Sheath voltage calculations in long medium voltage power cables

Gouramanis, K.; Kaloudas, Ch. G.; Papadopoulos, Theofilos A.; Papagiannis, Grigoris K.; Stasinos, Konstantinos

doi:10.1109/ptc.2011.6019234

Cited by 25 publications

(13 citation statements)

References 5 publications

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“…The field experience and laboratory tests on zinc oxide SVLs for HV and EHV power cable were also treated [5]. Sheath voltage calculations were also performed for long MV cables in operational and fault conditions [7], [19]. In recent studies, simulation of transients were also compared with field tests [20], and on-line Partial Discharge detection and localization systems in cross-bonded HV cable systems were implemented [21].…”

Section: B Literature Analyses Of Cross-bonding Systemsmentioning

confidence: 99%

The Feasibility of Cable Sheath Fault Detection by Monitoring Sheath-to-Ground Currents at the Ends of Cross-Bonding Sections

Marzinotto

Mazzanti

2015

IEEE Trans. on Ind. Applicat.

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This paper aims at checking the chance that cable sheath faults in unipolar three phase HV and EHV cables with sheath cross-bonding systems can be detected by monitoring sheath-to-ground currents at the solid bonding ends of major cross-bonding sections. This goal is achieved by calculating such currents for some reference case-studies of faults of the outer thermoplastic jacket in unipolar three-phase land cables for power transmission in flat formation. The case-studies differ as to cable voltage ratings, resistance and location of the fault, symmetry of minor sections, number of major sections. The results show that the above chance does exist, particularly for some fault types and for sufficiently high cable load.

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Section: B Literature Analyses Of Cross-bonding Systemsmentioning

confidence: 99%

The Feasibility of Cable Sheath Fault Detection by Monitoring Sheath-to-Ground Currents at the Ends of Cross-Bonding Sections

Marzinotto

Mazzanti

2015

IEEE Trans. on Ind. Applicat.

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“…In literature, metallic sheath of high‐voltage cable is grounded to prevent cable faults and electroshock . Single‐point bonding, solid bonding, and cross bonding methods are used for grounding of metallic sheath according to IEEE 575‐1988 standard .…”

Section: Introductionmentioning

confidence: 99%

“…In literature, metallic sheath of high-voltage cable is grounded to prevent cable faults and electroshock. [6][7][8][9][10][11] Single-point bonding, solid bonding, and cross bonding methods are used for grounding of metallic sheath according to IEEE 575-1988 standard. [12][13][14][15] These methods are shown in Figures 5,6,and 7,respectively. However, transformer with star winding connection is used for transmission lines, and neutral point of transformer should be grounded for safety of transmission line.…”

mentioning

confidence: 99%

High‐voltage cable bonding to prevent cable termination faults based on zero‐sequence current

Akbal

2019

Int Trans Electr Energ Syst

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Summary Zero‐sequence current (ZC) occurs due to harmonics and unbalanced loading current. ZC increases the sheath voltage (SV) and cable temperature, so cable faults occur on cable terminations in high‐voltage underground cable lines (HVUCL). In literature, bonding methods are used to prevent ZC effects, but these methods are not adequate to prevent ZC effects for long HVUCL under high harmonic distortion because ZC is not considered when these methods are designed. In this study, the modified sectional solid bonding (MSSB) is suggested for long HVUCL that works under high harmonic distortion rate and unbalanced loading conditions. Namely, ZC is considered when MSSB is designed. MSSB parameters should be determined before HVUCL is installed for the most economical and practical bonding. SV of HVUCL should be known to determine MSSB parameters, so SV of HVUCL is forecasted by using adaptive network‐based fuzzy inference system (ANFIS), artificial neural networks (ANN), and hybrid ANN. Training and forecasting errors of hybrid ANN are less than ANFIS and ANN methods, so hybrid ANN methods are suggested to forecast SV of HVUCL. Also, MSSB parameters should be optimized, so optimization methods are used for optimization of MSSB. When MSSB method is used for bonding of long HVUCL, harmonic distortion rate and SV in cable terminations are not exceeded the determined limits to prevent cable faults.

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“…The sheath current of solid bonding method is less than cross bonding method. Also, sheath current of cross bonding is less than sheath current of solid bonding [6], [7]. Namely, these methods can be used according to problem.…”

Section: Introductionmentioning

confidence: 99%

GSA-ANN and DEA-ANN Methods to Prevent Underground Cable Line Faults

Akbal¹

2018

IJCEE

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Cable faults is an important issue for underground cable lines, and the sheath current is a major factor for cable faults. The sheath current occurs on metallic sheath of high voltage underground cable. Thus, metallic sheath of underground cable is grounded to prevent the sheath current faults. If the sheath current which will generate on metallic sheath, the most suitable grounding method can be selected to prevent the sheath current effects. In this study, artificial neural network (ANN) is used to determine the sheath current of underground cable line, and many simulation studies of the sheath current are made to obtain training data of ANN. Simulation studies of sheath current of different underground cable lines are made in PSCAD/EMTDC. Also optimization methods are used to update weights of ANN. Gravitational search algorithm (GSA) and differential evolution algorithm (DEA) are used to optimize weights of ANN. It is seen that training and forecasting errors of hybrid methods are lower than classic ANN.

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Sheath voltage calculations in long medium voltage power cables

Cited by 25 publications

References 5 publications

The Feasibility of Cable Sheath Fault Detection by Monitoring Sheath-to-Ground Currents at the Ends of Cross-Bonding Sections

The Feasibility of Cable Sheath Fault Detection by Monitoring Sheath-to-Ground Currents at the Ends of Cross-Bonding Sections

High‐voltage cable bonding to prevent cable termination faults based on zero‐sequence current

GSA-ANN and DEA-ANN Methods to Prevent Underground Cable Line Faults

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