电缆终端金属外护套接地装置防盗技术改造研究.doc
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电缆终端金属外护套接地装置防盗技术改造研究,摘 要：近年来，天津地区电缆终端金属外护套接地装置被盗严重，接地装置的被盗破坏了电缆系统的电气完整性。短路时，由于接地通道的不完整，金属外护套产生过高的感应电压将造成电缆外护套多点击穿，使金属外护套上形成环流，进而直接影响整个电缆系统的安全稳定运行。为解决此问题，通过对接地装置中利用铝芯接地线和镀锌圆钢代替铜芯接地线可...
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摘 要：近年来，天津地区电缆终端金属外护套接地装置被盗严重，接地装置的被盗破坏了电缆系统的电气完整性。短路时，由于接地通道的不完整，金属外护套产生过高的感应电压将造成电缆外护套多点击穿，使金属外护套上形成环流，进而直接影响整个电缆系统的安全稳定运行。为解决此问题，通过对接地装置中利用铝芯接地线和镀锌圆钢代替铜芯接地线可行性的理论计算分析，推导出了短路情况下铝芯接地线和镀锌圆钢所需的最小截面，从而大大降低了接地装置的被盗可能性。
关键词：接地装置；防盗；TJ-240铜芯电缆；铝芯电缆；镀锌圆钢
Outside cable termination metal protective covering grounding security technological transformations research
Liu Yuan Kang
(TIANJIN TEDA ENGINEERING & DESIGNING CO.LTD ,528400,TianJing)
Abstract：In recent years, outside the Tianjing area cable termination metal the protective covering grounding is robbed seriously, the grounding is robbed destroyed the cable system electrical integrity.When short circuit, because the earth channel is incomplete, outside the metal the protective covering will produce the high induced tension to create outside the electric cable the protective covering multi-spot puncture, will cause outside the metal on the protective covering to form the circulation, then direct influence entire cable system security stable movement.In order to solve this problem, meets the grounding and the galvanization round steel through the docking installment in using the aluminum core replaces the copper core to meet the grounding feasible the oretical calculation analysis, inferred in the short circuit situation the aluminum core to meet the smallest section which the grounding and the galvanization round steel needed, thus reduced the grounding to rob greatly the possibility.
Key words：Grounding; Security; TJ-240 copper core electric cable; Aluminum core electric cable; Galvanization round steel
关键词：接地装置；防盗；TJ-240铜芯电缆；铝芯电缆；镀锌圆钢
Outside cable termination metal protective covering grounding security technological transformations research
Liu Yuan Kang
(TIANJIN TEDA ENGINEERING & DESIGNING CO.LTD ,528400,TianJing)
Abstract：In recent years, outside the Tianjing area cable termination metal the protective covering grounding is robbed seriously, the grounding is robbed destroyed the cable system electrical integrity.When short circuit, because the earth channel is incomplete, outside the metal the protective covering will produce the high induced tension to create outside the electric cable the protective covering multi-spot puncture, will cause outside the metal on the protective covering to form the circulation, then direct influence entire cable system security stable movement.In order to solve this problem, meets the grounding and the galvanization round steel through the docking installment in using the aluminum core replaces the copper core to meet the grounding feasible the oretical calculation analysis, inferred in the short circuit situation the aluminum core to meet the smallest section which the grounding and the galvanization round steel needed, thus reduced the grounding to rob greatly the possibility.
Key words：Grounding; Security; TJ-240 copper core electric cable; Aluminum core electric cable; Galvanization round steel
