Title :
Research of monitoring power quality applying CVT in the high-voltage power network
Author_Institution :
China Electr. Power Res. Inst., Meas. Res. Inst., Beijing, China
Abstract :
Simulation of the CVT´s harmonic measurement distortion, and the transformation ratio characteristics have been simulated by using the high-frequency equivalent circuit.The relationgship between the main stray capacitance´s change and the change of CVT´s pass band have been analyzed. At the same time, combining the engineering application, we propose to make use of the combination of experimental data with artificial neural network to correct the CVT´s transformation ratio. This method can be used to monitor harmonic chronically through the CVT. Testified by emulators, this method is feasible.
Keywords :
equivalent circuits; neural nets; potential transformers; power engineering computing; power supply quality; CVT harmonic measurement distortion; CVT pass band change; CVT transformation ratio characteristic; artificial neural network; capacitor voltage transformer; harmonic monitoring; high-frequency equivalent circuit; high-voltage power network; power quality monitoring; stray capacitance change; Capacitors; Distortion measurement; Harmonic analysis; Harmonic distortion; Power system harmonics; Training; Voltage measurement; CVT; Power quality monitoring; artificial neural network; capacitor voltage transformer; distortion correction;
Conference_Titel :
Power Engineering and Automation Conference (PEAM), 2011 IEEE
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-9691-4
DOI :
10.1109/PEAM.2011.6134888
