文献类型：期刊文献

中文题名：Sealed model and computation of hazardous waste landfill high voltage DC leakage detection

英文题名：Sealed model and computation of hazardous waste landfill high voltage DC leakage detection

作者：Yang, Ping[1]; Tian, Jinwen[1]; Wang, Yanni[1]; Xue, Lin[1]

第一作者：杨萍

通讯作者：Yang, Ping

机构：[1] School of Information, Beijing Union University, Beijing, 100101, China

第一机构：北京联合大学智慧城市学院

年份：2015

卷号：0

期号：4

起止页码：457-464

中文期刊名：高技术通讯：英文版

外文期刊名：High Technology Letters

收录：EI(收录号：20160301827943);Scopus(收录号：2-s2.0-84954317343)

基金：Supported by the National Basic Research Development Program of China(No.2010CB428506);the National High Technology Research and Development Program(No.2007AA061303);Beijing Higher Education Young Elite Teacher Project(YETP1756)

语种：英文

中文关键词：数值计算方法;废物填埋场;泄漏检测;电流模型;高压直流;密封;危险;高密度聚乙烯

外文关键词：Boundary conditions - Electrodes - Fiber optic sensors - Hazardous materials - Hazards - High density polyethylenes - Land fill - Numerical methods - Poisson equation

摘要：According to the structural characteristics of hazardous waste landfill and the leakage current model of high voltage DC Landfill leakage detection,a sealed model is established and analyzed in detail.The detection layer of the hazardous waste landfill is considered as a sealed space and it is assumed that the source current flows through the leak entirely.The leak is regarded as a positive current resource +I located at the current entrance or a negative resource-I located at the current exit,which depends on the placement of the current supply.The electrical potential of an arbitrary in detection layer satisfies Poisson equation.The boundary condition is regarded as a natural boundary condition for the high resistivity of high density polyethylene(HDPE) membrane.Based on which a numerical calculation method is developed.Satisfactory agreement between experimental data and simulated data validates the analysis.Parametric studies show that a larger horizontal distance between the power supply electrode and leak and a smaller distance between the detector electrodes and the detected liner are helpful to leak location.More parametric curves show that parameters leaks can be detected effectively with optimum selection of field survey.
According to the structural characteristics of hazardous waste landfill and the leakage current model of high voltage DC Landfill leakage detection, a sealed model is established and analyzed in detail. The detection layer of the hazardous waste landfill is considered as a sealed space and it is assumed that the source current flows through the leak entirely. The leak is regarded as a positive current resource +I located at the current entrance or a negative resource-I located at the current exit, which depends on the placement of the current supply. The electrical potential of an arbitrary in detection layer satisfies Poisson equation. The boundary condition is regarded as a natural boundary condition for the high resistivity of high density polyethylene (HDPE) membrane. Based on which a numerical calculation method is developed. Satisfactory agreement between experimental data and simulated data validates the analysis. Parametric studies show that a larger horizontal distance between the power supply electrode and leak and a smaller distance between the detector electrodes and the detected liner are helpful to leak location. More parametric curves show that parameters leaks can be detected effectively with optimum selection of field survey. Copyright ? by HIGH TECHNOLOGY LETTERS PRESS.