| 黄云志,王蕾,韩 亮.微带天线设计及在局部放电检测中的应用[J].电子测量与仪器学报,2024,38(8):95-102 |
| 微带天线设计及在局部放电检测中的应用 |
| Design of microstrip antenna and its application in partial discharge detection |
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| DOI： |
| 中文关键词: 局部放电检测 新型柔性微带天线 斜切式曲流技术 径向基神经网络 改进白鲸优化算法 |
| 英文关键词:partial discharge detection new flexible microstrip antenna beveled meandering technology radial basis function neural network improved beluga whale optimization algorithm |
| 基金项目:安徽省重点研发计划项目(2022a05020025)资助 |
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| 摘要点击次数: 25 |
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| 中文摘要: |
| 电气设备的局部放电既是绝缘劣化的主要因素，又是有效表征绝缘缺陷的重要参量。对局部放电进行准确检测，可以及时发现危及设备安全的潜在故障。特高频检测具有实时性好、抗干扰强的优势，在放电检测中应用广泛，但现有微带天线传感器受结构尺寸限制，工作带宽难以提高。本文采用部分接地板技术结合斜切式曲流技术改善结构，综合考虑天线尺寸与工作带宽的非线性关系优化尺寸，在保持天线面积不变的前提下扩展工作带宽，并以聚酰亚胺为基底研制了新型微带天线传感器。针对尺寸优化过程中存在的单尺寸参数调整导致天线性能不稳定的问题，提出利用径向基（RBF）神经网络建立多尺寸与工作带宽之间的关系模型，运用改进白鲸优化（IBWO）算法优化天线尺寸。仿真结果表明新型柔性微带天线尺寸缩小了59.59%；工作带宽由0.598~0.6 GHz增加到0.3~3 GHz，完全满足局部放电检测的应用需求。通过模拟局部放电检测试验，并与阿基米德螺旋天线、立体螺旋天线进行比较测试，结果显示新型柔性微带天线具有更高效的检测性能。 |
| 英文摘要: |
| Partial discharge of electrical equipment is not only the main factor of insulation deterioration, but also an important parameter to effectively characterize insulation defects. The accurate detection of partial discharge can detect the potential faults that endanger the safety of equipment in time. UHF detection has the advantages of good real-time performance and strong anti-interference, and is widely used in discharge detection. However, the existing microstrip antenna sensor is limited by the structure size, and the working bandwidth is difficult to increase. In this paper, a new flexible microstrip antenna sensor based on polyimide is developed. The partial flooring technology combined with the beveled meandering technology is used to improve the structure. The nonlinear relationship between antenna size and working bandwidth is considered to optimize the size. The working bandwidth is expanded while keeping the antenna area unchanged. In order to solve the problem that the antenna performance is unstable due to the adjustment of single size parameters in the process of size optimization, a relationship model between multi-size and working bandwidth is proposed by using radial basis function (RBF) neural network, and an improved beluga whale optimization (IBWO) algorithm is used to optimize antenna size. The simulation results show that the size of the new flexible microstrip antenna is reduced by 59.59%. The operating bandwidth is increased from 0.598~0.6 GHz to 0.3~3 GHz, which fully covers the design requirements of partial discharge detection. By simulating partial discharge test and comparing with Archimedean spiral antenna and three-dimensional spiral antenna, the results show that the new flexible microstrip antenna has more reliable detection performance. |
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