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±800kV同塔双回直流线路杆塔空气间隙的放电特性影响因素研究

DOI: 10.13334/j.0258-8013.pcsee.2014.18.015, PP. 2983-2989

Keywords: ±,800kV直流,同塔双回,空气间隙,冲击放电

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Abstract:

±800kV同塔双回线路电压等级较高,且杆塔形状和杆塔尺寸较±500、±660kV直流输电线路杆塔都有很大差别,因此其空气间隙的放电特性有不同特点。为选择合适的±800kV同塔双回直流线路空气间隙距离值,对影响±800kV同塔双回输电线路杆塔上、下层空气间隙冲击放电特性的因素进行了真型尺寸模拟试验研究。研究了下层塔身宽度对杆塔下层间隙操作冲击放电特性的影响,均压环尺寸对直流V串塔头空气间隙放电特性的影响,直流运行电压对塔头间隙冲击放电特性的影响,±800kV同塔双回输电线路杆塔下横担对上层间隙操作冲击放电特性的影响,并校核了下横担到上导线距离减小后杆塔的耐雷性能。研究结果表明:原有的塔身宽度对间隙操作冲击放电影响的修正公式已不适用于±800kV同塔双回直流线路塔头;均压环尺寸大小与放电电压正相关;导线直流电场对间隙的放电路径有明显影响,但对放电电压影响不大;杆塔上导线到下横担的间隙距离可适当减小,但间隙距离减小后,杆塔的反击耐雷性能及绕击耐雷性能都略有降低。该研究结果可用于指导±800kV同塔双回输电工程的设计。

References

[1]  张文亮,周孝信,郭剑波,等.±1000kV特高压直流在中国电网应用的可行性研究[J].中国电机工程学报,2007,27(28):1-5. Zhang Wenliang,,Zhou Xiaoxin,Guo Jianbo,et al.Feasibility of ±1 000 kV Ultra HVDC in the power grid of china[J].Proceedings of the CSEE,2007,27(28):1-5(in Chinese).
[2]  丁玉剑,廖蔚明,孙昭英,等.±1000kV直流输电线路塔头间隙冲击放电特性试验及海拔校正研究[J].中国电机工程学报,2011,31(34):156-164. Ding Yujian,Liao Weiming,Sun Zhaoying,et al.Experimental studies on impulse flashover characteristics of tower head air gaps of ±1000kV DC transmission lines and altitude correction methods [J].Proceedings of the CSEE,2011,31(34):156-164(in Chinese).
[3]  孙昭英,李斌.±500kV直流拉线杆塔空气间隙放电特性的研究[J].电网技术,1993,17(5):32-35. Sun Zhaoying,Li Bin.Studies on flashover characteristics of air gap of ±500kV DC tower under composite voltage [J].Power System Technology,1993,17(5):32-35(in Chinese).
[4]  张文亮,谷琛,廖蔚明,等.超/特高压直流输电线路塔头间隙冲击放电特性研究[J].中国电机工程学报,2010,30(1):1-5. Zhang Wenliang,Gu Chen,Liao Weiming,et al.Impulse voltage flashover characteristic of air gap in EHV/UHV DC transmission tower[J].Power System Technology,2010,30(1):1-5(in Chinese).
[5]  孙昭英,李庆峰,宿志一,等.±800 kV直流输电空气间隙外绝缘特性研究[J].中国电力,2006,39(10):47-51. Sun Zhaoying,Li Qingfeng,Su Zhiyi,et al.Study on external insulation of air gap of ±800 kV DC system [J].Electric Power,2006,39(10):47-51(in Chinese).
[6]  孙昭英,廖蔚明,宿志一,等.±800 kV直流输电工程空气间隙海拔校正系数试验研究[J].电网技术,2008,32(22):13-16. Sun Zhaoying,Liao Weiming,Su Zhiyi,et al.Test study on the altitude correction factors of air gaps of ±800 kV UHVDC projects[J].Power System Technology,2008,32(22):13-16(in Chinese).
[7]  宿志一,周军,高海峰,等.±800kV长串绝缘子污闪特性及绝缘子选择研究[J].中国电机工程学报,2009,29(22):94-99. Su Zhiyi,Zhou Jun,Gao Haifeng,et al.Study on pollution performance and insulation selection of ±800kV long sring insulators[J].Proceedings of the CSEE,2009,29(22):94-99(in Chinese).
[8]  傅观君,王黎明,侯镭,等.±800kV特高压直流耐张串应用复合绝缘子的可行性[J].中国电机工程学报,2011,31(22):119-125. Fu Guanjun,Wang Liming,Hou Lei,et al.Feasibility of application of composite insulators in ±800 kV UHV DC tension strings[J].Proceedings of the CSEE,2011,31(22):119-125(in Chinese).
[9]  邓桃,李庆峰,张学军,等.±800kV特高压直流线路均压环优化研究[J].中国电机工程学报,2009,29(22):100-106. Deng Tao,Li Qingfeng,Zhang Xuejun,The optimization of grading ring design for ±800kV UHV DC transmission lines[J].Proceedings of the CSEE,2009,29(22):100-106(in Chinese).
[10]  廖永力,李瑞海,李小建,等.典型空气间隙放电电压修正的试验研究[J].中国电机工程学报,2012,32(28):171-176. Liao Yongli,Li Ruihai,Li Xiaojian,et al.Experimental research on typical air gap test voltage correction [J].Proceedings of the CSEE,2012,32(28):171-176(in Chinese).
[11]  孙昭英,廖蔚明,丁玉剑,等.±800 kV直流输电工程空气间放电特性试验及间隙距离选择[J].电网技术,2008,32(22):8-12. Sun Zhaoying,Liao Weiming,Ding Yujian,et al.Air gap flashover characteristics and selection of gap distances for ±800 kV UHVDC transmission project[J].Power System Technology,2008,32(22):8-12(in Chinese).
[12]  廖蔚明,丁玉剑,孙昭英,等.高压直流输电线路V型串塔头间隙操作冲击放电电压的海拔校正[J].电网技术,2012,36(1):182-188. Liao Weiming,Ding Yujian,Sun Zhaoying,et al.Altitude correction of witching impulse flashover voltage of tower gaps with V-shaped Insulator Strings for HVDC Power Transmission Lines[J].Power System Technology,2012,36(1):182-188(in Chinese).
[13]  Yasuo Watanabe.Influence of pre-existing DC voltage on switching surge flashover characteristics[J].IEEE Transactions on Power Apparatus And Systems,1968,87(4):964-969.
[14]  Knudsen N,Liceto F.Flashover tests on large air gaps with DC voltage and with switching surges superimposed on DC voltage[J].IEEE Transactions on Power Apparatus And Systems,1970,89(5):781-788.
[15]  赵林杰,黎小林,孙昭英,等.±500 kV同塔双回线路杆塔空气间隙操作冲击放电特性试验研究[J].南方电网技术,2011,5(2):26-29. Zhao Linjie,Li Xiaolin,Sun Zhaoying,et al.Experiment study on the characteristics of switching impulse flashover at Air gaps on the tower with ±500 kV double-circuit lines[J].Southern Power System Technology,2011,5(2):26-29(in Chinese).
[16]  丁玉剑,李庆峰,廖蔚明,等.同塔双回±500kV直流线路杆塔上层空气间隙放电特性和耐雷性能试验研究[J].中国电机工程学报,2010,30(28):114-119. Ding Yujian,Li Qingfeng,Liao Weiming,et al.Flashover characteristics of upper air clearances and lightning withstand level for ±500kV DC double-circuit transmission line towers[J].Proceedings of the CSEE,2010,30(28):114-119(in Chinese). (编辑 胡琳琳)
[17]  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(in Chinese).
[18]  张文亮,廖蔚明,丁玉剑,等.不同海拔地区同塔双回±660 kV直流线路杆塔空气间隙距离的选择[J].中国电机工程学报,2008,28(5):1-6. Zhang Wenliang,Liao Weiming,Ding Yujian,et al.Selection of the minimum air clearance for ±660kV double-circuit DC transmission line tower in different altitude areas[J].Proceedings of the CSEE,2008,28(5):1-6(in Chinese).
[19]  廖蔚明,崔国华,孙昭英,等.±800 kV直流线路杆塔塔头空气间隙的直流叠加操作冲击放电特性.电网技术,2008,32(9):6-9. Liao Weiming,Cui Guohua,Sun Zhaoying,et al.Flashover test on air clearances of ±800 kV DC transmission tower with switching surges superimposed on DC voltage [J].Power System Technology,2008,32(9):6-9(in Chinese).

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