Insulator contamination on-line monitoring system

The invention provides an insulator contamination on-line monitoring system, which comprises a monitoring terminal and a remote monitoring terminal, wherein the monitoring terminal records transmission line information; after meteorological information and insulator leakage current are collected and self-adaption amplification is carried out on the leakage current, the pulse frequency of the leakage current is obtained, the leakage current, the pulse frequency of the leakage current and the meteorological information are stored, and the information is submitted in a short message mode or according to an submitted instruction; when the value of the leakage current is greater than a preset alarm value of the leakage current, alarm information is sent; and system parameters of the monitoring terminal and the preset alarm value of the leakage current are modified according to an modification instruction. The remote monitoring terminal stores and displays the transmission line information, the leakage current, the pulse frequency of the leakage current and the meteorological information and carries out fusion processing on fundamental wave of the leakage current, the pulse frequency of the leakage current and the meteorological information, and the contamination degree on the surface of the insulator is obtained and displayed. The insulator contamination on-line monitoring system has the characteristics of high accuracy, strong real-time performance, fast response and the like and is widely applicable to a power system.