i. kepco introductions3.amazonaws.com/jujama.usercontent/23ddd075-a0b2... · kepco’s generation...

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I. KEPCO Introduction

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1898

The first electric power company (Hansung) was

established in Korea

1961

Three regional electric companies were merged

to establish a national electric power company (KECO)

1982

KECO was renamed KEPCO when it became a whollyGovernment-owned corporation

1989

2001

KEPCO’s generation unit was spun off to formsix 100%-owned subsidiaries (GENCOs)

2014 KEPCO’s headquarter was transferred to Naju-city

Listed its shares on KRX (Korea Stock Exchange) (21% by IPO)

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(Capacity : 72,105MW)

(Capacity : 21,110MW)

2001.4 : 5 Genco separated, 2002.2 : 1 Nuclear company separated

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Present

EVs

Smart Home

DistributedEnergy

Resources

Smart Building

Smart ApplianceIn-home Display

Storage Devices

SmartHeating & Cooling

Future

Effective in CO2 Reduction to Prevent Global Warming

• One way flow of Electric Power and Information Real time Two-way flow

Peak Shaving from Technologies

• Supplier-oriented network Operation Customer participation

• Centralized Generation (Massive use of fossil fuel) Distributed Generation (Renewable)

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Loss Rate

29.3%

3.69%

‘61 ‘80

5.0%(‘11)8.6%(‘11)

7.3%(‘11) 6.2%(‘11)

‘00 ‘14

6.7%4.7%

Power Outage time Sales per Employee

2,047

24,338

‘80 ‘08

11,131(‘09)5,982(‘09)

7,282(‘09) 13,071(‘09)

‘10 ‘14

18,358 21,938

[MWh]

Power IT Installation

170,000 Customers (2012)

11%, 2.5mil household

190 systems (2014)

DIS, Design, WFM (2014)

53%, 94,500

AMI for MV

AMI for LV

SCADA/DMS

NDIS

DAS*

Completion‘20

19.7

10.9

‘03 ‘05

10(‘08)68(‘11)

73(‘11) 120(‘09)

‘07 ‘14

18.617.2

[Minute/household]

*Distribution Automation System

II. Utilizing of TETRA

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□ Built up Analog TRS* (EDACS) based on 800Mhz frequency for power

facility maintenance with Voice communication (1994)

*Trunked Radio System

□ Used Analog TRS power line switch control and monitor with data

communication (1998)

□ Government allowed KEPCO to use 380Mhz frequency for Digital TRS

migration project (2005)

□ Installed Digital TRS demo system with TETRA, tested Data application

solutions such as controlling and monitoring, etc. (2007~)

□ Implemented nationwide TETRA installation project (2009~ )

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TETRA G/W

AMI Server

DAS Server

DistributionRepairing Server

TETRA NMS

AMI Units

Distribution AutomationSystem Units

DistributionRepairing Vehicles

Base Station

Weather ObservationServer

Weather ObservationUnits

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□ Automation system : Control and real time monitor of power switches in the field

□ Power facility maintenance : Car navigation and transferring repair information

□ Gathering weather information on the route of Typhoons

□ Collecting Meter data at power poles and transferring to tariff Server

Nationwide Radio Coverage

: 70%

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□ European Telecommunication Standard Institute (ETSI)

□ KEPCO has developed application using both of Control and Traffic

Channel [Control CH used Power Automation thanks to fast comm. Speed]

III. Test Overview

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□ Improvement of throughput and success rate using SCCH

□ Comparison the performance of 1 Ch(MCCH) VS. 4 Ch(1 MCCH+3 SCCH)

- Check Power Phase Current Measurement Time and Success Rate

- Check Total Info. Measurement Time and Success Rate

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Breaker Breaker4Breaker3Breaker2Breaker1

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IV. Test Results

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1924 23

0

10

20

30

MCCH SCCH(1) SCCH(2) SCCH(3)

17 19 19 19

0

10

20

30

MCCH SCCH(1) SCCH(2) SCCH(3)

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V. Summary

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Before Solution

Phase current

- Over than 99% success rate at 0.5 Sec schedule- Down success rate when reduce schedule

Total Information

- Insufficient success rate (97%) at 5sec schedule

- Down success rate when reduce schedule

After Solution

Phase current

- Very stable success rate when reduce schedule

- Down success rate when reduce schedule

Total Information

- 98% success rate at 3~4sec schedule

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Without Further additional hardware Channel card in Base station(TB3), Only with SCCH software upgrade

process, Power facilities automation project can be realized.

BTS are able to contain 4 time numbers of power switch terminal modem by simply adding SCCH software

Even though Shortening periodic schedule from 30sec to 0.3sec, Communication success rate can rise from

94~96% to 99~100%

Gathering and Response time of all modem(224pcs) can be shortened from 5.5~3.5sec to 2.6~2.4sec

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Communication success rate rise from 86~96% to 97~98%

Able to make sure longer the periodic schedule help communication success rate approach up to 100%

Gathering and Response time of all modem(224pcs) can be shortened from 10~9sec to 9sec

Capacity of 4 time numbers of Modem1

Phase Current Measurement2

Total Information Measurement3

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Thank you for your attentions

ks.jung@kepco.co.kr