Title :
Power system harmonic state estimation
Author :
MelioPoulos, A. P Sakis ; Zhang, Fan ; Zelingher, Shalom
Author_Institution :
Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA, USA
fDate :
7/1/1994 12:00:00 AM
Abstract :
A power system state estimation based on (a) multiphase model, (b) voltage and current waveform measurements, (c) synchronized measurements and (d) multifrequency model (i.e. the approach accounts for waveform distortion or harmonics) is formulated. The paper focuses on the following: (a) modeling, (b) implementation, (c) observability and (d) performance. Sensitivity analysis is used to show how transmission line modeling and measurement schemes affect the performance of harmonic state estimation. The overall performance of the system is described in terms of confidence level versus error. These concepts are illustrated with simple systems. The overall harmonic measurement system is scheduled for installation and field evaluation on the NYPA/New York Power Pool transmission system by the end of 1993
Keywords :
electric current measurement; phase measurement; power system harmonics; power system measurement; sensitivity analysis; state estimation; voltage measurement; NYPA/New York Power Pool transmission system; confidence level; current waveform measurement; multifrequency model; multiphase model; observability; performance; power system harmonic state estimation; sensitivity analysis; synchronized measurements; transmission line modeling; voltage waveform measurement; waveform distortion; Current measurement; Distortion measurement; Power measurement; Power system analysis computing; Power system harmonics; Power system measurements; Power system modeling; State estimation; Transmission line measurements; Voltage;
Journal_Title :
Power Delivery, IEEE Transactions on
