Title :
Study for theory and method of on-line detection of power system transient harmonic
Author :
Liao, Ruijin ; Sun, Caixin ; Li, Jian ; Song, Yang ; Ge, Yi
Author_Institution :
Key Lab. of High Voltage Eng. & Electr. New Technol., Chongqing Univ., China
Abstract :
This paper describes the theory of on-line detection of power system transient harmonic. A new on-line detection method using RMS (root-mean-square) of harmonics amount as trigger is presented for the first time. The passive sensor applying electric-magnetic isolated method and the synchronous sampling circuits used for tracking the changes of power system frequency are studied and designed. The contrasting analysis of the input wave with the reverse synthetic input wave by detecting results in a laboratory verifies the correctness of this method. Finally, the results of transient harmonic detected in the substation are given
Keywords :
power system harmonics; power system transients; substations; RMS; electric-magnetic isolated method; input wave; passive sensor; power system frequency; power system transient harmonic detection; reverse synthetic input wave; substation; synchronous sampling circuits; Circuits; Frequency; Laboratories; Power system analysis computing; Power system harmonics; Power system transients; Power systems; Sampling methods; Sensor systems; Substations;
Conference_Titel :
Electrical Insulating Materials, 2001. (ISEIM 2001). Proceedings of 2001 International Symposium on
Conference_Location :
Himeji
Print_ISBN :
4-88686-053-2
DOI :
10.1109/ISEIM.2001.973794
