Comparison of different test methods to assess the thermal stresses of metal oxide surge arresters under pollution conditions

Bargigia, A.; Nigris, M. de; Pigini, A.; Sironi, A.

doi:10.1109/61.180330

Cited by 11 publications

(9 citation statements)

References 4 publications

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“…The reason behind that can be attributed to the length of silicone rubber-housed SA, which is shorter than that of the polymeric-housed SA. From these results it could be concluded that the SiC porcelain-housed SA may degrade/age much quicker than the other SAs due to the heat build up inside, which may lead to thermal runaway for long-term operation, or at least there will be a significant reduction of their performance under transient overvoltages [3][4][5][6][7][8].…”

Section: Ac Internal Currentsmentioning

confidence: 99%

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Surge Arrester Performance Under AC Artificial Pollution and Impulse Conditions: A Comparative Investigation

Metwally

Gastli

Ahmed

et al. 2006

Electric Power Components and Systems

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This article presents a comparative experimental investigation of surge arrester (SA) performance under clean, unpolluted and polluted conditions. Three different surge arresters rated 33 kV and 10 kA were tested to investigate how the internal active material (either zinc oxide/metal oxide, ZnO, or silicone carbide, SiC) and the arrester housing material affect the overall performance under clean and pollution conditions. Both AC and impulse tests were conducted on SiC porcelain-, ZnO polymeric-, and ZnO silicone-rubber-(composite insulator) housed arresters. In the case of AC application, both the internal and the external currents were measured, while the discharge current is measured under impulse voltage application.

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Section: Ac Internal Currentsmentioning

confidence: 99%

“…The overvoltage protection of equipment containing non-self-restoring insulation is very dependent on the performance of SAs [3][4][5][6][7][8]. These must be capable of safely discharging surges so as to limit the overvoltage below the insulation level of the protected equipment.…”

Section: Introductionmentioning

confidence: 99%

Surge Arrester Performance Under AC Artificial Pollution and Impulse Conditions: A Comparative Investigation

Metwally

Gastli

Ahmed

et al. 2006

Electric Power Components and Systems

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“…For an MOA, zinc oxide (ZnO) varistors are the core components, and the V-I characteristics of ZnO varistors show temperature dependence under power frequency-applied voltages [7][8][9][10][11]. What's more, when an AC voltage is applied to a MOA, the resistive current flowing through the ZnO varistors can cause power loss, which may lead to temperature rise or thermal failure of the MOA [12][13][14][15]. Thus, in order to improve the thermal stability of MOAs, it is of great significance to study the interaction of MOAs' temperature and power loss characteristics under power frequency overvoltages.…”

Section: Introductionmentioning

confidence: 99%

Electro-Thermal Modeling of Metal-Oxide Arrester under Power Frequency Applied Voltages

Xie

Fang

et al. 2018

Energies

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Metal-oxide arresters (MOAs) are used to absorb the electrical energy resulting from overvoltages in power systems. However, temperature rises caused by the absorbed energy can lead to the electrothermal failure of MOAs. Therefore, it is necessary to analyze the electric and thermal characteristics of MOAs. In this paper, in order to study the electric and thermal characteristics of MOAs under power frequency voltage, an improved electrothermal model of an MOA is presented. The proposed electrothermal model can be divided into an electric model and a thermal model. In the electric model, based on the conventional MOA electric circuit, the effect of temperature on the voltage-current (V-I) characteristics of an MOA has been obtained. Using temperature and applied voltage as input data, the current flows through the MOA can be calculated using the artificial neural network (ANN) method. In the thermal model, the thermal circuit of a MOA has been built. The varistor power loss obtained from the electric model is used as input data, and the temperature of the zinc oxide varistors can be calculated. Therefore, compared with the existing MOA models, the interaction of leakage current and temperature can be considered in the proposed model. Finally, experimental validations have been done, and the electrothermal characteristics of an MOA have been studied by simulation and experimental methods. The electrothermal model proposed in this paper can assist with the prediction of the electric and thermal characteristics of MOAs.

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“…The effect of coupling in currents at the flange due to in homogeneously polluted housings can be avoided if the total varistor column is included in a single housing [2]- [4]. Another problem caused by pollution of MOAs is the partial discharge phenomena inside the MOSAs [3]. These discharges have been responsible for the destruction of a complete arrester [5] [6].…”

Section: Introductionmentioning

confidence: 99%

“…This may sometimes become serious in extreme pollution conditions. Formation of dry band on the housing may result in to [3]- [5]:  Increase in internal leakage current, causing local heating and thermal instability of varistors.  Puncture or crack on the surface.…”

Section: Introductionmentioning

confidence: 99%

Electrical Performance of Porcelain Surge Arrester in 22 kV Distribution System under Contaminated Conditions

Thipprasert¹,

Sritakaew²

2015

JPEE

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Stability and reliability of distribution system are able to be improved by many protective devices including insulators, relay and surge arrester (SA). SA is used for protection of lightning and switching surge in Provincial Electricity Au-thority (PEA). This paper presents an experimental investigation of 22 kV distribution SA electrical performances under pollution conditions according to IEC 60507. The experimental results of leakage currents more than 6 mA at Equiva-lent Salt Deposit Density (ESDD) 0.6 mg/cm 2 at nominal voltage. These data will be useful to be guideline for solving problems and reducing power loss from leakage current on the surface of SAs as a result of surface dirt and pollution. Moreover, it will be useful to select or design suitable SAs for using in places with salt conditions, high rainfall, high wind speeds and high humidity.

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Comparison of different test methods to assess the thermal stresses of metal oxide surge arresters under pollution conditions

Cited by 11 publications

References 4 publications

Surge Arrester Performance Under AC Artificial Pollution and Impulse Conditions: A Comparative Investigation

Surge Arrester Performance Under AC Artificial Pollution and Impulse Conditions: A Comparative Investigation

Electro-Thermal Modeling of Metal-Oxide Arrester under Power Frequency Applied Voltages

Electrical Performance of Porcelain Surge Arrester in 22 kV Distribution System under Contaminated Conditions

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