Power Systems Inspection Robot for Contactless Busbar Voltage Measurement and Underground Cable Tracking

The article describes the results of testing a Benning AC/DC power supply, with integrated NIT TBA-ST meter. Such integration enables accurate and energy-efficient measurements of available capacity of individual 48-voltage VRLA/AGM batteries with remote management possibilities. The full compliance with the requirements for telecommunication power systems, the great functionality, upgrade ability, immunity to user errors and the high accuracy of capacity and voltage measurement of battery monoblocks of proposed solution are presented.

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Data Logger Digital Berbasis ATmega 2560

Navigation Physics : Journal of Physics Education ◽

10.30998/npjpe.v1i2.198 ◽

2020 ◽

Vol 1 (2) ◽

pp. 41-46

Author(s):

Alhidayatuddiniyah T W ◽

Siwi Puji Astuti ◽

Santy Handayani

Keyword(s):

Power Systems ◽

Wind Power ◽

Power Plants ◽

Solar Power ◽

Measurement Data ◽

Data Retrieval ◽

Voltage Measurement ◽

Data Logger ◽

Electric Voltage ◽

Maximum Voltage

In this research, a data logger has been created to record the measurement results of current and electric voltage from a solar power system and wind power. This study aims to make a current and voltage measurement data recorder automatically so that the data retrieval process is easier and more accurate. Data loggers have 10bit ADC accuracy and data can be stored in a Micro SD Card. Data recording by a data logger is done every 100 ms for twenty-four hours then the data is plotted. The results of seven days of collecting current and voltage data for solar power plants obtained graphs such as square waves with maximum voltage and current are 33 volts and 537 mA, for wind power systems the maximum voltage and current were 26 volts and 273 mA. The memory used to record for one day is 5.2MB so the data logger is able to measure the current and voltage of the power generation system and record the measurement data for twenty-four hours continuously

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A Grid Voltage Measurement Method for Wind Power Systems during Grid Fault Conditions

Energies ◽

10.3390/en7117732 ◽

2014 ◽

Vol 7 (11) ◽

pp. 7732-7745 ◽

Cited By ~ 4

Author(s):

Cheol-Hee Yoo ◽

Il-Yop Chung ◽

Hyun-Jae Yoo ◽

Sung-Soo Hong

Keyword(s):

Power Systems ◽

Wind Power ◽

Measurement Method ◽

Voltage Measurement ◽

Grid Voltage ◽

Wind Power Systems

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Low Power Contactless Voltage Sensor for Low Voltage Power Systems

Sensors ◽

10.3390/s19163513 ◽

2019 ◽

Vol 19 (16) ◽

pp. 3513 ◽

Cited By ~ 2

Author(s):

Antonio Delle Femine ◽

Daniele Gallo ◽

Carmine Landi ◽

Alessandro Lo Schiavo ◽

Mario Luiso

Keyword(s):

Power Systems ◽

Low Power ◽

Good Accuracy ◽

Low Voltage ◽

Harmonic Distortion ◽

Voltage Sensor ◽

Power Cable ◽

Voltage Measurement ◽

Line Voltage ◽

Capacitive Probe

Contactless measurements represent the desirable solution in many contexts, where minimal cabling is required or, in general, cabling is not possible. This paper presents a new contactless voltage sensor for low voltage power systems. It is based on a contactless capacitive probe, which surrounds the power cable. It has two concentric electrodes insulated by a shield. A low power analog conditioning circuit evaluates the power line voltage by measuring the current in one of the capacitances of the probe. All the single stages of the circuit have been designed by using low-power rail-to-rail operational amplifiers, supplied at 3.3 V, in order to minimize the power absorption. The sensor has been characterized in various conditions, with sine waves and distorted signals, varying the frequency and the harmonic distortion. The influence of the current, flowing into the power cable, on the voltage measurement has been evaluated too. It shows a good accuracy (lower than 0.3%) from 100 V to 300 V, with a power consumption less than 5 mW.

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RVM versus PDC Methods for Insulations’ Conductivity and Moisture Content Monitoring

Jurnal Teknologi ◽

10.11113/jt.v64.2100 ◽

2013 ◽

Vol 64 (4) ◽

Author(s):

R. A. Zainir ◽

N. A. Muhamad ◽

Z. Adzis ◽

M. A. M. Piah ◽

N. F. Kasri ◽

...

Keyword(s):

Moisture Content ◽

Power Systems ◽

Time Domain ◽

Diagnostic Methods ◽

Insulation Material ◽

Voltage Measurement ◽

Depolarization Current ◽

Measurement And Analysis ◽

High Voltage Insulation ◽

Condition Based Monitoring

Degradation due to ageing is a major concern for the life span of high voltage insulation. In maintaining the insulation system’s performance, it is crucial to monitor the insulation condition as it contributes to the whole system’s efficiency and safety. Many diagnostic methods have been introduced, and in use for monitoring the condition of insulation. Measurement and analysis in either frequency or time domain. Condition-based monitoring (CBM) is in growing interest lately, compared to time-based monitoring due to the increasing population of aged insulators being utilized in existing power systems. Time-based monitoring has then been integrated with CBM. CBM’s ability to enhance reliability, improve safety and reduce hazard of a system has been recognized by many researchers and utilities. This paper presents the study and comparison of two time domain CBM techniques namely the polarization and depolarization current (PDC) measurement and return voltage measurement (RVM). Findings of previous researches on determining the insulator’s moisture content and conductivity by both methods were reviewed. Moisture content and conductivity affect the dielectric response of the insulation material. Thus, condition of the insulation system can be determined based on these two characteristics.

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