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Ligntning Protection of10kV Distribution Line in Shanghai

Author: WeiZuo
Tutor: YangFuWen
School: East China University of Science and Technology
Course: Control Engineering
Keywords: lightning broken lightning over-voltage 10KV distribution line flashoverprevention measure
CLC: TM862
Type: Master's thesis
Year: 2014
Downloads: 41
Quote: 0
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Abstract


Safety and reliability are important indicators of our grid. lOkV distribution line is an important part of grid. However lightning broken is one of the main reasons of over-head power distribution lines accidents which will lead to broken of motor and machine and at least the power outage, which is inconvenient to our daily life. Improving insulation of distribution line can induce fault rate effectively and then high-rise the reliability of grid.In this paper, present situation in Shanghai will be analyzed combided with lOkV distribution network in one specific region. The study will pay attention to the insulation feature of10kV conductor, the lightning damage cases in Shanghai and actual operation of the typical examples. At first, using ATP-EMTP (Electro-MagneticTransient Program) witch is widely used all around the world to establish model of lightning derectly to line, then establish the model of lightning induced overvoltage. Calculation and analysis will be done according to the simulation. Then applying finite element analysis software COMSOL Multiphysics establish model of lightning to some devices and calculate the distribution of electromagnetic field around devices. At last, a series of measurement are given to decrease lightning fault rate based on the result of these three simulation models.

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CLC: > Industrial Technology > Electrotechnical > High Voltage Engineering > Overvoltage and Its Protection > Over-voltage protection devices
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