Searched for: subject%3A%22discharge%22
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Le Poole, Dorius (author)
River discharge is traditionally required with a lot of measurements and data. However there are areas where discharge data is not available. In this research a tool is developed based on hydraulic geometry relations to estimate the discharge of a river in bank full state near Narok, Kenya. With the help of the Global Navigation Satellite System...
master thesis 2024
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van den Brand, Siebe (author)
It is observed that the bed level development of the Pannerden Canal (PC) and the Waal changed since the peak flows of 1993, 1995 and 1998. The erosion rate of the Pannerden Canal decreased greatly just downstream of the bifurcation while the erosion rate of the Waal stayed more or less constant. This leads to an increasing depth of the Waal...
master thesis 2024
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Klijn, F. (author)
The policy programme Integrated River Management (IRM) aims to anticipate climate change and to redress the negative consequences of earlier river engineering interventions. Its objective is to first and foremost ensure a well-functioning river system that can provide its essential ‘public’ geo-ecosystem services: safe discharge of floods,...
abstract 2024
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Mier Escurra, C. (author), Mor, A. R. (author), Luo, T. (author), Vaessen, P.T.M. (author)
The correct identification of partial discharges (PDs) is instrumental for the maintenance plan in gas-insulated systems (GIS). However, onsite PD measurements are difficult, especially in HVDC systems, where partial discharges can be confused with interference. This paper proposes a method to discern PDs from interferences based on the GIS...
journal article 2024
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Mier Escurra, C. (author), Mor, A. R. (author), Vaessen, P.T.M. (author)
This paper introduces a directional coupler for partial discharge (PD) measurements in gas-insulated substations (GIS). The sensor comprises a combination of magnetic and electric couplers, effectively segregating forward and backward pulses to enhance PD charge estimation and defect location. The sensor's design was supported with finite...
journal article 2024
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van Vliet, Lars (author)
The impact of climate change, particularly the rise in sea levels, obstructs the effectiveness of existing coastal structures. Additionally, climate change can also have an amplifying effect on wind speeds (Takagi & Esteban, 2013). Without proper control, the accumulation of changing environmental boundary conditions could lead to disastrous...
master thesis 2023
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Hiemstra, Jolijn (author), Streefkerk, Luuk (author), Okkerman, Jorrit (author), Rijsenbrij, Annabel (author), van Leeuwen, Jesse (author), Linnebach, Jonathan (author)
In a Ghana project, field measurements at the Black Volta aimed to enhance hydrological predictions for the Bui power dam. Validating devices and exploring floodplain contributions, such as with GNSS reflectometry and cameras, provides crucial insights for dam management and model improvement.<br/><br/>In this multidisciplinary project,...
student report 2023
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Taylor, Elizabeth (author)
Floods are the most frequent natural disaster and due to climate change the frequency and intensity of these events are increasing. Therefore, it is becoming increasingly important to obtain accurate estimations of extreme discharges. Statistical modelling is widely used to estimate extreme discharges by fitting observed extreme discharges to an...
master thesis 2023
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shah, shibanni (author)
Remotely operated vehicles (ROV) are used for the inspection, maintenance and repair of submarine and offshore cables, subsea exploration, and rescue operations. ROVs are powered by umbilical cables, which have to withstand electrical, mechanical, and thermal stresses. This thesis investigates the effect of repetitive bending on the insulation...
master thesis 2023
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LI, CHANGLIN (author)
There is a rising concern on the sustainability of Zero Liquid Discharge (ZLD) desalination. In this study, Multi-criteria Decision-making (MCDM) is applied to compare the sustainability performance of various ZLD scenarios, which is part of a Strong Sustainability (SS) assessment of desalination. ZLD desalination systems are considered to be...
master thesis 2023
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Chen, Y. (author), Castro Heredia, L.C. (author), Smit, J.J. (author), Ghaffarian Niasar, M. (author), Ross, Robert (author)
Partial discharges (PD) detection is an effective diagnostic method to assess the insulation condition of electrical power equipment in the high-voltage laboratory or field tests. This paper presents a non-contacting PD detection method for power equipment. The method is based on an extra high-sensitivity adapted giant magneto-resistive (xMR)...
journal article 2023
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Etemad-Shahidi, Amir (author), van Gent, M.R.A. (author)
Conventional rubble mound structures such as breakwaters, seawalls, and revetments are the most common type of coastal structures around the world used to protect harbour basins and embankments from wave action. To have a safe and economic design, two aspects need to be considered. The first one is the structural stability where the required...
conference paper 2023
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Garnacho, Fernando (author), Álvarez, Fernando (author), Elg, Alf Peter (author), Mier Escurra, C. (author), Lahti, Kari (author), Khamlichi, Abderrahim (author), Arcones, Eduardo (author), Klüss, Joni (author), Mor, A. R. (author)
On-site partial discharge (PD) measurements have turned out to be a very efficient technique for determining the insulation condition in high-voltage electrical grids (AIS, cable systems, GIS, HVDC converters, etc.); however, there is not any standardised procedure for determining the performances of PD measuring systems. In on-line and on...
journal article 2023
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Mier Escurra, C. (author), Mor, A. R. (author), Vaessen, P.T.M. (author), Lathouwers, A.G.A. (author)
One of the main difficulties in measuring partial discharges (PD) in gas-insulated substations (GIS) is the overlapping of pulses at the sensor's location, which distorts the pulse resolution and the charge estimation. This research presents a new method called “synergy,” which identifies and suppresses reflections using magnetic and electric...
journal article 2023
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Mier Escurra, C. (author), Mor, A. R. (author), Vaessen, P.T.M. (author)
Partial discharge (PD) measurements in gasinsulated substations (GIS) are tested according to the standard IEC 60270. This “conventional” PD test method applies to electrically small devices. The equipment size increases the resonance, and attenuation, contributing to the total uncertainty. Additionally, when an ultra-high frequency (UHF) sensor...
conference paper 2023
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Mier Escurra, C. (author), Khamlichi, Abderrahim (author), Dalstein, Matthieu (author), Vidal, Jose Ramon (author), Garnacho, Fernando (author), Mor, Armando Rodrigo (author), Vu-Cong, Thanh (author)
Driven by the voltage increase in high-voltage direct current (HVDC) gas-insulated substations (GISs), novel methods are needed for partial discharge (PD) detection and monitoring. This article shows a PD calibration method for very-high-frequency (VHF) magnetic and electric sensors in GIS. The calibration method uncertainty is tested in...
journal article 2023
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Pinto, Rose Boahemaa (author), Barendse, Tom (author), van Emmerik, Tim (author), van der Ploeg, Martine (author), Annor, F.O. (author), Duah, Kwame (author), Udo, Job (author), Uijlenhoet, R. (author)
Plastic pollution in rivers threatens ecosystems, increases flood risk due to its accumulations at hydraulic structures and its final emissions into the ocean threaten aquatic life, especially and probably most in coastal urbanized areas. Previous work suggests that plastic pollution in these urban rivers is influenced by hydrometeorological...
journal article 2023
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Li, Jiaguang (author), van der Vegt, Helena (author), Storms, J.E.A. (author), Tooth, Stephen (author)
Crevasse splays generate subtle local relief and contribute to fluvial basin sedimentary filling but controls on splay development along dryland rivers remain poorly understood owing to limited field, laboratory, and numerical modelling studies. Based on previously-acquired field data and new remote sensing observations of splay morphology...
journal article 2023
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Guo, Leicheng (author), Zhu, Chunyan (author), Cai, Huayang (author), Wang, Zhengbing (author), Townend, Ian (author), He, Qing (author)
River discharge is known to enhance tidal damping and tidal wave deformation in estuaries. While the damping effect on astronomical tides has been well documented, river impact on tidal wave deformation and associated overtide generation (shallow water harmonics of one or more astronomical constituents, such as M<sub>4</sub>) remains...
journal article 2023
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Vinke, Frederik R.S. (author), Turpijn, B. (author), van Gelder, P.H.A.J.M. (author), van Koningsveld, M. (author)
Inland shipping is a key modality for freight transport between the seaport of Rotterdam and the industrial areas in Germany and Switzerland. The recent droughts of 2018, 2019 and 2022 have clearly demonstrated how discharge related supply chain disruptions cause substantial economic damages in the hinterland. The IPCC predicts that climate...
journal article 2023
Searched for: subject%3A%22discharge%22
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