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Study of 10kV XLPE Cable Detection Using Osillating Voltage

Author: ChenChengWei
Tutor: LiuGang；LuGuoJun
School: South China University of Technology
Course: High Voltage and Insulation Technology
Keywords: XLPE cables Partial discharge Oscillatory voltage Initial discharge voltage Electric field simulation Finite Element
CLC: TM247
Type: Master's thesis
Year: 2010
Downloads: 173
Quote: 2
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Abstract


10kV XLPE cable of application oscillatory voltage detection of partial discharge , is to detect the cable fault , eliminate safety hazards and to determine effective means of cables running state . But on the the oscillatory test voltage range is not a sound argument , whether cable detect all the defects in the current voltage level . This article is 10kV XLPE power cables and their accessories fault accident statistics and the cause of the fault analysis identified several typical cable defect types , under the premise exclude external damage , as the research focus . 10kV XLPE cable defects produced basic defect model , power frequency voltage partial discharge test , the initial discharge voltage for different defects . The application of finite element electric field simulation methods calculated to cause defects in the partial discharge of the electric field distribution . Frequency voltage oscillation voltage AND ENGINEERING partial discharge inception voltage having highly equivalent this characteristic , the electric field intensity of the partial discharge occurs causing defects obtained in connection with the above studies , established in accordance with the actual size of the cable defect model , computing cables under an internal electric field in the different voltage changes in order to determine the initial discharge voltage of a defective cable , that can effectively detect the main defects of the cable within the pressurizing range of the oscillation voltage . Artificially produced in the field experiment, the same defect . Use the Sasser voltage partial discharge detection equipment to detect the defective cable accessories in different levels of voltage partial discharge . Validated by the results of the field experiments , partial discharge inception voltage close to the theoretical calculation of the partial discharge inception voltage and field experiments to prove the inception voltage defects can be calculated through an electric field simulation proved Sasser voltage detection voltage level can detect the major defects of the cable .

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CLC: > Industrial Technology > Electrotechnical > Electrical materials > Conductive materials and their products > Power cable
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