SUPERVISORY CONTROL AND DATA ACQUISITION SYSTEM AND SECURITY MANAGEMENT METHOD THEREOF

摘要

PURPOSE: An SCADA(Supervisory Control and Data Acquisition) system and security management method thereof are provided to monitor the invasion of a network by accurately verifying data received from each RTU(Reinforcement Training Unit). CONSTITUTION: A data state estimation module(230) determines measurement errors on power state data values received from each RTU. A security state determination module(220) senses the invasion of a network included in a management server. In case the measurement error is existed, the security state determination module determines security states by confirming the invasion of the network. A security control module(210) creates repairing or recovering command according to determination results.