Effects of Thermal Cycles on Interfacial Pressure in MV Cable Joints †

The use of medium voltage cable joints is mandatory when dealing with power cable faults and the installation of new lines. However, such an accessory is among the top causes of faults among the grid. To this purpose, one of the quantities monitored to understand the causes of such faults is the interfacial pressure between the insulating layers of the cable joint. In this work, the interfacial pressure between Cross-linked polyethylene (XLPE) and silicon rubber has been evaluated when the cable joint experiences thermal cycles. From the results, the pressure variation caused by the thermal cycles is demonstrated. Such a phenomenon may be connected to the generation of voids and weak spots that accelerate cable joint ageing. Therefore, proper comments and conclusions are drawn.

[1]  Hae-Jong Kim,et al.  Electrical and Mechanical Characteristics of Insulating Materials for HTS DC Cable and Cable Joint , 2015, IEEE Transactions on Applied Superconductivity.

[2]  Man Xu,et al.  Temperature Dependence of Mechanical, Electrical Properties and Crystal Structure of Polyethylene Blends for Cable Insulation , 2018, Materials.

[3]  N. Amyot,et al.  A study of interfacial pressure behavior for two types of thermally cycled coldshrinkable joints , 2002, Conference Record of the the 2002 IEEE International Symposium on Electrical Insulation (Cat. No.02CH37316).

[4]  Martin D. Judd,et al.  High voltage insulator contamination level online monitoring with conventional and novel methods , 2016, 2016 IEEE Electrical Insulation Conference (EIC).

[5]  Ke Wang,et al.  On-Line Detection of Voltage Transformer Insulation Defects Using the Low-Frequency Oscillation Amplitude and Duration of a Zero Sequence Voltage , 2019 .

[6]  P.H.F. Morshuis,et al.  Influence of ambient temperature on the failure behavior of cable joints , 2007, 2007 Annual Report - Conference on Electrical Insulation and Dielectric Phenomena.

[7]  Liu Gang,et al.  Error analysis of capacitor voltage transformer in the operation environment , 2016, 2016 IEEE International Conference on High Voltage Engineering and Application (ICHVE).

[8]  Jiangjun Ruan,et al.  Real-Time Temperature Estimation of Three-Core Medium-Voltage Cable Joint Based on Support Vector Regression , 2018, Energies.

[9]  Donald M. Hepburn,et al.  On-line PD detection and localization in cross-bonded HV cable systems , 2014, IEEE Transactions on Dielectrics and Electrical Insulation.

[10]  Lorenzo Peretto,et al.  Effects of Temperature on MV Cable Joints Tan Delta Measurements , 2019, IEEE Transactions on Instrumentation and Measurement.

[11]  Guoqing Li,et al.  A Novel Method for PD Feature Extraction of Power Cable with Renyi Entropy , 2015, Entropy.

[12]  Lorenzo Peretto,et al.  Low-Cost Monitoring Unit for MV Cable Joints Diagnostics , 2018, 2018 IEEE 9th International Workshop on Applied Measurements for Power Systems (AMPS).

[13]  Lorenzo Peretto,et al.  Effect of temperature on the accuracy of inductive current transformers , 2018, 2018 IEEE International Instrumentation and Measurement Technology Conference (I2MTC).

[14]  Xiaomin Xiang,et al.  Application of fiber Bragg grating sensor in temperature monitoring of power cable joints , 2011, 2011 International Conference on Electronics, Communications and Control (ICECC).

[15]  B. X. Du,et al.  Fundamental research on dielectric breakdown between XLPE and silicon rubber interface in HV cable joint , 2009, 2009 IEEE 9th International Conference on the Properties and Applications of Dielectric Materials.

[16]  Avinash Raj,et al.  Extraction of cable joints tangent delta from bulk tangent delta measurement using HFAC method , 2016, 2016 IEEE International Conference on Power and Energy (PECon).

[17]  P. Heuillet,et al.  Study of the viscoelastic behavior of cold-shrinkable joints for MV cables , 1999, 1999 IEEE Transmission and Distribution Conference (Cat. No. 99CH36333).

[18]  Lorenzo Peretto,et al.  Assessment of Metrological Characteristics of Calibration Systems for Accuracy vs. Temperature Verification of Voltage Transformer , 2017, 2017 IEEE International Workshop on Applied Measurements for Power Systems (AMPS).

[19]  Jian Di,et al.  Technical trends of intermediate joints for HV XLPE cable in China , 2017, 2017 4th IEEE International Conference on Engineering Technologies and Applied Sciences (ICETAS).

[20]  C. Katz,et al.  Low temperature aging of XLPE and EP insulated cables with voltage transients , 1995 .

[21]  S. Dalai,et al.  Condition monitoring of 11kV porcelain pin insulator extracting surface current from total leakage current , 2017, 2017 3rd International Conference on Condition Assessment Techniques in Electrical Systems (CATCON).

[22]  N. Amyot,et al.  Diagnostic of overheating underground distribution cable joints , 2001 .

[23]  M. Chaaban,et al.  Thermal performance modeling of power cable joints , 1993 .

[24]  Lorenzo Peretto,et al.  Test Setup Design, and Calibration for Tan Delta Measurements on MV Cable Joints , 2018, 2018 IEEE 9th International Workshop on Applied Measurements for Power Systems (AMPS).

[25]  Alberto Geri,et al.  Thermal Effects of Ground Faults on MV Joints and Cables , 2019, Energies.

[26]  Zhidong Jia,et al.  Calculation and simulation of mechanical pressure of XLPE-SR surface in cable joints , 2018, 2018 12th International Conference on the Properties and Applications of Dielectric Materials (ICPADM).

[27]  T. Leibfried,et al.  A High-Frequency Simulation Model of a MV Cable Joint , 2018, 2018 International Conference on Diagnostics in Electrical Engineering (Diagnostika).

[28]  Joni Kluss,et al.  Test setup for measuring medium voltage power cable and joint temperature in high current tests using thermocouples , 2016, 2016 IEEE Electrical Insulation Conference (EIC).

[29]  Ouyan Jiankun,et al.  Overhead line monitoring model based on the long-distance transmission network , 2013, 2013 8th International Conference on Computer Science & Education.

[30]  B. Rajalakshmi,et al.  Analysis of Partial Discharge in underground cable joints , 2015, 2015 International Conference on Innovations in Information, Embedded and Communication Systems (ICIIECS).

[31]  Lorenzo Peretto,et al.  Effects of Mechanical Pressure on the Tangent Delta of MV Cable Joints , 2019, IEEE Transactions on Instrumentation and Measurement.

[32]  A.A. Shilin,et al.  Intelligent Reflectometer for Monitoring Overhead Power Lines , 2018, 2018 International Conference on Industrial Engineering, Applications and Manufacturing (ICIEAM).

[33]  Lorenzo Peretto,et al.  Test Bed Characterization for the Interfacial Pressure vs. Temperature Measurements in MV Cable-Joints , 2019, 2019 II Workshop on Metrology for Industry 4.0 and IoT (MetroInd4.0&IoT).

[34]  Chandan Kumar Chakrabarty,et al.  Tangent delta extraction of cable joints for aged 11kV underground cable system , 2016, 2016 International Conference on Advances in Electrical, Electronic and Systems Engineering (ICAEES).

[35]  Maria Gabriella Masi,et al.  Toward a BITE for Real-Time Life Estimation of Capacitors Subjected to Thermal Stress , 2011, IEEE Transactions on Instrumentation and Measurement.

[36]  S. Dalai,et al.  Condition monitoring of overhead line insulator by measuring surface leakage current , 2014, 2014 Annual IEEE India Conference (INDICON).