Analysis of Ultrasonic Signal Characteristics of Generator Stator Wire Bar Discharge Based on Wideband Ultrasonic Sensor

LIU Guoyong; CUI Yankai; ZHAO Yiming; ZHANG Yunfei; HUANG Ze; ZHOU Jin; WU Ming; GAO Jinghui; ZHONG Lisheng

doi:10.13296/j.1001-1609.hva.2025.10.008

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Analysis of Ultrasonic Signal Characteristics of Generator Stator Wire Bar Discharge Based on Wideband Ultrasonic Sensor

Panoramic State Intelligent Perception Technology for Power Equipment | 更新时间：2025-10-21

- Analysis of Ultrasonic Signal Characteristics of Generator Stator Wire Bar Discharge Based on Wideband Ultrasonic Sensor
- High Voltage Apparatus Vol. 61, Issue 10, Pages: 62-70(2025)
- 作者机构：
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- DOI：10.13296/j.1001-1609.hva.2025.10.008
  CLC：
- Received：01 April 2025，
  
  Revised：2025-07-02，
  
  Published：16 October 2025
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LIU Guoyong, CUI Yankai, ZHAO Yiming, et al. Analysis of Ultrasonic Signal Characteristics of Generator Stator Wire Bar Discharge Based on Wideband Ultrasonic Sensor[J]. High voltage apparatus, 2025, 61(10): 62-70.
DOI：

LIU Guoyong, CUI Yankai, ZHAO Yiming, et al. Analysis of Ultrasonic Signal Characteristics of Generator Stator Wire Bar Discharge Based on Wideband Ultrasonic Sensor[J]. High voltage apparatus, 2025, 61(10): 62-70. DOI： 10.13296/j.1001-1609.hva.2025.10.008.

摘要

大型发电机定子线棒对电力系统发电机组至关重要，其绝缘性能关乎发电机及电网稳定安全，电晕放电引发的绝缘腐蚀击穿事故频发。由于之前大多数研究是将传感器安装在发电机组的外壳上，并且主流谐振式传感器对于检测不同频率的超声信号有局限性，不能准确反应其时频域特点。为此文中使用宽频超声传感器检测定子线棒放电超声信号，从而获得不同类型信号的特征，为以后基于超声信号的线棒放电在线监测诊断提供基础。首先通过电场仿真确定传感器最佳安放位置，然后设计局部放电试验验证宽频传感器可行性，最后对超声信号进行时频域和相位的特征分析。结果表明：宽频传感器对于检测不同频率超声信号效果显著，并且特征分析结果可用于缺陷类型的识别。

Abstract

The stator bars of large generators are of vital importance to the generator sets in power system

and their insulation performance is related to the stability and safety of the generator and power grid. Insulation corrosion and breakdown accidents caused by corona discharge occur frequently. Since most previous studies focus on the installation of sensors on the casing of the generator set

and the mainstream resonant sensors have limitations in detecting ultrasonic signals of different frequencies and cannot accurately reflect its time-frequency domain characteristics. For this purpose

a wideband ultrasonic sensor is used in this paper to detect the ultrasonic signals of stator wire bar discharge

thereby obtaining the characteristics of different types of signals and providing a basis for the future online monitoring and diagnosis of wire bar discharge based on ultrasonic signals. First

the optimal placement position of the sensor is determined through electric field simulation. Then

a partial discharge test is designed to verify the feasibility of the wideband sensor. Finally

the characteristics of the ultrasonic signal in the time-frequency domain and phase are analyzed. The results show that the wideband sensor has a significant effect on detecting ultrasonic signals of different frequencies

and the feature analysis results can be used for identification of defect types.

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references

杨增杰 , 赵显峰 , 张学明 , 等 . 基于局部放电的水轮发电机定子绕组层间间隙放电的检测与分析 [J ] . 绝缘材料 , 2024 , 57 ( 1 ): 94 - 100 .

YANG Zengjie , ZHAO Xianfeng , ZHANG Xueming , et al . Detection and analysis of interlayer gap discharge in hydrogenerator stator winding based on partial discharge [J ] . Insulating Materials , 2024 , 57 ( 1 ): 94 - 100 .

王新 , 杨敏 , 金泱 , 等 . 基于热老化的发电机定子线棒局部放电特性研究 [J ] . 绝缘材料 , 2021 , 54 ( 4 ): 58 - 63 .

WANG Xin , YANG Min , JIN Yang , et al . Research on partial discharge characteristics of generator stator wire rods based on thermal aging [J ] . Insulating Materials , 2021 , 54 ( 4 ): 58 - 63 .

孙宇微 , 吕安强 , 谢志远 . 电缆及其附件局部放电超声波检测技术研究进展 [J ] . 电工电能新技术 , 2022 , 41 ( 9 ): 47 - 57 .

SUN Yuwei , LYU Anqiang , XIE Zhiyuan . Research progress of partial discharge ultrasonic detection technology for cable and its accessories [J ] . Advanced Technology of Electrical Engineering and Energy , 2022 , 41 ( 9 ): 47 - 57 .

丁一 , 张磐 , 戚艳 , 等 . 基于EEMD-CCA组合去噪的新型配电开关柜局部放电抗干扰检测 [J ] . 电子器件 , 2020 , 43 ( 6 ): 1335 - 1340 .

DING Yi , ZHANG Pan , QI Yan , et al . Anti-jamming detection of partial discharge in new generation distribution switchgears based on combined EEMD-CCA denoising [J ] . Journal of Electron Devices , 2020 , 43 ( 6 ): 1335 - 1340 .

武庆周 , 李劲 , 李远 , 等 . Blumlein主放电开关中绝缘结构对沿面闪络电压的影响 [J ] . 强激光与粒子束 , 2022 , 34 ( 9 ): 78 - 82 .

WU Qingzhou , LI Jin , LI Yuan , et al . Influence of insulation system on surface flashover voltage in Blumlein main switch [J ] . High Power Laser and Particle Beams , 2022 , 34 ( 9 ): 78 - 82 .

刘宗沛 , 吕世轩 , 郑丽君 , 等 . MMC子模块开关器件开路故障诊断策略 [J ] . 南方电网技术 , 2024 , 18 ( 6 ): 10 - 19 .

LIU Zongpei , LYU Shixuan , ZHENG Lijun , et al . Diagnosis strategy for open circuit faults of MMC sub-module switching device [J ] . Southern Power System Technology , 2024 , 18 ( 6 ): 10 - 19 .

王远 . 发电机定子绕组局部放电超声波检测系统研究 [D ] . 重庆 : 重庆大学 , 2011 .

WANG Yuan . Research on ultrasonic detection system for partial discharge of generator stator winding [D ] . Chongqing : Chongqing University , 2011 .

王开纪 , 仇光贺 . 电力设备宽频振动传感器优化设计研究 [J ] . 电力设备管理 , 2025 ( 3 ): 173 - 175 .

WANG Kaiji , QIU Guanghe . Research on optimal design of wideband vibration sensors for power equipment [J ] . Electric Power Equipment Management , 2025 ( 3 ): 173 - 175 .

彭宗仁 , 张鹏飞 , 刘鹏 , 等 . 苏通综合管廊工程特高压GIL绝缘关键技术 [J ] . 高电压技术 , 2023 , 49 ( 10 ): 4046 - 4057 .

PENG Zongren , ZHANG Pengfei , LIU Peng , et al . Key technologies of ultra - high voltage GIL insulation for Sutong comprehensive pipe gallery project [J ] . High Voltage Engineering , 2023 , 49 ( 10 ): 4046 - 4057 .

李铁成 , 文武 , 阮江军 , 等 . 用于电缆接头局放检测的插入式传感器频响特性研究 [J ] . 高压电器 , 2019 , 55 ( 8 ): 131 - 136 .

LI Tiecheng , WEN Wu , RUAN Jiangjun , et al . Study on frequency response characteristics of plug-in sensor for cable joint partial discharge detection [J ] . High Voltage Apparatus , 2019 , 55 ( 8 ): 131 - 136 .

周远翔 , 李永印 , 陈健宁 , 等 . 基于局部放电相位图谱和油中溶解气体信息融合的油纸绝缘缺陷识别方法 [J ] . 绝缘材料 , 2023 , 56 ( 12 ): 43 - 53 .

ZHOU Yuanxiang , LI Yongyin , CHEN Jianning , et al . Defect recognition method of oil-paper insulation based on information fusion of PRPD spectrum and dissolved gas data [J ] . Insulating Materials , 2023 , 56 ( 12 ): 43 - 53 .

席禹 , 林冬 , 于力 , 等 . 基于超高频传感器的电力变压器局部放电定位研究 [J ] . 绝缘材料 , 2022 , 55 ( 12 ): 80 - 86 .

XI Yu , LIN Dong , YU Li , et al . Research on partial discharge location of power transformer based on UHF sensor [J ] . Insulating Materials , 2022 , 55 ( 12 ): 80 - 86 .

高树国 , 赵军 , 乔辉 , 等 . 换流变压器局部放电检测与特性研究综述 [J ] . 绝缘材料 , 2022 , 55 ( 7 ): 1 - 9 .

GAO Shuguo , ZHAO Jun , QIAO Hui , et al . Review of partial discharge detection and characteristics of converter transformer [J ] . Insulating Materials , 2022 , 55 ( 7 ): 1 - 9 .

甄鸿越 , 苏寅生 , 赵利刚 , 等 . DSP与BPA同步发电机模型对比研究 [J ] . 南方电网技术 , 2023 , 17 ( 6 ): 26 - 33 .

ZHEN Hongyue , SU Yinsheng , ZHAO Ligang , et al . Comparison research of DSP and BPA synchronous generator models [J ] . Southern Power System Technology , 2023 , 17 ( 6 ): 26 - 33 .

钱学超 , 钱勇 , 赵泓霖 , 等 . 基于超声信号的局部放电无线检测装置研制 [J ] . 电气自动化 , 2019 , 41 ( 6 ): 107 - 110 .

QIAN Xuechao , QIAN Yong , ZHAO Honglin , et al . Development of a wireiess partiai discharge detector based on uitrasonic signaI [J ] . Electrical Automation , 2019 , 41 ( 6 ): 107 - 110 .

吴吉 , 唐作鑫 , 彭向阳 , 等 . 基于TFDR波形时域包络线的电缆故障定位技术 [J ] . 南方电网技术 , 2023 , 17 ( 12 ): 18 - 27 .

WU Ji , TANG Zuoxin , PENG Xiangyang , et al . Cable fault location technology based on TFDR waveform time-domain envelope [J ] . Southern Power System Technology , 2023 , 17 ( 12 ): 18 - 27 .

相晨萌 , 高树国 , 刘宏亮 , 等 . 基于宽频振动传感器的电力设备状态监测方法可行性分析 [J ] . 高压电器 , 2024 , 60 ( 4 ): 83 - 91 .

XIANG Chenmeng , GAO Shuguo , LIU Hongliang , et al . Feasibility analysis of power equipment condition monitoring method based on wideband vibration sensor [J ] . High Voltage Apparatus , 2024 , 60 ( 4 ): 83 - 91 .

罗孝辉 . 基于超声信号的变压器故障在线检测识别方法 [J ] . 电工技术 , 2023 ( 23 ): 140 - 142 .

LUO Xiaohui . Ultrasound signals - based online detection and identification method of transformer faults [J ] . Electric Engineering , 2023 ( 23 ): 140 - 142 .

何维晟 , 吴照国 , 徐扬 , 等 . 高压电缆终端局部放电超声信号传输特性仿真分析 [J ] . 高压电器 , 2023 , 59 ( 11 ): 48 - 55 .

HE Weisheng , WU Zhaoguo , XU Yang , et al . Simulation analysis of propagation characteristics of partial discharge ultrasonic signals in HV cable terminals [J ] . High Voltage Apparatus , 2023 , 59 ( 11 ): 48 - 55 .

王瑞珏 , 张鹏宇 , 王伟 , 等 . 基于PRPD和PSA谱图的大电机主绝缘典型绝缘缺陷局部放电特性分析 [J ] . 绝缘材料 , 2024 , 57 ( 11 ): 119 - 126 .

WANG Ruijue , ZHANG Pengyu , WANG Wei , et al . PD characteristics of typical insulation defects in main insulation of large motor based on PRPD and PSA pattern [J ] . Insulating Materials , 2024 , 57 ( 11 ): 119 - 126 .

杨敏 , 王新 , 童小忠 , 等 . 交流电压下发电机定子线棒典型缺陷局部放电特性研究 [J ] . 电测与仪表 , 2021 , 58 ( 2 ): 8 - 12 .

YANG Min , WANG Xin , TONG Xiaozhong , et al . Investigation of partial discharge characteristics of typical defects in generator stator under AC voltages [J ] . Electrical Measurement & Instrumentation , 2021 , 58 ( 2 ): 8 - 12 .

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