Electrical and thermal analysis of polymer insulator under contaminated surface conditions

Xu, Guoxiang; McGrath, P.B.

doi:10.1109/94.486781

Cited by 23 publications

(5 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This clearly shows that the resistance of the insulator surface is greatly reduced during wet conditions and the leakage current increases when it is resistive [10]. When the insulators are polished at a given high voltage, the conductivity of the surface where the electric field changes from capacitive to resistive [16]. Figure 12b shows the test of heavy polluted insulators at 70% RH, and temperature of 26 °C with a test voltage of 18 kV and the test time has taken about 40 minutes so that the surface of the insulator has dried which results in a leakage current of 4.2 mA.…”

Section: Results and Analysismentioning

confidence: 91%

“…Polymer insulators [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17] show several advantages over ceramic insulators [18][19][20][21][22][23][24][25][26][27][28][29][30][31] such as lowenergy surfaces that help to maintain hydrophobic surfaces. However, insulators in electricity transmission may not function properly even though the age of isolation is still within reasonable limits.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A leakage current estimation based on thermal image of polymer insulator

Darwison

Arief

Abral

et al. 2019

IJEECS

View full text Add to dashboard Cite

Polymer insulators tend to fail because of the climatic and environmental conditions. The failure occurs when the surface of insulator is contaminated by sea salt or cement dust which lead to partial discharge (PD). Leakage currents will increase by PD that causes deterioration of insulation. To predict the insulation failures, an adaptive neurofuzzy inference system (ANFIS) method using initial color detection processes are proposed to estimate the leakage currents based on the polymer insulator thermal images (infrared signature). In this study, the sodium chloride and kaolin are used as pollutants of the polymer insulator according to IEC 60507 standards. Then, the insulator is tested in the laboratory using AC high voltage applied at 18 kV where the temperature detection is controlled at 26° C and 70% RH (relative humidity). The percentage of colors (Red, Yellow, and Blue) from the thermal image is measured using the color detection method. Correspond to the color percentage, the ANFIS method predicts leakage currents from polymer insulators. Furthermore, this system interprets measured data from insulators that need to be categorized as Safe, Need Maintenance or Harmful. The final application of the system can be a non-contact tool to predict the polymer insulators used by technicians in the field.

show abstract

Section: Results and Analysismentioning

confidence: 91%

Section: Introductionmentioning

confidence: 99%

A leakage current estimation based on thermal image of polymer insulator

Darwison

Arief

Abral

et al. 2019

IJEECS

View full text Add to dashboard Cite

show abstract

“…By considering temperature change by solar radiation & wind negligible. A past study indicates that the highest temperature of an insulator is about 50 0 C in most cases when being directly exposed to the sun (Guoxiang Xu & P. B. McGndh, 1996). The maximum temperature is shown at the pin and space between the porcelain and distribution of temperature shown over the other part of the insulator assembly gradually decreases as shown in Figure 6 indicating that most of the heat generated by conductor in the pin is dissipated by convection and radiation.…”

Section: Figure 5 Loading and Boundary Condition Model Of Insulator A...mentioning

confidence: 93%

“…Guoxiang Xu and P. B. McGndh, (1996) have presented the results of the simulation of electrical and thermal performance of a contaminated polymer insulator. The electric field is determined by using the finite element method (FEM) technique, while the temperature distribution along the insulator surface is calculated by solving the heat transfer differential equation numerically with the aid of the finite difference method (FDM).…”

Section: Introductionmentioning

confidence: 99%

Coupled Field Thermoelectric Simulation of High Voltage Ceramic Cap and Pin Disc Type Insulator Assembly

Palhade¹,

Tungikar²,

Dhole³

et al. 2014

International Journal of Manufacturing, Materials, and Mechanical Engineering

View full text Add to dashboard Cite

Transmission of high power at high voltages over very long distances has become very imperative. At present, throughout the globe, this task performed by overhead transmission lines. The dual task of mechanically supporting and electrically isolating the live phase conductors from the support tower is performed by insulators. The electrical potential, field and temperature distribution along the insulators governs the possible effects, which is quite detrimental to the system. However, a reliable data on electrical potential, field and temperature distribution in commonly employed insulators are rather scarce or access individually for thermal or electrical load only. Considering this, the present work has made an attempt to study accurately, thermal and electrical characteristics of 11 kV single cap and pin type ceramic disc distribution insulator assembly used for high voltage transmission. The coupled field thermo electrical finite element by using commercially available FEM software Ansys-11 is employed for the required field computations. This new set of ANSYS coupled-field elements enables users to accurately and efficiently analyze thermoelectric devices. This paper review the finite element formulation, which in addition to Joule heating, includes Seebeck, Peltier, Thomson effects and electrical load, i. e. by considering thermal and electric loads acting simultaneously. The Electrical voltage, electrical field and temperature distribution is deduced and compared with various other/individual analyses.

show abstract

“…Then, the present of the contaminant inside the layer will create leakage current on the insulator surface [11]. The contaminant layer accu mulat ion at the surface of the insulator will increase the leakage current in wh ich causes flashover voltage and give damage to insulator [12].…”

Section: Introductionmentioning

confidence: 99%

The Performance of High Voltage Insulator Based on Epoxy-Polysiloxane and Rice Husk Ash Compound in Tropical Climate Area

Jaya¹,

Berahim²,

Tumiran³

et al. 2012

EEE

View full text Add to dashboard Cite

This paper presents the effect of natural aging upon the performance of the poly meric insulat ion materials made fro m Epo xy resins, Polydimethylsilo xane (PDMS), and Rice husk ash compound. The sa mples of epo xy resin insulation material consist of Dig lycidyl Ether of Bisphenol A (DGEBA ), Meta Phenylene Diamine (MPDA) as curing agent, and 325 mesh Rice Husk Ash (RHA) as filler, treated with variat ion of PDMS content. The research aims are to observe the Equivalent Salt Deposit Density (ESDD), crit ical leakage current, and flashover voltage on the insulation material surface that has undergone a natural aging. Experimental method was carried out through the following procedure. The samples were placed outdoor for natural aging test, outside the building of electrical engineering and informat ion technology of Gadjah Mada University in Indonesia. Then the ESDD, crit ical leakage current, flashover voltage on the sample surface was measured every 2 weeks. The experiment results show that the performance of insulator material fluctuates during 52 weeks. The higher PDMS with RHA filler content the lower ESDD and surface leakage current. Furthermore the flashover voltage increases.

show abstract

Electrical and thermal analysis of polymer insulator under contaminated surface conditions

Cited by 23 publications

References 6 publications

A leakage current estimation based on thermal image of polymer insulator

A leakage current estimation based on thermal image of polymer insulator

Coupled Field Thermoelectric Simulation of High Voltage Ceramic Cap and Pin Disc Type Insulator Assembly

The Performance of High Voltage Insulator Based on Epoxy-Polysiloxane and Rice Husk Ash Compound in Tropical Climate Area

Contact Info

Product

Resources

About