RESEARCH PAPERS

underground cable research papers




Mobile monitoring of underground cable systems
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Due to the deregulation policy introduced into power market, utilities are market players now, no longer as monopolies. From the perspective of utilities, the ideal power network should work continuously and without failures. In reality, it is not possible, but the ideal can 

'Murray Link-The longest underground HVDC cable in the world'
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The Murraylink Transmission Company Ltd (MTC) awarded a contract in December 2000 for the turnkey engineering, procurement and construction of the Murraylink Transmission Interconnection Project in Australia. The contract included two complete AC/DC converter 

Field studies of incipient behavior in damaged underground cable
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ABSTRACT The need of a reliable and inexpensive system for detecting and locating incipient failure behavior in underground cable is prevalent. New techniques for detection and location of incipient cable failures in underground power distribution systems are 

Identification of Fault Types for Underground Cable using Discrete Wavelet transform
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ABSTRACT In this paper, a technique for identifying the phase with fault appearance in underground cable is presented. The Wavelet transform has been employed to extract high frequency components superimposed on fault signals simulated using ATP/EMTP. The 

Calculation of underground cable ampacity
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ABSTRACT This paper introduces the heat transfer mechanisms in underground cable installations and analyzes the available solution methods of the diffusion equation. The heat sources and thermal resistances of the different layers of a cable installation are described 

Some Italian experiences in the utilization of HV underground cable systems to solve local problems due to magnetic field and other environmental issues
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SUMMARY The paper illustrates the strategies and techniques adopted in some cases in Italy to overcome, by the utilization of HV XLPE cable (unshielded or shielded), the difficulties arising whenever an existing or planned HV or EHV line crosses densely 

New 400 kV underground cable system project in Jutland (Denmark)
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The building of a 400-kV connection between Aalborg (North Jutland) and Århus (transformer station in Trige) will complete the ring of the main Jutland high-voltage grid. Planning and government evaluation of the 140 km line have been going on for more than 

Real time prelocalisation of electrical defaults on high voltage underground cable (single-phase case)
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ABSTRACT This paper proposes an assistance tool to the prelocalisation of the insulation defaults affecting electrical single-phase cables by using voltage and current measurements available in source substation. An equivalent network modeling defaults to the ground is 

Series impedance and shunt admittance matrices of an underground cable system
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ABSTRACT This thesis describes numerical methods for the: evaluation of the series impedance matrix and shunt admittance matrix of underground cable systems. In the series impedance matrix, the terms most difficult to compute are the internal impedances of 

Improving the management of MV underground cable circuits using automated on-line cablepartial discharge mapping
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ABSTRACT On-line location of Partial Discharge (PD) or cable mapping is a relatively new technique that enables asset operators to target the replacement of deteriorating cable sections that would likely have progressed to failure (provided that a number of pre- 

Underground/submarine cable protection using a negative-sequence directional comparison scheme
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ABSTRACT Protective relaying requirements for underground and submarine cables are different from those for overhead lines. This paper analyzes the application of directional comparison schemes to protect two 34.5 kV submarine cables. These cables are 24-km 

Measurements for validation of high voltage underground cable modelling
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ABSTRACT This paper discusses studies concerning cable modelling for long high voltage AC cable lines. In investigating the possibilities of using long cables instead of overhead lines, the simulation results must be trustworthy. Therefore a model validation is of great 

Underground power cable installations: soil thermal resistivity
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Who would have thought that an electrical power engineer would need to be an expert at soil physics as well? But, increasingly, such knowledge is becoming critical in the design and implementation of underground power transmission and distribution systems. The 

Characterization of Underground Cable Failures
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ABSTRACT Research has been performed on underground distribution cables to begin characterizing incipient failure behavior for the development of an underground incipient failure detection system. Field experiments were performed on damaged samples 

Verification of LV underground cable insulation by air injection
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ABSTRACT This paper presents the development of a new method for verifying the mechanical integrity of the insulation of lowvoltage cables in order to ensure a quality installation and prevent potential arcing faults. The approach consists in injecting 

Calculation of earthing and screening effects of compensation conductor laid alongsideunderground multi-cable power lines
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ABSTRACT Power substations in an urban area are interconnected by high voltage underground power cables, resulting also in interconnections of their earthing grids through cable metallic screens/sheaths. Most modern power cables with XLPE insulated core 

The Factors Influencing Signal Propagations in the Underground Cable for Broadband Power-Line Communications (PLC) Systems
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ABSTRACT Recently power-line network has been proposed for broadband power-line communications. The network construction in most of the countries is the mixture of overhead and underground networks. The underground cable power transmission system 

Long length EHV underground cable systems in the transmission network
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M Del Brenna, F Donazzi, A Mansoldo ,Proc. CIGRE Genera1 ,transform.ru The power transmission network has developed during the last decades based on the use of overhead lines. EHV underground insulated cable systems have been available since a long time (fluid filled technology initially and solid dielectric technology more recently), but their 

Discrete Wavelet Transform and Back-propagation Neural Networks Algorithm for Fault Classification in Underground Cable
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ABSTRACT This paper proposes a new technique using discrete wavelet transform (DWT) and back-propagation neural network (BPNN) for fault classifications on underground cable. Simulations and the training process for the back-propagation neural network are 

The use of SMART cable bolt instruments toward the design and design optimization ofunderground rock support systems
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ABSTRACT Instrumented cable bolt support [SMART–Stretch Measurement for Assessment of Reinforcement Tensioncables] was developed in Canada and has been in use for the past three years. These instruments have achieved wide 


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