电力电缆护层环流在线监测系统的研究

摘要

为了有效地监测电缆的绝缘状况,针对电力电缆金属护层环流在线监测系统进行了研究.首先,介绍电力电缆护层环流在线监测原理;其次,对本系统的各模块的功能实现进行详细的阐述;最后,以短线路监测到的护层环流理论值与实际值作为比较来验证其准确性,以长线路监测到的多组护层环流值来验证其稳定性.系统性能测试表明,所设计的监测系统对在线监测电缆的绝缘状况具有可行性.%In order to monitor the insulation condition of power cable effectively, this paper studied the online monitoring system of metal protecting layer circulation of power cable.Firstly, it introduced the principle of the online monitoring of protecting layer circulation of power cable.Secondly, the function of each module of the system was described in detail.Finally, the support layer circulation theory value and the practical value in monitoring the short line were compared to verify the accuracy, the multi group protecting layer circulation value in monitoring the long line to verify the stability.The test result shows that the design of the monitoring system is feasible for the insulation condition of power cable.