scholarly journals Analytical voltage drop calculations during direct on line motor starting: Solutions for industrial plants

2022 ◽  
Vol 13 (4) ◽  
pp. 101671
Author(s):  
Selahattin Kucuk ◽  
Ali Ajder
Keyword(s):  
Voltage Drop ◽  
Industrial Plants ◽  
On Line ◽  
Starting Solutions

On-line biofilm monitoring by "BIOX" electrochemical probe

2003 ◽  
Vol 47 (5) ◽  
pp. 45-49 ◽  
Author(s):  
A. Mollica ◽  
P. Cristiani
Keyword(s):  
Microbial Corrosion ◽  
Cooling Systems ◽  
Biofilm Growth ◽  
Industrial Plants ◽  
Electrochemical Probe ◽  
Drinking Waters ◽  
On Line ◽  
Electrochemical Monitoring

The innovative electrochemical monitoring probe (BIOX) recently developed to improve the antifouling treatments of cooling systems in industrial plants is presented. On the basis of the good results obtained from applications on marine sites, some research has been started to validate this technique in biofilm growth and prevention of microbial corrosion in fresh and drinking waters.

Optical particle sizers for on-line applications in industrial plants

2003 ◽  
Vol 39 (2) ◽  
pp. 141-154 ◽  
Author(s):  
Iva Gianinoni ◽  
Elena Golinelli ◽  
Gianfranco Melzi ◽  
Sergio Musazzi ◽  
Umberto Perini ◽  
...  
Keyword(s):  
Industrial Plants ◽  
On Line

Satellite monitoring of ammonia: from point sources to long-term trends

2020 ◽  
Author(s):  
Lieven Clarisse ◽  
Martin Van Damme ◽  
Bruno Franco ◽  
Simon Whitburn ◽  
Juliette Hadji-Lazaro ◽  
...  
Keyword(s):  
Anthropogenic Activities ◽  
Temporal Analysis ◽  
Point Sources ◽  
Satellite Monitoring ◽  
Bottom Up ◽  
Industrial Plants ◽  
On Line ◽  
Long Term Trends ◽  
Distribution Type

<p>IASI satellite ammonia (NH<sub>3</sub>) measurements are used to identify, categorise and quantify world's NH<sub>3</sub> emission hotspots. In particular, applying spatial oversampling and supersampling techniques on more than 10 years of IASI measurements, we are able to track-down more than 500 localized point sources of agricultural, industrial (fertilizer, coking, soda ash, geothermal and explosives industries), urban and natural origin. We present an on-line global NH<sub>3</sub> point sources catalogue, consisting of an interactive global map, visualizing the distribution, type and time evolution of the different point sources (http://www.ulb.ac.be/cpm/NH3-IASI.html). Calculated satellite-based emissions of NH<sub>3</sub> suggest a drastic underestimation of point sources in bottom-up inventories, especially those of industrial emitters. Temporal analysis revealed rapid shifts in anthropogenic activities, such as the opening or closure of industrial plants. These results demonstrate that using NH<sub>3</sub> satellite data will be hugely beneficial for improving bottom-up emission inventories.</p><p>A recently obtained homogeneous data record of NH<sub>3</sub> total columns from IASI (ANNI-NH<sub>3</sub>-v3R) is also used to derive trends over the last decade. We apply a bootstrap resampling method to determine the trends and to assess whether the calculated values are significant or not. We obtain the first global distribution (0.5°×0.5°) of atmospheric NH<sub>3</sub> trends based on 11 years (2008-2018) of IASI/Metop-A observations. Distinct temporal patterns are extracted and are analysed in light of anthropogenic activities and biomass burning events. National absolute and relative trends are also calculated and discussed.</p>

scholarly journals Design of transformer secondary voltage drop on-line monitoring system based on Internet of things

2019 ◽  
Vol 677 ◽  
pp. 052028
Author(s):  
Yanjun Hao ◽  
Honggang Chen ◽  
Taoyun Zhang ◽  
Yugang Zhang ◽  
Dingjun Wen ◽  
...  
Keyword(s):  
Internet Of Things ◽  
Monitoring System ◽  
Voltage Drop ◽  
Secondary Voltage ◽  
On Line

Optical particle sizer for on-line monitoring of particulate emission from industrial plants

1995 ◽  
Author(s):  
Elena Golinelli ◽  
Paolo Martinelli ◽  
Sergio Musazzi ◽  
Umberto U. Perini ◽  
Franco Trespidi ◽  
...  
Keyword(s):  
Particulate Emission ◽  
Industrial Plants ◽  
On Line ◽  
Particle Sizer

scholarly journals On-Line Remaining Useful Life Estimation of Power Connectors Focused on Predictive Maintenance

Sensors ◽  
2021 ◽  
Vol 21 (11) ◽  
pp. 3739
Author(s):  
Jordi-Roger Riba ◽  
Álvaro Gómez-Pau ◽  
Jimmy Martínez ◽  
Manuel Moreno-Eguilaz
Keyword(s):  
Power Systems ◽  
Electrical Resistance ◽  
Voltage Drop ◽  
Moving Average ◽  
Remaining Useful Life ◽  
Predictive Maintenance ◽  
Moving Average Model ◽  
On Line ◽  
Useful Life ◽  
Two Parameters

Connections are critical elements in power systems, exhibiting higher failure probability. Power connectors are considered secondary simple devices in power systems despite their key role, since a failure in one such element can lead to major issues. Thus, it is of vital interest to develop predictive maintenance approaches to minimize these issues. This paper proposes an on-line method to determine the remaining useful life (RUL) of power connectors. It is based on a simple and accurate model of the degradation with time of the electrical resistance of the connector, which only has two parameters, whose values are identified from on-line acquired data (voltage drop across the connector, electric current and temperature). The accuracy of the model presented in this paper is compared with the widely applied autoregressive integrated moving average model (ARIMA), showing enhanced performance. Next, a criterion to determine the RUL is proposed, which is based on the inflection point of the expression describing the electrical resistance degradation. This strategy allows determination of when the connector must be replaced, thus easing predictive maintenance tasks. Experimental results from seven connectors show the potential and viability of the suggested method, which can be applied to many other devices.

The on-line use of histogram data for high-speed correction and alignment of electron microscope images

1984 ◽  
Vol 42 ◽  
pp. 556-557
Author(s):  
William Krakow
Keyword(s):  
Power Spectrum ◽  
High Speed ◽  
Direct Memory Access ◽  
Digital Television ◽  
Contrast Transfer Function ◽  
The Past ◽  
High Resolution Tem ◽  
On Line ◽  
Correction Of Astigmatism ◽  
The Fourier Transform

In the past few years on-line digital television frame store devices coupled to computers have been employed to attempt to measure the microscope parameters of defocus and astigmatism. The ultimate goal of such tasks is to fully adjust the operating parameters of the microscope and obtain an optimum image for viewing in terms of its information content. The initial approach to this problem, for high resolution TEM imaging, was to obtain the power spectrum from the Fourier transform of an image, find the contrast transfer function oscillation maxima, and subsequently correct the image. This technique requires a fast computer, a direct memory access device and even an array processor to accomplish these tasks on limited size arrays in a few seconds per image. It is not clear that the power spectrum could be used for more than defocus correction since the correction of astigmatism is a formidable problem of pattern recognition.

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