江苏500 kV电网限流电抗器雷电侵入波过电压特性
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摘要
雷电侵入波过电压对超高压输电系统限流电抗器构成重要威胁。本文建立了雷电侵入波下限流电抗器过电压计算简化模型,获得了限流电抗器与雷电入射波、限流电抗器电感、线路参数的关系表达式。采用EMTP建立了限流电抗器雷电侵入波仿真计算模型,包括杆塔的多波阻抗模型、绝缘子串闪络模型、GIS模型等,计算获得了不同杆塔冲击接地电阻、避雷器安装位置、雷电流波头时间、电容式电压互感器电容量下限流电压器过电压,并分析了上述因素对限流电抗器过电压影响机理。本文提出了两种限流电抗器雷电侵入波过电压的抑制措施拓扑,比较分析了其抑制效果,计算结果为限流电抗器的选型和防雷保护方案提供了参考。
The lightning intruding overvoltages threaten the safe operation of current-limiting inductor(CLI)in an extra high voltage power transmission system.In this paper,a simplified model for CLI under lightning intruding is set up atfirst. Then,the expressions of the relationships between the voltage of CLI and lightning intruding wave,inductance ofCLI,and parameters of transmission lines are obtained.Meanwhile,based on EMTP software,many models are estab-lished,including the lightning intruding model for CLI,multi-wave impedance model for transmission tower,flashovermodel for insulators,and transmission line model for gas insulated switchgear(GIS).Afterwards,the overvoltages ofCLI under different impulse grounding resistances of transmission tower,installation positions of metal oxide arresters,wave-front time of lightning current,and capacitances of capacitive voltage transformers(CVTs)are calculated,andthe effects of the above factors on the overvoltages of CLI are analyzed.Finally,two suppression measures of differenttopologies for the lightning intruding overvoltage of CLI are proposed,and their suppression effects are compared. The calculation results provide reference for the type selection and lightning protection scheme of CLI.
The lightning intruding overvoltages threaten the safe operation of current-limiting inductor(CLI)in an extra high voltage power transmission system.In this paper,a simplified model for CLI under lightning intruding is set up atfirst. Then,the expressions of the relationships between the voltage of CLI and lightning intruding wave,inductance ofCLI,and parameters of transmission lines are obtained.Meanwhile,based on EMTP software,many models are estab-lished,including the lightning intruding model for CLI,multi-wave impedance model for transmission tower,flashovermodel for insulators,and transmission line model for gas insulated switchgear(GIS).Afterwards,the overvoltages ofCLI under different impulse grounding resistances of transmission tower,installation positions of metal oxide arresters,wave-front time of lightning current,and capacitances of capacitive voltage transformers(CVTs)are calculated,andthe effects of the above factors on the overvoltages of CLI are analyzed.Finally,two suppression measures of differenttopologies for the lightning intruding overvoltage of CLI are proposed,and their suppression effects are compared. The calculation results provide reference for the type selection and lightning protection scheme of CLI.
引文
[1]阮前途(Ruan Qiantu).上海电网短路电流控制的现状与对策(Present situation of short circuit current control in Shanghai power grid and countermeasures)[J].电网技术(Power System Technology),2005,29(2):78-83.
[2]袁娟,刘文颖,董明齐,等(Yuan Juan,Liu Wenying,Dong Mingqi,et al).西北电网短路电流的限制措施(Application of measures limiting short circuit currents in northwest China power grid)[J].电网技术(Power System Technology),2007,31(10):42-45.
[3]石晶,邹积岩,何俊佳,等(Shi Jing,Zou Jiyan,He Junjia,et al).故障电流限制技术及研究进展(Development of fault current limiting technique and its progress)[J].电网技术(Power System Technology),1999,23(12):63-66.
[4]黄旭,何洪英,罗滇生,等(Huang Xu,He Hongying,Luo Diansheng,et al).一种新的短路电流预测方法(A novel prediction method of short-circuit current)[J].电力系统及其自动化学报(Proceedings of the CSU-EPSA),2017,29(1):24-29.
[5]陈水明,王威,杨鹏程(Chen Shuiming,Wang Wei,Yang Pengcheng).限流电抗器对输电线路工频过电压的影响(Effects of current-limiting inductor on power frequency overvoltages in transmission line)[J].电网技术(Power System Technology),2010,34(3):193-196.
[6] Amon F J,Fernandez P C,Rose E H,et al.巴西在将限流电抗器用于短路电流限制方面取得的成功经验(Successful experiences about application of limited-reactor for short-circuit current limitation control of the Brazil)[J].电气应用(Electrotechnical Application),2006,25(1):4-8.
[7]庄侃沁,陶荣明,尹凡(Zhuang Kanqin,Tao Rongming,Yin Fan).采用串联电抗器限制500 k V短路电流在华东电网的应用(Using series reactors to limit 500 kV short-circuit current for East China Power Grid)[J].华东电力(East China Electric Power),2009,37(3):440-443.
[8]陈梁金,李思南,谢鹏,等(Chen Liangjin,Li Sinan,Xie Peng,et al). 750 kV GIS变电站雷电侵入波过电压的研究(Study on the lightning intruding over voltage in 750kV GIS substation)[J].高电压技术(High Voltage Engineering),2006,32(8):18-21.
[9]袁兆祥,周洪伟(Yuan Zhaoxiang,Zhou Hongwei). 500kV HGIS变电站雷电侵入波的计算分析(Calculation and study of lightning intruding surge for 500 kV HGIS substation)[J].高电压技术(High Voltage Engineering),2007,33(6):71-75,79.
[10]高飞,陈维江,刘之方,等(Gao Fei,Chen Weijiang,Liu Zhifang,et al). 1 000 kV交流输电系统串补站的雷电侵入波保护(Protection of series compensation station against lightning intruded wave in 1 000 k V AC transmission system)[J].高电压技术(High Voltage Engineering),2010,36(9):2199-2205.
[11]胡振兴,刘渝根,张勇,等(Hu Zhenxing,Liu Yugen,Zhang Yong,et al). 500 k V升压站雷电侵入波过电压影响因素分析(Study on influence factors of lightning invasion wave overvoltage in 500 kV step-up substation)[J].电磁避雷器(Insulators and Surge Arresters),2015(2):50-55.
[12]张纬钹,何金良,高玉明.过电压防护及绝缘配合[M].北京:清华大学出版社,2000.
[13]祝瑞金,蒋跃强,杨增辉,等(Zhu Ruijin,Jiang Yue-qiang,Yang Zenghui,et al).串联电抗器限流技术的应用研究(Application study of series reactor current limiting technology)[J].华东电力(East China Electric Power),2005,33(5):18-22.
[14]江苏电力调度通信中心.江苏电网串联电抗器应用研究技术报告[R].南京:江苏电力调度通信中心,2010.
[15]张永记,司马文霞,张志劲(Zhang Yongji,Sima Wenxia,Zhang Zhijin).防雷分析中杆塔模型的研究现状(Summary of the study of tower models for lightning protection analysis)[J].高电压技术(High Voltage Engineering),2006,32(7):93-97.
[16] Yamada T,Mochizuki A,Sawada J,et al. Experimental evaluation of a UHV tower model for lightning surge analysis[J]. IEEE Trans on Power Delivery,1995,10(1):393-402.
[17] Hara T,Yamamoto O. Modeling of a transmission tower for lightning-surge analysis[J]. IEE Proceedings-Generation,Transmission and Distribution,1996,143(3):283-289.
[18] DL/T 620,交流电气装置的过电压保护和绝缘配合[S].
[2]袁娟,刘文颖,董明齐,等(Yuan Juan,Liu Wenying,Dong Mingqi,et al).西北电网短路电流的限制措施(Application of measures limiting short circuit currents in northwest China power grid)[J].电网技术(Power System Technology),2007,31(10):42-45.
[3]石晶,邹积岩,何俊佳,等(Shi Jing,Zou Jiyan,He Junjia,et al).故障电流限制技术及研究进展(Development of fault current limiting technique and its progress)[J].电网技术(Power System Technology),1999,23(12):63-66.
[4]黄旭,何洪英,罗滇生,等(Huang Xu,He Hongying,Luo Diansheng,et al).一种新的短路电流预测方法(A novel prediction method of short-circuit current)[J].电力系统及其自动化学报(Proceedings of the CSU-EPSA),2017,29(1):24-29.
[5]陈水明,王威,杨鹏程(Chen Shuiming,Wang Wei,Yang Pengcheng).限流电抗器对输电线路工频过电压的影响(Effects of current-limiting inductor on power frequency overvoltages in transmission line)[J].电网技术(Power System Technology),2010,34(3):193-196.
[6] Amon F J,Fernandez P C,Rose E H,et al.巴西在将限流电抗器用于短路电流限制方面取得的成功经验(Successful experiences about application of limited-reactor for short-circuit current limitation control of the Brazil)[J].电气应用(Electrotechnical Application),2006,25(1):4-8.
[7]庄侃沁,陶荣明,尹凡(Zhuang Kanqin,Tao Rongming,Yin Fan).采用串联电抗器限制500 k V短路电流在华东电网的应用(Using series reactors to limit 500 kV short-circuit current for East China Power Grid)[J].华东电力(East China Electric Power),2009,37(3):440-443.
[8]陈梁金,李思南,谢鹏,等(Chen Liangjin,Li Sinan,Xie Peng,et al). 750 kV GIS变电站雷电侵入波过电压的研究(Study on the lightning intruding over voltage in 750kV GIS substation)[J].高电压技术(High Voltage Engineering),2006,32(8):18-21.
[9]袁兆祥,周洪伟(Yuan Zhaoxiang,Zhou Hongwei). 500kV HGIS变电站雷电侵入波的计算分析(Calculation and study of lightning intruding surge for 500 kV HGIS substation)[J].高电压技术(High Voltage Engineering),2007,33(6):71-75,79.
[10]高飞,陈维江,刘之方,等(Gao Fei,Chen Weijiang,Liu Zhifang,et al). 1 000 kV交流输电系统串补站的雷电侵入波保护(Protection of series compensation station against lightning intruded wave in 1 000 k V AC transmission system)[J].高电压技术(High Voltage Engineering),2010,36(9):2199-2205.
[11]胡振兴,刘渝根,张勇,等(Hu Zhenxing,Liu Yugen,Zhang Yong,et al). 500 k V升压站雷电侵入波过电压影响因素分析(Study on influence factors of lightning invasion wave overvoltage in 500 kV step-up substation)[J].电磁避雷器(Insulators and Surge Arresters),2015(2):50-55.
[12]张纬钹,何金良,高玉明.过电压防护及绝缘配合[M].北京:清华大学出版社,2000.
[13]祝瑞金,蒋跃强,杨增辉,等(Zhu Ruijin,Jiang Yue-qiang,Yang Zenghui,et al).串联电抗器限流技术的应用研究(Application study of series reactor current limiting technology)[J].华东电力(East China Electric Power),2005,33(5):18-22.
[14]江苏电力调度通信中心.江苏电网串联电抗器应用研究技术报告[R].南京:江苏电力调度通信中心,2010.
[15]张永记,司马文霞,张志劲(Zhang Yongji,Sima Wenxia,Zhang Zhijin).防雷分析中杆塔模型的研究现状(Summary of the study of tower models for lightning protection analysis)[J].高电压技术(High Voltage Engineering),2006,32(7):93-97.
[16] Yamada T,Mochizuki A,Sawada J,et al. Experimental evaluation of a UHV tower model for lightning surge analysis[J]. IEEE Trans on Power Delivery,1995,10(1):393-402.
[17] Hara T,Yamamoto O. Modeling of a transmission tower for lightning-surge analysis[J]. IEE Proceedings-Generation,Transmission and Distribution,1996,143(3):283-289.
[18] DL/T 620,交流电气装置的过电压保护和绝缘配合[S].