Comparison between three-capacitance, analytical-based and finite element analysis partial discharge models in condition monitoring

Illias, Hazlee Azil; Chen, G.; Lewin, P.L.

doi:10.1109/tdei.2016.005971

Cited by 56 publications

(38 citation statements)

References 46 publications

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“…Since the size of the triangular elements has substantial effect on the simulation time, the size of the triangular elements used was normal for air, finer for all domains of the model except for ZnO, which is extremely fine because it is the important element of the model. While constraining the potential on edges, it can produce a current outflow that is mesh-dependent [26][27][28][29]. The meshing elements of the surge arrester are shown in Figure 4.…”

Section: Finite Element Analysis (Fea) Leakage Current Modelmentioning

confidence: 99%

Measurement and Modelling of Leakage Current Behaviour in ZnO Surge Arresters under Various Applied Voltage Amplitudes and Pollution Conditions

et al. 2018

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In zinc oxide (ZnO) surge arresters, leakage current usually flows across the arrester under normal operating condition. Leakage current is one of the factors which contribute towards degradation of surge arresters and therefore, it is very important to monitor the condition of surge arrester. In this work, the behaviour of leakage current in a ZnO surge arrester during normal operation, under different voltage amplitudes, wetness and pollution conditions was analysed. An 11 kV surge arrester model in three-dimensional space was subjected to finite element analysis (FEA) to determine the leakage current under different conditions. The results from the FEA model were compared with the measurement results to validate the model that has been developed. From comparison between the measurement and simulation results, physical parameters of a surge arrester that influence the leakage current under different conditions of the surge arrester were identified from the model. Through this work, a better understanding of leakage current behaviour can be attained, which may help in condition monitoring analysis on surge arrester in electrical utilities.

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Section: Finite Element Analysis (Fea) Leakage Current Modelmentioning

confidence: 99%

Measurement and Modelling of Leakage Current Behaviour in ZnO Surge Arresters under Various Applied Voltage Amplitudes and Pollution Conditions

et al. 2018

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“…In order to model the PD activity in voids inside epoxy resins, there currently are models that can be classified as the following [15][16][17]:…”

Section: Introductionmentioning

confidence: 99%

Computer Simulation of Partial Discharges in Voids inside Epoxy Resins Using Three-Capacitance and Analytical Models

et al. 2020

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Epoxy resin is one of the most common polymers used as part of the insulation system in key electrical assets such as power transformers and hydrogenerators. Thus, it is necessary to know their main characteristics and to evaluate their condition when subjected to High Voltage (HV). A brief review of epoxy resins’ applications as insulating materials is made, their main characteristics as insulating media are given, the improvements with nano-fillers are summarized and the main electric properties required for Partial Discharges (PD) modelling are listed. In addition, the theoretical background and state-of-the-art of the three-capacitance and analytical models for simulating PD in solid dielectrics, such as epoxy resins, are reviewed in detail. Besides, their main advantages and disadvantages are presented, some critical arguments to the modelling procedure and assumptions are made and some improvements are proposed, taking into account conclusions made from other authors using models related to the PD development process. Finally, a case study was simulated using a modified three-capacitance model and the analytical model. The PD rate, q-φ-n diagrams and the minimum, mean and maximum PD electric charge are compared with measurements reported in the literature. Simulation results are in reasonable agreement with measured values. Capacitance models can be implemented in general purpose electric circuit simulation packages; however, its simulation is computationally expensive. Additional to this, although the modified three-capacitance model is not as accurate as finite elements or analytical models, results are also in agreement with real data.

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“…PD numerical modeling is a traditional topic, but many people are still trying their efforts to develop it now [11][12][13][14]. We try to summarize relevant researches in the past 30 years so as to inspire forthcoming studies.…”

Section: Introductionmentioning

confidence: 99%

Numerical modeling of partial discharges in a solid dielectric-bounded cavity: A review

Pan

Tang

2019

IEEE Trans. Dielect. Electr. Insul.

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Partial discharge (PD) taking place in a solid dielectric-bounded cavity involves physical processes such as free electron supply, discharge development and surface charge decaying, which bring about memory effects and become the main reasons for stochastic behavior of PDs. This paper reviews numerical modeling of cavity PD in the past 30 years. In the first place, physical processes relevant to PD activity are summarized, and modeling methods for discharge development are classified. Then some differences of PD modeling at AC and DC voltages are distinguished. Subsequently, reproducing methods from simulations to experiments are introduced, as well as their comparison under different conditions and with the emphasis on voltage frequency and PD aging. At last, some problems about current simulation models are discussed, and our suggestions for future work are proposed.

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Comparison between three-capacitance, analytical-based and finite element analysis partial discharge models in condition monitoring

Cited by 56 publications

References 46 publications

Measurement and Modelling of Leakage Current Behaviour in ZnO Surge Arresters under Various Applied Voltage Amplitudes and Pollution Conditions

Measurement and Modelling of Leakage Current Behaviour in ZnO Surge Arresters under Various Applied Voltage Amplitudes and Pollution Conditions

Computer Simulation of Partial Discharges in Voids inside Epoxy Resins Using Three-Capacitance and Analytical Models

Numerical modeling of partial discharges in a solid dielectric-bounded cavity: A review

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