Conferences related to Soil Thermal Resistivity

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2020 IEEE Power & Energy Society General Meeting (PESGM)

The Annual IEEE PES General Meeting will bring together over 2900 attendees for technical sessions, administrative sessions, super sessions, poster sessions, student programs, awards ceremonies, committee meetings, tutorials and more


2018 IEEE PES/IAS PowerAfrica

Power and Energy Systems

  • 2005 IEEE Power Engineering Society Inaugural Conference and Exposition in Africa

  • 2007 IEEE Power Engineering Society Conference and Exposition in Africa (PowerAfrica 2007)

    Covering all aspects of renewable energy development, large scale and peaking power generation, HVDC and HVAC transmission, distribution technologies, customer utilization and efficiencies, including automation, instrumentation, control, power electronics, machines, quality of supply, and protection.

  • 2012 IEEE Power & Energy Society Conference and Exposition in Africa: Intelligent Grid Integration of Renewable Energy Resources (PowerAfrica 2012)

    The world wide interest in the application of natural renewable energy resources, in energy conservation and increasing efficiency of energy application gathers momentum. This is driving fundamental change in the traditional electrical energy business of bulk power generation, bulk power transmission and power distribution. New and innoviative solutions emerge. This conference will focus on the experience of renewable energy applications.

  • 2015 IEEE PES PowerAfrica

    PowerAfrica 2015 Tunis will be a platform for participants from academia, electric utilities and industry to discuss experiences, best practices and associated technical developments that can be applied towards the electrification of Africa enabling socio-economic development. Power delivery regulations, investments and policies will also be addressed. PowerAfrica 2015 Tunis will cover keynotes, plenary sessions, paper and poster presentations, and tutorials by worldwide experts on power delivery with focus in Africa.

  • 2016 IEEE PES PowerAfrica

    PowerAfrica 2016 Livingstone will be a platform for participants from academia, electric utilities and industry to discuss experiences, best practices and associated technical developments that can be applied towards the electrification of Africa enabling socio-economic development. Power delivery regulations, investments and policies will also be addressed. PowerAfrica 2016 Livingstone will cover keynotes, plenary sessions, paper and poster presentations, and tutorials by worldwide experts on power delivery with focus in Africa.

  • 2017 IEEE PES/IAS PowerAfrica

    Power and Energy Systems


2018 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC)

This highly-regarded conference sponsored by IEEE’s Power & Energy Society aims to provide a premier platform for electrical engineers and scientists in universities, research centers and industry to present their works and to share experiences and ideas in the area of power and energy engineering. Attendees are provided with an unparalleled opportunity to interface with experts from all related fields including, but not limited to, power generation, power system management, power transmission and distribution, and smart grid technologies


2016 IEEE International Conference on Power and Energy (PECon)

The conference will cover a broad range of topics on Power Electronics and Drives and Power and Energy. These include, but are not limited to:Advanced Components and Enabling TechnologyComputer and AI Applications in Power EngineeringControl Electronics for Power ElectronicsElectrical Drives and TractionElectrical Machines and ActuatorsHigh Voltage and Power ModulatorsPower and Energy EducationPower Electronic ConvertersPower Electronic ApplicationsPower Quality, Protection and Electromagnetic CompatibilityPower System Dynamic, Stability and ControlPower System Planning and OperationRenewable Energy and Energy EfficiencySmart Grid and Utility ApplicationsTransmission and Distribution


2015 IEEE International Conference on the Properties and Applications of Dielectric Materials (ICPADM)

Latest research progress in electrical insulation and dielectric materials. Practical applications of these materials in electro-technology, particularly in power equipment and apparatus. Test, measurement, and diagnosis techniques.



Periodicals related to Soil Thermal Resistivity

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Industry Applications Magazine, IEEE

This magazine publishes articles concerning technical subjects and professional activities that are within the scope of IAS and are of interest to society members. The information includes but is not limited to articles, product reviews, book reviews, new standards, education information, announcements of conferences, workshops, new publications, committee meetings and reports of IAS activities.


Industry Applications, IEEE Transactions on

The development and application of electric systems, apparatus, devices, and controls to the processes and equipment of industry and commerce; the promotion of safe, reliable, and economic installations; the encouragement of energy conservation; the creation of voluntary engineering standards and recommended practices.


Instrumentation and Measurement, IEEE Transactions on

Measurements and instrumentation utilizing electrical and electronic techniques.


Power Delivery, IEEE Transactions on

Research, development, design, application, construction, the installation and operation of apparatus, equipment, structures, materials, and systems for the safe, reliable, and economic delivery and control of electric energy for general industrial, commercial, public, and domestic consumption.


Proceedings of the IEEE

The most highly-cited general interest journal in electrical engineering and computer science, the Proceedings is the best way to stay informed on an exemplary range of topics. This journal also holds the distinction of having the longest useful archival life of any EE or computer related journal in the world! Since 1913, the Proceedings of the IEEE has been the ...



Most published Xplore authors for Soil Thermal Resistivity

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Xplore Articles related to Soil Thermal Resistivity

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MV underground cables: Effects of soil thermal resistivity on anomalous working temperatures

2017 AEIT International Annual Conference, 2017

One of the parameters that has to be considered in designing underground cables is the thermal resistivity of the soil along their routes. In fact, the ampacity of the MV underground cables having different types of insulation is normally evaluated through the application of the IEC Standard 60287-x “Electric cables - Calculation of the current rating”. This series of IEC ...


The Effect of Underground Cable Diameter on Soil Drying, Soil Thermal Resistivity and Thermal Stability

2016 IEEE Green Technologies Conference (GreenTech), 2016

Heat generated by underground cables has been known to cause drying of the surrounding soil. This may change soil thermal resistivity sufficiently to cause cable overheating and subsequent failure. Methods have been used in the past to try to relate the time for soil to dry to the diameter of the cable. These existing methods were shown to be invalid ...


IEEE Guide for Soil Thermal Resistivity Measurements

IEEE Std 442-1981, 1981

A method for measurement of soil thermal resistivity that is based on the theory that the rate of temperature rise of a line heat source is dependent upon the thermal constants of the medium in which it is placed is given. This information will enable the user to properly install and load underground cables. The aim is to provide sufficient ...


Ampacity of MV underground cables: The influence of soil thermal resistivity

2015 5th International Youth Conference on Energy (IYCE), 2015

The thermal capacity of Medium Voltage underground cables depends on several factors, which include type and depth of installation, ambient temperature and thermal resistivity of the soil. In this contest, the thermal resistivity of the soil plays an important role and it is very sensitive to several parameters, like soil moisture and salts contents. This means that the thermal resistivity ...


Cable Ampacity Calculations: A Comparison of Methods

IEEE Transactions on Industry Applications, 2016

When designing electrical power systems, it is often necessary to determine underground cable ampacity. Various methods are in use today, including computer simulation, ampacity tables, and a method that has recently been suggested that includes the effects of moisture migration through soil. Each of these methods can yield substantially different ampacity results for the same installation. Regardless of the method, ...



Educational Resources on Soil Thermal Resistivity

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IEEE.tv Videos

IMS 2011 Microapps - Tools for Creating FET and MMIC Thermal Profiles
IMS 2012 Microapps - Electrical Thermal Coupled Solutions for Flip Chip Designs
IMS 2012 Microapps - Reducing Active Device Temperature Rise and RF Heating Effects with High Thermal Conductivity Low Loss Circuit Laminates
Micro-Apps 2013: Integrated Electro-Thermal Design of a SiGe PA
Indoor Vertical Farms: Growing Food Without Sun, Soil or Pesticides
On the Characterization of Thermal Coupling Resistance in a Current Mirror: RFIC Industry Showcase 2016
A Robot to Mine the Moon
IMS 2014: Out-of-Plane and Inline RF Switches based on Ge2Sb2Te5 Phase-Change Material
ISEC 2013 Special Gordon Donaldson Session: Remembering Gordon Donaldson - 7 of 7 - SQUID-based noise thermometers for sub-Kelvin thermometry
APEC 2011 Exhibitor Overview
ITRI: Technology Advances in Flexible Displays and Substrates
Hertz-Class Brillouin Lasing with Nanokelvin Thermal Sensing - William Loh - Closing Ceremony, IPC 2018
KeyTalk with Hamish Laird: The Gap Between Large Power Converters and Small Power Converters - APEC 2017
Winds of Change: Part 3 - Wind Energy in Developing Countries
Millimeter-Wave Bandpass Filter Using High-Q Conical Inductors and MOM Capacitors: RFIC Interactive Forum
Heterogeneous Photonic Packaging - John Osenbach - IPC 2018
Stochastic Single Flux Quantum Neuromorphic Computing using Magnetically Tunable Josephson Junctions - Stephen Russek: 2016 International Conference on Rebooting Computing
Low-energy High-performance Computing based on Superconducting Technology
Cryogenics for Applied Superconductivity - ASC-2014 Plenary series - 11 of 13 - Friday 2014/8/15
Next Generation Power Supplies - APEC 2016

IEEE-USA E-Books

  • MV underground cables: Effects of soil thermal resistivity on anomalous working temperatures

    One of the parameters that has to be considered in designing underground cables is the thermal resistivity of the soil along their routes. In fact, the ampacity of the MV underground cables having different types of insulation is normally evaluated through the application of the IEC Standard 60287-x “Electric cables - Calculation of the current rating”. This series of IEC Standard is formed of three parts as in the following: part 1: Formulae of ratings and power losses; part 2: Formulae for thermal resistance; part 3: Sections on operating conditions. In Italy, the current capacity of the same MV cables is established by the Italian Standard CEI-UNEL 35027 (2009) “Power cables with rated voltages from 1 kV to 30 kV - Steady state current ratings: cables laid in air and in ground”, which are based on the above mentioned IEC Standard. These thermal ampacities of the underground cables are function of ambient temperature and the thermal resistivity of the soil. The soil thermal resistivity is a parameter not easy to evaluate and for this reason, several times, only typical values are assumed just in function of the kind of the interested terrain (organic, loam, quartz sand, etc.). This assumption ignores the fact that the thermal resistivity varies continuously day by day especially in function of humidity soil content, being strongly dependent from this parameter. This paper describes as important differences of thermal resistivity may be present in consequence of seasonal variation in moisture content of the soil. It is also shown as such variations may cause important anomalous increases of cable maximum working temperature, which may be assumed to be at the origin of unexpected failures especially in correspondence of MV cable joints. In fact, the joints are, still today, the weakest points of the underground cables where the breakdown easily occurs due to poor workmanship, moisture ingress and thermal degradation. This thermal degradation may be also due to circulation of fault current in the metallic sheaths.

  • The Effect of Underground Cable Diameter on Soil Drying, Soil Thermal Resistivity and Thermal Stability

    Heat generated by underground cables has been known to cause drying of the surrounding soil. This may change soil thermal resistivity sufficiently to cause cable overheating and subsequent failure. Methods have been used in the past to try to relate the time for soil to dry to the diameter of the cable. These existing methods were shown to be invalid by former experiments. This paper presents the results of an experiment designed to determine if there is a relationship between the diameter of an underground cable and the time it takes soil to dry around that cable. The analysis of the results of the experiment suggested that there is such a relationship and the form that such a relationship may take.

  • IEEE Guide for Soil Thermal Resistivity Measurements

    A method for measurement of soil thermal resistivity that is based on the theory that the rate of temperature rise of a line heat source is dependent upon the thermal constants of the medium in which it is placed is given. This information will enable the user to properly install and load underground cables. The aim is to provide sufficient information to enable the user to select useful commercial test equipment, or to manufacture equipment that is not readily available on the market, and to make meaningful resistivity measurements with this equipment, in the field or on soil samples in the laboratory. Designs for both laboratory and field thermal needles are described.

  • Ampacity of MV underground cables: The influence of soil thermal resistivity

    The thermal capacity of Medium Voltage underground cables depends on several factors, which include type and depth of installation, ambient temperature and thermal resistivity of the soil. In this contest, the thermal resistivity of the soil plays an important role and it is very sensitive to several parameters, like soil moisture and salts contents. This means that the thermal resistivity may increase significantly along the route of the underground cable and in dependence with the different seasons of the year (meteorological conditions). Furthermore, as the moisture content of a soil increases its resistivity decreases.

  • Cable Ampacity Calculations: A Comparison of Methods

    When designing electrical power systems, it is often necessary to determine underground cable ampacity. Various methods are in use today, including computer simulation, ampacity tables, and a method that has recently been suggested that includes the effects of moisture migration through soil. Each of these methods can yield substantially different ampacity results for the same installation. Regardless of the method, using the correct value of soil thermal resistivity is critical and using the wrong value can result in cables that are incorrectly sized. This paper examines several commonly used methods and their underlying assumptions. Examples are provided to illustrate the differences in the results obtained from various methods and the consequences of using incorrect assumptions. It is hoped that these examples will provide guidance on the implementation of each method.

  • Frequency spectral analysis of electrical partial discharge signals in XLPE cable under various soil conditions

    As XLPE cables age, partial discharge (PD) testing on the cables has gained a lot of attention in the power utilities. This is because PD has been found to be a good indicator of the insulation health. In this research work, an experiment has been carried out in order to acquire electrical PD signals from an 11 KV, single-core 240 mm<sup>2</sup> XLPE cable. The operating conditions are varied using two parameters which are the soil thermal resistivity and cable loading in terms of core temperature. The analysis of PD signals has been commonly carried out in the time domain. However, in this paper, the analysis of PD signal patterns in an XLPE cable due to various soil conditions is performed in the frequency domain. As such, the time domain electrical PD signals from the PD measurement system are first transformed into frequency spectrum using fast Fourier transform (FFT). Then, the variations in the spectral content due to the changes in the soil condition at a fixed temperature of the cable are analyzed. From the results obtained, it is clearly evident that the changes in the soil thermal resistivity have significant effect on the spectral content of the PD signals.

  • Correction [to "Variable soil thermal resistivity - Steady-state analysis"]

    In the paper entitled "Variable Soil Thermal Resistivity - Steady-State Analysis," by J.V. Schmill, which appeared on pp. 215-223 of the February 1967 issue of this TRANSACTIONS, Fig. 6 of the discussion by A.F. Baljet appeared reversed in a number of copies of the issue.

  • Cable Ampacity Calculations: A Comparison of Methods

    When designing electrical power systems, it is often necessary to determine underground cable ampacity. Various methods are in use today including computer simulation, ampacity tables, and a method that has recently been suggested that includes the effects of moisture migration through soil. Each of these methods can yield substantially different ampacity results for the same installation. Regardless of the method, using the correct value of soil thermal resistivity is critical and using the wrong value can result in cables that are incorrectly sized. This paper examines several commonly used methods and their underlying assumptions. Examples are provided to illustrate the differences in the results obtained from various methods and the consequences of using incorrect assumptions. It is hoped that these examples will provide guidance on the implementation of each method.

  • Assessment of the influence of soil thermal resistivity on the ratings of distribution cables

    The paper summarises the findings of an extensive field investigation into the behaviour of soils affecting operation of buried power cables. Statistical treatment of the large volume of results available leads to the establishment of thermal-resistivity values for defined groups of soils and the main types of load encountered in practice.

  • Cyclic Loading of Underground Cables Including the Variations of Backfill Soil Thermal Resistivity and Specific Heat With Temperature Variation

    The aim of this paper is to calculate the temperature distribution of a cable conductor and the soil surrounding the cable under cyclic loading conditions, taking into account the formation of a drying zone in the backfill material. The thermal model of an underground cable is considered by using the IEC 60853-2 method, including the effects of the variations in temperature on the thermal resistivity and specific heat of the soil. The results are compared with IEC 60853-2 and thermoelectric equivalent method calculations. This study is done on eight sandy soil types as backfill materials, and calculations are carried out by using a 33-kVx cable. The results indicate that the modifications done on the IEC 60853-2 method are required to improve its capability to simulate the field conditions during load cycling of power cables.