New live line tester for porcelain suspension insulators on high-voltage power lines

Vaillancourt, G.H.; Bellerive, J.P.; St-Jean, M.; Jean, Charles

doi:10.1109/61.277692

Cited by 82 publications

(27 citation statements)

References 4 publications

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“…6 and Fig.7 show the equipotential and bulk/volume stress for the same string. Authors [8][9][10] have studied strings containing faulty discs, to understand further, simulation study is extended by creating the faults at various locations in the string. The comparison of surface electric stress with 2 nd , 3 rd and 4 th discs faulty is presented in Fig.…”

Section: Simulation Results and Discussionmentioning

confidence: 99%

Performance Analysis of 1200kV Ceramic Disc Insulator String under Normal and Faulted Conditions

2015

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In the recent years there has been a considerable increase in demand for the electrical power requirement in our country. Presently the transmission system voltages has increased to 765 kV ac and 800kV dc, keeping in view of the future demand experimentation and simulation studies for 1200 kV ac and 1100kV dc transmission are under progress. In the present study an attempt is made to compute the surface potential, electric field across the string of ceramic disc insulators used for 1200kV ac systems. The studies are carried out under normal, polluted conditions and for the case of insulator string containing faulty discs. A computer code using surface charge simulation method (SCSM) is developed for the present analysis. Also a new technique which enhances the surface potential and electric field strength for the existing ceramic disc insulators is presented.

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Section: Simulation Results and Discussionmentioning

confidence: 99%

Performance Analysis of 1200kV Ceramic Disc Insulator String under Normal and Faulted Conditions

2015

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“…The humidity data were acquired via thermo-hydrostat program control with an oscilloscope in real time [5,6]. It also increased to 70[%] within 0.5-1 hour, and was maintained for 2 hours.…”

Section: Experimental Methods and Conditionsmentioning

confidence: 99%

A Study on Salt Damage Pollution Forecasting by Measuring Leakage Current

Lee¹,

Hyun²,

Kim³

2010

Journal of the Korean Institute of Illuminating and Electrical

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Faults due to salt damage prevent the provision of stable power supply because they affect large areas and require much time and man power for recovery. Korea, three sides of which are surrounded by sea, is especially exposed to the impact of sea winds and typhoons. Therefore, salt damage to power facilities is one of the greatest problems of Korea's power system. To prevent salt damage pollution of insulators, the salt damage deposit on the insulators is regularly measured, and the insulators are washed when their salt damage deposits are expected to reach a critical level. When salt is detected on the insulators, however, errors are likely to occur according to different workers and environments. Therefore, a leakage current measurement method was proposed in this study to check the salt damage pollution level and reduce these errors.

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“…Finally, the last method developed consists in measuring the distribution of the electric field using a specific E-field probe initially developed by Hydro-Quebec for ceramic insulator [9][10][11][12]. This detection method measures the local distortion of the E-field distribution produced by the presence of the conductive defects.…”

Section: Introductionmentioning

confidence: 99%

New method for in live-line detection of small defects in composite insulator based on electro-optic E-field sensor

Volat

Jabbari

Farzaneh

et al. 2013

IEEE Trans. Dielect. Electr. Insul.

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Preliminary results based on experimental tests in laboratory and numerical investigation concerning the live-line detection of a conductive defect in HV composite insulator are depicted.The proposed method is based on E-field sensing using a non-invasive and compact pigtailed electro-optic (EO) single-ended probe. Measurements and numerical FEM modeling were done on a clean dead-end 28 kV composite insulator on which conductive defects of different size and position were simulated. Based on these simulations, the optimal location and orientation of the EO probe were determined regarding the conductive defect length and position. Laboratory tests were performed to validate these results and demonstrate the efficiency of the new detection method. The experimental results have demonstrated that using the optimal EO probe orientation, the E-field sensor was able to detect and locate conductive defect as short as 15 mm × 1 mm in contact with the HV electrode and of 26 mm × 2 mm between sheds. Moreover, the experimental tests have demonstrated the ability of the EO sensor to detect the presence of corona discharges induced by the conductive defects.Index Terms -Composite insulator, defect detection, E-field field sensor, Electrooptic probe, FEM simulations.

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New live line tester for porcelain suspension insulators on high-voltage power lines

Cited by 82 publications

References 4 publications

Performance Analysis of 1200kV Ceramic Disc Insulator String under Normal and Faulted Conditions

Performance Analysis of 1200kV Ceramic Disc Insulator String under Normal and Faulted Conditions

A Study on Salt Damage Pollution Forecasting by Measuring Leakage Current

New method for in live-line detection of small defects in composite insulator based on electro-optic E-field sensor

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