高速铁路隧道综合接地系统接地特性分析
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摘要
高速铁路隧道综合接地系统连接结构极为复杂,接地工程隐蔽,接地系统特性直接关系到隧道内电气设备运行安全。为研究高速铁路隧道综合接地系统的接地特性,对高速铁路Ⅰ、Ⅱ级围岩隧道和Ⅲ～Ⅴ级围岩隧道综合接地系统建立仿真计算模型,计算分析两类隧道综合接地系统在不同土壤电阻率和不同隧道长度时的接地阻抗特性,以及隧道洞室内电力设施接地端子处的接地阻抗和地电位升特性。计算结果表明:Ⅰ、Ⅱ级围岩隧道和Ⅲ～Ⅴ级围岩隧道综合接地系统可以满足GB 50065—2011规定的接地安全限值;高速铁路隧道洞室内箱变等电力设施不需要布设独立接地装置,直接与隧道综合接地系统可靠相连即可。研究成果已在金温铁路扩能改造工程建设中成功应用,效果良好。
The concealed connection structure of the high speed railway tunnel integrated grounding system is very complex,and the characteristics of the grounding system are directly related to the safety of the electrical equipment in the tunnel. In order to study the grounding characteristics of the high speed railway tunnel integrated grounding system,a simulation model is established for the tunnel integrated grounding systems of high speed railway Ⅰ,Ⅱ and Ⅲ to V surrounding rock tunnels. The grounding impedance characteristics of the tunnel integrated grounding system with different soil resistivity and different tunnel length as well as the grounding impedance and ground potential rise characteristics at the grounding terminal of the electric power facilities in tunnel chambers are calculated and analyzed. The results show that the comprehensive grounding systems of grade Ⅰ and Ⅱ surrounding rock tunnels and grade Ⅲ to Ⅴ surrounding rock tunnels can meet the grounding safety limits specified in GB 50065-2011. No independent grounding device is required for electric power such facilities as tunnel chamber box-type transformer of high-speed railway tunnel, which can be directly connected to the tunnel integrated grounding system. The research results have been applied in Jin-Wen high speed railway expansion and reformation project and good effect achieved.
The concealed connection structure of the high speed railway tunnel integrated grounding system is very complex,and the characteristics of the grounding system are directly related to the safety of the electrical equipment in the tunnel. In order to study the grounding characteristics of the high speed railway tunnel integrated grounding system,a simulation model is established for the tunnel integrated grounding systems of high speed railway Ⅰ,Ⅱ and Ⅲ to V surrounding rock tunnels. The grounding impedance characteristics of the tunnel integrated grounding system with different soil resistivity and different tunnel length as well as the grounding impedance and ground potential rise characteristics at the grounding terminal of the electric power facilities in tunnel chambers are calculated and analyzed. The results show that the comprehensive grounding systems of grade Ⅰ and Ⅱ surrounding rock tunnels and grade Ⅲ to Ⅴ surrounding rock tunnels can meet the grounding safety limits specified in GB 50065-2011. No independent grounding device is required for electric power such facilities as tunnel chamber box-type transformer of high-speed railway tunnel, which can be directly connected to the tunnel integrated grounding system. The research results have been applied in Jin-Wen high speed railway expansion and reformation project and good effect achieved.
引文
[1]国家铁路局.TB10621—2014高速铁路设计规范[S].北京:中国铁道出版社,2015.
[2]陈亮,林圣,何正友.基于有限元方法的高速铁路隧道综合接地系统电磁特性分析[J].中国电机工程学报,2016,36(S1):222-232.
[3]干喆渊,丁中民,万保权,等.某大型海底隧道接地网特性计算[J].高电压技术,2008,34(10):2185-2189.
[4] Zhang Yi,Wang Jianguo,Qi Guangfeng,et al. rounding impedance measurement method of integrated grounding system in high-speed railway roadbed section[J]. IET Electrical Systems in Transportation let,2015,5(2):88-93.
[5] Wu G,Gao G,Zhou L,et al. Study on the performance of integrated grounding line in high-speed railway[J]. IEEE Transactions on Power Delivery,2011,26(3):1803-1810.
[6]宋利.山区电气化铁路贯通地线接地系统研究[J].铁道标准设计,2015,59(12):120-124.
[7]陈屹,邓云川.遂渝线无砟轨道综合接地系统钢轨电位及电流分布的分析[J].铁道工程学报,2007(S1):426-429.
[8]罗勋,黄渤,张先怡,等.高速铁路路基段弱电设备单独接地的可行性研究[J].铁道科学与工程学报,2014,11(6):62-67.
[9]刘立峰,周南骏.武广铁路客运专线综合接地标准化设计[J].铁道标准设计,2010(1):169-172.
[10]国家铁路局.TB10008—2015铁路电力设计规范[S].北京:中国铁道出版社,2016.
[11]国家铁路局.TB10180—2016铁路防雷及接地工程技术规范[S].北京:中国铁道出版社,2016.
[12]魏晓斌,高国强,陈盼,等.保护接地对高速动车组接地回流的影响[J].铁道学报,2017,39(8):39-44.
[13]孙峥,陈维江,詹花茂,等.高速铁路综合信号楼与邻近通信塔接地装置雷电暂态分析[C]∥中国电机工程学会高电压专业委员会2015年学术年会论文集,2015.
[14]傅志跃.单个接地装置的接地电阻对综合接地系统接地电阻的影响计算[J].铁道勘察,2015,41(4):105-107.
[15]中华人民共和国住房和城乡建设部.GB/T 50065—2011交流电气装置的接地设计规范[S].北京:中国计划出版社,2011.
[16]王建国,樊亚东,张义,等.高速铁路综合接地系统的接地阻抗与散流特性[J].高电压技术,2015,41(11):3576-3582.
[17]吴广宁,黄渤,曹晓斌,等.高速铁路路基段综合接地系统雷电冲击特性[J].高电压技术,2014,40(3):669-675.
[18]高波.高速铁路隧道设计[M].北京:中国铁道出版社,2010:119-120.
[19]孟宪军.高速铁路综合接地施工与检验(路基、桥梁、隧道部分)[M].北京:中国铁道出版社,2011:167-170.
[2]陈亮,林圣,何正友.基于有限元方法的高速铁路隧道综合接地系统电磁特性分析[J].中国电机工程学报,2016,36(S1):222-232.
[3]干喆渊,丁中民,万保权,等.某大型海底隧道接地网特性计算[J].高电压技术,2008,34(10):2185-2189.
[4] Zhang Yi,Wang Jianguo,Qi Guangfeng,et al. rounding impedance measurement method of integrated grounding system in high-speed railway roadbed section[J]. IET Electrical Systems in Transportation let,2015,5(2):88-93.
[5] Wu G,Gao G,Zhou L,et al. Study on the performance of integrated grounding line in high-speed railway[J]. IEEE Transactions on Power Delivery,2011,26(3):1803-1810.
[6]宋利.山区电气化铁路贯通地线接地系统研究[J].铁道标准设计,2015,59(12):120-124.
[7]陈屹,邓云川.遂渝线无砟轨道综合接地系统钢轨电位及电流分布的分析[J].铁道工程学报,2007(S1):426-429.
[8]罗勋,黄渤,张先怡,等.高速铁路路基段弱电设备单独接地的可行性研究[J].铁道科学与工程学报,2014,11(6):62-67.
[9]刘立峰,周南骏.武广铁路客运专线综合接地标准化设计[J].铁道标准设计,2010(1):169-172.
[10]国家铁路局.TB10008—2015铁路电力设计规范[S].北京:中国铁道出版社,2016.
[11]国家铁路局.TB10180—2016铁路防雷及接地工程技术规范[S].北京:中国铁道出版社,2016.
[12]魏晓斌,高国强,陈盼,等.保护接地对高速动车组接地回流的影响[J].铁道学报,2017,39(8):39-44.
[13]孙峥,陈维江,詹花茂,等.高速铁路综合信号楼与邻近通信塔接地装置雷电暂态分析[C]∥中国电机工程学会高电压专业委员会2015年学术年会论文集,2015.
[14]傅志跃.单个接地装置的接地电阻对综合接地系统接地电阻的影响计算[J].铁道勘察,2015,41(4):105-107.
[15]中华人民共和国住房和城乡建设部.GB/T 50065—2011交流电气装置的接地设计规范[S].北京:中国计划出版社,2011.
[16]王建国,樊亚东,张义,等.高速铁路综合接地系统的接地阻抗与散流特性[J].高电压技术,2015,41(11):3576-3582.
[17]吴广宁,黄渤,曹晓斌,等.高速铁路路基段综合接地系统雷电冲击特性[J].高电压技术,2014,40(3):669-675.
[18]高波.高速铁路隧道设计[M].北京:中国铁道出版社,2010:119-120.
[19]孟宪军.高速铁路综合接地施工与检验(路基、桥梁、隧道部分)[M].北京:中国铁道出版社,2011:167-170.