Research on Optimization Layout for TDOA-based Combined Localization and Monitoring Antenna of Partial Discharge in Transformer

SHA Weiyan; HE Ninghui; ZHANG Pei; ZHANG Fangbo

doi:10.13296/j.1001-1609.hva.2026.08.010

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Research on Optimization Layout for TDOA-based Combined Localization and Monitoring Antenna of Partial Discharge in Transformer

Research & Analysis | 更新时间：2026-08-12

- Research on Optimization Layout for TDOA-based Combined Localization and Monitoring Antenna of Partial Discharge in Transformer
- High Voltage Apparatus Vol. 62, Issue 8, Pages: 74-82(2026)
- 作者机构：
  
  国网宁夏电力有限公司电力科学研究院，银川 750011
  上海迈内能源科技有限公司，上海 200241
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2026.08.010
  CLC：
- Received：14 February 2026，
  
  Revised：2026-04-23，
  
  Published：16 August 2026
- 稿件说明：
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SHA Weiyan, HE Ninghui, ZHANG Pei, et al. Research on Optimization Layout for TDOA-based Combined Localization and Monitoring Antenna of Partial Discharge in Transformer[J]. High Voltage Apparatus, 2026, 62(8): 74-82.
DOI：

SHA Weiyan, HE Ninghui, ZHANG Pei, et al. Research on Optimization Layout for TDOA-based Combined Localization and Monitoring Antenna of Partial Discharge in Transformer[J]. High Voltage Apparatus, 2026, 62(8): 74-82. DOI： 10.13296/j.1001-1609.hva.2026.08.010.

摘要

变压器局部放电的准确检测对电力设备的状态评估与电网安全至关重要，针对基于真型变压器的局部放电特高频信号传播特性研究较少，少有学者细致剖析变压器内特高频信号所具有的传播特性，文中首先对局部放电特高频电磁波传播特性与衰减特性进行了研究与分析，同时提出了一种特高频局放定位方法，即一种基于TDOA的UHF法变压器局放组合定位方法，这些研究为监测天线优化提供了一定的理论基础。接着文中对Peano分形天线进行了研究，同时设计了新的特高频油阀式天线，然后通过在变压器内布置多个局部放电源，在箱体上合适位置布置多个Peano分形天线和特高频油阀式天线建立特高频监测天线优化布置模型，经过分析可知仿真与实测信号的幅值和累积能量基本呈现出了较为一致的变化趋势，说明了本建模方法的合理性，为后续优化特高频天线的布置提供了模型基础与帮助。

Abstract

The accurate detection of partial discharge in transformers is crucial for the state assessment of power equipment and the safety of the power grid. Research on the propagation characteristics of partial discharge of ultrahigh frequency(UHF)signals based on full-scale transformers remains relatively limited

and few scholars thoroughly examine the UHF signal propagation behavior inside transformers. In this paper

the propagation and attenuation characteristics of partial discharge of the UHF electromagnetic waves is firstly studied and analyzed and

at the same time

a UHF-based partial discharge localization approach—specifically

a combined transformer partial discharge localization method utilizing the TDOA-based UHF technique

is proposed. These research efforts provide a theoretical basis for the optimal placement of monitoring antennas.Then

the Peano fractal antenna is studied and

at the same time

a new ultra-high frequency oil valve antenna is designed. After that

an optimized layout model for the ultra-high frequency monitoring antenna is set up by arranging multiple local discharge sources in the transformer and multiple Peano fractal antennas as well as ultra-high frequency oil valve antennas at appropriate positions on the box. It is found through analysis that both amplitude and accumulative energy of the simulated and measured signals exhibit a generally consistent trend

which demonstrates the effectiveness of the proposed modeling method and provides a model foundation and support for the subsequent optimization of UHF antenna placement.

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references

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