Research on Characteristics of Noncontact Capacitive Voltage Divider Monitoring System Under AC and Lightning Overvoltages

Author

Shaoqing Chen ; Hanyu Wang ; Lin Du ; Jianming Li

Author_Institution

Sichuan Electr. Power Res. Inst., Chengdu, China

Volume

24

Issue

5

fYear

2014

fDate

Oct. 2014

Firstpage

1

Lastpage

3

Abstract

Transient overvoltage due to lighting and changes of the power system is the main factor that may cause damage to the power system or equipments. Failing logging system and online monitoring system are not capable of well recording the transient overvoltage signal owing to shortcomings including limited sampling rate and electric structure. A new overvoltage transducer based on noncontact capacitor has been developed and it can be applied to overvoltage monitoring. The transmission characteristics when applied to power frequency voltage and lightning impulse voltage have been studied.

Keywords

HVDC power transmission; lightning protection; overvoltage protection; power capacitors; power system measurement; power transmission protection; transducers; voltage dividers; AC overvoltages; HVDC power transmission system; lightning impulse voltage; lightning overvoltages; limited electric structure; limited sampling rate; noncontact capacitive voltage divider monitoring system; overvoltage transducer; power equipments; power frequency voltage; power system; transient overvoltage signal; Lightning; Power systems; Sensors; Standards; Surges; Transducers; Voltage measurement; Capacitive divider; noncontact; transient overvoltage; transmission characteristics;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2014.2340451

Filename

6860236