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

fYear

2010

fDate

28-31 March 2010

Firstpage

1

Lastpage

4

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/APPEEC.2010.5449265

Filename

5449265