基于PEA的測試信號處理的研究現(xiàn)狀
陳勝科，王偉，顧杰鋒，李富平
華北電力大學 高電壓與電磁兼容北京市重點實驗室，北京 102206
摘 要： 國內(nèi)外普遍采用電聲脈沖法(PEA) 來測量固體電介質(zhì)中空間電荷的分布。但受固體介質(zhì)的聲學特性和系統(tǒng)頻帶響應(yīng)的影響，所測信號的波形會產(chǎn)生畸變，一方面，信號幅值產(chǎn)生衰減，波形脈寬展寬；另一方面，信號產(chǎn)生過沖，嚴重影響對空間電荷形成機理及分布的判斷。針對引起波形畸變的兩個主要因素：介質(zhì)的衰減和色散及測量系統(tǒng)的頻帶響應(yīng)引起的非線性相位失真和損耗，綜述了國內(nèi)外關(guān)于不同固體電介質(zhì)形狀的空間電荷波形恢復(fù)的方法，對比了不同方法的恢復(fù)效果，并指出了基于PEA 的波形恢復(fù)的發(fā)展方向和要求。 關(guān)鍵詞： 空間電荷；電聲脈沖法；衰減；過沖；波形恢復(fù)
中圖分類號：TM933.23 文獻標識碼：A 文章編號：1007-3175(2013)09-0001-06
Study on Present Status of Test Signal Processing Based on Pulsed Electro-Acoustic
CHEN Sheng-ke, WANG Wei, GU Jie-feng, LI Fu-ping
Beijing Key Laboratory of High Voltage & EMC, North China Electric Power University, Beijing 102206, China
Abstract: Both at home and abroad, the pulsed electro-acoustic (PEA) method is commonly adopted to measure the space charge distribution in dielectrics, but the measured signal waveforms will generate distortion because of the impact of acoustic characteristics of solid dielectrics and the system band response. On the one hand, signal amplitude attenuates and pulse width broadens; on the other hand, the signal generates overshooting, which severely affects the judgement of formation mechanism and distribution of space charge. In allusion to the two main factors of dielectric attenuation and dispersion causing waveforms distortion, the nonlinear phase distortion and loss caused by system band response were measured. This paper described the space charge waveforms recovery method of different solid dielectrics shape at home and abroad and compared the recovery effects, pointing out the development direction and requirements of waveforms recovery based on PEA.
Key words: space charge; pulsed electro-acoustic (PEA); attenuation; overshoot; waveform recovery
參考文獻
[1] 孫紅梅，羅隆福，陸佳政，等.110/220 kV XLPE電纜絕緣在線監(jiān)測方法的研究[J]. 高電壓技術(shù)，2004，30(1)：28-30.
[2] Kao K C . Electrical conduction and breakdown in insulating polymers[C]//IEEE Dielectric sand Electrical Insulation Society, Proceedings of the 6th International Conference on Properties and Applications of Dielectric Materials, 2000, 1：1-17.
[3] Zhang Y W, Lewiner J, Alquie C, et al. Evidence of strong correlation between space-charge build up and breakdown in cable insulation[J].IEEE Transactions on Dielectrics and Electrical Insulation, 1996,3(6)：778-783.
[4] 吳瓊，朱永華，顧金，王俏華，尹毅.塑料絕緣直流高壓電纜中空間電荷測量技術(shù)的研究[J].電線電纜，2011(3)：22-25.
[5] 高田達雄.電聲脈沖法測量空間電荷的原理和方法[M].西安：西安交通大學出版社，1995.
[6] Li Y, Aihara M, Murata K, et al. Space charge measurement in thick dielectric materials by pulsed electroacoustic method[J].Review of Scientific Instruments, 1995, 66(7)：3909-3916.
[7] Tanaka Y , Hanawa K , Suzuki K , etal .Attenuation recovery technique for acoustic wave propagation in PEA method[C]//IEEE International Symposiumon Electrical Insulating Materials, 2001：407-410.
[8] 彭勇.基于聲衰減的PEA空間電荷波形恢復(fù)的研究[D].北京：華北電力大學，2010.
[9] 吳超一， 鐘力生， 王霞， 屠德民. 脈沖電聲法空間電荷測量中波形過沖的糾正[J]. 絕緣材料，2005(6)：44-47.
[10] 吳超一，鐘力生，王霞，屠德民.脈沖電聲法空間電荷測量波形恢復(fù)的數(shù)據(jù)處理[J].中國電機工程學報，2005，25(16)：137-140.
[11] 莫祖森，李海平，黃書榮，汪博.PEA空間電荷波形恢復(fù)的數(shù)據(jù)處理法[J].電工技術(shù)，2009(4)：21-23.
[12] 朱用昌，屠德民. 固體電介質(zhì)中空間電荷分布測量的新方法——電聲法[J]. 中國電機工程學報，1993，13(S1)：19-24.
[13] 劉越，朱用昌，屠德民. 固體介質(zhì)中空間電荷分布測量的頻域分析電聲脈沖法[J]. 電工技術(shù)學報，1994(1)：44-49.
[14] 扈羅全，鄭飛虎，張冶文. 用于電介質(zhì)中空間電荷分布測量的Tikhonov 反卷積算法[J]. 計算物理，2004，21(5)：432-438.
[15] 扈羅全， 鄭飛虎， 張冶文. 迭代正則化方法求解電介質(zhì)中空間電荷分布[J]. 計算物理，2005，22(1)：88-93.
[16] 田冀煥，鄒軍，袁建生，周遠翔.應(yīng)用改進脈沖電聲法的空間電荷波形恢復(fù)技術(shù)[J].中國電機工程學報，2010，30(10)：113-118.
[17] Morshuis P , Jeroense M . Space charge measurements on impregnated paper : a review of the PEA method and a discussion of results[J].IEEE Electrical Insulation Magazine, 1997, 13(3)：26-35.
[18] Takeda T, Hozumi N, Suzuki H, et al. Space charge behavior in full-size 250 kV DC XLPE cables[J].IEEE Transactions on Power Delivery, 1998, 13(1)：28-39.
[19] Hole S, Ditchi T, Lewiner A. Non-destructive methods for space charge distribution measurements: what are the differences[J].IEEE Transactions on Dielectrics and Electrical Insulation, 2003, 10(4)：670-677.
[20] Takada T, Hozumi N. Space charge measurements as a diagnostic tool for power cables[C]//IEEE Power Engineering Society Winter Meeting, 2000, 3：1609-1614.
[21] Fukunaga K . Progress in space charge measurement techniques and their industrial applications[C]//IEEE International Conference on Solid Dielectrics, 2007：432-437.
[22] 馮若.超聲手冊[K].南京：南京大學出版社，1999.
[23] Fu M, Chen G, Davies A E, et al. Space charge measurements in power cables using a modified PEA system[C]//Proceeding 8th International Confabulation on Dielectric Materials,Measurements and Applications, 2000：74-79.
[24] Fu M, Chen G. Space charge measurement in polymer insulated power cables using flat ground electrode PEA system[J]. IEE Proceedings - Science , Measurementand Technology, 2003, 150(2)：89-96.
[25] Fu M, Chen G, Davies A E, et al. A modified PEA space charge measuring system for power cables[C]//IEEE Proceedings of the 6th International Conference on Properties and Applications of Dielectric Materials, 2000, 1：104-107.
[26] 蔡川.高壓直流塑料電纜空間電荷測試和分析技術(shù)研究[D].上海：上海交通大學，2009.
[27] 蔡川，李旭光，尹毅，等. 空間電荷測量信號恢復(fù)中的頻域反卷積技術(shù)及實現(xiàn)[J]. 電工技術(shù)學報，2009，24(10)：165-169.
[28] Vissouvanadin B, Laurent C, Le Roy S, et al.A deconvolution technique for space charge recovery in lossy and dispersive dielectrics using PEA method[C]//IEEE Annual Report Conference on Electrical Insulation and Dielectric Phenomena, 2010：1-4.
[29] Maeno T, Fukunaga K. High-resolution PEA charge distribution measurement system[J].IEEE Transactions on Dielectrics and Electrical Insulation, 1996, 3(6)：754-757.
[30] Maeno T. Portable space charge measurement system using the pulsed electrostatic method[J].IEEE Transactions on Dielectrics and Electrical Insulation, 2003, 10(2)：331-335.
[31] 劉君，吳廣寧，周凱，等.基于電聲脈沖法的空間電荷測量裝置[J].高電壓技術(shù)，2009，35(3)：607-612.
[32] 周凱，吳廣寧，劉君，等. 基于電聲脈沖法的空間電荷直接測量儀的研制[J]. 儀器儀表學報，2008，29(10)：2110-2115.
