复杂工况下高压电缆敷设简化模型研究及工程验证
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摘要
针对几字型、高落差电缆模型的特点,发现拉管段、带中间限位的弧形垂直沉井段牵引力计算尚没有工程经验借鉴。根据实际敷设环境进行了敷设深度与弧形段高度差区段归类,分别建立了工程力学模型,采用理论计算和现场实测校核,确定工程计算公式,实现了复杂工况下高压电缆的安全、经济、高效敷设。最后以220kV牵引东站工程为例,根据文中研究成果进行优化选型并形成施工方案,高落差电缆按连续敷设工艺顺利完成了敷设和打弯工作,各项指标良好,符合技术规范要求。
In the light of the characteristics of the cable construction model under complicated working conditions,it is found that there is no engineering experience to calculate the traction force of the stay tube section and the archigh drop section. This paper establishes the corresponding engineering mechanics models according to the construc-tion site environment,which determines the engineering calculation formulas by theoretical deduction and the on-site industrial test verification,thus realizing the safe,economical and efficient laying of high-voltage cables undercomplex working conditions. Finally,the 220kV East Traction Station project is taken as an example to verify theproposed construction scheme. The results show that the laying and bending tasks can be successfully completed and all the indicators are in perfect conformity with the technical specifications.
In the light of the characteristics of the cable construction model under complicated working conditions,it is found that there is no engineering experience to calculate the traction force of the stay tube section and the archigh drop section. This paper establishes the corresponding engineering mechanics models according to the construc-tion site environment,which determines the engineering calculation formulas by theoretical deduction and the on-site industrial test verification,thus realizing the safe,economical and efficient laying of high-voltage cables undercomplex working conditions. Finally,the 220kV East Traction Station project is taken as an example to verify theproposed construction scheme. The results show that the laying and bending tasks can be successfully completed and all the indicators are in perfect conformity with the technical specifications.
引文
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[16] TOMITA M,AKASAKA T,FUKUMOTO Y,et al. Layingmethod for superconducting feeder cable along railwayline[J]. Cryogenics,2018(89):125-130.
[17] WU Chuan,GUO Jun,WU Xiaoming. Calculation methodof the pull-back force for cable laying of the trench lesscompleted power pipe-line[J]. Journal of Coastal Research,2015,41(4):681-686.
[18]郑雁翎.电缆线路的电缆群载流量优化数值计算模型研究[J].高电压技术,2015,41(11):3760-3765.ZHENG Yanling. Research on numerical calculation mod-el of cable group carrying capacity optimization for cableline[J]. High Voltage Engineering,2015,41(11):3760-3765.
[19] CHOI Y. ROV-based automated cable-laying system:Appli-cation to DONET2 installation[J]. IEEE Journal of OceanicEngineering,2018,43(3):665-676.
[20]曹晓斌,易志兴,陈奎,等.高速铁路单芯馈线电缆的敷设方式和敷设间距[J].中国铁道科学,2015,36(6):85-90.CAO Xiaobin,YI Zhixing,CHEN Kui,et al. Laying modeand laying spacing for single-core feeder cable of high speedrailway[J]. China Railway Science,2015,36(6):85-90.
[2]严有祥,方晓临,张伟刚,等.厦门±320 kV柔性直流电缆输电工程电缆选型和敷设[J].高电压技术,2015,41(4):1147-1153.YAN Youxiang,FANG Xiaolin,ZHANG Weigang,et al.Cable section and laying of Xiamen±320 kV flexible DCcable transmission project[J]. High Voltage Engineering,2015,41(4):1147-1153.
[3]王春江.电力电缆手册第三册[M].北京:机械工业出版社,2004:202-210.WANG Chunjiang. The third volume of power cable manu-al[M]. Beijing:China Machine Press,2004:202-210.
[4]周韫捷,姜芸,蒋晓娟.远距离跨海大桥高压电缆敷设工程[J].电网技术,2006,30(22):87-90.ZHOU Yunjie,JIANG Yun,JIANG Xiaojuan. Cable layingproject of long distance bridge cutting across sea[J]. PowerSystem Technology,2006,30(22):87-90.
[5]曹克鹏.电缆输送机敷设大截面电缆的施工[J].油气田地面工程,2014,33(7):90.CAO Kepeng. Construction of large section cable laying forcable conveyor[J]. Oil-Gas Field Surface Engineering,2014,33(7):90.
[6]陈庆国,秦艳军,尚南强,等.温度对高压直流电缆中间接头内电场分布的影响分析[J].高电压技术,2014,40(9):2619-2626.CHEN Qingguo,QIN Yanjun,SHANG Nanqiang,et al. In-fluence analysis of temperature on electric-field distribu-tion in HVDC cable joint[J]. High Voltage Engineering,2014,40(9):2619-2626.
[7]高云鹏,谭甜源,刘开培,等.电缆接头温度反演及故障诊断研究[J].高电压技术,2016,42(2):535-542.GAO Yunpeng,TAN Tianyuan,LIU Kaipei,et al. Researchon temperature retrieval and fault diagnosis of cable joint[J].High Voltage Engineering,2016,42(2):535-542.
[8]陈铮铮,赵健康,张丽,等.直流电缆上交流分量的计算及其屏蔽[J].中国电力,2012,45(7):4-8.CHEN Zhengzheng,ZHAO Jiankang,ZHANG Li,et al. Cal-culation and shielding of AC component on DC cables[J].Electric Power,2012,45(7):4-8.
[9] UCHIDA K,KOBAYSHI S. New after-laying test methodsfor XLPE cable lines[J]. Electrical Engineering in Japan,1996,117(6):818-825.
[10] GARRIDO C,OTERO A F. Theoretical model to calculatesteady-state and transient ampacity and temperature in bur-ied cables[J]. IEEE Transactions on Power Delivery,2003,18(3):667-678.
[11]张东斐,唐庆华,朱利军. 110 kV国桥线电缆接头故障分析及处理[J].天津电力技术,2007,33(4):34-38.ZHANG Dongfei,TANG Qinghua,ZHU Lijun. Analysisand treatment of 110 kV national bridge cable joint fault[J].High Voltage Engineering,2007,33(4):34-38.
[12]丁辉,韩民晓,肖湘宁,等. VSC-HVDC与平行架设交流线路基频电磁感应边界条件[J].电工技术学报,2010,25(5):183-189.DING Hui,HAN Minxiao,XIAO Xiangning,et al. Funda-mental frequency electromagnetic induction boundary con-dition analysis of VSC-HVDC system with paralleled ACtransmission lines[J]. Transactions of China Electrotechni-cal Society,2010,25(5):183-189.
[13]周远翔,刘睿,张云霄,等.高压/超高压电力电缆关键技术分析及展望[J].电工文摘,2014,40(6):1-14.ZHOU Yuanxiang,LIU Rui,ZHANG Yunxiao,et al. Keytechnical analysis and prospect of high voltage and extra-high voltage power cable[J]. Electrician Abstracts,2014,40(6):1-14.
[14] MARUYAMA S,ISHII N,SHIMADA M,et al. Develop-ment of a 500 kV DC XLPE cable system[J]. Furukawa Re-view,2003(25):47-52.
[15]刘渝根,尚龙龙,田金虎,等. 220 kV四回高压电缆同相2根并联敷设方式优化研究[J].高压电器,2015,51(12):25-32.LIU Yugen,SHANG Longlong,TIAN Jinhu,et al. Optimallayout of the 220 k V quadri-circuit cables with double-splitconductors in each phase[J]. High Voltage Apparatus,2015,51(12):25-32.
[16] TOMITA M,AKASAKA T,FUKUMOTO Y,et al. Layingmethod for superconducting feeder cable along railwayline[J]. Cryogenics,2018(89):125-130.
[17] WU Chuan,GUO Jun,WU Xiaoming. Calculation methodof the pull-back force for cable laying of the trench lesscompleted power pipe-line[J]. Journal of Coastal Research,2015,41(4):681-686.
[18]郑雁翎.电缆线路的电缆群载流量优化数值计算模型研究[J].高电压技术,2015,41(11):3760-3765.ZHENG Yanling. Research on numerical calculation mod-el of cable group carrying capacity optimization for cableline[J]. High Voltage Engineering,2015,41(11):3760-3765.
[19] CHOI Y. ROV-based automated cable-laying system:Appli-cation to DONET2 installation[J]. IEEE Journal of OceanicEngineering,2018,43(3):665-676.
[20]曹晓斌,易志兴,陈奎,等.高速铁路单芯馈线电缆的敷设方式和敷设间距[J].中国铁道科学,2015,36(6):85-90.CAO Xiaobin,YI Zhixing,CHEN Kui,et al. Laying modeand laying spacing for single-core feeder cable of high speedrailway[J]. China Railway Science,2015,36(6):85-90.