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The Influence Of Different Structure For The Safety Of Grounding Systems Located In Soil Parameters Simulation Research

Posted on:2016-08-29Degree:MasterType:Thesis
Country:ChinaCandidate:P GuoFull Text:PDF
GTID:2272330482958304Subject:Agricultural informatization
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Ground network is an important part of power plants and substations, grounding safety performance has been taken seriously. Ground network not only provides a common reference for all kinds of electrical equipment within the station, and in the power system failure, the fault current is rapidly excreted into the ground, the maximum potential of the ground control network increases, to ensure personal and equipment safety. Therefore, qualified for the safe operation of the grounding grid power system has a very important role. This paper introduces the grounding of several network security performance parameters.Grounding major factors affecting the accuracy of the soil parameter calculation model. Earth resistivity distribution is difficult to understand, it is usually grounded compute approximate the uniform, homogeneous or stratified composite layered soil model. But no matter what kind of the above models are oversimplified soil resistivity distribution. Given this situation, in recent years, we propose a new model of soil-massive soil structure model. Such models have a greater degree of flexibility can be more aptly reflect the real distribution of soil resistivity, and therefore it is more reliable settlement result obtained.This paper introduces the different soil structure Shimoji network model algorithm theory in the introduction; the second chapter to simulate ground network security features three arguments grounding techniques CDEGS software packages. Chapters III and IV were introduced under different conditions on the horizontal two-parameter model of soil and ground network parameters massive soil model simulation research and analyze the data and draw conclusions and made similar such structures under the complex soil conditions grounding network security design optimization techniques. The fifth chapter describes the actual Project to design specification. The last chapter summarizes the work of this paper, the conclusion, and points out the shortcomings of this study.
Keywords/Search Tags:structure of soil grounding, resistance, step potential, contact potential
PDF Full Text Request
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