scholarly journals Real-time Lissajous imaging with a low-voltage 2-axis MEMS scanner based on electrothermal actuation

2020 ◽  
Vol 28 (6) ◽  
pp. 8512 ◽  
Author(s):  
Quentin A. A. Tanguy ◽  
Olivier Gaiffe ◽  
Nicolas Passilly ◽  
Jean-Marc Cote ◽  
Gonzalo Cabodevila ◽  
...  
Keyword(s):  
Real Time ◽  
Low Voltage ◽  
Electrothermal Actuation

Real-Time Low Voltage Network Monitoring—ICT Architecture and Field Test Experience

2015 ◽  
Vol 6 (4) ◽  
pp. 2002-2012 ◽  
Author(s):  
Shengye Lu ◽  
Sami Repo ◽  
Davide Della Giustina ◽  
Felipe Alvarez-Cuevas Figuerola ◽  
Atte Lof ◽  
...  
Keyword(s):  
Real Time ◽  
Field Test ◽  
Low Voltage ◽  
Network Monitoring

scholarly journals Experimental Validation and Deployment of Observability Applications for Monitoring of Low-Voltage Distribution Grids

Sensors ◽  
2021 ◽  
Vol 21 (17) ◽  
pp. 5770 ◽  
Author(s):  
Karthikeyan Nainar ◽  
Catalin Iosif Ciontea ◽  
Kamal Shahid ◽  
Florin Iov ◽  
Rasmus Løvenstein Olsen ◽  
...  
Keyword(s):  
Real Time ◽  
Data Storage ◽  
Distribution System ◽  
Low Voltage ◽  
Experimental Studies ◽  
Distribution Grid ◽  
Grid Voltage ◽  
Laboratory Setup ◽  
Field Deployment ◽  
Distribution Grids

Future distribution grids will be subjected to fluctuations in voltages and power flows due to the presence of renewable sources with intermittent power generation. The advanced smart metering infrastructure (AMI) enables the distribution system operators (DSOs) to measure and analyze electrical quantities such as voltages, currents and power at each customer connection point. Various smart grid applications can make use of the AMI data either in offline or close to real-time mode to assess the grid voltage conditions and estimate losses in the lines/cables. The outputs of these applications can enable DSOs to take corrective action and make a proper plan for grid upgrades. In this paper, the process of development and deployment of applications for improving the observability of distributions grids is described, which consists of the novel deployment framework that encompasses the proposition of data collection, communication to the servers, data storage, and data visualization. This paper discussed the development of two observability applications for grid monitoring and loss calculation, their validation in a laboratory setup, and their field deployment. A representative distribution grid in Denmark is chosen for the study using an OPAL-RT real-time simulator. The results of the experimental studies show that the proposed applications have high accuracy in estimating grid voltage magnitudes and active energy losses. Further, the field deployment of the applications prove that DSOs can gain insightful information about their grids and use them for planning purposes.

A LabVIEW-based Real-Time GUI for Switched Controlled Energy Harvesting Circuit for Low Voltage Application

2018 ◽  
Vol 66 (5) ◽  
pp. 720-730 ◽  
Author(s):  
MD Adnan Shahrukh Khan ◽  
R. K. Rajkumar ◽  
C. V. Aravind ◽  
Y. W. Wong ◽  
M. I. F. Bin Romli
Keyword(s):  
Energy Harvesting ◽  
Real Time ◽  
Low Voltage ◽  
Voltage Application

scholarly journals A High Speed Redundant IO Bus for Energy Power Controller System

2021 ◽  
Vol 2113 (1) ◽  
pp. 012024
Author(s):  
Qinghui Lou ◽  
Liguo Sun ◽  
Haisong Lu ◽  
Weifeng Xu ◽  
Zhebei Wang ◽  
...  
Keyword(s):  
Operating System ◽  
Real Time ◽  
High Throughput ◽  
High Speed ◽  
Low Voltage ◽  
Differential Signal ◽  
Real Time Operating System ◽  
Power Controller ◽  
Data Feedback ◽  
Memory Monitoring

Abstract This paper designs and implements a High Speed Redundant IO Bus for Energy Power Controller System. The physical layer adopts multi-point low-voltage differential signal standard. This bus has the characteristics of high real-time, high throughput and easy expansion. The controller communicates with IO module by A/B bus alternately, monitors link status in real time and collects IO module data. Non real time slots can be used to control non real time messages for IO modules such as time synchronizing and memory monitoring. The controller ARM core runs QNX real-time operating system, and transmits the message needed to communicate with IO modules to the FPGA through DMA. After receiving the message, the FPGA parses the message and automatically fills in the CRC check code and frame end flag at the end of the message. When the FPGA receives the data feedback from the IO module, it performs CRC verification. If the verification passes, it fills the corresponding module receiving buffer. Otherwise, it fills the CRC verification error flag in the register of the corresponding IO module to reduce the load of the arm core.

scholarly journals Series Arc Fault Breaker in Low Voltage Using Microcontroller Based on Fast Fourier Transform

2021 ◽  
Vol 9 (2) ◽  
pp. 239-251
Author(s):  
Dimas Okky Anggriawan ◽  
Audya Elisa Rheinanda ◽  
Muhammad Khanif Khafidli ◽  
Eka Prasetyono ◽  
Novie Ayub Windarko
Keyword(s):  
Fourier Transform ◽  
Fast Fourier Transform ◽  
Real Time ◽  
High Speed ◽  
Low Voltage ◽  
Resistive Load ◽  
Gas Ionization ◽  
Primary Driver ◽  
Experimental Process ◽  
Ac Arc

Series Arc Fault is one of the disturbances of arcing jump is caused by gas ionization between two ends of damaged conductors or broken wire forming a gap in the insulator. Series arc fault is the primary driver of electrical fire. However, lack of knowledge of the disturbance of series arc fault causes the problem of electrical fire not be mitigated. Magnitude current is not capable to detect of series arc fault. Therefore, this paper proposes fast fourier transform (FFT) to detect series AC arc fault in low voltage using microcontroller ARM STM32F7NGH in real time. A cheap and high speed of microcontroller ARM STM32F7NGH can be used for FFT computation to transform signal in time domain to frequency domain. Moreover, in this paper, protection of series AC arc fault is proposed in the real time mode. In this experimental process, some various experiments are tested to evaluate the reliability of FFT and protection with various load starts from 1 A, 2 A, 3 A, 4 A in resistive load. The result of this experiment shows that series AC arc fault protection with STM32F7 microcontroller and FFT algorithm can be utilized to ensure series AC arc fault properly.

scholarly journals Demonstration Study of Voltage Control of DC Grid Using Energy Management System Based DC Applications

Energies ◽  
2020 ◽  
Vol 13 (17) ◽  
pp. 4551
Author(s):  
Juyong Kim ◽  
Hongjoo Kim ◽  
Jintae Cho ◽  
Youngpyo Cho ◽  
Yoonsung Cho ◽  
...  
Keyword(s):  
Real Time ◽  
Energy Management ◽  
Distribution System ◽  
Management System ◽  
Low Voltage ◽  
Voltage Control ◽  
Energy Management System ◽  
Test Scenario ◽  
Demonstration Site ◽  
Power Testing

This paper is about the development of the real-time direct current (DC) network analysis applications for the operation of DC power systems. The applications are located in the central energy management system (EMS) and provide the operator with the optimal solution for operation in real time. Developed DC applications are not limited by voltage level. Applications can be used at all DC voltage levels such as low voltage, medium voltage and high voltage. A program configuration and sequence for analyzing the DC distribution system are suggested. Algorithms of each program are presented and the differences when compared with the processes of the applications of the existing alternating current (AC) systems are analyzed. The DC grid demonstration site at the Korea Electric Power Corporation (KEPCO) power testing center is introduced. The details of EMS and applications installation are described. The developed DC applications were installed in the EMS of the demonstration site and verification tests have been carried out. The configuration of the test scenario for testing the voltage control of the DC network is described. The voltage control result is analyzed and the measured data and the results of the applications are verified for compatibility by comparing them with the results of an off-line simulation tool. Finally, the future direction of the development of technology for the operation of the DC grid is introduced.

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