Enhanced Power System State Estimation With Overhead Line Sensors

This letter addresses the incorporation of transmission line sensor measurements into power system state estimation (SE). These measurements are obtained from various locations along a line and are different from conventional RTU measurements at line terminals (i.e., substations). We propose a measu...

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Bibliographic Details
Published in:IEEE transactions on power systems 2024-09, Vol.39 (5), p.6780-6783
Main Authors: Cheng, Gang, Lin, Yuzhang
Format: Article
Language:English
Subjects:
Current measurement
Data processing
line sensor
Power lines
Power measurement
Sensor systems
Sensors
State estimation
State vectors
Substations
Transmission line measurements
transmission line monitoring
Transmission lines
Vectors
Voltage measurement
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Summary:This letter addresses the incorporation of transmission line sensor measurements into power system state estimation (SE). These measurements are obtained from various locations along a line and are different from conventional RTU measurements at line terminals (i.e., substations). We propose a measurement function that can relate the current measurements at arbitrary positions along a line to the existing state variables at substation buses using line parameters and sensor locations. Hence, these measurements can be easily incorporated into SE without altering its state vector or system model. Simulation results on the IEEE 14-bus system and the NPCC 140-bus system demonstrate that the incorporation of line sensor measurements can significantly enhance SE's noise filtering and bad data processing performances.
ISSN:0885-8950
1558-0679
DOI:10.1109/TPWRS.2024.3405723