输电线路高频融冰大功率激励电源设计与控制方法
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摘要
本文设计了一种高频融冰大功率激励电源模块化结构。输入侧应用多重化PWM可控整流和功率单元输入载波相移技术,对输入谐波和功率因数控制;组合逆变器采用相移SPWM技术以克服大功率开关器件开关频率低无法输出高频的难点,并采用输入均压、输出均流的控制策略,各单元间通过均压、均流母线相互通信,抑制了功率单元并联结构产生的环流。搭建的融冰电源仿真试验结果表明:该融冰激励源输出频率可达到40 k Hz,输出电压稳定,谐波含量少,控制方便,为输电线路新型融冰装置研发提供了技术参考。
In this paper,a model of high-frequency excitation de-icing large power source for transmission lines is designed. The multiple PWM controlled rectifier and the carrier phase shift control technology for power unit input are adapted at the input side to realize the control of the input harmonic and power factor. Phase shift SPWM technology is used to overcome the difficulty of output high frequency voltage with low switching frequency devices. The control strategy of the input voltage and output current equalization sharing is carried out. Each unit communicates through equal voltage bus and equal current bus,thus the circulation current problem caused by power unit parallel output is solved. The results of simulation experiment of de-icing large power source show that the output frequency of the de-icing source is up to 40 k Hz,and this solution has characteristics of steady output voltage with lowharmonic,easy to control,which provides a technical reference for de-icing equipment development of transmission lines.
In this paper,a model of high-frequency excitation de-icing large power source for transmission lines is designed. The multiple PWM controlled rectifier and the carrier phase shift control technology for power unit input are adapted at the input side to realize the control of the input harmonic and power factor. Phase shift SPWM technology is used to overcome the difficulty of output high frequency voltage with low switching frequency devices. The control strategy of the input voltage and output current equalization sharing is carried out. Each unit communicates through equal voltage bus and equal current bus,thus the circulation current problem caused by power unit parallel output is solved. The results of simulation experiment of de-icing large power source show that the output frequency of the de-icing source is up to 40 k Hz,and this solution has characteristics of steady output voltage with lowharmonic,easy to control,which provides a technical reference for de-icing equipment development of transmission lines.
引文
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[9]刘顺新,罗浩东,邓小磊.架空输电线路除冰技术分析[J].高压电器,2011,47(3):72-76.LIU Shunxin,LUO Haodong,DENG Xiaolei.Analysis of deicing methods for overhead transmission lines[J].High Voltage Apparatus,2011,47(3):72-76.
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[13]倪喜军,赵剑锋,杨铭,等.基于高频谐振集肤电流法的线路除冰研究[J].电力自动化设备,2009,29(2):6-9.NI Xijun,ZHAO Jianfeng,YANG Ming,et al.Transmission line de-icing based on high frequency resonance skin current[J].Electric Pow er Automation Equipment,2009,29(2):6-9.
[14]焦重庆,齐磊,崔翔,等.输电线路外施中频电源融冰技术[J].电工技术学报,2010,25(7):159-164.JIAO Chongqing,QI Lei,CUI Xiang,et al.Pow er line deicing using medium frequency pow er source[J].Transactions of China Electrotechnical Society,2010,25(7):159-164.
[15]王红斌,王琦,崔翔.输电线路高频高压激励融冰技术研究[J].广东电力,2009,22(8):21-24,36.WANG Hongbin,WANG Qi,CUI Xiang.Research on deicing power transmission lines with high-frequency and high-voltage excitation[J].Guangdong Electric Power,2009,22(8):21-24,36.
[16]龙启,娄素华,吴耀武,等.输电线路高频高压融冰分析[C].第四届全国架空输电线路技术交流研讨会,2013,武汉.
[17]钟鈜州,刘明光,张雪亮.高频交流与直流短路融冰比较研究[J].中国电力,2014,47(9):94-99.ZHONG Hongzhou,LIU Mingguang,ZHANG Xueliang.Comparative study on melting ice with high frequency AC and DC short circuit method[J].Electric Power,2014,47(9):94-99.
[18]周羽生,陈佩瑶,高小刚,等.基于高频高压激励法的输电线路融冰方法研究[J].电瓷避雷器,2011(6):1-4,10.ZHOU Yusheng,CHEN Peiyao,GAO Xiaogang,et al.Research on transmission line de-icing method based on high-frequency and high-voltage excitation[J].Insulators and Surge Arresters,2011(6):1-4,10.
[19]刘让姣,周羽生,安正洲,等.输电线路激励融冰的阻波方法研究[J].南方电网技术,2014,8(2):88-91.LIU Rangjiao,ZHOU Yusheng,AN Zhengzhou,et al.Research on w ave-trapping method for incentive de-icing of Pow er transmission lines[J].Southern Pow er System Technology,2014,8(2):88-91.
[20]敬华兵,年晓红.电气化铁路接触网直流融冰技术及装置研制[J].电工技术学报,2012,27(9):277-284.JING Huabing,NIAN Xiaohong.Catenary DC ice-melting technology and device development of electrified railw ay[J].Transactions of China Electrotechnical Society,2012,27(9):277-284.
[21]陈武,阮新波,颜红.多变换器模块化串并联组合系统[J].电工技术学报,2009,24(6):56-61.CHEN Wu,RUAN Xinbo,YAN Hong.M odularization structure for series-parallel connected converters[J].Transactions of China Electrotechnical Society,2009,24(6):56-61.
[22]JOVANOVIC M M,CROW D E,LIEU Fangyi.A novel,lowcost implementation of democratic load-current sharing of paralleled converter modules[J].IEEE Transactions on Pow er Electronics,1996,11(4):604-611.
[23]王立乔,齐飞.级联型多电平变流器新型载波相移SPWM研究[J].中国电机工程学报,2010,30(3):28-34.WANG Liqiao,QI Fei.Novel carrier phase-shifted SPWM for cascade multilevel converter[J].Proceedings of the CSEE,2010,30(3):28-34.
[2]赵国帅,李兴源,傅闯,等.线路交直流融冰技术综述[J].电力系统保护与控制,2011,39(14):148-154.ZHAO Guoshuai,LI Xingyuan,FU Chuang,et al.Overview of de-icing technology for transmission lines[J].Pow er System Protection and Control,2011,39(14):148-154.
[3]巢亚锋,岳一石,王成,等.输电线路融冰、除冰技术研究综述[J].高压电器,2016,52(11):1-9,24.CAO Yafeng,YUE Yishi,WANG Cheng,et al.De-icing techniques for ice-covered transmission lines:a review[J].High Voltage Apparatus,2016,52(11):1-9,24.
[4]何青,吕锡锋,赵晓彤.激励条件下高压输电线路除冰技术应用研究[J].中国电机工程学报,2014,34(18):2997-3003.HE Qing,LXifeng,ZHAO Xiaotong.Research on application of de-icing technology on high voltage transmission line under the condition of incentive[J].Proceedings of the CSEE,2014,34(18):2997-3003.
[5]陆佳政,谭艳军,李波,等.特高压直流输电线路分段直流融冰方案[J].高电压技术,2013,39(3):541-545.LU Jiazheng,TAN Yanjun,LI Bo,et al.Segmented DC icemelting solution of UHV DC transmission lines[J].High Voltage Engineering,2013,39(3):541-545.
[6]陆佳政,吴传平,李波,等.直流融冰装置拓扑结构的比较研究[J].电力系统保护与控制,2014,42(13):83-88.LU Jiazheng,WU Chuanping,LI Bo,et al.Comparative research on topology of DC de-icing equipment[J].Pow er System Protection and Control,2014,42(13):83-88.
[7]陆佳政,朱思国,李波,等.兼具无功补偿与有源滤波功能的新型融冰装置[J].高电压技术,2016,42(7):2207-2214.LU Jiazheng,ZHU Siguo,LI Bo,et al.New ice-melting device w ith function of reactive pow er compensation and active filtering[J].High Voltage Engineering,2016,42(7):2207-2214.
[8]敬华兵,年晓红.输电线路柔性直流融冰技术[J].高电压技术,2012,38(11):3060-3066.JING Huabing,NIAN Xiaohong.Flexible DC ice-melting technology for transmission line[J].High Voltage Engineering,2012,38(11):3060-3066.
[9]刘顺新,罗浩东,邓小磊.架空输电线路除冰技术分析[J].高压电器,2011,47(3):72-76.LIU Shunxin,LUO Haodong,DENG Xiaolei.Analysis of deicing methods for overhead transmission lines[J].High Voltage Apparatus,2011,47(3):72-76.
[10]蒋兴良,毕茂强,黎振宇,等.自然条件下导线直流融冰与脱冰过程研究[J].电网技术,2013,37(9):2626-2631.JIANG Xingliang,BI M aoqiang,LI Zhenyu,et al.Study on DC ice melting and ice shedding process under natural condition[J].Power System Technology,2013,37(9):2626-2631.
[11]MCCURDY J D,SULLIVAN C R,PETRENKO V F,et al.Using dielectric losses to de-ice pow er transmission lines w ith 100k Hz high voltage excitation[C]//Thirty-sixth IAS Annual Meeting Conference Record of the 2001 IEEE,September 30-October 4,2001,Chicago,USA.New York:IEEE,2001:2515-2519.
[12]SULLIVAN C R,PETRENKO V F,MCCURDY J D,et al.Breakingthe ice:de-icing pow er transmission lines w ith high frequency,high-voltage excitation[J].IEEE Industry Applications,2003(9):49-54.
[13]倪喜军,赵剑锋,杨铭,等.基于高频谐振集肤电流法的线路除冰研究[J].电力自动化设备,2009,29(2):6-9.NI Xijun,ZHAO Jianfeng,YANG Ming,et al.Transmission line de-icing based on high frequency resonance skin current[J].Electric Pow er Automation Equipment,2009,29(2):6-9.
[14]焦重庆,齐磊,崔翔,等.输电线路外施中频电源融冰技术[J].电工技术学报,2010,25(7):159-164.JIAO Chongqing,QI Lei,CUI Xiang,et al.Pow er line deicing using medium frequency pow er source[J].Transactions of China Electrotechnical Society,2010,25(7):159-164.
[15]王红斌,王琦,崔翔.输电线路高频高压激励融冰技术研究[J].广东电力,2009,22(8):21-24,36.WANG Hongbin,WANG Qi,CUI Xiang.Research on deicing power transmission lines with high-frequency and high-voltage excitation[J].Guangdong Electric Power,2009,22(8):21-24,36.
[16]龙启,娄素华,吴耀武,等.输电线路高频高压融冰分析[C].第四届全国架空输电线路技术交流研讨会,2013,武汉.
[17]钟鈜州,刘明光,张雪亮.高频交流与直流短路融冰比较研究[J].中国电力,2014,47(9):94-99.ZHONG Hongzhou,LIU Mingguang,ZHANG Xueliang.Comparative study on melting ice with high frequency AC and DC short circuit method[J].Electric Power,2014,47(9):94-99.
[18]周羽生,陈佩瑶,高小刚,等.基于高频高压激励法的输电线路融冰方法研究[J].电瓷避雷器,2011(6):1-4,10.ZHOU Yusheng,CHEN Peiyao,GAO Xiaogang,et al.Research on transmission line de-icing method based on high-frequency and high-voltage excitation[J].Insulators and Surge Arresters,2011(6):1-4,10.
[19]刘让姣,周羽生,安正洲,等.输电线路激励融冰的阻波方法研究[J].南方电网技术,2014,8(2):88-91.LIU Rangjiao,ZHOU Yusheng,AN Zhengzhou,et al.Research on w ave-trapping method for incentive de-icing of Pow er transmission lines[J].Southern Pow er System Technology,2014,8(2):88-91.
[20]敬华兵,年晓红.电气化铁路接触网直流融冰技术及装置研制[J].电工技术学报,2012,27(9):277-284.JING Huabing,NIAN Xiaohong.Catenary DC ice-melting technology and device development of electrified railw ay[J].Transactions of China Electrotechnical Society,2012,27(9):277-284.
[21]陈武,阮新波,颜红.多变换器模块化串并联组合系统[J].电工技术学报,2009,24(6):56-61.CHEN Wu,RUAN Xinbo,YAN Hong.M odularization structure for series-parallel connected converters[J].Transactions of China Electrotechnical Society,2009,24(6):56-61.
[22]JOVANOVIC M M,CROW D E,LIEU Fangyi.A novel,lowcost implementation of democratic load-current sharing of paralleled converter modules[J].IEEE Transactions on Pow er Electronics,1996,11(4):604-611.
[23]王立乔,齐飞.级联型多电平变流器新型载波相移SPWM研究[J].中国电机工程学报,2010,30(3):28-34.WANG Liqiao,QI Fei.Novel carrier phase-shifted SPWM for cascade multilevel converter[J].Proceedings of the CSEE,2010,30(3):28-34.