Overview of simulation models for partial discharge and electrical treeing to determine feasibility for estimation of remaining life of machine insulation systems

Nyanteh, Yaw D.; Graber, Lukas; Edrington, Chris S.; Srivastava, Sanjeev; Cartes, D.A.

doi:10.1109/eic.2011.5996172

Cited by 17 publications

(17 citation statements)

References 32 publications

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“…The resistances in each link can also be obtained using equation (2) and breakdown occurs when thermal equilibrium is violated. Ignoring the thermal interactions, the compressive damage energy, D e (t), can be calculated at each time step of the simulation using equation (3) and illustrated in Figure 1. V(t) is the voltage across a link, V c is the voltage across the capacitance analogous to mechanical stresses with the link, R is the resistance across the link analogous to the thermal stresses in the link but ignored as explained earlier and dt is the time duration of a simulation time step.…”

Section: Modified Dielectrics Breakdown Modelmentioning

confidence: 99%

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A novel approach towards the determination of the time to breakdown of electrical machine insulating materials

Nyanteh

Graber

Srivastava

et al. 2015

IEEE Trans. Dielect. Electr. Insul.

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This paper presents new approach to using Partial Discharge (PD) data for the prediction of the Remaining Useful Life (RUL) of dielectric materials undergoing breakdown. The method presented uses a thermodynamic macro-model in conjunction with an artificial neural network to associate the features in the PD data detected during breakdown to the electrical tree characteristics. The method is presented using electrical tree simulation data from a new dielectric breakdown simulation model. The simulation model is confirmed using experimental data.

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Section: Modified Dielectrics Breakdown Modelmentioning

confidence: 99%

“…Simulation of partial discharge and electrical treeing has been carried out to understand these physical phenomena both using experimental and numerical simulation approaches [3][4][5][6][7]. With these models, factors that affect partial discharge and electrical treeing can be varied and effects studied.…”

Section: Introductionmentioning

confidence: 99%

A novel approach towards the determination of the time to breakdown of electrical machine insulating materials

Nyanteh

Graber

Srivastava

et al. 2015

IEEE Trans. Dielect. Electr. Insul.

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“…The original NPW model allows the simulation of electrical treeing patterns using several methodologies that includes finite element method, cellular automata etc. Several studies have been undertaken by researchers to match the figures obtained from electrical tree with those of the Lichtenberg figures, in addition to matching these with the fractal dimensions of electrical treeing that could have been produced experimentally in the laboratories as in [23].…”

Section: Niemeyer-pietronero-wisemann (Npw) Modelmentioning

confidence: 99%

A review on deterministic and stochastic models for electrical treeing initiation and propagation in solid insulation systems from the perspective of prediction assessment techniques

Balamurugan.¹,

Venkatesh²

2018

IJET

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Electrical treeing is a challenging prospect related to degradation mechanism in dielectrics that eventually leads to its breakdown. Treeing propagation depends on dielectric and electrode configuration thus leading to types such as branch, filamentary, bush etc. Though researchers have attempted a gamut of studies related to treeing, it is evident that appropriate choice of prognostic model is essential for prediction of ageing of insulation that emulate features such as dendrite length, channel width, space charge etc. Although studies related to treeing modeling have taken up depictions such as Diffusion Limited Aggregation, Field Limiting Space Charge etc. to obtain estimates of electric potential based on boundary value equations (Laplace and Poisson) utilizing tools such as Fractal Analysis, Cellular Automata etc., challenges such as space charge, inhomogeneity factor etc. continue to confront researchers. This research gives a detailed insight into a wide spectrum of studies related to treeing and ageing prediction assessment of insulation based on physical, electrical, numerical and analytical models developed thus far. This study also summarizes succinctly, the merits and limitations in each method and avenues for improvement. Finally, this research gives clues into important future opportunities related to methodologies for development pertaining to treeing prediction and ageing assessment.Recently the concept of CA has been effectively utilized by various researchers like [5]-[6], [11], [43]-[46] for their investigations related to the growth characteristics of electrical trees with distinct features of inclusion of dielectric inhomogeneity factor, effect of space charge, nano-composites etc. especially in case of solid dielectrics which are as specified in Table 6.

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“…The power system features a high power density, its architecture is MVDC, buses have short lengths, high intermeshing density, and wide adoption of power electronics. In addition, there are operational issues such as exceptionally high requirements for reliability and the ability for continuity of service during faults [4], [5].…”

Section: Introductionmentioning

confidence: 99%

Time and frequency domain methods to evaluate grounding strategies for medium voltage DC shipboard power systems

Graber

Steurer

Kvitkovič

et al. 2013

2013 IEEE Electric Ship Technologies Symposium (ESTS)

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Several key performance parameters of shipboard power systems are affected by the grounding scheme applied. The grounding scheme impacts the nature of voltage transients during switching events and faults, identifiability and locatability of ground faults, fault current levels, and power quality. Power system simulations play an important role in choosing an appropriate grounding scheme and optimizing its components. The tools typically used for power system analysis need to be carefully tested to determine if they are appropriate for modeling effects of different grounding schemes and in particular the high frequency transients. This paper sheds light on modeling and validation techniques specific to grounding models. Furthermore, insight is provided to present research into new types of power system modeling techniques based on scattering parameters for improved accuracy at higher frequencies of interest. A testbed designed to study the impact of different types of grounding schemes is also introduced and first characterization measurements in the frequency domain provided. The paper concludes with an outlook to future work, which will focus on rigorous validation of the models developed.

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Overview of simulation models for partial discharge and electrical treeing to determine feasibility for estimation of remaining life of machine insulation systems

Cited by 17 publications

References 32 publications

A novel approach towards the determination of the time to breakdown of electrical machine insulating materials

A novel approach towards the determination of the time to breakdown of electrical machine insulating materials

A review on deterministic and stochastic models for electrical treeing initiation and propagation in solid insulation systems from the perspective of prediction assessment techniques

Time and frequency domain methods to evaluate grounding strategies for medium voltage DC shipboard power systems

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