• Journal of Electrical Engineering and Technology
• /
• v.6 no.3
• /
• pp.328-333
• /
• 2011

A Distribution Automation System (DAS) is operated by monitoring and control of the field statesusing Feeder Remote Terminal Units (FRTUs) installed together withautomatic switches.An optimal placement of automatic switchescan enhanceefficiencyof the operation and restoration, and improve the power supply reliability ofa DAS.This paper proposes an algorithm to decide the optimal placement of automatic switches ina DAS.The proposed algorithm was developed ona DAS witha six sections and three links configuration. The proposed algorithm was provided inaneight-feeder power distribution system.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
• /
• 2001.07a
• /
• pp.7-10
• /
• 2001

Distribution Automation System (DAS) has been designed and implemented for feeder automation using the Paircable, Optical-Fiber, Wireless, TRS as a communication media. KEPCO has been constructed DAS since 1984. We have two types of DAS. one is large-scale DAS for major city in korea, the other is small-scale DAS (or the rest of major city. we are plan to finish small-scale DAS by end of 2001.

• 제어로봇시스템학회:학술대회논문집
• /
• 1989.10a
• /
• pp.296-301
• /
• 1989

As a cornerstone of assembly automation, the automatic part feeders are used to feed the various kind of the parts to the assembly workstation in the desired order and fashion. In this paper, EXPERT SYSTEM consisting of the data base for the feeding functions and part properties plus the rule base for the selection of feeder types is developed. The symbolic data of the part properties are used as basic factors in the selection rule of the suitable feeder types.

• Proceedings of the KIEE Conference
• /
• 1996.07b
• /
• pp.899-901
• /
• 1996

KODAS is made up of the Central Control System(CCS) as four Vax workstations linked up with LAN networks, six Substation Communication Control Units(SCCU) installed in substation to transfer data, 125 Feeder Remote Units(FRU) located at the lower position of automated switch to provide the information of Fault Indicator(FI) and three kinds of automated switches to have remote control functions such as SF6 gas feeder automation switch, recloser and gas insulated pad mountes switchgear for under ground line. This paper explains the functions and characteristics in detail about each devices mentioned above.

• Proceedings of the KIEE Conference
• /
• 1993.07b
• /
• pp.902-904
• /
• 1993

This paper contains the terminal developement for the feeder remote unit in Korea Distribution Automation System. This terminal unit has serval functions in order to do feeder auotmation as following, the open/close controls and gathering status informations of switchgears, getting line currents and voltages, distribution fault. So FRU has four modules to do those functions-Logic Controller, Relay Controller, Data Acquisition, Display, Power Supply etc. The FRU should be on allays, so AC power is supplied before & behind the switchgear. Power Supply is made up with AC/DC, DC/DC, Battery and/or SOLAR CELLS & CONTROLLER. It is important for the supply to protect against some Surges, because surges are happened so many times. Surge test is fellowing the standard IEC 801-5 or IEEE 587.

• Proceedings of the KIEE Conference
• /
• 1993.07a
• /
• pp.424-426
• /
• 1993

Main function of distribution automation system can be summarized as feeder automation, telemetering, load control and facility information management. But in most cases, one or two of the above mentioned functions are developed in one distribution automation system. Which function to be developed in the automation system depends on the distribution system's characteristics. The title KODAS means $\underline{KO}$rea $\underline{D}$istribution $\underline{A}$utomation $\underline{S}$ystem. Management Korea for KODAS is central control station of distribution system, which is composed of several substations. This paper describes computer system, software tools, data base design data acqusition scheme and information flow.

• Proceedings of the KIEE Conference
• /
• 1999.11b
• /
• pp.303-305
• /
• 1999

This paper introduces the MMI software for Central Control System in the Distribution Automation System. It provides remote monitoring and real-time control of distribution through the use of remote terminal units(RTUs) graphically. Our MMI software for distribution automation displays a circuit operating map based on the distribution automation database, and overlays it with outage information from the feeder Automation software.

• Proceedings of the KIEE Conference
• /
• 1993.07a
• /
• pp.86-89
• /
• 1993

This paper contains the various effect of distribution feeder sectionalizing by distribution automation. The effect by automatic sectionalizing switch and the effect by manual switch are analyzed and shown according to the radial feeder and the loop feeder respectively. Based on the reliability analysis, the reference for the feeder division and sectionalization is recommended. Also, the necessary number of manual switch where the automatic switch is installed is recommended through the reliability analysis.

• Proceedings of the KIEE Conference
• /
• 1999.07c
• /
• pp.1079-1081
• /
• 1999

This paper presents the standard for dividing/tieing the distribution lines and installing optimally the automated distribution switch-gear in multi-line faults. Also this paper recommends the distribution system design in consideration of the live load transfer of the concentrated load in the last load-side. This recommendation will be useful for designing the distribution network, developing the feeder automation software and operating the distribution automation system.

• Proceedings of the KIEE Conference
• /
• 2001.07a
• /
• pp.446-448
• /
• 2001

We have developed the testing software for KEPCO operators to maintain the small-scale distribution automation system effectively. The testing software is used to monitor the present status, to measure the analog value(voltage, amperage) and to control the switch and FRTU(Feeder Remote Terminal Unit) in order to find out a disabled part of the system. And at the stage of inspection of the switch and FRTU, it can screen the inferior one.