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电缆隧道内的电力电缆会对巡检机器人用漏泄通信电缆产生电磁影响,然而国内外关于该领域的研究尚属于空白。根据电缆隧道的实际情况研究巡检机器人通信线路在高压电缆隧道中的感性耦合影响。从电磁场基本理论出发,研究了单线电力电缆线路、三相电力电缆线路与通信线路间的感性耦合,并计算分析了单线电力电缆线路和典型布线方式下三相电力电缆线路对通信电缆线路的危险影响,最后以北京某地区一回二回地下电缆隧道为例,对通信线路感应纵电动势进行理论分析与现场测试,验证了该方法的正确性。结果表明:单线电力线路对通信线路的感性耦合影响较大,而三相电力线路对通信线路的感性耦合影响能够控制在国标规定的容许值范围内。通过分析两线路间的感性耦合,能够为电缆隧道通信线路的设计提供依据,对电缆隧道机器人巡检自动化的发展有着很重要的意义。
The power cables in the cable tunnel will have an electromagnetic influence on the leaky communication cables used by the inspection robots. However, the research in this area at home and abroad is still blank. According to the actual situation of the cable tunnel, the influence of the sensing robotic communication line on the inductive coupling in high voltage cable tunnel is studied. Based on the basic theory of electromagnetic field, the inductive coupling between single-phase power cables and three-phase power cables and communication lines is studied. The danger of three-phase power cables to communication cables under single-line power cables and typical cabling is calculated and analyzed Finally, taking the first and second underground cable tunnels in a certain area of Beijing as an example, the theoretical analysis and field test of the induced vertical electromotive force in the communication lines are carried out to verify the correctness of the method. The results show that the single line power line has a great influence on the inductive coupling of the communication lines, while the inductive coupling of the three phase power lines to the communication lines can be controlled within the allowable range stipulated by the national standard. By analyzing the inductive coupling between two lines, it can provide the basis for the design of cable tunnel communication lines and has very important significance for the development of cable tunnel robot inspection automation.