Title :
A New Method for Over-voltage Online Monitoring Based on Chain Parameters
Author :
Zhang Zhongyuan ; Yue Peng ; Shi Wei
Author_Institution :
Dept. of Electr. Eng., North China Electr. Power Univ., Baoding, China
Abstract :
This paper presents a new method for over-voltage online monitoring based on chain parameters (ABCD parameters) of the equipments in the substation. The method models the potential transformer (PT), secondary cables and voltage divider as several two-port networks in cascade by means of their ABCD parameters. Adoption of this model can derive the over-voltage waveform of the high-voltage port of the PT from the voltage signal of the secondary device by means of time domain recursive convolution. The two-port ABCD parameters model of a lOkV PT is built by using this method. The comparison between the calculated results and measured data verify the feasibility of this method.
Keywords :
computerised monitoring; potential transformers; power engineering computing; substations; two-port networks; voltage dividers; chain parameters; over-voltage online monitoring; potential transformer; secondary cables; substation; two-port ABCD parameters model; voltage 10 kV; voltage divider; Cables; Computer industry; Computerized monitoring; Condition monitoring; Convolution; Low voltage; Power grids; Power system modeling; Substations; Voltage transformers;
Conference_Titel :
Power and Energy Engineering Conference (APPEEC), 2010 Asia-Pacific
Conference_Location :
Chengdu
Print_ISBN :
978-1-4244-4812-8
Electronic_ISBN :
978-1-4244-4813-5
DOI :
10.1109/APPEEC.2010.5449265
