Relative Surface voltage Gradients of Grouped Conductors

Temoshok, M.

doi:10.1109/t-aiee.1948.5059864

Cited by 32 publications

(4 citation statements)

References 7 publications

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“…Electric field can be calculated using analytical and numerical methods. There are two types of analytical methods which are Maxwell Potential Coefficient Method [101], [102] and the extension of the Maxwell method, which is called Mark and Mengele's Method [103], [104]. These Maxwell equations for capacities are used to find the electrical charge for the conductor.…”

Section: Methods To Calculate and Measure Electric Field In Surroundimentioning

confidence: 99%

“…Typical fields are less than maximum fields because the current carried by a line is usually less than the theoretically calculated current. There are many other factors that affects the electric field from the line such as voltage level, amount of clearance, height of the first line to ground, phasing of each line, balancing between and within the circuit and ground resistivity [101].…”

Section: Efeh In Power Transmission Systemmentioning

confidence: 99%

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A Review of Energy Harvesting Methods for Power Transmission Line Monitoring Sensors

Yeesparan

Baharuddin

Din

et al. 2018

IJET

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Condition monitoring sensors have the responsibility of reducing occupational failures or unscheduled shutdowns especially in power transmission line systems. Existing sensors that are used for condition monitoring are mostly battery-dependent. Powering up these sensors in difficult to access areas where high voltage transmission line usually runs is a challenge because batteries usually have a limited life cycle. Power sources other than batteries such as harvesting from solar energy, magnetic energy, radio frequency energy either produces insufficient energy or not entirely available all the time. Electric Field Energy Harvesting (EFEH) overcomes many of these disadvantages and provides a quality and continuous power source to be used to power up devices especially the monitoring sensors that are used in transmission line monitoring. This paper presents key aspects and drawbacks of six types of energy harvesting methods and a review of existing energy harvesters. The concept of electric field and the usage of EFEH in power transmission line system are explained and a comparison between EFEH with typical energy harvesting methods is discussed. This paper finds that EFEH devices have potential to provide sufficient energy for low powered condition monitoring sensors. Moreover, several improved EFEH approaches are proposed, and future trends are discussed.

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Section: Methods To Calculate and Measure Electric Field In Surroundimentioning

confidence: 99%

Section: Efeh In Power Transmission Systemmentioning

confidence: 99%

A Review of Energy Harvesting Methods for Power Transmission Line Monitoring Sensors

Yeesparan

Baharuddin

Din

et al. 2018

IJET

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“…The application of multi-wire cages to highvoltage antennas and power distribution systems goes back many years. Early workers found that several wires together could carry more voltage than a single wire without corona (Clark, 1932;Temoshok, 1948;Adams, 1955;Miller, 1956Miller, , 1957.…”

Section: Multiple Wires (Cages) Above Groundmentioning

confidence: 99%

VLF/LF High-Voltage Design and Testing

Hansen¹,

Watt²

2003

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“…The calculation of surface gradients on overhead conductor dates back to the 1950s when Maxwell's Potential Matrix was first employed as an analytical tool [2]. Over the past 60 years, due to the increasing power of computers a number of numerical methods have been applied to this subject.…”

Section: Introductionmentioning

confidence: 99%

Calculating the Surface Potential Gradient of Overhead Line Conductors

Rowland

Shuttleworth

2015

IEEE Trans. Power Delivery

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the surface potential gradient is a critical design parameter for planning overhead lines, as it determines the level of corona loss (CL), radio interference (RI), and audible noise (AN). The majority of existing models for surface gradient calculation are based on analytical methods which restrict their application in simulating complex surface geometry. This article proposes a novel method which utilizes both analytical and numerical procedures to predict the surface gradient. With this effective model, stranding shape, protrusions, proximity of tower, type of tower, bundle spacing and bundle arrangement can be taken into consideration when calculating surface potential gradients. A sensitivity study on the factors could affect surface gradient distribution is performed.

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Relative Surface voltage Gradients of Grouped Conductors

Cited by 32 publications

References 7 publications

A Review of Energy Harvesting Methods for Power Transmission Line Monitoring Sensors

A Review of Energy Harvesting Methods for Power Transmission Line Monitoring Sensors

VLF/LF High-Voltage Design and Testing

Calculating the Surface Potential Gradient of Overhead Line Conductors

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