Influence of Excitation Side Parameters on Laser Induced Pressure Propagation Properties and Methods to Improve the Measurement Accuracy of Space Charge
Ma Yidan1, Qi Tianrun1, Ren Hanwen1,2, Gao Haoyu1, Li Qingmin1,2
1. State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources North China Electric Power University Beijing 102206 China; 2. Beijing Key Lab of HV and EMC North China Electric Power University Beijing 102206 China
Abstract：Laser induced pressure propagation (LIPP) method is one of the commonly used methods to measure solid insulating materials. In the process of space charge measurement using LIPP, different excitation schemes induce pressure pulses with different waveforms, pulse widths, and amplitudes, and the pressure wave characteristics further directly affect the charge measurement results. The pressure wave characteristics further directly affect the charge measurement results. However, few studies have been conducted to discuss the effects of the excitation side schemes on the pressure wave characteristics as well as the measured signal waveforms, spatial resolution and signal-to-noise ratio. In order to visually analyse the characteristics of pressure waveform, pulse width and amplitude, this paper builds a high-frequency and narrow pulse width pressure pulse signal detection platform based on piezoelectric thin film, and combines it with the LIPP method of space charge measurement system, to visually analyze the effects of laser parameters and target electrode materials on pressure waveform and space charge measurement results. The different mechanisms of elastic wave generation and propagation are further analyzed in combination with the constructed three-dimensional simulation model of laser ablation elastic wave propagation, and the optimal excitation scheme suitable for the proposed laser-induced pressure wave measurement device is selected. The experimental and simulation results show that the laser single pulse energy, spot diameter and target electrode material have significant effects on the pressure wave generation and charge measurement signal results. Due to the simultaneous existence of thermal elastic and ablation effects in the process of laser ablation of the target electrode, the pressure wave generated is a positive and negative bimodal waveform. With the increase of energy, the amplitude of the ablation pressure pulse and the charge signal increases linearly synchronously, while the amplitude of the pressure wave generated by the thermal elastic effect is almost unchanged. Secondly, the pressure wave generated by the Gaussian beam with a larger diameter has less influence on its own diffraction attenuation during the propagation process, and the increase of the laser spot diameter can effectively increase the ablation area of the target electrode, thereby increasing the pressure wave energy, but the continuous increase of the diameter will reduce the energy density, resulting in a logarithmic increase of the pressure wave amplitude. Finally, under the same laser parameters, the surface constraint of the aluminum electrode can be increased by spraying micron-level atomized graphite spray, and the absorption performance of aluminum to the laser can be enhanced, so as to further improve the pressure wave intensity. The use of metallic aluminum sprayed with micron-thick graphite layer as the target material, together with the excitation laser with 340 mJ single pulse energy and 10 mm spot diameter, significantly improves the accuracy of the space charge measurement, and the resolution of the system reaches 14 μm. At the same time,through the analysis of the measurement results of the space charge of the polyimide under the strong-field polarization, the validity of the excitation scheme is proved, and it provides an idea for the study of the design of the excitation scheme of the LIPP method and the propagation mechanism of the pressure wave.
马一丹, 綦天润, 任瀚文, 高浩予, 李庆民. 激励侧参数对激光诱导压力波特性的影响与空间电荷测量精度提升方法[J]. 电工技术学报, 2025, 40(15): 4999-5010.
Ma Yidan, Qi Tianrun, Ren Hanwen, Gao Haoyu, Li Qingmin. Influence of Excitation Side Parameters on Laser Induced Pressure Propagation Properties and Methods to Improve the Measurement Accuracy of Space Charge. Transactions of China Electrotechnical Society, 2025, 40(15): 4999-5010.
[1] 王健, 李庆民, 任瀚文, 等. 固体电介质空间电荷的光电子学测量方法研究进展[J]. 电工电能新技术, 2020, 39(3): 55-66. Wang Jian, Li Qingmin, Ren Hanwen, et al.Advances in optoelectronics-based measurement of space charge in solid dielectrics[J]. Advanced Technology of Electrical Engineering and Energy, 2020, 39(3): 55-66. [2] 王凯, 赵新东, 郑海峰, 等. 极性分子的结构异同性对接枝改性交联聚乙烯材料直流电性能的影响[J]. 电工技术学报, 2024, 39(1): 34-44. Wang Kai, Zhao Xindong, Zheng Haifeng, et al.Influence of the structural similarities of polar molecules on DC properties of grafted modified cross-linked polyethylene materials[J]. Transactions of China Electrotechnical Society, 2024, 39(1): 34-44. [3] 张镱议, 赵梓炜, 刘捷丰, 等. 耐电晕聚酰亚胺薄膜研究进展[J]. 电工技术学报, 2023, 38(5): 1190-1205. Zhang Yiyi, Zhao Ziwei, Liu Jiefeng, et al.Research progress of corona resistant polyimide films[J]. Transactions of China Electrotechnical Society, 2023, 38(5): 1190-1205. [4] 朱敏慧, 闵道敏, 高梓巍, 等. 直流电缆用交联聚乙烯绝缘的击穿概率及其尺度效应仿真[J]. 电工技术学报, 2024, 39(4): 1172-1184. Zhu Minhui, Min Daomin, Gao Ziwei, et al.Breakdown probability and size effect simulation of XLPE insulation for DC power cables[J]. Transactions of China Electrotechnical Society, 2024, 39(4): 1172-1184. [5] Bilal Iqbal Ayubi, 张黎, 徐黄宽, 等. 高频电应力下聚酰亚胺沿面放电演化特性[J]. 电工技术学报, 2023, 38(5): 1177-1189. Ayubi B I, Zhang Li, Xu Huangkuan, et al.Evolution characteristics of surface discharge along polyimide under high-frequency electric stress[J]. Transactions of China Electrotechnical Society, 2023, 38(5): 1177-1189. [6] 高浩予, 任瀚文, 李庆民, 等. 适配光电子学空间电荷测量方法的弹光传感器设计与测试验证[J]. 电工技术学报, 2023, 38(3): 587-598. Gao Haoyu, Ren Hanwen, Li Qingmin, et al.Design and measurement verification of elasto-optical sensor adapted to space charge measurement method based on optoelectronics[J]. Transactions of China Electro-technical Society, 2023, 38(3): 587-598. [7] 张冶文, 潘佳萍, 雷清泉, 等. 固体绝缘介质中的空间电荷效应及应用[J]. 科学通报, 2021, 66(增刊2): 3695-3711. Zhang Yewen, Pan Jiaping, Lei Qingquan, et al.Space charge effect and application in solid insulation dielectrics[J]. Chinese Science Bulletin, 2021, 66(S2): 3695-3711. [8] 姜雄伟, 金涌涛, 韩睿, 等. 热老化下双层聚酯薄膜空间电荷特性的试验与数值仿真研究[J]. 高压电器, 2023, 59(3): 61-68. Jiang Xiongwei, Jin Yongtao, Han Rui, et al.Research on test and numerical simulation of space charge characteristics of double layer thermally aged polyester film[J]. High Voltage Apparatus, 2023, 59(3): 61-68. [9] Upadhyay A K, Johri P, Reddy C C, et al.Direct measurement of accumulated space charge using external currents[J]. IEEE Transactions on Instrum-entation Measurement, 2021, 70: 3041381. [10] 潘佳萍, 张冶文, 李俊, 等. 结合电子束辐照与压电压力波法空间电荷分布实时测量的空间电荷包迁移行为的研究[J]. 物理学报, 2024, 73(2): 254-262. Pan Jiaping, Zhang Yewen, Li Jun, et al.Migration behavior of space charge packet researched by using electron beam irradiation and real-time space charge distribution measurement in piezo-pressure wave propagation (PWP) method[J]. Acta Physica Sinica, 2024, 73(2): 254-262. [11] 孔佳莹, 曹泽宾, 潘佳萍, 等. 从接地端取信号的便携式压电压力波法空间电荷测量系统设计与实现[J]. 电工技术学报, 2021, 36(19): 3987-3992. Kong Jiaying, Cao Zebin, Pan Jiaping, et al.Design and implementation of a portable space charge measurement system taking signals from the ground side based on PIPWP method[J]. Transactions of China Electrotechnical Society, 2021, 36(19): 3987-3992. [12] Sessler G M, Gerhard-Multhaupt R, von Seggorn H, et al. Charge and polarization profiles in polymer electrets [J]. IEEE Transactions on Electrical Insulation, 1986, EI-21(3): 411-415. [13] Klichowski F M, Rösch F, Plath R.Enabling a lipp system for space charge measurements under the influence of temperature gradients[J]. IET Conference Proceedings, 2022, 2021(15): 1554-1559. [14] HoIe S. Recent developments in the pressure wave propagation method[J]. IEEE Electrical Insulation Magazine, 2009, 25(3): 7-20. [15] Laurençeau P, Dreyfus G, Lewiner J.New principle for the determination of potential distributions in dielectrics[J]. Physical Review Letters, 1977, 38(1): 46-49. [16] Sessler G M, West J E, Gerhard R.Measurement of charge distribution in polymer electrets by a new pressure-pulse method[J]. Polymer Bulletin, 1981, 6(1): 109-111. [17] Malec D.Technical problems encountered with the laser induced pressure pulse method in studies of high voltage cable insulators[J]. Measurement Science and Technology, 2000, 11(5): N76-N80. [18] Van H T, Auge J L, Rain P.Study of the generation of the pressure pulse in the laser induced pressure pulse method: Optimization of the process[C]//2010 10th IEEE International Conference on Solid Dielectrics, Potsdam, Germany, 2010: 1-4. [19] Spelzhausen S, Ionian M R, Plath R, et al.Parameter optimization and improvement of space charge measurements with the laser induced pressure pulse method[C]//VDE High Voltage Technology 2018, Berlin, Germany, 2018: 1-5. [20] 温已年. 基于LIPP法的空间电荷测量系统[D]. 哈尔滨: 哈尔滨理工大学, 2017. Wen Yinian.Space charge measurement system based on LIPP[D]. Harbin: Harbin University of Science and Technology, 2017. [21] Gerhard-Multhaupt R.Analysis of pressure-wave methods for the nondestructive determination of spatial charge or field distributions in dielectrics[J]. Physical Review B, 1983, 27(4): 2494-2503. [22] Bambery K R, Fleming R J.Space charge accumulation in two power cable grades of XLPE[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 1998, 5(1): 103-109. [23] 张颖. 基于新型太赫兹器件的高分辨率界面空间电荷测试系统[D]. 哈尔滨: 黑龙江大学, 2015. Zhang Ying.Interfacial space charge testing system with high resolution based on new kinds of THz devices[D]. Harbin: Heilongjiang University, 2015. [24] 董亮, 冯双, 朱磊, 等. 基于激光超声的铝板体内裂纹缺陷定位定量研究[J]. 应用激光, 2022, 42(7): 102-111. Dong Liang, Feng Shuang, Zhu Lei, et al.Research on crack defect location and dimensions in aluminum plate based on laser ultrasonic[J]. Applied Laser, 2022, 42(7): 102-111. [25] 黄邦斗, 张传升, 章程, 等. 皮秒脉冲激光诱导压力波法测量金属化薄膜空间电荷[J]. 中国电机工程学报, 2023, 43(15): 5818-5824. Huang Bangdou, Zhang Chuansheng, Zhang Cheng, et al.Space charge in metalized film measured by picosecond pulsed laser induced pressure pulse method[J]. Proceedings of the CSEE, 2023, 43(15): 5818-5824. [26] Lv Tianhua, Cao Zhiyu, Zheng Feihu, et al.Space charge measurement and data calibration using LIPP method for the real long HVDC cable[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2023, 30(6): 2567-2576. [27] 赖奇. 基于热蚀效应激光声源的研究[D]. 重庆: 重庆医科大学, 2022. Lai Qi.Research on laser sound source based on thermal erosion effect[D]. Chongqing: Chongqing Medical University, 2022. [28] 郭嘉伟, 蔡和, 韩聚洪, 等. 基于热烧蚀效应的激光清洗仿真模型研究(特邀)[J]. 红外与激光工程, 2023, 52(2): 3788/IRLA20220779. Guo Jiawei, Cai He, Han Juhong, et al. Simulation model of laser cleaning based on thermally-induced ablation effects (invited)[J]. Infrared and Laser Engineering, 2023, 52(2): 3788/IRLA20220779. [29] 中华人民共和国工业和信息化部. 固体绝缘材料中空间电荷分布的压力波测试方法: JB/T 12928—2016[S]. 北京: 机械工业出版社, 2017. [30] Spelzhausen S.Untersuchung des temperatur-und feldstärkeabhängigen raumladungsverhaltens an einer schichtanordnung aus silikonfett und silikonelastomer mittels automatisierter lipp-messungen[D]. Berlin: Technische Universität Berlin, 2019.
2025, Vol. 40 
