Study on the Distribution Line Condition Monitoring Method Based on Real-Time Measurement Data

To develop an economic and effective online monitoring method is necessary as the normal running of distribution line is critical to ensure the reliability of power system. And the distribution line state monitoring technology improved steadily nowadays, the monitoring of operating status can be achieved by using online monitoring devices. However, its installation and maintenance cost a lot, it is poor in economy. A new method, in which line resistance was selected as a reference quantity, was proposed in this article. The monitoring of distribution line running status can be realized by analyzing the line resistance value that calculated by real-time measurement data. The method improves the utilization of information system and requires no additional investment costs. And the example verified the validity of the method; it is possible to learn about the operational status timely through analyzing the changes in line resistance value.