Dimensional Measurement and Analysis of High Voltage Cables in X-ray Imaging State Detection
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摘要: 高压电力电缆X射线成像检测技术在检查和呈现电缆内部结构状态、识别和分析局部缺陷问题方面发挥着重要作用。但目前该方法主要以定性分析为主,缺乏定量评价的相关研究。基于此,首先研究了电缆X射线成像尺寸量化分析问题,并调研成像系统参数是否满足电缆尺寸测试精度需求;然后,详细分析了影响尺寸测量的关键因素,提出了电缆尺寸标定的具体方法;最后,通过具体应用实例验证了方法的可靠性。结果表明,放大倍数修正值标定法的效果良好,能够满足电力电缆状态检测定量化分析评价的新要求。Abstract: X-ray imaging detection technology for high-voltage power cables plays a significant role in inspecting and displaying the internal structure status of cables and identifying and analyzing the local defects. However, it mainly focuses on qualitative analysis in current, and there are few relevant reports on quantitative evaluation.Firstly, research was conducted on the quantification analysis of cable X-ray imaging dimensions, and imaging system parameters were investigated to determine whether they meet the accuracy requirements for cable size testing. The key factors affecting size measurement were analyzed in detail, and aspecific methods of cable dimension calibration was proposed. Finally, the reliability of the method was verified throughspecific application examples. The results indicated that the discharge multiple correction method had a good effect, which could meet the new requirement of quantitative analysis and evaluation for power cable state detection.
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Keywords:
- power cable /
- X-ray imaging /
- size calibration /
- quantitative evaluation /
- enlargement factor
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