| DC Insulation Parameter Characteristics of XLPE in the Course of Its Aging |
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| 作者姓名： | WANGHong-xin CHENGShu-kang WENXi-shan YAOHong-yu CHENYun-ping |
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| 作者单位： | [1]SchoolofElectricalEngineeringandAutomation,HarbinInstiluleofTechnology,Harbin150001,Heilongjiang,China [2]SchoolofElectricalEngineering,WuhanUniversity,Wuhan430072,Hubei,China |
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| 基金项目： | Supported by the National Natural Science Foundation of China (59677018) |
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| 摘 要： | This paper deals with the experimental study on the correlation between insulation resistance (R) and direct current (DC) component (idc) and corresponding aging degree of insulation in the course of the aging within cross linked polyethylene (XLPE) insulation. The aging tests were performed on a section of 10 kV transmission XLPE cable by means of water needle method, and R was measured by dc voltage superimposed method. R and idc were found to be significantly dependent on the corresponding aging degree of insulation in the course of aging of XLPE, and different kind of aging stage has different characteristics. Beside, there are generally similar regularity but different amplitude in the course of aging of XLPE insulation in different electrolyte, and the various electrochemical tree were found on the surface of aging XLPE cable immersed in CuSO, solution. Therefore. according to the changing regularity of the DC characteristic parameters i.e. R and idc within XLPE insulation judging the aging degree of XLPE insulation will be an effective method.
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| 关 键 词： | 绝缘参数 XLPE 直流电 横向耦合 聚乙烯 老化 电缆 |
| 收稿时间： | 15 July 2004 |
DC insulation parameter characteristics of XLPE in the course of its aging |
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| WANGHong-xin CHENGShu-kang WENXi-shan YAOHong-yu CHENYun-ping.DC Insulation Parameter Characteristics of XLPE in the Course of Its Aging[J].Wuhan University Journal of Natural Sciences,2005,10(2):421-425. |
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| Authors: | Wang Hong-xin Cheng Shu-kang Wen Xi-shan Yao Hong-yu Chen Yun-ping |
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| Institution: | (1) School of Electrical Engineering and Automation, Harbin Institute of Technology, 50001 Harbin, Heilongijang, China;(2) School of Electrical Engineering, Wuhan University, 430072 Wuhan, Hubei, China |
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| Abstract: | This paper deals with the experimental study on the correlation between insulation resistance ( R ) and direct current (DC) component ( i dc ) and corresponding aging degree of insulation in the course of the aging within cross linked polyethylene (XLPE) insulation. The aging tests were performed on a section of 10 kV transmission XLPE cable by means of water needle method, and R was measured by DC voltage superimposed method. R and i dc were found to be significantly dependent on the corresponding aging degree of insulation in the course of aging of XLPE, and different kind of aging stage has different characteristics. Beside, there are generally similar regularity but different amplitude in the course of aging of XLPE insulation in different electrolyte, and the various electrochemical tree were found on the surface of aging XLPE cable immersed in CuSO 4 solution. Therefore, according to the changing regularity of the DC characteristic parameters i.e. R and i dc within XLPE insulation judging the aging degree of XLPE insulation will be an effective method. |
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| Keywords: | XLPE aging insulation resistance DC component |
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