Lacking effective means of management

the current operation and maintenance of the power monitoring system faced with definite security risks is unable to perform effective management of the large amount of link information generated in the process of operation and maintenance and correlation analysis. A link information management system based on the tree model is proposed

which is composed of three levels: source data collection

link information modeling and real-time analysis. By using this method

the auditor is able to effectively manage the link information of security operation and maintenance

the access route can be traced should a security incident occur

reducing the time locating the accident. An algorithm is proposed to build the link topology. With this method

an access information forest can be developed through the link access information collected. The experiment based on this algorithm shows that the proposed method is effective.