objective functions was solved separately. After determining the optimal value of each of the objective functions, the fuzzy membership functions for each of the objective functions were suitably optimized for each objective function. A mixed integer genetic algorithm was used to find the optimal answer to this multi-objective problem. The simulation results show that the proposed algorithm has worked well to find the optimal solution. The results of multi-objective planning proposed in this study show that with proper planning, it can be done at a low cost and even with a relatively high profit to cost and with the proper place of CPDs, to solve issues related to power quality issues in distribution networks.

scholarly journals Low-Cost SCADA System Using Arduino and Reliance SCADA for a Stand-Alone Photovoltaic System

2018 ◽  
Vol 2018 ◽  
pp. 1-8 ◽  
Author(s):  
Ibrahim Allafi ◽  
Tariq Iqbal
Keyword(s):  
Power Systems ◽  
Low Cost ◽  
Energy System ◽  
Photovoltaic System ◽  
Hybrid Power Systems ◽  
Renewable Energy Systems ◽  
Scada System ◽  
Current Voltage ◽  
Arduino Uno ◽  
Set Up

SCADA (supervisory control and data acquisition) systems are currently employed in many applications, such as home automation, greenhouse automation, and hybrid power systems. Commercial SCADA systems are costly to set up and maintain; therefore those are not used for small renewable energy systems. This paper demonstrates applying Reliance SCADA and Arduino Uno on a small photovoltaic (PV) power system to monitor the PV current, voltage, and battery, as well as efficiency. The designed system uses low-cost sensors, an Arduino Uno microcontroller, and free Reliance SCADA software. The Arduino Uno microcontroller collects data from sensors and communicates with a computer through a USB cable. Uno has been programmed to transmit data to Reliance SCADA on PC. In addition, Modbus library has been uploaded on Arduino to allow communication between the Arduino and our SCADA system by using MODBUS RTU protocol. The results of the experiments demonstrate that SCADA works in real time and can be effectively used in monitoring a solar energy system.

scholarly journals Analysis of the influence of non-sinusoidal and unbalanced network modes on induction motors

2021 ◽  
Vol 289 ◽  
pp. 01002
Author(s):  
Ngo Van Cuong ◽  
Lidiia I. Kovernikova
Keyword(s):  
Power Systems ◽  
Power Quality ◽  
Induction Motors ◽  
Electrical Power ◽  
Electrical Energy ◽  
Operating Conditions ◽  
Premature Aging ◽  
Electrical Network ◽  
Electrical Networks ◽  
Electrical Power Systems

The parameters of electrical network modes do not correspond the requirements GOST 32144-2013 of Russian and the National technical regulation of Vietnam. In real operating conditions in electrical networks in non-sinusoidal and unbalanced modes there are harmonic components of voltages and currents as well as voltages and currents of negative sequence. They cause additional losses of active power, which leads to additional heating and causes premature aging of the insulation, and as the result, the reduction in the service life of induction motors. Currently, we see that the process of formation of intelligent electrical power systems is underway. Systems for continuous monitoring of power quality indices and parameters of electrical systems modes are being developed. These systems can be supplemented with programs for calculating characteristics that issue the warning when the unfavorable influence of the parameters of non-sinusoidal and unbalanced modes is detected on various electrical equipment of both electrical power systems and consumers of electrical energy. The paper provides an overview of the characteristics used to analyze, assess and predict the influence of poor power quality associated with non-sinusoidal and unbalanced of currents and voltages on induction motors. A computer program was developed to calculate these characteristics. The program was used to study the influence of non-sinusoidal and unbalanced modes on the induction motors of the coal sorting plant of the Vietnamese company “Cua Ong-Vinacomin”.

scholarly journals Low-cost platform for the evaluation of single phase electromagnetic phenomena of power quality according to the IEEE 1159 standard

DYNA ◽  
2015 ◽  
Vol 82 (194) ◽  
pp. 119-129 ◽  
Author(s):  
Jorge Luis Diaz Rodriguez ◽  
Luis David Pabón Fernández ◽  
Jorge Luis Contreras Peña
Keyword(s):  
Power Systems ◽  
Power Quality ◽  
Single Phase ◽  
Hardware Implementation ◽  
Low Cost ◽  
Electrical Power ◽  
Electrical Power Systems ◽  
Acquisition Device ◽  
Ieee Standard ◽  
Study Case

This paper presents the development of a data acquisition system and the evaluation of the electromagnetic phenomena associated with power quality according to the IEEE Standard 1159-1992 and applied to the particular case of single-phase electrical power systems. The evaluation software is implemented in the Labview® professional software using a NI 6009 USB board of the National Instrument® as acquisition device. The hardware implementation of the sensors was shown. Also the development of the algorithm and the design of a graphical user interface for viewing of the voltage and current waveforms, spectra, frequency and the power quality disturbances such as sags, swells, undervoltage, overvoltage, so on. Likewise, at the end a concise analysis of costs is presented to show that the developed system has a lower price to current solutions that are available in the market. Finally a study case was shown.

scholarly journals A methodical approach and computer programs to determine the power of active harmonic filters

2021 ◽  
Vol 289 ◽  
pp. 01001
Author(s):  
Bui Ngoc Hung ◽  
Lidiia I. Kovernikova
Keyword(s):  
Power Systems ◽  
Computer Program ◽  
Power Quality ◽  
Electrical Power ◽  
Computer Programs ◽  
Electrical Network ◽  
Quality Indices ◽  
The Poor ◽  
Methodical Approach ◽  
Harmonic Filter

Poor power quality creates big problems. With the poor power quality, the service life of the equipment is reduced. In connection with the creation and development of intelligent electrical power systems and the digital economy, the requirements for the power quality are increasing. Active harmonic filters began to used to solve problem with the poor power quality. The paper presents a methodical approach and computer programs for determining the power of the active harmonic filter. The power supply system of the Vietnamese coal sorting plant is considered to develop the methodical approach. The results of measurements of the power quality indices and the results of calculating the parameters of the modes of the electrical network of the plant at the fundamental frequency were used. To process a large amount of measured information, the special computer program was developed. On the basis of the methodical approach, the results of measurements of the power quality indices and the computer complex “Stationary permissible optimal mode”, the algorithm and the computer program have been developed to calculate the power of the active harmonic filter. The power of the active harmonic filter for the coal sorting plant was determined with the help of this program.

scholarly journals Development of Low-Cost High-Power Sinusoidal Function Generator for Driving a Single Tone Wave into Speaker using Arduino Uno and 2N3055

2019 ◽  
Vol 2 (2) ◽  
Author(s):  
Adimas Wicaksana ◽  
Sulanjari Sulanjari
Keyword(s):  
Power Function ◽  
High Power ◽  
Low Cost ◽  
Sine Wave ◽  
Function Generator ◽  
Single Tone ◽  
Square Wave ◽  
Arduino Uno ◽  
Sinusoidal Function ◽  
Electronics Testing

Function generator is one of the most important equipment in electronics testing. However its cost can be quite prohibitive. In this work we will study how to transform a square wave generated by Arduino into a sine wave by using filter/amplifier based on 2N3055, thus enabling low-cost high-power function generator. Said function generator will be shown to  be capable of producing sine wave with frequency between 500Hz-10KHz. With proper tuning it is capable of achieving up to 0.6% accuracy within the desired value.

scholarly journals High Accuracy Power Quality Evaluation under a Colored Noisy Condition by Filter Bank ESPRIT

Electronics ◽  
2019 ◽  
Vol 8 (11) ◽  
pp. 1259 ◽  
Author(s):  
Elaine Santos ◽  
Mahdi Khosravy ◽  
Marcelo A. A. Lima ◽  
Augusto S. Cerqueira ◽  
Carlos A. Duque ◽  
...  
Keyword(s):  
Power Systems ◽  
Power Quality ◽  
Filter Bank ◽  
Colored Noise ◽  
Renewable Energy Sources ◽  
Quality Parameters ◽  
Computational Effort ◽  
Parameters Estimation ◽  
Quality Analysis ◽  
High Level

Due to the highly increasing integration of renewable energy sources with the power grid and their fluctuations, besides the recent growth of new power electronics equipment, the noise in power systems has become colored. The colored noise affects the methodologies for power quality parameters’ estimation, such as harmonic and interharmonic components. Estimation of signal parameters via rotational invariance techniques (ESPRIT) as a parametric technique with high resolution has proven its efficiency in the estimation of power signal components’ frequencies, amplitudes, and phases for quality analysis, under the assumption of white Gaussian noise. Since ESPRIT suffers from high computational effort, filter bank ESPRIT (FB-ESPRIT) was suggested for mitigation of the complexity. This manuscript suggests FB-ESPRIT as well for accurate and robust estimation of power signal components’ parameters in the presence of the colored noise. Even though the parametric techniques depend on the Gaussianity of contaminating noise to perform properly, FB-ESPRIT performs well in colored noise. The FB-ESPRIT superiority compared with the conventional ESPRIT and MUSIC techniques was demonstrated through many simulations runs on synthetic power signals with multiple harmonics, interharmonics, and subharmonic components in the presence of noises of different colors and different SNR levels. FB-ESPRIT had a significant efficiency superiority in power quality analysis with a wide gap distance from the other estimators, especially under the high level of colored noise.

scholarly journals A new multifunctional DVR for compensation of voltage sag

2018 ◽  
Vol 7 (2.19) ◽  
pp. 45
Author(s):  
N. Srinivasa Rao ◽  
A. Selwin Mich Priyadharson
Keyword(s):  
Power Quality ◽  
Distribution System ◽  
Distribution Systems ◽  
Low Cost ◽  
Electrical Network ◽  
Dynamic Voltage Restorer ◽  
Power Injection ◽  
Point Of Common Coupling ◽  
Dynamic Voltage ◽  
Emergency Scenarios

Today, power quality is considered as a significant application. i) Highly effectual variable speed drive, ii) sophisticated electronic equipment together with iii) power electronic controller, is utilized to enhance power quality (PQ). Voltage sags are the prevalent PQ disturbances on the distribution system. It occurs on account of the faults developed in the electrical network or by the working of a huge induction motor. It is resolved by utilizing the conventional power device termed DVR (Dynamic Voltage Restorer). It is of small size and also low cost. It proffers quick dynamic response to the disturbance. A multifunctional DVR is utilized here to augment the PQ with the aid of P+ Resonant and Posicast controllers to remove the steady-state error (SSE) and enhance the transient response. Simulation outcome displays that the DVR enables to restrain the emergency scenarios of the distribution systems. The prevailing limitation reinstate the PCC (i.e. point of common coupling) (i.e. the bus to which every feeders are linked) voltage and Defend the DVR itself. The DVR performs as virtual impedance with the chief target of shielding the PCC voltage all through the downstream fault without affecting real power injection in the DVR which is the significant innovation discussed here.

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