I. KEPCO Introduction

Transcription

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2 Ⅰ Ⅱ Ⅲ Ⅳ Ⅴ 2

3 I. KEPCO Introduction 3

4 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 wholly Government-owned corporation 1989 Listed its shares on KRX (Korea Stock Exchange) (21% by IPO) 2001 KEPCO s generation unit was spun off to form six 100%-owned subsidiaries (GENCOs) 2014 KEPCO s headquarter was transferred to Naju-city 4

5 (Capacity : 72,105MW) (Capacity : 21,110MW) : 5 Genco separated, : 1 Nuclear company separated 5

6 Present Future Distributed Energy Resources Storage Devices Smart Home Smart Building Smart Smart Appliance Heating & Cooling In-home Display EVs Effective in CO2 Reduction to Prevent Global Warming Centralized Generation (Massive use of fossil fuel) One way flow of Electric Power and Information Distributed Generation (Renewable) Real time Two-way flow Peak Shaving from Technologies Supplier-oriented network Operation Customer participation 6

7 Loss Rate 29.3% 6.7% 4.7% 3.69% AMI for MV AMI for LV Power IT Installation 170,000 Customers (2012) 11%, 2.5mil householdcompletion %( 11) 5.0%( 11) 7.3%( 11) 6.2%( 11) SCADA/DMS NDIS DAS* 190 systems (2014) DIS, Design, WFM (2014) 53%, 94,500 *Distribution Automation System Power Outage time [Minute/household] ,047 Sales per Employee 24,338 18,358 21,938 [MWh] ( 11) 10( 08) 73( 11) 120( 09) ,982( 09) 11,131( 09) 7,282( 09) 13,071( 09) 7

8 II. Utilizing of TETRA

9 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~ ) 9

10 Distribution Repairing Server AMI Server DAS Server Weather Observation Server Base Station TETRA G/W TETRA NMS Distribution Repairing Vehicles Distribution Automation System Units AMI Units 10 Weather Observation Units

11 Nationwide Radio Coverage : 70% 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 11

12 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] 12

13 III. Test Overview

14 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 14

15 Breaker Breaker1 Breaker2 Breaker3 Breaker4 15

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17 IV. Test Results

18 MCCH SCCH(1) SCCH(2) SCCH(3) MCCH SCCH(1) SCCH(2) SCCH(3) 18

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21 V. Summary

22 Before Solution After Solution Phase current Total Information Phase current Total Information - Over than 99% success rate at 0.5 Sec schedule - Down success rate when reduce schedule - Insufficient success rate (97%) at 5sec schedule - Down success rate when reduce schedule - Very stable success rate when reduce schedule - Down success rate when reduce schedule - 98% success rate at 3~4sec schedule 22

23 . 1 Capacity of 4 time numbers of Modem 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 2 Phase Current Measurement 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 3 Total Information Measurement 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 23

24 Thank you for your attentions 24