Development of a high-speed switching system for distribution networks

Author

Genji, Takamu ; Shimamoto, Masao ; Kishida, Koichi

Author_Institution

Tech. Res. Center, Kansai Electr. Power Co. Inc., Amagasaki, Japan

Volume

13

Issue

1

fYear

1998

fDate

1/1/1998 12:00:00 AM

Firstpage

186

Lastpage

193

Abstract

This paper describes a high-speed switching system for distribution networks which has been developed with the aim of improving power supply reliability (reducing the number of supply interruptions) of distribution systems. When a fault occurs in conventional distribution systems, the fault section is isolated using a sequential time-out control scheme which requires the reclosing and re-reclosing of the entire system. A major drawback of such systems is that normal sections are also subjected to unnecessary power supply interruptions. In order to resolve this problem, the authors have developed a high-speed switching system which isolates only the fault section without interrupting the power supply to normal sections. This new system can fully restore power to the normal sections and completely isolate the fault section within 500 ms in the case of a ground fault

Keywords

distribution networks; earthing; electrical faults; power system protection; power system reliability; switching; 500 ms; development; distribution networks; fault section isolation; ground fault; high-speed switching system; power supply interruptions; power supply reliability; sequential time-out control scheme; supply interruptions; Automatic control; Circuit breakers; Circuit faults; Control systems; Electrical fault detection; Joining processes; Power supplies; Switches; Switching circuits; Switching systems;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/61.660877

Filename

660877