Simulation modeling of polarization and depolarization current analysis for underground cable insulation

Sulaiman, Suhaila; Ariffin, Azrul Mohd; Kien, Do Trung

doi:10.1109/peoco.2013.6564572

Cited by 3 publications

(2 citation statements)

References 10 publications

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“…As a new testing method based on dielectric response principle, polarization and depolarization current (PDC) method is widely used in transformers, cables and other equipment because of its simple testing process and compact equipment [3][4][5]. Some scholars have explored the relationship between dielectric polarization time and temperature, and pointed out that with the rise of temperature, the polarization completion time will be shortened [6].…”

Section: Introductionmentioning

confidence: 99%

Influence of Cable Temperature Rise on PDC Method Test Results of Water Tree Aged Cables

Guo¹,

Wang²

2021

E3S Web Conf.

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There is a certain temperature rise in the field running cable because of the load bearing. To study the influence of cable temperature rise on the polarization and depolarization current (PDC) method, 10kV XLPE short cables were accelerated aging three months by water needle electrode method, and the PDC method was used to test the new and aged cables under constant humidity. The polarization and depolarization current of the cable samples was analyzed, and the conductivity and low frequency dielectric loss spectra were obtained and inspected. The results show that: in the experiment selected test temperature, the change laws of conductivity of the new and aged cables are the same, and the conductivity gradually rose after a slight drop in 40 °C; in the dielectric loss spectrum, the polarization of the new sample is low and the polarization loss changes little with temperature, and the dielectric loss is mainly affected by the conductivity, so the test result is clearly divided into two regions. And water tree aged samples have strong polarization and are obviously affected by temperature, so their low frequency dielectric loss showed the trend of first rising and then decreasing and the maximum appeared at 60 °C.

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Section: Introductionmentioning

confidence: 99%

Influence of Cable Temperature Rise on PDC Method Test Results of Water Tree Aged Cables

Guo¹,

Wang²

2021

E3S Web Conf.

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“…The interpretation of ageing conditions from XLPE cable conductivity values [19], [20] and comparison between PDC and DS techniques [18] to assess for XLPE cable degradations are beyond the scope of this paper and have been reported earlier.…”

Section: Introductionmentioning

confidence: 99%

Determining the Number of Parallel RC Branches in Polarization / Depolarization Current Modeling for XLPE Cable Insulation

Sulaiman¹,

Ariffin²,

Kien³

2017

International Journal on Advanced Science, Engineering and Information Technology

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An important element in the electric power distribution system is the underground cable. However continuous applications of high voltages unto the cable may lead to insulation degradations and subsequent cable failure. Since any disruption to the electricity supply may lead to economic losses as well as lowering customer satisfaction, the maintenance of cables is very important to an electrical utility company. Thus, a reliable diagnostic technique that is able to accurately assess the condition of cable insulation operating is critical, in order for cable replacement exercise to be done. One such diagnostic technique to assess the level of degradation within the cable insulation is the Polarization / Depolarization Current (PDC) analysis. This research work attempts to investigate PDC behaviour for medium voltage (MV) cross-linked polyethylene (XLPE) insulated cables, via baseline PDC measurements and utilizing the measured data to simulate for PDC analysis. Once PDC simulations have been achieved, the values of conductivity of XLPE cable insulations can be approximated. Cable conductivity serves as an indicator of the level of degradation of XLPE cable insulation. It was found that for new and unused XLPE cables, the polarization and depolarization currents have almost overlapping trendlines, as the cable insulation's conduction current is negligible. Using a linear dielectric circuit equivalence model as the XLPE cable insulation and its corresponding governing equations, it is possible to optimize the number of parallel RC branches to simulate PDC analysis, with a very high degree of accuracy. The PDC simulation model has been validated against the baseline PDC measurements.

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The classification of regular and defected low voltage XLPE cable by using polarization and depolarization current method

Singhasivanon

Manop

Pattanadech

et al. 2017

2017 International Electrical Engineering Congress (iEECON)

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Simulation modeling of polarization and depolarization current analysis for underground cable insulation

Cited by 3 publications

References 10 publications

Influence of Cable Temperature Rise on PDC Method Test Results of Water Tree Aged Cables

Influence of Cable Temperature Rise on PDC Method Test Results of Water Tree Aged Cables

Determining the Number of Parallel RC Branches in Polarization / Depolarization Current Modeling for XLPE Cable Insulation

The classification of regular and defected low voltage XLPE cable by using polarization and depolarization current method

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