EHV series capacitor banks: a new approach to platform to grounds signalling, relay protection and supervision

Author

Adolfsson, M. ; Einvall, C-H. ; Lindberg, P. ; Samuelsson, J. ; Ahlgren, L. ; Edlund, H.

Author_Institution

ABB HV Switchgear, Ludvika, Sweden

Volume

4

Issue

2

fYear

1989

fDate

4/1/1989 12:00:00 AM

Firstpage

1369

Lastpage

1378

Abstract

A method for platform-to-ground signaling, relay protection, and supervision of EHV (extremely high voltage) series capacitor banks is presented. The system comprises optical current transducers, optical fiber system, interface unit, and microprocessor-based protection supervision and control equipment located in the control room. The optical current transducer, located at high potential, does not need its own power supply, since it is powered with light from ground level via the optical fiber system. The microprocessor-based protection and supervision system comprises all the protection functions required for the series capacitor bank. In addition, it includes a number of supervision and logging functions. Typical applications of the new system, besides EHV series capacitor banks, are for current measurements in substations and other EHV installations. Operating experience from an unattended 400 kV pilot installation was excellent

Keywords

capacitor storage; optical fibres; relay protection; 400 kV; EHV series capacitor banks; grounds signalling; microprocessor-based protection supervision; optical current transducers; optical fiber system; relay protection; Capacitors; Control equipment; Optical control; Optical fibers; Power system protection; Protective relaying; Substation protection; Transducers; Ultraviolet sources; Voltage;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/61.25624

Filename

25624