| 基于路径时间差的变压器局部放电超声定位方法研究 |
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| 引用本文： | 孙浩飞,高坤,花啸昌,高峰,李元,张冠军.基于路径时间差的变压器局部放电超声定位方法研究[J].陕西电力,2022,0(3):100-107. |
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| 作者姓名： | 孙浩飞 高坤 花啸昌 高峰 李元 张冠军 |
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| 作者单位： | （1.国网陕西电力科学研究院，陕西西安 710100；2.西安交通大学电力设备电气绝缘国家重点实验室，陕西西安 710049；3.国网陕西省电力公司西安供电公司，陕西西安 710199） |
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| 摘 要： | 通过仿真详细阐述了超声波信号在变压器内的传播特性与传播路径。结合仿真结果，建立了变压器的数值节点模型，研究了超声信号非直达波路径与直达波路径的寻路算法。将两条路径的时间差作为特征参量与实测波形的时间差进行比对，采用粒子群优化算法迭代得到放电源的位置。在35 kV实验变压器上进行了定位实验，验证了算法的准确性。
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| 关 键 词： | 变压器 局部放电定位 超声波法 粒子群算法 |
Ultrasonic Positioning Method of Transformer Partial Discharge Based on Path Time Difference |
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| SUN Haofei,GAO Kun,HUA Xiaochang,GAO Feng,LI Yuan,ZHANG Guanjun.Ultrasonic Positioning Method of Transformer Partial Discharge Based on Path Time Difference[J].Shanxi Electric Power,2022,0(3):100-107. |
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| Authors: | SUN Haofei GAO Kun HUA Xiaochang GAO Feng LI Yuan ZHANG Guanjun |
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| Affiliation: | （1. State Grid Shannxi Electric Power Research Institute，Xi’an 710100， China；2. State Key Laboratory of Electrical Insulation and Power Equipment，Xi’an Jiaotong University，Xi’an 710049，China；3. State Grid Xi’an Power Supply Company，Xi’an 710199，China） |
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| Abstract: | The paper investigates the propagation characteristics and propagation path of ultrasonic signal in transformer in detail through simulation， establishes the numerical node model of the transformer combined with the simulation results， and studies the pathfinding algorithms of non-direct-wave path and direct-wave path of the ultrasonic signal. The time difference between these two paths is compared with that of the measured waveform， and the particle swarm optimization algorithm is used to iteratively obtain the discharge source position. The positioning experiment is carried out on a 35 kV experimental transformer to verify the accuracy of the algorithm. |
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| Keywords: | transformer partial discharge positioning ultrasonic method particle swarm optimization |
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