Stochastic Time Domain Calculation Model for Radio Interference from DC Conductor
Li Xuebao1, Wu Haotian2, Cheng Luying3, Sun Chao2
1. State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources North China Electric Power University Beijing 102206 China; 2. State Grid Zhejiang Hangzhou Qiantang New Area Power Supply Company Hangzhou 311225 China; 3. Zhejiang Tiandi Environmental Protection Technology Co. Ltd Hangzhou 311100 China
Abstract:The stochastic radio interference pulses can be generated from the corona discharge from DC transmission lines. At present, the measurement and prediction of radio interference were mainly based on the method in frequency domain, which cannot reflect the stochastic pulse nature characteristics of the corona-generated radio interference. In this paper, a time domain measurement platform for DC corona radio interference from single conductor is built in the laboratory. The time domain measurement of DC corona generated radio interference from positive single conductor is realized by using time domain whip antenna. The statistical characteristics of radio interference waveform parameters, including amplitude, repetitive frequency, rise time and duration time, are analyzed in detail. Based on the time domain statistical characteristics, the stochastic time domain prediction model of radio interference from single conductor is established. In the model, the generation of stochastic pulses, attenuation of pulses, calculation of electric field in time domain and the construction of electric field pulses are included. The validity of the model is verified by comparing the quasi-peak values of the calculated results and measurement results in which the difference between them is less than 2dB.
李学宝, 吴昊天, 程璐莹, 孙超. 直流电晕放电无线电干扰随机时域计算模型研究[J]. 电工技术学报, 2023, 38(6): 1531-1540.
Li Xuebao, Wu Haotian, Cheng Luying, Sun Chao. Stochastic Time Domain Calculation Model for Radio Interference from DC Conductor. Transactions of China Electrotechnical Society, 2023, 38(6): 1531-1540.
[1] 张文亮, 于永清, 李光范, 等. 特高压直流技术研究[J]. 中国电机工程学报, 2007, 27(22): 1-7. Zhang Wenliang, Yu Yongqing, Li Guangfan, et al.Researches on UHVDC technology[J]. Proceedings of the CSEE, 2007, 27(22): 1-7. [2] 杨勇, 谢莉. 平行和交叉跨越直流模拟试验线段三维电场的一种计算方法[J]. 电气技术, 2021, 22(1): 14-18. Yang Yong, Xie Li.A calculation method for three-dimensional electric fields of parallel and crossed DC simulation test line sections[J]. Electrical Engineering, 2021, 22(1): 14-18. [3] 谷琛, 李鹏, 何慧雯, 等. ±1100kV以上电压等级直流输电技术研究[J]. 中国电机工程学报, 2020, 40(20): 6745-6754. Gu Chen, Li Peng, He Huiwen, et al.Research on ±1100kV and above UHV DC transmission technologies[J]. Proceedings of the CSEE, 2020, 40(20): 6745-6754. [4] 赵录兴, 小布穷, 王炳强, 等. 高海拔地区±500 kV直流线路电磁环境试验研究及导线选型[J]. 电网技术, 2021, 45(2): 794-801. Zhao Luxing, Xiao Buqiong, Wang Bingqiang, et al.Experimental research and conductor selection on electromagnetic environment of ±500 kV DC transmission line at high altitude[J]. Power System Technology, 2021, 45(2): 794-801. [5] Maruvada P S, Trinh N G, Dallaire D, et al.Corona performance of a conductor bundle for bipolar HDVC transmission at ±750 kV[J]. IEEE Transactions on Power Apparatus and Systems, 1977, 96(6): 1872-1881. [6] Maruvada P S.Corona performance of high-voltage transmission lines[M]. Baldock: Research Studies Press, 2000 [7] 谢莉, 赵录兴, 陆家榆, 等. 有限长高压直流输电线路无线电干扰电磁场的计算方法研究[J]. 电工技术学报, 2016, 31(1): 96-102. Xie Li, Zhao Luxing, Lu Jiayu, et al.Study on the calculation method for radio interference electromagnetic field of HVDC transmission line with finite length[J]. Transactions of China Electrotechnical Society, 2016, 31(1): 96-102. [8] 李学宝, 吴昊天, 马浩, 等. 基于无线电干扰时域测量系统的直流单点电晕放电定位方法[J]. 电工技术学报, 2020, 35(22): 4816-4824. Li Xuebao, Wu Haotian, Ma Hao, et al.Location method for DC single corona discharge point based on radio interference time domain test system[J]. Transactions of China Electrotechnical Society, 2020, 35(22): 4816-4824. [9] 程露莹, 李学宝, 马浩, 等. 直流单点电晕放电无线电干扰和可听噪声时域关联特性分析[J]. 高电压技术, 2019, 45(12): 4088-4095. Cheng Luying, Li Xuebao, Ma Hao, et al.Time-domain correlation between audible noise and radio interference caused by single positive corona source on the conductor[J]. High Voltage Engineering, 2019, 45(12): 4088-4095. [10] International Electrotechnical Commission.CISPR TR 18—2—2010, Radio interference characteristics of overhead power lines and high-voltage equipment-part 2: methods of measurement and procedure for determining limits[S]. Pretoria: SABS Standards Division, 2010. [11] Haussmann B.Interference produced by corona effect of electric systems[R]. Paris: CIGRE Committee. 1974. [12] Moreau M R, Gary C H. Predetermination of the radio-interference level of high voltage transmission lines I-predetermination of the excitation function[J]. IEEE Transactions on Power Apparatus and Systems, 1972, PAS-91(1): 284-291. [13] Li Zhen, Zhang Bo, He Jinliang.Influence of wave propagation process on measurement of corona current[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2014, 21(1): 201-208. [14] Urban R G, Reader H C, Holtzhausen J P.Small corona cage for wideband HVAC radio noise studies: rationale and critical design[J]. IEEE Transactions on Power Delivery, 2008, 23(2): 1150-1157. [15] Yuan Haiwen, Yang Qinghua, Liu Yuanqing, et al.Development and application of high-frequency sensor for corona current measurement under ultra high-voltage direct-current environment[J]. IEEE Transactions on Instrumentation and Measurement, 2012, 61(4): 1064-1071. [16] Yin Han, Zhang Bo, He Jinliang, et al.Measurement of positive direct current corona pulse in coaxial wire-cylinder gap[J]. Physics of Plasmas, 2014, 21(3): 032116. [17] 刘阳. 高压直流导线电晕电流脉冲的时域特性研究[D]. 北京: 华北电力大学, 2015. [18] 张和. 高压输电线路无线电干扰的时域测量方法[D]. 北京: 华北电力大学, 2016. [19] 李大勇. 高压输电线路无线电干扰时域测量方法及应用[D]. 北京: 华北电力大学, 2018. [20] Li Xuebao, Li Dayong, Chen Bo, et al.Measurement and analysis of time-domain characteristics of corona-generated radio interference from a single positive corona source[J]. Physics of Plasmas, 2018, 25(4): 043510. [21] 李学宝. 高压直流导线电晕放电的可听噪声时域特性及其计算模型研究[D]. 北京: 华北电力大学, 2016. [22] Liu Yang, Cui Xiang, Lu Tiebing, et al.Quasi-peak response of EMI receiver to corona pulses[C]//2015 IEEE International Instrumentation and Measurement Technology Conference (I2MTC) Proceedings, Pisa, Italy, 2015: 68-73.