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                首页> 《新版彩神8app》期刊 >本期导读>高压电缆终端铅封缺陷超声检测方法研究

                高压电缆终端铅封缺陷超声检测方法研究

                98    2022-03-24

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                作者:方春华1, 胡冻三1, 郭凯歌1, 卢佳杨1, 陈杰2, 曹京荥2, 陶玉宁1

                作者单位:1. 三峡大学电气与新能源学院,湖北 宜昌 443002;
                2. 国网江苏→省电力有限公司电力科学研究院,江苏 南京 210000


                关键词:高压电缆;终端铅封;超声波检测;缺陷识别


                摘要:

                铅封作为高压电缆终端附件重¤要组成部分,其内部会因安装质量不合格或运行过程中受外力作用出现气孔缺陷 藍逸河一愣或导致开裂。为消除铅封缺陷对电网安全运行造成的隐患,提出一种利用超声波♀对铅封缺陷进行检测的朝其中一個天仙直接斬了下去方法。根据电缆终端◥铅封结构特点,采用COMSOL仿真软件对高压电缆终端铅封典型缺陷进行超沒有理會王鐵声仿真,揭示超■声波在铅封缺陷中的传播特性和规律,同时对具备人工≡缺陷铅封试样进行超声爆检测试验。结果表明:超声波会在气孔缺陷处发生反射和透射现象,且不㊣同位置缺陷可通过缺陷回波时间和幅值准确反映。该方法验证超声波检测技】术应用于电缆终端铅封缺陷检测的可行性,可为检测电缆终端铅封缺陷提供一定的参考。


                Research on ultrasonic testing method for lead sealing defects of high voltage cable terminals
                FANG Chunhua1, HU Dongsan1, GUO Kaige1, LU Jiayang1, CHEN Jie2, CAO Jingying2, TAO Yuning1
                1. College of Electricity and New Energy, China Three Gorges University, Yichang 443002, China;
                2. Electric Power Research Institute of State Grid Jiangsu Electric Power Co., Ltd., Nanjing 210000, China
                Abstract: Lead seal is an important part of high-voltage cable terminal accessories, and its internal air hole defects or cracks may occur due to unqualified installation quality or external force during operation. In order to eliminate the hidden danger caused by lead seal defects to the safe operation of power grid, a method of ultrasonic detection for lead seal defect is proposed. According to the characteristics of cable terminal lead seal structure, the typical defects of high-voltage cable terminal lead seal are simulated by COMSOL simulation software to reveal the propagation characteristics and laws of ultrasonic wave in lead sealing defects. Meanwhile, ultrasonic testing test is carried out on lead sealing samples with artificial defects. The results show that the ultrasonic wave can reflect and transmit at the pores, and the defects at different positions can be accurately reflected by the echo time and amplitude of defects. This method verifies the feasibility of applying ultrasonic testing technology to the detection of cable terminal lead sealing defects, and provides some reference for the detection of cable terminal lead sealing defects.
                Keywords: high voltage cable;terminal lead seal;ultrasonic testing;defect identification
                2022, 48(3):118-123  收稿日期: 2021-01-18;收到修改稿日期: 2021-04-02
                基金项目:
                作者简介: 方春华(1980-),男,湖北宜⊙昌市人,副教授,博士,研究方向为电力设备状态监测研究
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