Browsing NTNU Open by Author "Meyer, Hans Kristian Hygen"
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Breakdown Mechanisms of Rod-Plane Air Gaps with a Dielectric Barrier Subject to Lightning Impulse Stress
Meyer, Hans Kristian Hygen; Mauseth, Frank; Pedersen, Per Atle; Ekeberg, Jonas (Journal article; Peer reviewed, 2018)The complexity of gas-insulated substations makes it difficult to predict withstand voltages. Modeling interaction between dielectric surfaces and electrical discharges is a key challenge. In this study, 60 mm rod-plane ... -
Charge accumulation on slightly conductive barrier systems and its effect on breakdown voltage in an air insulated rod plane arrangement
Schueller, M.; Blaszczyk, Andreas; Mauseth, Frank; Meyer, Hans Kristian Hygen; Stieger, N.; Smajic, J. (Chapter, 2020)The barrier effect has been known since the 1930's. It is of great importance in the field of high voltage engineering as the breakdown voltage of an electrode arrangement can be increased significantly when dielectric ... -
Development of Test Methods for a Combined DC Power and Fiber Optic Deep Water Subsea Cable - Effect of DC Pre-stress on AC Withstand Strength
Meyer, Hans Kristian Hygen (Master thesis, 2015)Repeatered fiber optic submarine cables require a very high reliability. The cables operate at a voltage of 10 kV DC to supply electrical power to the repeaters that are placed every 50-70 km along the cable to amplify the ... -
Dielectric barriers under lightning impulse stress: Breakdown and discharge-dielectric interaction in short non-uniform air gaps
Meyer, Hans Kristian Hygen (Doctoral theses at NTNU;2019:106, Doctoral thesis, 2019)Dielectric-air insulation systems can reduce the carbon footprint of medium voltage switchgear, as they can replace SF6-insulated systems. Such replacement is, however, not easy, as the devices are typically compact and ... -
Effect of Filling Pressure on Post-Arc Gap Recovery of N2
Abid, Fahim; Niayesh, Kaveh; Viken, Egil; Støa-Aanensen, Nina Sasaki; Jonsson, Erik; Meyer, Hans Kristian Hygen (Peer reviewed; Journal article, 2020)Experimental investigation of the effect of filling pressure on the post-arc dielectric recovery characteristics of nitrogen is reported in this paper. A half-cycle arc current duration of 540 μs followed by a 10 kV pulse ... -
Evolution of positive streamers in air over non-planar dielectrics: experiments and simulations
Meyer, Hans Kristian Hygen; Marskar, Robert; Mauseth, Frank (Peer reviewed; Journal article, 2022)We study positive streamers in air propagating along polycarbonate dielectric plates with and without small-scale surface profiles. The streamer development was documented using light-sensitive high-speed cameras and a ... -
Investigation of Partial Discharges in AlN Substrates under Fast Transient Voltages
Semenov, Ivan; Gunheim, Ingrid Folkestad; Niayesh, Kaveh; Meyer, Hans Kristian Hygen; Lundgaard, Lars Esben (Peer reviewed; Journal article, 2022)The objective of this paper is to characterize partial discharge (PD) inception voltages and patterns at sinusoidal and square voltages in insulating ceramic substrates with generic manufacturing defects. PD tests were ... -
New Environmentally-friendly Insulation Gases: Breakdown Mechanisms along Insulating Cylinders when implementing Barriers and Triple Junction Gaskets
Osberg, Helene Grimstad (Master thesis, 2023)SF6 er en kraftig drivhusgass, som benyttes i mellomspennings gasisolerte koblingsanlegg. Det er sannsynlig at SF6 kommer til å bli strengere regulert i fremtiden. Nye miljøvennlige isolasjonsajonsgasser, som trykksatt ... -
New Environmentally-friendly Insulation Gases: Pre-breakdown and Breakdown Mechanisms near Insulating Surfaces under Fast Voltage Impulses
Nessa, Stian (Master thesis, 2022)Med det nåværende presset for å fase ut SF6, er det nødvendig med nye design av høyspentutstyr for å minimere konsekvensene av overgangen til mer miljøvennlige isolasjonsgasser. For å oppnå dette kreves en dypere forståelse ... -
New Environmentally-friendly Insulation Gases: Pre-breakdown Mechanisms under Impulse Voltage in Synthetic Air and AirPlus
Bratland, Fredrik Leonardie (Master thesis, 2022)Med økende fokus på miljøvennlige løsninger i energi-industrien er det et ønske om å redusere den nåværende bruken av SF6 som isolasjonsgass. SF6 har utmerkede dielektriske egenskaper, noe som gjør det til en nær perfekt ... -
On-line Condition Assessment of 420 kV Terminations - design and development of partial discharge sensors
Turi, Bjørnar Hætta (Master thesis, 2023)En kabelterminering er en nødvendig komponent når man går fra en kabel til et annet apparat i kraftsystemet. Det har derimot vist seg at kabeltermineringer er mer utsatt for feil enn kabelen i seg selv, mest fordi den ... -
On-line Condition Assessment of 420 kV Terminations - design and development of PD sensors
Høigård, Elise Tajet (Master thesis, 2022)Termineringer er ansett som et svakt punkt i transmisjonsnettet, og industrien erfarer at dårlig terminering er en av hovedgrunnene til feil i kabelsystemer. Partielle utladninger som en konsekvens av hulromsdannelse i ... -
Pre-Breakdown Phenomena in Technical Air with and without C5-Fluoroketone for a Rod-Plane Gap
Skirbekk, Fanny; Mauseth, Frank; Meyer, Hans Kristian Hygen (Journal article; Peer reviewed, 2022)alternatives to the potent greenhouse gas SF6 in medium voltage (MV) gas insulated switchgear. MV products using this gas mixture are already commercially available, but there is still a lack of knowledge about this gas ... -
Streamer and surface charge dynamics in non-uniform air gaps with a dielectric barrier
Meyer, Hans Kristian Hygen; Marskar, Robert; Blaszczyk, Andreas; Mauseth, Frank; Pedersen, Per Atle (Journal article; Peer reviewed, 2019)Streamer behaviour near dielectric surfaces is an important characteristic of air-solid electrical insulation systems. Accurate predictions are important for dielectric design, but dynamic aspects such as surface charging ... -
Streamer propagation along a profiled dielectric surface
Meyer, Hans Kristian Hygen; Marskar, Robert; Gjemdal, Henrik; Mauseth, Frank (Peer reviewed; Journal article, 2020)We investigate the propagation of positive streamers along a profiled dielectric surface in air at atmospheric pressure. Results from experiments and two-dimensional planar low-temperature plasma fluid simulations are ... -
Streamer Propagation along Profiled Insulator Surfaces under Positive Impulse Voltages
Meyer, Hans Kristian Hygen; Marskar, Robert; Bilsbak, Henriette Graverholt; Mauseth, Frank; Schueller, Michael (Peer reviewed; Journal article, 2022)Controlling discharge growth on insulator surfaces is important in high voltage gaseous insulation systems. In this study, the effect of small-scale surface profiles on streamer discharge propagation is examined experimentally. ... -
Surface charging formulations for engineering applications: Validation by experiments and transient models
Blaszczyk, Andreas; Christen, Thomas; Meyer, Hans Kristian Hygen; Schueller, Michael (Chapter, 2020)Electrostatic BEM (Boundary Element Method) formulations are presented for the calculation of dielectric surface charging, including saturation and restrike phenomena. The simulation results turn out to be in agreement ... -
Surface charging of dielectric barriers in short rod-plane air gaps – experiments and simulations
Meyer, Hans Kristian Hygen; Blaszczyk, Andreas; Schueller, Michael; Mauseth, Frank; Pedersen, Per Atle (Chapter, 2018)Surface charge on dielectric surfaces can alter the field conditions of insulation systems substantially. In this work, lightning impulse experiments are compared with a simulation model for surface charging in rod-barrier-plane ... -
Surface Flashover over a Micro-Profiled Cylinder in Air
Meyer, Hans Kristian Hygen; Marskar, Robert; Osberg, Helene; Mauseth, Frank (Peer reviewed; Journal article, 2023)Increasing the lightning impulse (LI) flashover voltage of insulators can require significant changes to the geometry and material properties of the insulator or electrodes. In some cases, such changes can be difficult to ...