1. Substation Data Integration & Information Exchange Advisor: Dr. Mladen Kezunovic Student: Sasa Jakovljevic Texas A&M University, Department of Electrical Engineering, College Station, Texas, USA Project objective: Utilize data obtained from Intelligent Electronic Devices (IEDs) to enhance Power System State Estimation

2. n Analyze digital relays and other Intelligent Electronic Devices installed in substations n Explore modern trends in substation communications (IEC 61850) n Collect data from various locations within substation and adjust the format n Provide redundancy of measurements n Write an application for data processing and consistency checking n Communicate output to the higher level Concentrate on the following issues: Research Approach

3. Substation Layout - One Line Representation Modeling Issues Power Apparatus: n Circuit Breakers n Disconnect Switches n Busbars n Load - Reactor Analog Measurements: n Currents [A] n Voltages [kV] n Power Flows [kW, kVAr] n Power Injections [same] Digital Measurements: n CB Statuses n DS Statuses n Ground Switches

4. Three-phase Substation Model in SIMULINK

5. Processing Algorithms in MATLAB Topology Checking Redundant Currents Kirchoff’s Current Law Branch Status

6. Output Tables Project Results - Future Work Communicated Data: n Three-phase or single-phase output n Possible errors filtered out n More reliable data Future Work: n Substation transition analysis n Switching sequences & interlocking n State tracking & predicting n Writing user friendly software Node Table Branch Table