Pulse radar systems, known as subsurface interface radars, have been widely used to locate underground objects. Three-dimensional towershaped antennas were developed to replace conventional plane antennas and accurately detect the location and depth of underground objects like gas pipes, water pipes and transmission cables. The newly developed radar system using these tower-shaped antennas is c...

This paper presents a fault identification, classification and fault location estimation method based on Discrete Wavelet Transform and Adaptive Network Fuzzy Inference System (ANFIS) for medium voltage cable in the distribution system. Different faults and locations are simulated by ATP/EMTP, and then certain selected features of the wavelet transformed signals are used as an input for a train...

In cable trench construction, one of the tasks for engineers is to select a suitable route to minimize construction cost and obstructions. This paper discusses the development of a Geographic Information Systems (GIS)-based Customized system to automate the process of optimum shortest path finding for routing of underground power supply cable between any two substations. It combines the spatial...

France was one of the first countries to operate underground extruded cables, and now has gained almost forty years experience with high and extra high voltage levels. Synthetic insulated cable systems were installed on the French transmission network since early 1962 (63 kV). Cross-linked polyethylene has gradually replaced thermoplastic insulation materials since 1981. The design of the under...

In this paper, fault location accuracies in a 2400 km long overhead HVdc line and 300km long underground cable HVdc line using the two-terminal travelling wave method are investigated. The paper proposes to use continuous wavelet transform for detecting the arrival time of travelling waves, and shows that it provides better accuracy when compared with the commonly used discrete wavelet transfor...

In this paper a numerical study of two-dimensional conjugate natural convection in square cavity containing heated cylinders and outer isothermal boundaries is performed. The cavity is designed to simulate an unfilled trough containing electrical cables. The purpose of this paper is to investigate the effect of geometrical arrangements of electrical cables in underground cable ducts on the heat...

Recently, the demand on position detection system using WiFi[1] and cellular phone[2] have been appeared. Car navigation system and 3G cellular phone use GPS(Global Positioning System) for position detection. However, it is impossible to use GPS underground because GPS signal cannot be received due to obstacles. Therefore, many position detection methods to use at narrow area have been proposed...

CE/SC : 21, Publié/Published : 1968, Session paper, Ref. No. : 21-00, Special Report for Group 21. CE/SC : 21, Publié/Published : 1968, Session paper, Ref. No. : 21-06, Some Observations upon Distributions of Partial Discharge Pulses Measured with a Multi-Channel Analyser. CE/SC : 21, Publié/Published : 1968, Session paper, Ref. No. : 21-05, 200 kV D.C. Submarine Cable Interconnection between S...