| 引用本文: | 庄小亮,余兆荣,牛海清,孙广慧,游 勇.日负载系数与10 kV XLPE电缆周期负荷载流量关系的试验研究[J].电力自动化设备,2014,34(4): |
| ZHUANG Xiaoliang,YU Zhaorong,NIU Haiqing,SUN Guanghui,YOU Yong.Experimental research of relationship between daily load factor and cyclic ampacity of 10 kV XLPE cable[J].Electric Power Automation Equipment,2014,34(4): |
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| 摘要: |
| 为计算10 kV交联聚乙烯（XLPE）电缆周期负荷载流量，开发了三芯电缆周期负荷载流量计算软件，开展了直埋敷设不同日负载系数的三芯电缆周期负荷载流量试验。将试验所得的周期负荷载流量与软件计算结果进行对比，验证了软件计算的正确性。利用软件计算结合载流量试验，对日负载系数与周期负荷载流量的关系进行理论研究，结果表明日负载系数越小，周期负荷载流量越大。针对佛山地区典型负荷的10 kV电缆线路，计算其12个月的周期负荷载流量系数。建议按周期负荷载流量控制电缆负荷电流的最大值，可在保证电缆寿命的前提下，提高电缆线路的输电能力。 |
| 关键词: 电力电缆 日负载系数 周期负荷载流量 周期负荷载流量系数 |
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| Experimental research of relationship between daily load factor and cyclic ampacity of 10 kV XLPE cable |
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ZHUANG Xiaoliang1, YU Zhaorong2, NIU Haiqing1, SUN Guanghui3, YOU Yong1
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1.School of Electric Power，South China University of Technology，Guangzhou 510640，China;2.Department of Production Technology，Guangdong Power Grid Corporation，Guangzhou 510600，China;3.Foshan Power Bureau of Guangdong Power Grid Corporation，Foshan 528000，China
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| Abstract: |
| A software package for calculating the cyclic ampacity of 10 kV XLPE three-core cable is developed and the cyclic ampacity experiments of directly buried three-core cable are carried out for different load factors. The comparison of cyclic ampacity between experimental and calculated results verifies the validity of the developed software. The relationship between daily load factor and cyclic ampacity is theoretically researched and results show that，the smaller the daily load factor is，the bigger the cyclic ampacity will be. The cyclic load coefficients of 10 kV cable lines in Foshan with typical load are calculated for 12 months. It is suggested that，the cable load should be controlled by the cyclic ampacity to enhance its transmission capacity while its lifetime is guaranteed. |
| Key words: electric cables daily load factor cyclic ampacity cyclic load coefficient |
