中国能源建设集团广东省电力设计研究院有限公司,广州 510663;中国电力科学研究院有限公司电网环境保护全国重点实验室,武汉 430074;国家电网有限公司重庆市电力公司市区供电分公司,重庆 400000;武汉大学电气与自动化学院,武汉 430072
针对高压电缆金属护层电压不平衡引起护层环流超限,影响城市电网安全稳定运行,导致电缆线路报警停运的问题,对220 kV城市长电缆线路交叉互联单元中不均匀分段、不同三相轴间距以及混合排列所导致的护层环流进行分析计算,引入不均匀分段系数评价不均匀分段程度对护层环流的影响,并进行工程实例验证。结果表明,仿真模型和计算结果准确性良好;单回路和双回路下,护层环流大小与不均匀分段系数成正比;均匀分段下,同一组交叉互联单元中采用不同轴间距或混合排列方式会导致护层环流增大。提出利用不同轴间距抑制不均匀分段下环流的方法,如通过较短段采用较大轴间距、较长段采用较小轴间距来减小护层环流。
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[2] 刘敏,孙廷玺,方义治,等.基于权重空间MCMC抽样的高压电缆状态评价方法[J].南方电网技术,2019,13(10):62-73. LIU Min, SUN Tingxi, FANG Yizhi, et al. A state evaluation method of high-voltage cable based on weight space[J]. Southern Power System Technology, 2019, 13(10): 62-73.
[3] 王炼兵.深圳高压电缆护套环流超标原因分析及解决措施研究[D].广州:华南理工大学,2016.
[4] 于平澜.电缆金属护套感应电压及保护接地的研究[D].哈尔滨:哈尔滨理工大学,2013.
[5] 陈科技,齐炜.混合排列方式对双回路XLPE电缆护层环流的影响[J].高电压技术,2018,44(11):3736-3742. CHEN Keji, QI Wei. Effect of mixed arrangement on current in sheaths of two-circuit arranged XLPE cables[J]. High Voltage Engineering, 2018, 44(11): 3736-3742.
[6] LI M Z, ZHOU W J, WANG C L, et al. A novel fault localization method based on monitoring of sheath current in a cross-bonded HV cable system[C]//2017 IEEE Electrical Insulation Conference (EIC). Baltimore: IEEE, 2017: 123-126.
[7] 李伯颐,崔厚坤,安增军,等.单段高压电缆最大允许敷设长度研究[J].电线电缆,2017(5):42-46. LI Boyi, CUI Houkun, AN Zengjun, et al. Research of the maximum allowable length of single cable section[J]. Electric Wire & Cabl, 2017(5): 42-46.
[8] 成志威.城市电缆线路绝缘故障诊断技术研究[D].长沙:长沙理工大学,2015.
[9] 姚舜禹.一类电缆交叉互联接地系统缺陷的环流特征研究[J].电线电缆,2023(2):48-53. YAO Shunyu. Study on Circulation Characteristics of a Kind of Defects in Cable Cross-Connected Grounding System[J]. Electric Wire & Cable, 2023(2): 48-53.
[10] 王永志,曹炜,梁海生,等.电缆护套环流估算公式的拟合及排列方式的优化[J].高压电器,2017,53(1):77-82. WANG Yongzhi, CAO Wei, LIANG Haisheng, et al. Fitting formula of sheath current and the arrangement optimization of cables[J]. High Voltage Apparatus, 2017, 53(1): 77-82.
[11] 梁海生,李帆,王永志,等.混合排列方式在交叉互联电缆中的应用[J].电线电缆,2015(6):41-44. LIANG Haisheng, LI Fan, WANG Yongzhi, et al. The application of mixed arrangement in sheath cross bonding system[J]. Electric Wire & Cable, 2015(6): 41-44.
[12] 杨超,李明德,黄海,等.基于向量运算法的交叉互联XLPE电缆在线监测系统设计[J].电力科学与技术学报,2016,31(3):88- 94. YANG Chao, LI Mingde, HUANG Hai, et al. Design of on-line monitoring system for crossing-linked XLPE cable based on vector calculation method[J]. Journal of Electric Power Science and Technology, 2016, 31(3): 88-94.
[13] Anders G J, Brakelmann H. Improvement in cable rating calculations by consideration of dependence of losses on temperature[J]. IEEE Transactions on Power Delivery, 2004, 19(3): 919-925.
[14] De Leon F, Marquez-Asensio M L, Alvarez-Cordero G, et al. Effects of conductor counter transposition on the positive-sequence impedance and losses of cross-bonded cables[J]. IEEE Transactions on Power Delivery, 2011, 26(3): 2060-2063.
[15] 徐绍军,黄鹤鸣,陈平.单芯高压电缆金属护套环流异常分析及对策[J].供用电,2007(5):50-51. XU Shaojun, HUANG Heming, CHEN Ping. Analysis and countermeasures of abnormal circulation current in metal sheath of single-core high-voltage cable[J]. Distribution & Utilization, 2007(5): 50-51.
[16] 欧阳力,李小春,谭君,等.交联聚乙烯电缆护层接地电流计算及监测[J].供用电,2012,29(2):71-74. OUYANG Li, LI Xiaochun, TAN Jun, et al. Calculation and Detection of Current in the Ground Wire of Crosslinked Polyethylene(XLPE) Cables[J]. Distribution & Utilization, 2012, 29(2): 71-74.
[17] 刘楚加.高压单芯电缆减小金属护套环流的途径[J].自动化应用,2013(7):87-89. LIU Chujia. Methods of decreasing metal sheath circulation of high voltage single-core cable[J]. Automation Application, 2013(7): 87-89.
[18] 杜伯学,李忠磊,张锴,等.220 kV交联聚乙烯电力电缆接地电流的计算与应用[J].高电压技术,2013,39(5):1034-1039. DU Boxue, LI Zhonglei, ZHANG Kai, et al. Calculation and application of 220 kV polyethylene power cable grounding current[J]. High Voltage Engineering, 2013, 39(5): 1034-1039.
[19] 郭少锋.隧道敷设多回高压电缆多物理场结合电路仿真及其布置优化的研究[D].广州:华南理工大学,2019.
[20] 涂静芸.基于护层环流法的高压电缆故障诊断与定位技术研究[D].武汉:华中科技大学,2019.
[21] 谭笑,陈杰,李陈莹,等.高压电力电缆增加段长关键技术研究展望及应用[J].电力工程技术,2018,37(3):91-96. TAN Xiao, CHEN Jie, LI Chenying, et al. Research Prospect and Application of Technology to Increase the Length of High Voltage Power Line[J]. Electric Power Engineering Technology, 2018, 37(3): 91-96.
基本信息:
DOI:10.19929/j.cnki.nmgdljs.2024.0081
中图分类号:
引用信息:
[1]李炬添1,李志宇2,林睿1等.220 kV城市长电缆线路护层环流及抑制措施研究[J],2024,42(06):64-71.DOI:10.19929/j.cnki.nmgdljs.2024.0081.
基金信息:
中国能源建设集团广东省电力设计研究院有限公司科技标准化项目“近海深水区海上风电电气关键技术研究”(EV05011W)