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Your search keyword '"Ngo Minh, Khoa"' showing total 3 results
Start Over Author "Ngo Minh, Khoa" Journal engineering, technology & applied science research
3 results on '"Ngo Minh, Khoa"'

1. An Arduino-Based System for Monitoring and Protecting Overvoltage and Undervoltage

Author

Ngo Minh Khoa and Doan Duc Tung

Subjects
undervoltage, business.industry, Computer science, realtime measurement, 020209 energy, 020208 electrical & electronic engineering, Electrical engineering, Serial port, 02 engineering and technology, AC power, overvoltage, Microcontroller, Experimental system, Overvoltage, Arduino, 0202 electrical engineering, electronic engineering, information engineering, Current sensor, voltage relay, business, experiment system, Voltage
Abstract

In this paper, an experimental system based on Arduino Uno microcontroller board was developed for measuring electrical quantities and protecting overvoltage and undervoltage conditions in a single-phase power supply. The main components are described in detail, including the hardware and software to build the system in which an Arduino Uno platform is implemented as a vital microcontroller to read voltage and current measurement from a voltage sensor (ZMPT101B) and a current sensor (ACS712) respectively. In addition, the Arduino is also used to send all measurement to a PC through a serial port for monitoring the measured data graphically. The proposed method for designing the software uses the root mean square (RMS) method for measuring electrical quantities and then the RMS voltage measurement is compared with the minimum voltage and the maximum voltage to switch on or switch off the load. The monitoring GUI is designed with the use of the free and open-source Telemetry Viewer v0.5 software to monitor RMS voltage, RMS current, active power, and trip signal of the experimental system. The experimental results in this paper demonstrate that the system operated correctly.

Published
2019

2. Modeling for Development of Simulation Tool: Impact of TCSC on Apparent Impedance Seen by Distance Relay

Author

Ngo Minh Khoa and Doan Duc Tung

Subjects
Power transmission, Computer science, apparent impedance, Thyristor, transmission line, computer.software_genre, Fault (power engineering), law.invention, Simulation software, TCSC, Electric power transmission, Transmission line, Relay, law, Electronic engineering, distance relay, firing angle, Voltage source, computer
Abstract

The impact of thyristor controlled series capacitor (TCSC) on distance protection relays in transmission lines is analyzed in this paper. Voltage and current data are measured and collected at the relay locations to calculate the apparent impedance seen by distance protection relays in the different operating modes of the TCSC connected to the line. Short-circuit faults which occur at different locations on the power transmission line are considered in order to locate the fault for the purpose of evaluating the impact of TCSC on the distance protection relay. Matlab/Simulink simulation software is used to model the power transmission line with two sources at the two ends. Voltage source, transmission line, TCSC, voltage and current measurement, and discrete Fourier transform (DFT) blocks are integrated into the model. Simulation results show the impact of TCSC on the distance protection relay and determine the apparent impedance and fault location in the line.

Published
2018

3. An Arduino-Based System for Monitoring and Protecting Overvoltage and Undervoltage.

Author

Doan Duc Tung and Ngo Minh Khoa

Subjects
OVERVOLTAGE, ARDUINO (Microcontroller), POWER resources, ELECTRIC potential measurement, MICROCONTROLLERS, DESIGN software
Abstract

In this paper, an experimental system based on Arduino Uno microcontroller board was developed for measuring electrical quantities and protecting overvoltage and undervoltage conditions in a single-phase power supply. The main components are described in detail, including the hardware and software to build the system in which an Arduino Uno platform is implemented as a vital microcontroller to read voltage and current measurement from a voltage sensor (ZMPT101B) and a current sensor (ACS712) respectively. In addition, the Arduino is also used to send all measurement to a PC through a serial port for monitoring the measured data graphically. The proposed method for designing the software uses the root mean square (RMS) method for measuring electrical quantities and then the RMS voltage measurement is compared with the minimum voltage and the maximum voltage to switch on or switch off the load. The monitoring GUI is designed with the use of the free and open-source Telemetry Viewer v0.5 software to monitor RMS voltage, RMS current, active power, and trip signal of the experimental system. The experimental results in this paper demonstrate that the system operated correctly. [ABSTRACT FROM AUTHOR]

Published
2019
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