Mobile QR Code QR CODE : The Transactions P of the Korean Institute of Electrical Engineers

  1. (Graduate School of Technology Policy, Yonsei Univerity, Seoul, Korea.)



EV, EVC, Data Analysis

1. ์„œ ๋ก 

์ •๋ถ€์˜ ์‹ ๊ธฐํ›„ ์ฒด์ œ ๋Œ€์‘์„ ์œ„ํ•œ โ€˜2030 ์—๋„ˆ์ง€ ์‹ ์‚ฐ์—… ํ™•์‚ฐ ์ „๋žตโ€™ ์ถ”์ง„์„ ์œ„ํ•ด, ์ œ์ฃผ๋„๋Š” 2030๋…„๊นŒ์ง€ ์ „๊ธฐ์ž๋™์ฐจ 100% ์ „ํ™˜์„ ๋ชฉํ‘œ๋กœ ๋ณด๊ธ‰ ์‚ฌ์—…์„ ์ง„ํ–‰ ์ค‘์ด๋‹ค.(1)(2) ์ „๊ธฐ์ฐจ ๋ณด๊ธ‰์„ ์›ํ™œํ•˜๊ฒŒ ํ•˜๊ธฐ ์œ„ํ•ด์„œ ์ถฉ์ „ ์ธํ”„๋ผ์˜ ๊ตฌ์ถ•์ด ๋ฐ˜๋“œ์‹œ ํ•„์š”ํ•˜๋‹ค. ํ˜„์žฌ ์ œ์ฃผ๋„๋Š” ์ „๊ตญ ์ถฉ์ „์†Œ์˜ 32% ์ด์ƒ์— ํ•ด๋‹นํ•˜๋Š” 10,000ํ˜ธ๊ธฐ ์ด์ƒ์„ ๊ตฌ์ถ• ์™„๋ฃŒํ•œ ์ƒํƒœ์ด๋‹ค(3)(4).

์ „๊ธฐ์ฐจ ๋ณด๊ธ‰๋Œ€์ˆ˜๊ฐ€ ์ฆ๊ฐ€ํ•˜๋ฉด ์ถฉ์ „์†Œ ์‚ฌ์šฉ๋ฅ  ๋˜ํ•œ ์ฆ๊ฐ€ํ•˜๊ฒŒ ๋œ๋‹ค(5). ์ด๋Š” ์ „๋ ฅ๊ณ„ํ†ต์„ ์šด์˜ํ•˜๋Š” ์œ ํ‹ธ๋ฆฌํ‹ฐ์‚ฌ์˜ ๋ถ€๋‹ด์„ ๊ฐ€์ค‘์‹œํ‚จ๋‹ค. ์ „๊ธฐ์ฐจ ์ถฉ์ „์ˆ˜์š”๊ฐ€ ํŠน์ • ์‹œ๊ฐ„, ํŠน์ • ์„ ๋กœ์— ์ง‘์ค‘๋œ๋‹ค๋ฉด ๊ณผ๊ฑฐ์—๋Š” ๊ฒฝํ—˜ํ•˜์ง€ ๋ชปํ•œ ๊ณ ์žฅ ํŒŒ๊ธ‰์ด ๋ฐœ์ƒํ•  ์ˆ˜๋„ ์žˆ๋‹ค. ๋”ฐ๋ผ์„œ ๊ณ„ํ†ต์˜ ์•ˆ์ •์„ฑ์„ ๋„๋ชจํ•˜๋ฉด์„œ ์„ ๋กœ์˜ ํ™œ์šฉ๋„๋ฅผ ์ œ๊ณ ํ•˜๊ธฐ ์œ„ํ•ด์„œ๋Š” ์ถฉ์ „์†Œ ์‚ฌ์šฉ์‹ค์  ๋ฐ์ดํ„ฐ๋ฅผ ํ™œ์šฉํ•œ ๋ถ„์„์ด ํ•„์š”ํ•˜๋‹ค.

์ด์— ๋ณธ ๋…ผ๋ฌธ์—์„œ๋Š” ํ•œ์ „์—์„œ ๋ณด์œ ํ•œ ์ œ์ฃผ์ง€์—ญ ์ถฉ์ „์†Œ ๊ณ ๊ฐ์ •๋ณด์™€ ์‹œ๊ฐ„๋Œ€๋ณ„ ์‚ฌ์šฉ์‹ค์ (AMI)๋ฐ์ดํ„ฐ๋ฅผ ๋ฐ”ํƒ•์œผ๋กœ ๋ถ„์„์„ ์‹ค์‹œํ•˜์˜€๋‹ค. ๋จผ์ € ๊ณ ๊ฐ์ •๋ณด์™€ ์‹œ๊ฐ„๋Œ€๋ณ„ ์‚ฌ์šฉ์‹ค์ ์„ ๋ฐ”ํƒ•์œผ๋กœ ์‹œ๊ฐ„๋Œ€๋ณ„ ์ถฉ์ „ํŒจํ„ด์— ์˜ํ–ฅ์„ ๋ฏธ์น  ๊ฒƒ์œผ๋กœ ์˜ˆ์ƒ๋˜๋Š” ์ธ์ž๋ฅผ ๋„์ถœํ•˜์˜€๋‹ค. ์ด ์ธ์ž๋“ค์„ ๊ธฐ์ค€์œผ๋กœ ๊ณ ๊ฐ์„ ๋ถ„๋ฅ˜ํ•˜์—ฌ ์‹œ๊ฐ„๋Œ€๋ณ„ ํ‰๊ท ์‚ฌ์šฉ ์‹ค์ ์„ ๊ณ„์‚ฐ, ๋ถ„์„ํ•˜์˜€๋‹ค. ๋งˆ์ง€๋ง‰์œผ๋กœ ์ด ์ถฉ์ „ ํŒจํ„ด๋“ค์„ ํ•ด๋‹น ์ถฉ์ „์†Œ๋“ค์ด ์—ฐ๊ณ„๋œ ์„ ๋กœ๋ถ€ํ•˜์™€ ๋น„๊ตํ•˜์—ฌ ์ƒ๊ด€๋„์˜ ํฌ๊ธฐ๋ฅผ ํ™•์ธํ•˜์˜€๋‹ค.

์ตœ๊ทผ ์ „๋ ฅ ๋น…๋ฐ์ดํ„ฐ ๊ธฐ์ˆ ์˜ ์ค‘์‹ฌ์€ BTM(Behind The Meter)์œผ๋กœ ์ด๋™ํ•˜๊ณ  ์žˆ์œผ๋ฉฐ, ํŠนํžˆ AMI ์ •๋ณด๋ฅผ ํ™œ์šฉํ•œ ์‹œ๊ณ„์—ด์„ฑ ๋ฐ์ดํ„ฐ ๋ถ„์„์€ ํ•ต์‹ฌ์ด ๋˜๋Š” ๊ธฐ์ˆ ๋กœ ํ–ฅํ›„ ๋‹ค์–‘ํ•œ ๋ถ„์•ผ์— ํ™œ์šฉ๋  ๊ฒƒ์œผ๋กœ ๊ธฐ๋Œ€ํ•˜๊ณ  ์žˆ๋‹ค(6). ๋ณธ ์—ฐ๊ตฌ๋Š” ํ•œ์ „์˜ ์ถฉ์ „์†Œ AMI ๋ฐ์ดํ„ฐ๋ฅผ ์‚ฌ์šฉํ•˜์—ฌ ๊ณ„ํ†ต์˜ํ–ฅ์„ ๋ถ„์„ํ•œ ์ฒซ ๋ฒˆ์งธ ์‚ฌ๋ก€๋กœ์„œ, ๋ถ„์‚ฐ์ „์›์— ๋”ฐ๋ฅธ ๊ณ„ํ†ต ์•ˆ์ •๊ณผ ๋ฐฐ์ „์„ ๋กœ์˜ ํ™œ์šฉ๋„๋ฅผ ๋†’์—ฌ, ์ฒด๊ณ„์ ์ธ ์ „๋ ฅ์„ค๋น„ ๊ด€๋ฆฌ์— ๊ธฐ์—ฌํ•˜๋Š” ์—ฐ๊ตฌ๋ผ๋Š” ์ ์—์„œ ์˜์˜๊ฐ€ ์žˆ๋‹ค.

๊ทธ๋ฆผ. 1. ์ „๊ธฐ์ฐจ ์ถฉ์ „์†Œ ์‚ฌ์šฉํŒจํ„ด ๋ถ„์„๊ฐœ๋…

Fig. 1. Electric Vehicle Charging Station Use Pattern Analysis Concept

../../Resources/kiee/KIEEP.2020.69.2.135/fig1.png

2. ์ „๊ธฐ์ฐจ ์ถฉ์ „์†Œ ๋ฐ์ดํ„ฐ ๋ถ„์„

2.1 ๊ณ ๊ฐ์ •๋ณด ๋ถ„์„

๋ณธ๊ฒฉ์ ์ธ ์ถฉ์ „์‹ค์  ๋ถ„์„์— ์•ž์„œ ํ•œ์ „ ์˜์—…์ •๋ณด์‹œ์Šคํ…œ ๋‚ด์˜ ์ œ์ฃผ์ง€์—ญ ์ถฉ์ „์†Œ ๊ณ ๊ฐ์ •๋ณด ์›๋ณธ ๋ฐ์ดํ„ฐ๋ฅผ ์ถ”์ถœํ•˜์—ฌ ๋ถ„์„ํ•˜์˜€๋‹ค. ์ด๋Š” ์ถฉ์ „์†Œ ์‚ฌ์šฉํŒจํ„ด์˜ ์ฐจ์ด๋ฅผ ๊ฒฐ์ •์ง“๋Š” ์ธ์ž๋ฅผ ๋„์ถœํ•˜์—ฌ, ๊ณ ๊ฐ์„ ๊ทธ ์ธ์ž๋ฅผ ๊ธฐ์ค€์œผ๋กœ ๋ถ„๋ฅ˜ํ•˜๊ณ  ์‹ค์ ๋ถ„์„์„ ์‹ค์‹œํ•˜๊ธฐ ์œ„ํ•จ์ด๋‹ค. ๊ณ ๊ฐ์ •๋ณด ๋ถ„์„์— ์‚ฌ์šฉ๋œ ๋ฐ์ดํ„ฐ์˜ ํฌ๊ธฐ(๊ณ ๊ฐ์ˆ˜ร—์ปฌ๋Ÿผ) : 10,164ร—14์ด๊ณ , ๋ฐ์ดํ„ฐ์˜ ํฌํ•จ๋‚ด์šฉ์€ 1์ฐจ์‚ฌ์—…์†Œ, 2์ฐจ์‚ฌ์—…์†Œ, ๋ณ€์ „์†Œ, ๋ฐฐ์ „์„ ๋กœ, ๊ณ ๊ฐ๋ฒˆํ˜ธ, ์›๊ฒฉ๊ฒ€์นจ(AMI ์„ค์น˜์—ฌ๋ถ€), ๊ณ ๊ฐ๋ช…, ์ฃผ์†Œ, ์ฃผ์†Œ(๋„๋กœ๋ช…), ์ž์žฌ๋ฒˆํ˜ธ, ๊ณ„๊ธฐ์ข…๋ฅ˜, ๊ณ„๊ธฐ๋ฒˆํ˜ธ, ๊ณ„์•ฝ์ „๋ ฅ, ๊ณ„์•ฝ์ข…๋ณ„ใ€€๋“ฑ์ด๋‹ค.

์ด ์›๋ณธ ๋ฐ์ดํ„ฐ๋ฅผ ๊ฒฐ์ธก์น˜(Missing Values) ๋ฐ ์ด์ƒ์น˜(Outliers) ์ฒ˜๋ฆฌ ๋“ฑ๊ณผ ๊ฐ™์€ ์ „์ฒ˜๋ฆฌ ์ž‘์—…์„ ์‹ค์‹œํ•˜์˜€๋‹ค. ๊ทธ๋ฆฌ๊ณ  ๊ณ ๊ฐ๋ช…, ์ฃผ์†Œ ์ •๋ณด๋ฅผ ๋ฐ”ํƒ•์œผ๋กœ ๊ณ ๊ฐ์ข…๋ฅ˜, ์„ค์น˜์ง€์—ญ, ์ถฉ์ „์†Œ ์ขŒํ‘œ ๋ถ€๊ฐ€์ •๋ณด ํ•ญ๋ชฉ์„ ์ƒ์„ฑํ•˜์˜€๋‹ค. ๊ณ ๊ฐ์ข…๋ฅ˜๋Š” ๊ฐœ์ธ, ๋ฏผ๊ฐ„(๊ธฐ์—…), ๊ตญ๊ณต๋ฆฝ๋กœ ๊ตฌ์„ฑํ•˜๊ณ , ์„ค์น˜์ง€์—ญ์€ ๋„์‹ฌ, ์‹œ๊ณจ(์™ธ๊ณฝ)์œผ๋กœ ๊ตฌ์„ฑํ•˜๋ฉฐ, ์ถฉ์ „์†Œ ์ขŒํ‘œ๋Š” ์œ„๋„, ๊ฒฝ๋„ ์ขŒํ‘œ(์ง€๋„ ์‹œ๊ฐํ™”์šฉ)๋กœ ๊ตฌ์„ฑํ•œ๋‹ค.

๊ณ ๊ฐ์ •๋ณด๋ฅผ ๋ถ„์„ํ•  ๋•Œ์—๋Š” ๋ฏธ๋ฆฌ ์„ค์ •ํ•œ ๋ถ„๋ฅ˜ ๊ธฐ์ค€์— ๋”ฐ๋ผ ์ถฉ์ „์†Œ ์ˆ˜๋Ÿ‰์ด๋‚˜ ๊ณ„์•ฝ์ „๋ ฅ์˜ ๋ถ„ํฌ๋ฅผ ์ค‘์‹ฌ์œผ๋กœ ๋ถ„์„ํ•˜์˜€๋‹ค. ๋ถ„๋ฅ˜ ๊ธฐ์ค€์˜ ์ˆ˜๋ฆฝ์€ ๋‹ค์Œ๊ณผ ๊ฐ™์€ ๊ฐ€์„ค์„ ๊ธฐ๋ฐ˜์œผ๋กœ ์‹ค์‹œํ•˜์˜€๋‹ค.

๊ฐ€์„ค1. ๋ฐฐ์ „ ์„ ๋กœ์— ์—ฐ๊ณ„๋œ ์ถฉ์ „์†Œ ๊ณ ๊ฐ์˜ ์ˆ˜๋Š” ์ตœ๋Œ€๋ถ€ํ•˜ ํ˜•์„ฑ์— ์˜ํ–ฅ์„ ๋ฏธ์นœ๋‹ค.

๊ฐ€์„ค2. ๋ฐฐ์ „ ์„ ๋กœ์— ์—ฐ๊ณ„๋œ ์ถฉ์ „์†Œ ๊ณ ๊ฐ์˜ ๊ณ„์•ฝ์ „๋ ฅ์˜ ํฌ๊ธฐ๋Š” ์ตœ๋Œ€๋ถ€ํ•˜ ํ˜•์„ฑ์— ์˜ํ–ฅ์„ ๋ฏธ์นœ๋‹ค.

๊ฐ€์„ค3. ๊ณ ๊ฐ์œ ํ˜•(๊ด€ํ•  ์‚ฌ์—…์†Œ, ๊ณ ๊ฐ์ข…๋ฅ˜, ์„ค์น˜์ง€์—ญ, ์—ฐ๊ณ„ ์„ ๋กœ ๋“ฑ)์— ๋”ฐ๋ผ ์ถฉ์ „๊ณ ๊ฐ์˜ ์ˆ˜, ๊ณ„์•ฝ์ „๋ ฅ์˜ ํฌ๊ธฐ๋Š” ๋‹ค๋ฅธ ํŠน์ง•์„ ๋ณด์ธ๋‹ค.

๊ทธ๋ฆผ 2๋Š” ๊ณ ๊ฐ์ •๋ณด ๋ถ„์„๊ฒฐ๊ณผ ์ค‘ ๊ณ ๊ฐ์ข…๋ฅ˜์— ๋”ฐ๋ฅธ ๋ถ„์„๊ฒฐ๊ณผ๋ฅผ ๋„ํ‘œํ™” ํ•œ ๊ฒƒ์ด๋‹ค. ๋ณธ ์—ฐ๊ตฌ์—์„œ๋Š” ๊ณ ๊ฐ์˜ ์ข…๋ฅ˜๋ฅผ ๊ฐœ์ธ, ๋ฏผ๊ฐ„(๊ธฐ์—…), ๊ตญ๊ณต๋ฆฝ ๊ธฐ์—…์œผ๋กœ ๊ตฌ๋ถ„ํ•˜๊ณ  ์žˆ๋‹ค. ์ œ์ฃผ์ง€์—ญ ์ถฉ์ „์†Œ ๊ณ ๊ฐ์˜ ๋Œ€๋ถ€๋ถ„์€ ๊ฐœ์ธ ๊ณ ๊ฐ์ด๋‹ค. ๊ณ„์•ฝ์ „๋ ฅ์˜ ์ „์ฒด ํ•ฉ๋„ ๊ฐ€์žฅ ํฌ๋‹ค. ํ•˜์ง€๋งŒ ์ถฉ์ „์†Œ๋ณ„ ๊ณ„์•ฝ์ „๋ ฅ์˜ ํ‰๊ท  ๊ณ ๊ฐ์€ 7.14kW ์ •๋„๋กœ ๋ฏผ๊ฐ„, ๊ตญ๊ณต๋ฆฝ์— ๋น„ํ•ด ์ž‘๋‹ค. ๋ฐ˜๋ฉด, ๋ฏผ๊ฐ„ ๋ฐ ๊ตญ๊ณต๋ฆฝ ๊ธฐ์—… ๊ณ ๊ฐ์˜ ์ˆ˜๋Š” ๊ฐœ์ธ์— ๋น„ํ•ด ์ ์ง€๋งŒ ํ‰๊ท  ๊ณ„์•ฝ์ „๋ ฅ์ด 30kW ์ด์ƒ์œผ๋กœ ๋Œ€ํ˜•๊ณ ๊ฐ์„ ๋‹ค์ˆ˜ ํฌํ•จํ•˜๊ณ  ์žˆ๋‹ค.

๊ทธ๋ฆผ. 2. ๊ณ ๊ฐ์ข…๋ฅ˜๋ณ„ ์ถฉ์ „๊ณ ๊ฐ ์ˆ˜ / ๊ณ„์•ฝ์ „๋ ฅ ๋ถ„์„๊ฒฐ๊ณผ

Fig. 2. Number of charging customers by customer type / Result of contract power analysis

../../Resources/kiee/KIEEP.2020.69.2.135/fig2.png

์•ž์„œ ์†Œ๊ฐœํ•œ ๊ณ ๊ฐ์ •๋ณด ์ „์ฒ˜๋ฆฌ ๋‹จ๊ณ„์—์„œ ์ถฉ์ „์†Œ์˜ ์„ค์น˜์ง€์—ญ ํ•ญ๋ชฉ์„ ์ถ”๊ฐ€ํ•˜๊ณ  ์ถฉ์ „์†Œ ์œ„์น˜๋ฅผ ๋„์‹ฌ/์™ธ๊ณฝ์œผ๋กœ ๊ตฌ๋ถ„ํ•˜์˜€๋‹ค. ๊ทธ๋ฆผ 3์€ ์„ค์น˜์ง€์—ญ๋ณ„ ์ถฉ์ „์†Œ์˜ ์ˆ˜์™€ ๊ณ„์•ฝ์ „๋ ฅ ๋ถ„ํฌ๋ฅผ ๋‚˜ํƒ€๋‚ธ ๊ฒƒ์ด๋‹ค. ์ผ๋ฐ˜์ ์œผ๋กœ ์˜ˆ์ƒํ•˜๋Š” ๋ฐ”์™€ ๊ฐ™์ด ๋„์‹ฌ์ง€์—ญ์— ์ถฉ์ „์†Œ๊ฐ€ ๋‹ค์ˆ˜ ์ง‘์ค‘๋˜์–ด ์žˆ๊ณ , ๊ณ„์•ฝ์ „๋ ฅ์˜ ํ•ฉ๊ณผ ํ‰๊ท  ์ธก๋ฉด์—์„œ๋„ ํฐ ๊ฒƒ์„ ํ™•์ธํ•  ์ˆ˜๊ฐ€ ์žˆ๋‹ค.

๊ทธ๋ฆผ. 3. ์ถฉ์ „์†Œ๊ณ ๊ฐ ์„ค์น˜์ง€์—ญ ๋ณ„ ๋ถ„์„๊ฒฐ๊ณผ

Fig. 3. Analysis result by charging station installation area

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๊ทธ๋ฆผ. 4. ๋ฐฐ์ „์„ ๋กœ๋ณ„ ์—ฐ๊ณ„ ์ถฉ์ „์†Œ ์ •๋ณด ๋ถ„์„๊ฒฐ๊ณผ

Fig. 4. Analysis results of charging station information by distribution line

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๊ทธ๋ฆผ 4๋Š” ๊ฐ ๋ฐฐ์ „์„ ๋กœ์— ์—ฐ๊ณ„๋œ ์ถฉ์ „์†Œ์˜ ์ˆ˜๋Ÿ‰๊ณผ ๊ณ„์•ฝ์ „๋ ฅ์˜ ํ•ฉ์„ ์ง€๋„ ์ขŒํ‘œ ๋ผ์ด๋ธŒ๋Ÿฌ๋ฆฌ๋กœ ์‹œ๊ฐํ™” ํ•œ ๊ฒƒ์ด๋‹ค. ๋ถ„์„๊ฒฐ๊ณผ์— ๋”ฐ๋ฅด๋ฉด ์ถฉ์ „์†Œ ์ˆ˜์™€ ๊ณ„์•ฝ์ „๋ ฅ ํฌ๊ธฐ์˜ ๋Œ€๋‹ค์ˆ˜๋Š” ์ œ์ฃผ๊ณตํ•ญ ์ธ๊ทผ์— ์ง‘์ค‘๋˜์–ด ์žˆ์Œ์„ ์•Œ ์ˆ˜ ์žˆ์—ˆ๋‹ค. ๊ทธ๋ฆฌ๊ณ  ์ผ๋ถ€๋Š” ์„œ๊ท€ํฌ์‹œ ์ธ๊ทผ์— ๋ถ„ํฌ๋˜์–ด ์žˆ์—ˆ๋‹ค. ์ œ์ฃผ ๋™, ์„œ ์ง€์—ญ์€ ์ƒ๋Œ€์ ์œผ๋กœ ์ถฉ์ „์†Œ๊ฐ€ ๋œ ์„ค์น˜๋˜์–ด ์žˆ์—ˆ๋‹ค.

2.2 ์ถฉ์ „์†Œ ์‚ฌ์šฉ์‹ค์ ๊ณผ ๋ฐฐ์ „์„ ๋กœ ๋ถ€ํ•˜ ํŒจํ„ด๋ถ„์„

๊ณ ๊ฐ์ •๋ณด ๋ถ„์„๋‹จ๊ณ„์—์„œ๋Š” ์ œ์ฃผ ์ถฉ์ „์†Œ ๊ณ ๊ฐ 10,164ํ˜ธ ์ „์ฒด๋ฅผ ๋Œ€์ƒ์œผ๋กœ ๋ถ„์„์„ ์‹ค์‹œํ•˜์˜€๋‹ค. ์ถฉ์ „์†Œ์˜ ์‹œ๊ฐ„๋Œ€๋ณ„ ์‚ฌ์šฉํŒจํ„ด์„ ๋ถ„์„ํ•˜๊ธฐ ์œ„ํ•ด์„œ๋Š” ๊ณ ๊ฐ๋งˆ๋‹ค AMI๊ฐ€ ์„ค์น˜๋˜์–ด ์žˆ์–ด์•ผ ํ•œ๋‹ค. ํ•˜์ง€๋งŒ ์ œ์ฃผ์ง€์—ญ ์ „์ฒด์— AMI๊ฐ€ ์„ค์น˜๋˜์ง€ ์•Š์€ ๊ด€๊ณ„๋กœ AMI๊ฐ€ ์„ค์น˜๋œ 2,067ํ˜ธ ๊ณ ๊ฐ๋งŒ์„ ๋Œ€์ƒ์œผ๋กœ ๋ถ„์„์„ ์‹ค์‹œํ•˜์˜€๋‹ค. ๋ถ„์„์— ์‚ฌ์šฉ๋œ ์ฃผ์š” ๋ฐ์ดํ„ฐ ๋ฆฌ์ŠคํŠธ๋Š” ์ฒซ์งธ๋Š” ์ œ์ฃผ ์ถฉ์ „์†Œ AMI ์„ค์น˜ ๊ณ ๊ฐ์˜ โ€™18.1~โ€™19.8 ๊ธฐ๊ฐ„์˜ ์‹œ๊ฐ„๋Œ€๋ณ„ ์ถฉ์ „์‹ค์ ์ด๋‹ค. ๋‘˜์งธ๋Š” ์ œ์ฃผ ๋ฐฐ์ „์„ ๋กœ ์ „์ฒด ๋ถ€ํ•˜๋ฐ์ดํ„ฐ๋กœ, โ€™18.1~โ€™19.8 ๊ธฐ๊ฐ„์˜ 150๊ฐœ ์„ ๋กœ ๋ถ€ํ•˜๋ฐ์ดํ„ฐ์ด๋‹ค.

๋ถ„์„์„ ์‹œํ–‰ํ•˜๊ธฐ ์ „์— ์šฐ์„  ์ „์ฒ˜๋ฆฌ ๋‹จ๊ณ„์—์„œ ์‹ค์  ๋ฐ ๋ถ€ํ•˜ ๋ฐ์ดํ„ฐ์— ํฌํ•จ๋œ ๊ฒฐ์ธก์น˜์™€ ์ด์ƒ์น˜๋ฅผ ์ฒ˜๋ฆฌํ•˜์˜€๋‹ค. ์—ฌ๊ธฐ์— ์ถ”๊ฐ€๋กœ ๊ณ„์ธก์‹œ์ ์˜ ๋‚ ์งœ์ •๋ณด(์›”, ์ผ, ์š”์ผ, ๊ทผ๋ฌด์ผ/๊ณตํœด์ผ, ๊ณ„์ ˆ ๋“ฑ)๋ฅผ ๊ทธ๋ฆผ 5์™€ ๊ฐ™์ด ์ถ”๊ฐ€ํ•˜์˜€๋‹ค. ์ด๋Š” ์•ž์— 2.1์—์„œ ์ถ”์ถœํ•œ ๊ณ ๊ฐ์œ ํ˜• ์ •๋ณด ์™ธ์— ๋‚ ์งœ์ •๋ณด๋„ ํŒจํ„ด์— ์˜ํ–ฅ์„ ๋ฏธ์น  ๊ฒƒ์œผ๋กœ ์˜ˆ์ƒํ•˜์˜€๊ธฐ ๋•Œ๋ฌธ์ด๋‹ค.

๊ทธ๋ฆผ. 5. ๋‚ ์งœ ์ •๋ณด ์ถ”๊ฐ€ ๊ฒฐ๊ณผ

Fig. 5. Result of adding date information

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๋ฐ์ดํ„ฐ๋ถ„์„์„ ์‹ค์‹œํ•  ๋•Œ์—๋Š” ๋‹ค์Œ ๊ฐ€์„ค์„ ๊ธฐ์ค€์œผ๋กœ ์ง„ํ–‰ํ•˜์˜€๋‹ค. ๋‚ ์งœ ์œ ํ˜•์€ ๊ณ„์ ˆ, ๊ทผ๋ฌด์ผ/๊ณตํœด์ผ๋กœ ๊ตฌ๋ถ„ํ•œ๋‹ค. ๊ณ ๊ฐ ์œ ํ˜•์€ ๊ณ ๊ฐ์ข…๋ฅ˜(๊ฐœ์ธ, ๋ฏผ๊ฐ„, ๊ตญ๊ณต๋ฆฝ), ์„ค์น˜ ์ง€์—ญ(๋„์‹ฌ, ์™ธ๊ณฝ)์œผ๋กœ ๊ตฌ๋ถ„ํ•œ๋‹ค. ์„ ๋กœ ์œ ํ˜•์€ ์„ค์น˜ ์ง€์—ญ(๋„์‹ฌ, ์™ธ๊ณฝ)์œผ๋กœ ๊ตฌ๋ถ„ํ•œ๋‹ค.

๊ฐ€์„ค1. ์ถฉ์ „์ „๋ ฅ์€ ๋‚ ์งœ ์œ ํ˜• ๋ฐ ๊ณ ๊ฐ ์œ ํ˜•์— ๋”ฐ๋ผ ๊ณ ์œ ์˜ ํŒจํ„ด(์‹œ๊ฐ„๋Œ€ ํ‰๊ท )์„ ๊ฐ€์ง„๋‹ค.

๊ฐ€์„ค2. ๋ฐฐ์ „์„ ๋กœ ๋ถ€ํ•˜๋Š” ๋‚ ์งœ ์œ ํ˜• ๋ฐ ์„ค์น˜ ์ง€์—ญ์— ๋”ฐ๋ผ ๊ณ ์œ ์˜ ํŒจํ„ด(์‹œ๊ฐ„๋Œ€ ํ‰๊ท )์„ ๊ฐ€์ง„๋‹ค.

๋‚ ์งœ ์œ ํ˜•์ด ํŒจํ„ด์— ๋ฏธ์น˜๋Š” ์˜ํ–ฅ์„ ํ™•์ธํ•˜๊ธฐ ์œ„ํ•ด ๋จผ์ € ์ „์ฒด ๋ฐ์ดํ„ฐ๋ถ„์„์„ ์‹ค์‹œํ•˜์˜€๊ณ , ์ดํ›„ ๊ณ ๊ฐ์œ ํ˜• ๋ฐ ์„ค์น˜์ง€์—ญ์— ๋”ฐ๋ฅธ ๋ถ„์„์„ ์‹ค์‹œํ•˜์˜€๋‹ค.

2.2.1 ์ „์ฒด ์‹ค์  ๋ถ„์„

๊ทธ๋ฆผ 6์€ ์ „์ฒด ์ถฉ์ „์†Œ์˜ ์‹œ๊ฐ„๋Œ€๋ณ„ ํ‰๊ท  ์‚ฌ์šฉ์‹ค์ ์„ ๋‚˜ํƒ€๋‚ธ ๊ฒƒ์ด๋‹ค. ๊ณ„์ ˆ๋ณ„, ๊ณตํœด์ผ/๊ทผ๋ฌด์ผ๋ณ„ ํŒจํ„ด์ด ์œ ์‚ฌํ•˜๋‹ค. ๊ทธ๋ฆฌ๊ณ  ๊ณ„์ ˆ, ๊ทผ๋ฌด์ผ/๊ณตํœด์ผ์— ๋”ฐ๋ฅธ ํŒจํ„ด์˜ ์ฐจ์ด๋„ ์ ๋‹ค. ๋‘ ๊ฒฝ์šฐ ๋ชจ๋‘ ์˜ค์ „ 5, 6์‹œ ๊ฒฝ์— ์ตœ์†Œ๊ฐ’์„ ํ˜•์„ฑํ•˜๊ณ  ์ตœ๋Œ€๊ฐ’์€ 0์‹œ๊ฒฝ์— ๋ฐœ์ƒํ•œ๋‹ค.

๊ทธ๋ฆผ. 6. ์ „์ฒด ์ถฉ์ „์†Œ์˜ ์‹œ๊ฐ„๋Œ€๋ณ„ ํ‰๊ท  ์‚ฌ์šฉ์‹ค์ (kW)

Fig. 6. Average usage(kW) by time of all charging stations

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๊ทธ๋ฆผ. 7. ๋ฐฐ์ „์„ ๋กœ์˜ ์‹œ๊ฐ„๋Œ€๋ณ„ ํ‰๊ท  ๋ถ€ํ•˜ํŒจํ„ด(MW)

Fig. 7. Average load(MW) pattern by time of distribution line

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๊ทธ๋ฆผ 7์€ ๋ฐฐ์ „์„ ๋กœ ๋ถ€ํ•˜์˜ ์‹œ๊ฐ„๋Œ€๋ณ„ ํ‰๊ท ์„ ์‹œ๊ฐํ™”ํ•œ ๊ฒƒ์ด๋‹ค. ์•ž์˜ ๊ทธ๋ฆผ 6 ์ถฉ์ „์†Œ ์‚ฌ์šฉ์‹ค์ ์˜ ์˜ˆ์™€ ๋ฐ˜๋Œ€๋กœ ๊ณ„์ ˆ, ๊ณตํœด์ผ/๊ทผ๋ฌด์ผ์— ๋”ฐ๋ฅธ ์‹œ๊ฐ„๋Œ€๋ณ„ ํŒจํ„ด์˜ ์ฐจ์ด๊ฐ€ ๋šœ๋ ทํ•˜๋‹ค. ํŠนํžˆ ๊ณตํœด์ผ/๊ทผ๋ฌด์ผ์— ๋”ฐ๋ฅธ ํŒจํ„ด์˜ ์ฐจ์ด๋ฅผ ์œ ์‹ฌํžˆ ์‚ดํŽด๋ณผ ํ•„์š”๊ฐ€ ์žˆ๋‹ค. ๊ณตํœด์ผ, ๊ทผ๋ฌด์ผ ๋ชจ๋‘ ์ตœ๋Œ€๊ฐ’์„ 20, 21์‹œ ๊ฒฝ์— ํ˜•์„ฑํ•˜๊ณ  ์žˆ๋‹ค. ํ•˜์ง€๋งŒ ๊ทผ๋ฌด์ผ์˜ ์ตœ์†Œ๊ฐ’์€ ์˜ค์ „ 4, 5์‹œ๊ฒฝ์— ๋ฐœ์ƒํ•˜๋Š” ๋ฐ˜๋ฉด, ๊ณตํœด์ผ์˜ ์ตœ์†Œ๊ฐ’์€ ์˜คํ›„ 13์‹œ ๊ฒฝ์— ๋ฐœ์ƒํ•œ๋‹ค. ๊ทธ ์›์ธ์œผ๋กœ๋Š” ๊ณตํœด์ผ ์ƒ์‚ฐํ™œ๋™์œผ๋กœ ์ธํ•œ ์ „๋ ฅ ์‚ฌ์šฉ๋Ÿ‰ ๊ฐ์†Œ, ์‹ ์žฌ์ƒ ๋ฐœ์ „ ์œ ์ž… ๋“ฑ์„ ๋“ค ์ˆ˜๊ฐ€ ์žˆ๋‹ค.

2.2.2 ๊ณ ๊ฐ ์œ ํ˜•๋ณ„ ๋ถ„์„

๋ณธ ๋‹จ๊ณ„์—์„œ๋Š” ๊ณ ๊ฐ์ •๋ณด ๋ถ„์„๋‹จ๊ณ„์—์„œ ์„ค์ •ํ•œ ๊ฐœ์ธ, ๋ฏผ๊ฐ„(๊ธฐ์—…), ๊ตญ๊ณต๋ฆฝ(๊ธฐ๊ด€)๋ณ„ ์‹œ๊ฐ„๋Œ€๋ณ„ ์ถฉ์ „์†Œ ์‚ฌ์šฉํŒจํ„ด์˜ ์ฐจ์ด๋ฅผ ๋ถ„์„ํ•˜์˜€๋‹ค. ๋ฐฐ์ „์„ ๋กœ๋Š” ๊ณ ๊ฐ ์œ ํ˜•์— ๋”ฐ๋ฅธ ๋ถ„๋ฅ˜๋ฅผ ํ•  ์ˆ˜ ์—†์œผ๋ฏ€๋กœ, ์ถฉ์ „์†Œ ์‚ฌ์šฉ์‹ค์ ์— ๋Œ€ํ•œ ๋ถ„์„๊ฒฐ๊ณผ๋งŒ ์ •๋ฆฌํ•˜์˜€๋‹ค.

๊ทธ๋ฆผ 8์„ ์‚ดํŽด๋ณด๋ฉด ๊ฐ ๊ณ ๊ฐ ์œ ํ˜•๋ณ„๋กœ ์‚ฌ์šฉํŒจํ„ด์˜ ์ฐจ์ด๊ฐ€ ๋šœ๋ ทํ•˜๋‹ค. ํŠนํžˆ ๊ฐœ์ธ ๊ณ ๊ฐ๊ณผ ๋ฏผ๊ฐ„/๊ตญ๊ณต๋ฆฝ ๊ณ ๊ฐ์˜ ์‚ฌ์šฉํŒจํ„ด์˜ ์ฐจ์ด๊ฐ€ ํฌ๊ฒŒ ๋‚˜ํƒ€๋‚œ๋‹ค. ๊ฐœ์ธ ๊ณ ๊ฐ์˜ ์‚ฌ์šฉ์‹ค์ ์€ ์ตœ์†Œ๊ฐ’์ด 5, 6์‹œ๊ฒฝ์—, ์ตœ๋Œ€๊ฐ’์ด 0์‹œ์— ๋‚˜ํƒ€๋‚˜๋Š” ๋ฐ˜๋ฉด, ๋ฏผ๊ฐ„/๊ตญ๊ณต๋ฆฝ ๊ณ ๊ฐ์€ ์ตœ์†Œ๊ฐ’์ด 5, 6์‹œ ๊ฒฝ์—, ์ตœ๋Œ€๊ฐ’์ด 20์‹œ ๊ฒฝ์— ๋ฐœ์ƒํ•œ๋‹ค. ์ถฉ์ „์†Œ๋ณ„ ํ‰๊ท ์ „๋ ฅ์˜ ํฌ๊ธฐ์—๋„ ์ฐจ์ด๊ฐ€ ์žˆ๋‹ค. ๊ฐœ์ธ ๊ณ ๊ฐ์˜ ์ถฉ์ „์ „๋ ฅ์˜ ํฌ๊ธฐ๊ฐ€ ์ƒ๋Œ€์ ์œผ๋กœ ์ž‘์€ ํŽธ์ด๋‹ค. ์•ž์—์„œ ํ™•์ธํ•œ ๋ฐ”์™€ ๊ฐ™์ด ๊ณ„์ ˆ๋ณ„, ํœด์ผ/๊ทผ๋ฌด์ผ ๊ฐ„ ํŒจํ„ด์˜ ์ฐจ์ด๋Š” ํฌ์ง€ ์•Š๋‹ค.

๊ทธ๋ฆผ. 8. ์ถฉ์ „์†Œ ๊ณ ๊ฐ์œ ํ˜•๋ณ„ ์‹œ๊ฐ„๋Œ€๋ณ„ ํ‰๊ท  ์‚ฌ์šฉ์‹ค์ (kW)

Fig. 8. Average usage(kW) by time of charging station customer type

../../Resources/kiee/KIEEP.2020.69.2.135/fig8.png

2.2.2 ์„ค์น˜ ์ง€์—ญ๋ณ„ ๋ถ„์„

๋ณธ ๋‹จ๊ณ„์—์„œ๋Š” ์ถฉ์ „์†Œ์™€ ๋ฐฐ์ „์„ ๋กœ์˜ ์„ค์น˜์ง€์—ญ(๋„์‹ฌ, ์™ธ๊ณฝ) ๊ตฌ๋ถ„์— ๋”ฐ๋ผ์„œ ํŒจํ„ด์˜ ์ฐจ์ด๊ฐ€ ์กด์žฌํ•˜๋Š”์ง€ ๋ถ„์„์„ ์‹ค์‹œํ•˜์˜€๋‹ค. ์„ค์น˜์ง€์—ญ์€ ๊ณ ๊ฐ์ •๋ณด์— ์ž…๋ ฅ๋œ ์ฃผ์†Œ์ •๋ณด๋ฅผ ๋ฐ”ํƒ•์œผ๋กœ ํ–‰์ •๊ตฌ์—ญ ์ƒ โ€˜๋™โ€™์— ์œ„์น˜ํ•˜๋ฉด ๋„์‹ฌ์œผ๋กœ, โ€˜๋ฆฌโ€™์— ์œ„์น˜ํ•˜๋ฉด ์™ธ๊ณฝ์ง€์—ญ์œผ๋กœ ๋ถ„๋ฅ˜ํ•˜์˜€๋‹ค.

๊ทธ๋ฆผ 9 ์ถฉ์ „์†Œ ์„ค์น˜์ง€์—ญ์— ๋”ฐ๋ฅธ ์‹œ๊ฐ„๋Œ€๋ณ„ ํ‰๊ท  ์‚ฌ์šฉ์‹ค์ (kW) ๋น„๊ต์ž๋ฃŒ๋ฅผ ๋ณด๋ฉด ๋„์‹ฌ๊ณผ ์™ธ๊ณฝ ๋‘ ์ง€์—ญ์—์„œ ๋ชจ๋‘ ์œ ์‚ฌํ•œ ํŒจํ„ด์„ ๋‚˜ํƒ€๋‚ด์—ˆ๋‹ค. ๋‘ ์ง€์—ญ ๋ชจ๋‘ ์˜ค์ „ 5, 6์‹œ์— ์ตœ์†Œ๊ฐ’์„, 0์‹œ์— ์ตœ๋Œ€๊ฐ’์„ ํ˜•์„ฑํ•˜์˜€๋‹ค.

๊ทธ๋ฆผ. 9. ์ถฉ์ „์†Œ ์„ค์น˜์ง€์—ญ์— ๋”ฐ๋ฅธ ์‹œ๊ฐ„๋Œ€๋ณ„ ํ‰๊ท  ์‚ฌ์šฉ์‹ค์ (kW) ๋น„๊ต

Fig. 9. Comparison of average usage(kW) by time zone according to charging station installation area

../../Resources/kiee/KIEEP.2020.69.2.135/fig9.png

๊ทธ๋ฆผ. 10. ๋ฐฐ์ „์„ ๋กœ ์„ค์น˜์ง€์—ญ์— ๋”ฐ๋ฅธ ์‹œ๊ฐ„๋Œ€๋ณ„ ํ‰๊ท  ๋ถ€ํ•˜ํŒจํ„ด(MW) ๋น„๊ต

Fig. 10. Comparison of average load(MW) pattern by time zone according to distribution line installation area

../../Resources/kiee/KIEEP.2020.69.2.135/fig10.png

๋ฐ˜๋ฉด ๊ทธ๋ฆผ 10์„ ๋ณด๋ฉด ๋ฐฐ์ „์„ ๋กœ์˜ ๋ถ€ํ•˜ํŒจํ„ด์€ ์ง€์—ญ์— ๋”ฐ๋ฅธ ์ฐจ์ด๊ฐ€ ๋šœ๋ ทํ•˜๊ฒŒ ๋‚˜ํƒ€๋‚œ๋‹ค. ๋„์‹ฌ์ง€์—ญ์€ ์˜ค์ „ 5์‹œ์— ์ตœ์†Œ๊ฐ’์„ ํ˜•์„ฑํ•œ๋‹ค. ๋ฐ˜๋ฉด ์™ธ๊ณฝ์ง€์—ญ์€ ์˜คํ›„ 13์‹œ์— ์ตœ์†Œ๊ฐ’์„ ํ˜•์„ฑํ•˜๊ณ  ์žˆ๋‹ค. ๋‘ ์ง€์—ญ์˜ ์ตœ์†Œ๊ฐ’ ๋ฐœ์ƒ์ง€์  ์ฐจ์ด์˜ ์›์ธ์„ ์ง€๋ฐฉ์— ์ง‘์ค‘๋œ ์‹ ์žฌ์ƒ๋ฐœ์ „์„ ์—ฐ๊ด€ํ•˜์—ฌ ๋„์ถœํ•  ์ˆ˜ ์žˆ๋‹ค. ์ฆ‰, ์ผ๋ฐ˜์ ์œผ๋กœ ๋„์‹ฌ์ง€๋Š” ์ธ๊ตฌ๋‚˜ ์ƒ์—…์‹œ์„ค์ด ๋ฐ€์ง‘๋˜์–ด ์žˆ๋Š” ์ „๋ ฅ์†Œ๋น„ ์ค‘์‹ฌ์ง€์—ญ์ด๊ณ , ์™ธ๊ณฝ์ง€์—ญ์€ ์œ ํœด์šฉ์ง€๊ฐ€ ์ƒ๋Œ€์ ์œผ๋กœ ๋งŽ์•„์„œ ํƒœ์–‘๊ด‘๊ณผ ๊ฐ™์€ ์‹ ์žฌ์ƒ๋ฐœ์ „์ด ์ง‘์ค‘๋˜์–ด ์žˆ๋‹ค. ์ด๋ฅผ ๊ฐ์•ˆํ•˜๋ฉด ๋‚ฎ ์‹œ๊ฐ„๋Œ€์—๋Š” ํƒœ์–‘๊ด‘ ๋ฐœ์ „์ถœ๋ ฅ์ด ์ปค์„œ ๋ถ€ํ•˜๊ฐ€ ์ค„์–ด๋“œ๋Š” ๊ฒƒ์ฒ˜๋Ÿผ ๋ณด์ด๊ณ , ํ•ด๊ฐ€์ง€๋ฉด ๋ถ€ํ•˜๊ฐ€ ๊ธ‰์ƒ์Šนํ•˜๋Š” ํ˜„์ƒ์— ๋”ฐ๋ฅธ ์˜ํ–ฅ์ž„์„ ์ถ”๋ก ๊ฐ€๋Šฅํ•˜๋‹ค. ๋‘ ์ง€์—ญ์˜ ์ตœ์†Œ๊ฐ’ ๋ฐœ์ƒ์ง€์  ์ฐจ์ด์˜ ์›์ธ์„ ์ •ํ™•ํ•˜๊ฒŒ ํŒŒ์•…ํ•˜๋Š” ๊ฒƒ์€ ์ถ”๊ฐ€์ ์ธ ์ง€์—ญ ๋ฐ์ดํ„ฐ ์ˆ˜์ง‘์„ ํ†ตํ•ด์„œ ๋ถ„์„์ด ๊ฐ€๋Šฅํ•˜๋‹ค๊ณ  ํŒ๋‹จํ•˜๋ฉฐ, ๋ณธ ๋…ผ๋ฌธ ๋ฐฉํ–ฅ๊ณผ ์ฐจ์ด๊ฐ€ ์žˆ์œผ๋ฏ€๋กœ, ์ด๋Š” ํ›„์† ์—ฐ๊ตฌ๊ณผ์ œ๋กœ ์ง„ํ–‰ํ•˜๊ธฐ๋กœ ํ•œ๋‹ค.

2.2.4 ๋ถ„์„๊ฒฐ๊ณผ ์ •๋ฆฌ

๋ณธ ์ ˆ์—์„œ๋Š” ์ถฉ์ „์†Œ ์‚ฌ์šฉ์‹ค์ ๊ณผ ๋ฐฐ์ „์„ ๋กœ์˜ ๋ถ€ํ•˜์˜ ์‹œ๊ฐ„๋Œ€๋ณ„ ํ‰๊ท  ํฌ๊ธฐ๋ฅผ ๋ถ„์„ํ•˜์˜€๋‹ค. ๊ฐ ๋ฐ์ดํ„ฐ๋Š” ๋‚ ์งœ์ •๋ณด(๊ณ„์ ˆ, ๊ณตํœด์ผ/๊ทผ๋ฌด์ผ), ๊ณ ๊ฐ์œ ํ˜•(๊ฐœ์ธ/๋ฏผ๊ฐ„/๊ตญ๊ณต๋ฆฝ, ๋„์‹ฌ/์™ธ๊ณฝ) ๋“ฑ์— ๋”ฐ๋ผ ๊ฐ๊ฐ ๋‹ค๋ฅธ ํŒจํ„ด์„ ๋ณด์ผ ๊ฒƒ์œผ๋กœ ๊ฐ€์„ค์„ ์„ธ์šฐ๊ณ  ๋ถ„์„์„ ์‹ค์‹œํ•˜์˜€๋‹ค.

์ผ๋ฐ˜์ ์œผ๋กœ ์ถฉ์ „์†Œ ์‚ฌ์šฉ์‹ค์ ์€ ๊ณ ๊ฐ์ข…๋ฅ˜(๊ฐœ์ธ/๋ฏผ๊ฐ„/๊ตญ๊ณต๋ฆฝ)์— ๋”ฐ๋ฅธ ํŒจํ„ด์˜ ์ฐจ์ด๊ฐ€ ํฌ๊ฒŒ ๋‚˜ํƒ€๋‚ฌ๊ณ , ๋ฐฐ์ „์„ ๋กœ ๋ถ€ํ•˜๋Š” ๋‚ ์งœ์ •๋ณด, ์ง€์—ญ(๋„์‹ฌ/์™ธ๊ณฝ)์— ๋”ฐ๋ฅธ ํŒจํ„ด ์ฐจ์ด๊ฐ€ ๋šœ๋ ทํ•˜๊ฒŒ ๋‚˜ํƒ€๋‚ฌ๋‹ค.

ํ‘œ 1. ๋ฐ์ดํ„ฐ ๋ถ„๋ฅ˜๊ธฐ์ค€์— ๋”ฐ๋ฅธ ํŒจํ„ด ๋น„๊ต

Table 1. Pattern comparison by data classifier

๋ถ„๋ฅ˜๊ธฐ์ค€

ํŒจํ„ด์ฐจ์ด(โ–ฒ: high, โ–ฝ: low)

์ถฉ์ „์‹ค์  ๋ฐ์ดํ„ฐ

๋ฐฐ์ „์„ ๋กœ ๋ถ€ํ•˜๋ฐ์ดํ„ฐ

๊ณ„ ์ ˆ

โ–ฝ

โ–ฒ

๊ณตํœด์ผ/๊ทผ๋ฌด์ผ

โ–ฝ

โ–ฒ

๊ฐœ์ธ/๋ฏผ๊ฐ„/๊ตญ๊ณต๋ฆฝ

โ–ฒ

-

๋„์‹ฌ/์™ธ๊ณฝ

โ–ฝ

โ–ฒ

์„ธ๋ถ€์ ์œผ๋กœ ์‚ดํŽด๋ณด๋ฉด ๋ฏผ๊ฐ„, ๊ตญ๊ณต๋ฆฝ ๊ณ ๊ฐ์˜ ์ถฉ์ „์‹ค์ ๊ณผ ๋„์‹ฌ์ง€์— ์œ„์น˜ํ•œ ๋ฐฐ์ „์„ ๋กœ์˜ ์ตœ๋Œ€/์ตœ์†Œ๊ฐ’ ๋ฐœ์ƒ์‹œ์ ์ด ์œ ์‚ฌํ•˜๊ฒŒ ๋‚˜ํƒ€๋‚ฌ๋‹ค.(์ตœ์†Œ๊ฐ’ ์˜ค์ „ 5~6์‹œ๊ฒฝ, ์ตœ๋Œ€๊ฐ’ ์˜คํ›„ 20์‹œ๊ฒฝ) ์ดํ›„์— ์ƒ๊ด€๋„ ๋ถ„์„๊ธฐ๋ฒ•์„ ์‚ฌ์šฉํ•˜์—ฌ ์ƒ์„ธํ•˜๊ฒŒ ์‚ดํŽด๋ณด๊ฒ ์ง€๋งŒ ์ง€๊ธˆ๊นŒ์ง€์˜ ๊ฒฐ๊ณผ๋งŒ์œผ๋กœ ๋ฏผ๊ฐ„, ๊ตญ๊ณต๋ฆฝ ๊ณ ๊ฐ์˜ ์ถฉ์ „์†Œ ๋น„์ค‘์ด ๋†’์œผ๋ฉฐ, ๋„์‹ฌ์ง€์—ญ์— ์œ„์น˜ํ•œ ์„ ๋กœ๊ฐ€ ์ตœ๋Œ€๋ถ€ํ•˜ ํ˜•์„ฑ์— ํฐ ์˜ํ–ฅ์„ ๋ฐ›์„ ๊ฒƒ์œผ๋กœ ์˜ˆ์ƒํ•  ์ˆ˜ ์žˆ๋‹ค.

2.3 ์ƒ๊ด€๋„ ๋ถ„์„

๋ณธ ์žฅ์—์„œ๋Š” ์‹œ๊ฐ„๋Œ€๋ณ„ ํ‰๊ท  ์ถฉ์ „์†Œ ์‚ฌ์šฉ์‹ค์ ๊ณผ ๋ฐฐ์ „์„ ๋กœ ๋ถ€ํ•˜ ๊ฐ„์˜ ์ƒ๊ณผ๋„ ๋ถ„์„์„ ์‹ค์‹œํ•œ ๊ฒฐ๊ณผ๋ฅผ ์ •๋ฆฌํ•˜์˜€๋‹ค. ์ œ์ฃผ์ง€์—ญ์—๋Š” 150์—ฌ๊ฐœ์˜ ๋ฐฐ์ „์„ ๋กœ๊ฐ€ ์„ค์น˜, ์šด์˜ ์ค‘์ด๋‹ค. ์ด ์ค‘์—์„œ ์ง€์—ญ์  ๋Œ€ํ‘œ์„ฑ์„ ๋„๊ณ , ์ถฉ์ „์†Œ ์—ฐ๊ณ„๋Ÿ‰์ด ํฐ ์„ ๋กœ๋ฅผ ์„ ๋ณ„ํ•˜์˜€๋‹ค. ์—ฐ๊ณ„๋œ ์ถฉ์ „์†Œ์˜ ์ˆ˜, ์„ค์น˜์ง€์—ญ, AMI ์„ค์น˜์—ฌ๋ถ€ ๋“ฑ์„ ๊ฒ€ํ† ํ•˜์—ฌ ๋ถ„์„ ๋Œ€์ƒ์œผ๋กœ ์‹ ์—„, ์—ฐ๋ฏธ, ํ˜„๋Œ€, ํ•œ์„œ, ์ข…๋‹ฌ ์„ ๋กœ๋ฅผ ์„ ์ •ํ•˜์˜€๋‹ค. ๋ถ„์„ ๋Œ€์ƒ ์„ ๋กœ์˜ ์ง€๋„์ƒ ์œ„์น˜์™€ ์ถฉ์ „์†Œ ์ „๋ ฅ์ „๋ ฅ ํ•ฉ๊ณ„๋Š” ๊ทธ๋ฆผ 11๊ณผ ๊ฐ™๋‹ค.

๊ทธ๋ฆผ. 11. ๋ถ„์„ ๋Œ€์ƒ ์„ ๋กœ์˜ ์ง€๋„์ƒ ์œ„์น˜์™€ ์ถฉ์ „์†Œ ๊ณ„์•ฝ์ „๋ ฅ์˜ ํ•ฉ๊ณ„

Fig. 11. The location on the map of analysis line and sum of the contracted power of the charging station in the analysis line

../../Resources/kiee/KIEEP.2020.69.2.135/fig11.png

์ƒ๊ด€๋„ ๋ถ„์„์€ ์ง๊ด€์ ์ธ ์ดํ•ด๋ฅผ ๋•๊ธฐ ์œ„ํ•œ ์‹œ๊ฐํ™”์™€ ํฌ๊ธฐ ๋น„๊ต๋ฅผ ์œ„ํ•œ ๊ณ„๋Ÿ‰ํ™”๋ฅผ ๋™์‹œ์— ์‹ค์‹œํ•˜์˜€๋‹ค. ์‹œ๊ณ„์—ด ๋ฐ์ดํ„ฐ์˜ ์ƒ๊ด€๋„๋ฅผ ๊ณ„๋Ÿ‰ํ™” ํ•˜๋Š” ๊ธฐ๋ฒ•์—๋Š” ํ”ผ์–ด์Šจ ์ƒ๊ด€๋„(Pearson Corre- lation), Time Lagged Cross Correlation(TLCC), Dynamic Time Warping(DTW) ๋“ฑ์ด ์žˆ๋‹ค. ์ด ์ค‘์—์„œ TLCC์™€ DTW๋Š” ๋‘ ์‹ ํ˜ธ๊ฐ„์˜ ์„ ํ–‰-ํ›„ํ–‰ ์—ฌ๋ถ€๋‚˜ ํŒจํ„ด ํ˜•ํƒœ์˜ ์œ ์‚ฌ์„ฑ๋ฅผ ํŒŒ์•…ํ•˜๋Š”๋ฐ ์œ ์šฉํ•˜๋‹ค. ๋ณธ ๋…ผ๋ฌธ์—์„œ๋Š” ์ถฉ์ „์‹ค์ ๊ณผ ๋ฐฐ์ „์„ ๋กœ ๋ถ€ํ•˜ ์ตœ๋Œ€๊ฐ’์ด ํ˜•์„ฑ๋˜๋Š” ์‹œ์ ์— ๊ด€์‹ฌ์ด ์žˆ๋‹ค. ๋”ฐ๋ผ์„œ ์ง๊ด€์ ์ด๊ณ  ์ „์ฒด์ ์ธ ๊ด€์ ์˜ ์ƒ๊ด€์„ฑ์„ ๋‚˜ํƒ€๋‚ด๋Š” ํ”ผ์–ด์Šจ ์ƒ๊ด€๋„๋ฅผ ์‚ฌ์šฉํ•˜์—ฌ ๋ถ„์„์„ ์‹ค์‹œํ•˜์˜€๋‹ค.

2.3.1 ์‹ ์—„ ์„ ๋กœ(์ „์ฒด ์ƒ๊ด€๋„ 0.862)

์‹ ์—„ ์„ ๋กœ๋Š” ์ œ์ฃผ๋ถ๋ถ€ ๋„์‹ฌ์— ์œ„์น˜ํ•˜๊ณ  ์žˆ์œผ๋ฉฐ, ์•ž์— ์†Œ๊ฐœํ•œ ๋„์‹ฌ์ง€์—ญ์˜ ํŒจํ„ด๊ณผ ์œ ์‚ฌํ•œ ํ˜•ํƒœ๋ฅผ ๋ณด์ด๊ณ  ์žˆ๋‹ค. ์„ ๋กœ์— ์—ฐ๊ณ„๋œ ์ถฉ์ „์‹ค์ ์„ ๊ณ ๊ฐ์ข…๋ฅ˜๋ณ„๋กœ ๋ถ„๋ฅ˜ํ•˜์—ฌ ์‚ดํŽด๋ณด๋ฉด ๋ฏผ๊ฐ„๊ณ ๊ฐ์˜ ์‹ค์ ๊ณผ ์„ ๋กœ๋ถ€ํ•˜์˜ ํŒจํ„ด์ด ์œ ์‚ฌํ•จ์„ ํ™•์ธํ•  ์ˆ˜ ์žˆ๋‹ค. ์ด๋Š” ๊ทธ๋ฆผ 12์šฐ์ธก์˜ ์‹œ๊ฐํ™” ๊ฒฐ๊ณผ์—์„œ ํ™•์ธ ํ•  ์ˆ˜ ์žˆ๊ณ , ์ขŒ์ธก ์•„๋ž˜์˜ ํ”ผ์–ด์Šจ ์ƒ๊ด€๋„ ๊ณ„์‚ฐ ๊ฒฐ๊ณผ๋ฅผ ํ†ตํ•ด์„œ๋„ ํ™•์ธ๋œ๋‹ค.(0.86) ์‹ ์—„์„ ๋กœ ๋ถ„์„์— ์‚ฌ์šฉ๋œ ์ถฉ์ „์†Œ์˜ ๋Œ€๋‹ค์ˆ˜๋Š” ๋ฏผ๊ฐ„ ๊ณ ๊ฐ์— ์†ํ•˜๋Š” ๊ฒƒ๋“ค์ด๋‹ค. ๋”ฐ๋ผ์„œ ์ „์ฒด ์ถฉ์ „์‹ค์ ๊ณผ ๋ถ€ํ•˜ ํŒจํ„ด์„ ๋น„๊ตํ•˜๋ฉด, ๋ฏผ๊ฐ„ ๊ณ ๊ฐ์— ์˜ํ•œ ์˜ํ–ฅ์ด ์ง€๋ฐฐ์ ์ด์–ด์„œ ์ƒ๊ด€๋„๊ฐ€ ๋†’๊ฒŒ ๊ณ„์‚ฐ๋œ๋‹ค.(0.862)

๊ทธ๋ฆผ. 12. ์‹ ์—„์„ ๋กœ ์—ฐ๊ณ„ ์ถฉ์ „์†Œ ์‹ค์  ๋ฐ ๋ถ€ํ•˜ํŒจํ„ด ๋ถ„์„

Fig. 12. Charging station performance and load pattern analysis of Sinum-line

../../Resources/kiee/KIEEP.2020.69.2.135/fig12.png

2.3.2 ์—ฐ๋ฏธ ์„ ๋กœ(์ „์ฒด ์ƒ๊ด€๋„ 0.902)

์—ฐ๋ฏธ ์„ ๋กœ ๋˜ํ•œ ์ œ์ฃผ๋ถ๋ถ€ ๋„์‹ฌ์— ์œ„์น˜ํ•˜๊ณ  ์žˆ์œผ๋ฉฐ ๋ถ€ํ•˜ํŒจํ„ด๋„ ๋„์‹ฌ์ง€์—ญ์˜ ์ผ๋ฐ˜ ํ˜•ํƒœ์™€ ์œ ์‚ฌํ•˜๋‹ค. ์ด ์„ ๋กœ์— ์—ฐ๊ณ„๋œ ์ถฉ์ „์†Œ์˜ ์‚ฌ์šฉ์‹ค์ ์€ ๋Œ€๋ถ€๋ถ„ ๊ตญ๊ณต๋ฆฝ์—์„œ ๋ฐœ์ƒํ•œ ๊ฒƒ์ด๋ฉฐ ์ „์ฒด ์‹ค์ ์—๋„ ์˜ํ–ฅ์ด ์ง€๋ฐฐ์ ์œผ๋กœ ๋‚˜ํƒ€๋‚œ๋‹ค. ๊ตญ๊ณต๋ฆฝ ๊ณ ๊ฐ์˜ ์‚ฌ์šฉ์‹ค์ ๋„ ๋ฏผ๊ฐ„ ๊ณ ๊ฐ์˜ ์˜ˆ์™€ ๋งˆ์ฐฌ๊ฐ€์ง€๋กœ ๋ถ€ํ•˜ํŒจํ„ด๊ณผ ์œ ์‚ฌํ•˜๋ฏ€๋กœ ์ „์ฒด ์ƒ๊ด€๋„๊ฐ€ ๋†’๊ฒŒ ๋‚˜ํƒ€๋‚œ๋‹ค.(0.902)

๊ทธ๋ฆผ. 13. ์—ฐ๋ฏธ์„ ๋กœ ์—ฐ๊ณ„ ์ถฉ์ „์†Œ ์‹ค์  ๋ฐ ๋ถ€ํ•˜ํŒจํ„ด ๋ถ„์„

Fig. 13. Charging station performance and load pattern analysis of Yeonmi-line

../../Resources/kiee/KIEEP.2020.69.2.135/fig13.png

๊ทธ๋ฆผ. 14. ํ˜„๋Œ€์„ ๋กœ ์—ฐ๊ณ„ ์ถฉ์ „์†Œ ์‹ค์  ๋ฐ ๋ถ€ํ•˜ํŒจํ„ด ๋ถ„์„

Fig. 14. Charging station performance and load pattern analysis of Hyundai-line

../../Resources/kiee/KIEEP.2020.69.2.135/fig14.png

2.3.3 ํ˜„๋Œ€ ์„ ๋กœ(์ „์ฒด ์ƒ๊ด€๋„ -0.214)

ํ˜„๋Œ€ ์„ ๋กœ๋Š” ์ œ์ฃผ๊ณตํ•ญ ์ธ๊ทผ์— ์œ„์น˜ํ•˜๊ณ  ์žˆ๊ณ  ์ƒ์—…์‹œ์„ค ๋ฐ ํŠน์ˆ˜๋ชฉ์  ๋‹จ์ง€ ๋“ฑ ์ด ๋ฐ€์ง‘ํ•ด ์žˆ์œผ๋ฉฐ, ์ „ํ˜•์ ์ธ ๋„์‹ฌ์ง€์—ญ์˜ ๋ถ€ํ•˜ํŒจํ„ด๊ณผ ์•ฝ๊ฐ„์˜ ์ฐจ์ด๊ฐ€ ์žˆ๋‹ค. ์˜ค์ „ 5์‹œ๋ถ€ํ„ฐ 10์‹œ ์‚ฌ์ด์— ๋ถ€ํ•˜๊ฐ€ ๊ธ‰๊ฒฉํ•˜๊ฒŒ ์ฆ๊ฐ€ํ•˜์—ฌ ์•ฝ 10์‹œ๊ฐ„ ๋™์•ˆ 5MW ์ด์ƒ์˜ ๊ณ ๋ถ€ํ•˜๋ฅผ ํ˜•์„ฑํ•œ๋‹ค. ํ˜„๋Œ€ ์„ ๋กœ์˜ ๊ฒฝ์šฐ ์•ž์˜ ์‹ ์—„, ์—ฐ๋ฏธ์˜ ์‚ฌ๋ก€์™€ ๋‹ฌ๋ฆฌ ๊ฐœ์ธ ๊ณ ๊ฐ์ด ๋น„์ค‘์ด ๋†’์•„์„œ ์ „์ฒด ์ƒ๊ด€๋„๋ฅผ ๊ณ„์‚ฐํ•˜๋ฉด ๋‚ฎ๊ฒŒ ๋‚˜ํƒ€๋‚œ๋‹ค.(-0.214)

2.3.4 ํ•œ์„œ ์„ ๋กœ(์ „์ฒด ์ƒ๊ด€๋„ 0.546)

ํ•œ์„œ ์„ ๋กœ๋Š” ์ œ์ฃผ ๋‚จ๋ถ€ ์„œ๊ท€ํฌ์‹œ ์™ธ๊ณฝ์— ์œ„์น˜ํ•˜๊ณ  ์žˆ๋‹ค. ๋ณธ ์—ฐ๊ตฌ์˜ ๊ณ ๊ฐ๋ฐ์ดํ„ฐ ๋ถ„์„์„ ํ†ตํ•ด์„œ ์™ธ๊ณฝ์ง€์—ญ์œผ๋กœ ๋ถ„๋ฅ˜๋˜์—ˆ์œผ๋ฉฐ ๋ถ€ํ•˜ ํ˜•ํƒœ๋„ ์ผ๋ฐ˜์ ์ธ ์™ธ๊ณฝ์ง€์—ญ์˜ ํŒจํ„ด๊ณผ ์œ ์‚ฌํ•˜๋‹ค. ํƒœ์–‘๊ด‘๊ณผ ๊ฐ™์€ ์‹ ์žฌ์ƒ๋ฐœ์ „์˜ ์˜ํ–ฅ์ผ ๊ฒƒ์œผ๋กœ ์ถ”์ •๋˜๋Š” ์ •์˜ค ์‹œ๊ฐ„๋Œ€์˜ ๋ถ€ํ•˜ ๊ฐ์†Œ ๊ฒฝํ–ฅ์ด ๋šœ๋ ทํ•˜๊ฒŒ ๋‚˜ํƒ€๋‚œ๋‹ค. ์ด ์„ ๋กœ์— ์—ฐ๊ณ„๋œ ์ถฉ์ „์†Œ๋Š” ๋ฏผ๊ฐ„ ๊ณ ๊ฐ์ด ๋‹ค์ˆ˜ ํฌํ•จ๋˜์–ด ์žˆ๋‹ค. ํ•˜์ง€๋งŒ ๋ถ€ํ•˜ ํŒจํ„ด์ด ์™ธ๊ณฝ์ง€์—ญ์˜ ํŒจํ„ด์„ ๋„๊ณ  ์žˆ์–ด์„œ ๋‘ ๋ฐ์ดํ„ฐ ๊ฐ„์˜ ์ƒ๊ด€๋„๋Š” ๋†’์ง€ ์•Š์€ ํŽธ์ด๋‹ค.(0.546)

๊ทธ๋ฆผ. 15. ํ•œ์„œ์„ ๋กœ ์—ฐ๊ณ„ ์ถฉ์ „์†Œ ์‹ค์  ๋ฐ ๋ถ€ํ•˜ํŒจํ„ด ๋ถ„์„

Fig. 15. Charging station performance and load pattern analysis of Hanseo-line

../../Resources/kiee/KIEEP.2020.69.2.135/fig15.png

2.3.5 ์ข…๋‹ฌ ์„ ๋กœ(์ „์ฒด ์ƒ๊ด€๋„ 0.374)

์ข…๋‹ฌ ์„ ๋กœ๋Š” ์ œ์ฃผ ๋™๋ถ€ ์™ธ๊ณฝ์— ์œ„์น˜ํ•˜๊ณ  ์žˆ์œผ๋ฉฐ, ํŒจํ„ด ๋˜ํ•œ ์ „ํ˜•์ ์ธ ์™ธ๊ณฝ์ง€์—ญ์˜ ๋ถ€ํ•˜ ํ˜•ํƒœ์ด๋‹ค. ์ด ์ง€์—ญ์— ์ง‘๊ณ„๋œ ์ถฉ์ „์†Œ ์‚ฌ์šฉ์‹ค์  ๋ฐ์ดํ„ฐ๊ฐ€ ๋ถ€์กฑํ•˜์—ฌ ํŒจํ„ด์ด ๋šœ๋ ทํ•˜๊ฒŒ ๋‚˜ํƒ€๋‚˜๊ณ  ์žˆ์ง€๋Š” ์•Š๋‹ค. ์ ์€ ์ถฉ์ „์‹ค์ ์ด์ง€๋งŒ ๊ฐœ์ธ ๊ณ ๊ฐ์˜ ๋น„์ค‘์ด ํฌ๋ฉฐ ๋ฐ์ดํ„ฐ ๊ฐ„ ์ƒ๊ด€๋„๋Š” ๋‚ฎ์€ ํŽธ์ด๋‹ค.(0.374)

๊ทธ๋ฆผ. 16. ์ข…๋‹ฌ์„ ๋กœ ์—ฐ๊ณ„ ์ถฉ์ „์†Œ ์‹ค์  ๋ฐ ๋ถ€ํ•˜ํŒจํ„ด ๋ถ„์„

Fig. 16. Charging station performance and load pattern analysis of Jongdal-line

../../Resources/kiee/KIEEP.2020.69.2.135/fig16.png

2.3.6 ๋ถ„์„๊ฒฐ๊ณผ ์ •๋ฆฌ

๋ณธ ์ ˆ์—์„œ๋Š” 2.2์ ˆ์—์„œ ํƒ์ƒ‰ ๋ถ„์„ํ•œ ๊ฒฐ๊ณผ๋ฅผ ๋ฐ”ํƒ•์œผ๋กœ ์ถฉ์ „์†Œ ์‚ฌ์šฉ์‹ค์ ๊ณผ ์ถฉ์ „์†Œ์— ์—ฐ๊ณ„๋œ ๋ถ€ํ•˜ ํŒจํ„ด๊ฐ„์˜ ์ƒ๊ด€๋„๋ฅผ ๋ถ„์„ํ•˜์˜€๋‹ค. ์ด๋ฅผ ์œ„ํ•ด ๋Œ€ํ‘œ์„ฑ์„ ๋ณด์ผ ๊ฒƒ์œผ๋กœ ์˜ˆ์ƒ๋˜๋Š” ๋ถ„์„๋Œ€์ƒ ํ›„๋ณด ์„ ๋กœ๋ฅผ ์„ ์ •ํ•˜์˜€๊ณ , ๊ฐ ์„ ๋กœ๋ณ„ ์‹œ๊ฐํ™” ๊ธฐ๋ฒ•๊ณผ ๊ณ„๋Ÿ‰ํ™”๋ฅผ ํ†ตํ•ด ๋ถ„์„์„ ์‹ค์‹œํ•˜์˜€๋‹ค.

ํ‘œ 2. ์„ ๋กœ๋ณ„ ์—ฐ๊ณ„ ์ถฉ์ „์†Œ ํŠน์ง• ๋ฐ ์ƒ๊ด€๋„ ๊ณ„์‚ฐ ๊ฒฐ๊ณผ

Table 2. Features of Charging Stations and result of correlation calculation by lines

์„ ๋กœ๋ช…

์„ค์น˜์ง€์—ญ

๊ณ ๊ฐ์ข…๋ฅ˜๋ณ„ ๋น„์ค‘(์ƒ, ์ค‘, ํ•˜)

์ƒ๊ด€๋„ ๊ณ„์ˆ˜

๊ฐœ์ธ

๋ฏผ๊ฐ„

๊ตญ๊ณต๋ฆฝ

์‹  ์—„

๋„ ์‹ฌ

ํ•˜

์ƒ

ร—

0.862

์—ฐ ๋ฏธ

๋„ ์‹ฌ

ํ•˜

ํ•˜

์ƒ

0.902

ํ˜„ ๋Œ€

๋„ ์‹ฌ

์ƒ

ํ•˜

ร—

-0.214

ํ•œ ์„œ

์™ธ ๊ณฝ

์ค‘

์ค‘

ร—

0.546

์ข… ๋‹ฌ

์™ธ ๊ณฝ

์ƒ

ํ•˜

ํ•˜

0.374

์ „ ์ฒด

์ค€๋„์‹ฌ ํŒจํ„ด

์ƒ

ํ•˜

ํ•˜

0.397

ํ‘œ 2๋Š” ์„ ๋กœ๋ณ„ ์ถฉ์ „์†Œ ํŠน์ง•๊ณผ ์ƒ๊ด€๋„ ๊ณ„์‚ฐ ๊ฒฐ๊ณผ ์š”์•ฝ์ž๋ฃŒ์ด๋‹ค. 2.2.4์ ˆ์—์„œ ์˜ˆ์ƒํ•œ ๋ฐ”์™€ ๊ฐ™์ด ๋„์‹ฌ์ง€์—ญ์— ์œ„์น˜ํ•œ ๋ฐฐ์ „์„ ๋กœ์— ๋ฏผ๊ฐ„์ด๋‚˜ ๊ตญ๊ณต๋ฆฝ ๊ณ ๊ฐ์˜ ์ถฉ์ „๋น„์ค‘์ด ๋†’์€ ๊ฒฝ์šฐ ์ƒ๊ด€๋„๊ฐ€ ๋†’๊ฒŒ ๋‚˜ํƒ€๋‚ฌ๋‹ค. ๋ฐฐ์ „์„ ๋กœ๊ฐ€ ๋„์‹ฌ์ง€์—ญ์— ์œ„์น˜ํ•˜๋”๋ผ๋„ ๊ฐœ์ธ๊ณ ๊ฐ์˜ ๋น„์ค‘์ด ๋†’์œผ๋ฉด ์ƒ๊ด€๋„๊ฐ€ ๋†’์ง€ ์•Š์•˜๋‹ค. ํ•˜์ง€๋งŒ ์ด๋Ÿฌํ•œ ์ƒ๊ด€๋„์˜ ํฌ๊ธฐ ๋น„๊ต๋Š” ๋™์ผํ•œ ์ถฉ์ „ ๋น„์ค‘์„ ๊ธฐ์ค€์œผ๋กœ ๋ถ€ํ•˜ ๋ณ€ํ™”์— ๋ฏธ์น˜๋Š” ์˜ํ–ฅ์ด ๋†’์„ ๊ฐ€๋Šฅ์„ฑ์„ ๋œปํ•˜๋Š” ๊ฒƒ์ด๋‹ค. ์ƒ๊ด€๋„๊ฐ€ ๋‚ฎ๋”๋ผ๋„ ์‹œ๊ฐ„๋Œ€๋ณ„ ์ถฉ์ „์ „๋ ฅ์ด ํฌ๋‹ค๋ฉด ์„ ๋กœ ๋ถ€ํ•˜์— ๋ฏธ์น˜๋Š” ์˜ํ–ฅ์ด ๋” ํด ์ˆ˜ ์žˆ๋‹ค. ๋ถ„์„์— ์‚ฌ์šฉ๋œ ์ถฉ์ „์†Œ ์‚ฌ์šฉ์‹ค์ ๊ณผ ๋ถ€ํ•˜๋ฐ์ดํ„ฐ ์ „์ฒด๋ฅผ ๋Œ€์ƒ์œผ๋กœ ์ƒ๊ด€๋„ ๋ถ„์„์„ ์‹ค์‹œํ•˜๋ฉด, ์ถฉ์ „์‹ค์ ์€ ๊ฐœ์ธ๊ณ ๊ฐ์˜ ๋น„์ค‘์ด ๋†’๊ฒŒ ๋‚˜ํƒ€๋‚˜๋ฉฐ ์„ ๋กœ๋ถ€ํ•˜๋Š” ๋„์‹ฌ๊ณผ ์™ธ๊ณฝ์ง€์—ญ ํŒจํ„ด์˜ ์ค‘๊ฐ„ ํ˜•ํƒœ๋ฅผ ๋„๋Š” ๊ฒƒ์œผ๋กœ ํ™•์ธ๋˜์—ˆ๋‹ค.(์ƒ๊ด€๋„ 0.397)

3. ๊ฒฐ ๋ก 

์ œ์ฃผ๋„๋Š” ์ •๋ถ€์˜ โ€˜์žฌ์ƒ์—๋„ˆ์ง€ 3020 ์ดํ–‰๊ณ„ํšโ€™๊ณผ โ€˜2030 ์—๋„ˆ์ง€ ์‹ ์‚ฐ์—… ํ™•์‚ฐ ์ „๋žตโ€™์„ ์ ๊ทน์ ์œผ๋กœ ์ถ”์ง„ํ•˜๊ณ  ์žˆ๋Š” ์ง€์—ญ์ด๋‹ค(2). ์‹ ์žฌ์ƒ๋ฐœ์ „์˜ ๋น„์ค‘์ด ์œก์ง€๊ณ„ํ†ต์— ๋น„ํ•ด ๋†’๊ณ , ์ „๊ธฐ์ฐจ ๋ณด๊ธ‰๋„ ํ™œ๋ฐœํ•˜๊ฒŒ ์ง„ํ–‰ํ•˜๊ณ  ์žˆ๋‹ค. ์ด๋กœ ์ธํ•ด ๊ณผ๊ฑฐ์—๋Š” ํ™•์ธํ•  ์ˆ˜ ์—†์—ˆ๋˜ ๊ณ„ํ†ต์— ๋Œ€ํ•œ ์˜ํ–ฅ์ด ๋ฐœ์ƒํ•  ์ˆ˜๋„ ์žˆ์Œ์„ ๋ฐฐ์ œํ•  ์ˆ˜๊ฐ€ ์—†๋‹ค(7). ์‹ค์ œ๋กœ 2018๋…„๋„์— ์ œ์ฃผ์ง€์—ญ ์ „์ฒด ์ „๋ ฅ์‚ฌ์šฉ๋Ÿ‰์˜ ํฐ ๋ณ€ํ™”๋Š” ์—†๋Š” ๋ฐ˜๋ฉด, 30๊ฐœ ๋ฐฐ์ „ ์„ ๋กœ์—์„œ ์ˆœ๊ฐ„ ์ตœ๋Œ€ ๋ถ€ํ•˜ 10MW๋ฅผ ์ดˆ๊ณผํ•˜๋Š” ์ƒํ™ฉ์ด ๋ฐœ์ƒํ–ˆ๋‹ค(3).

์ „๊ธฐ์ฐจ ๋ณด๊ธ‰ ํ™•๋Œ€๋กœ ์ธํ•œ ์ถฉ์ „์ธํ”„๋ผ ์‚ฌ์šฉ์ด ์ฆ๊ฐ€ํ•˜๋ฉด ๊ณ„ํ†ต์— ๋Œ€ํ•œ ์˜ํ–ฅ์€ ๋” ์ปค์งˆ ๊ฒƒ์œผ๋กœ ์˜ˆ์ƒ๋œ๋‹ค. ํ•˜์ง€๋งŒ ์ด์— ๋Œ€ํ•œ ์˜ํ–ฅ๋„ ๋ถ„์„ ์—ฐ๊ตฌ๋Š” ์ƒ๋Œ€์ ์œผ๋กœ ๋ถ€์กฑํ•œ ์‹ค์ •์ด๋‹ค(1)(5)(8). ๊ทธ๋ฆฌ๊ณ  ์ด ์—ฐ๊ตฌ๋“ค๋„ ๋Œ€๋ถ€๋ถ„ ์‹œ๋ฎฌ๋ ˆ์ด์…˜ ๊ธฐ๋ฐ˜ ๋ถ„์„์— ์˜์กดํ•˜๊ณ  ์žˆ์œผ๋ฉฐ, ์‹ค์ œ ๋ฐ์ดํ„ฐ๋ฅผ ํ™œ์šฉํ•œ ์—ฐ๊ตฌ๋Š” ๋ฏธํกํ•˜๋‹ค.

๋ณธ ๋…ผ๋ฌธ์€ ์ œ์ฃผ์ง€์—ญ์— ์‹ค์ œ๋กœ ์„ค์น˜๋œ ์ถฉ์ „์†Œ์˜ ๊ณ ๊ฐ์ •๋ณด์™€ AMI ์‹ค์  ๋ฐ์ดํ„ฐ๋ฅผ ๋ฐ”ํƒ•์œผ๋กœ ์„ ๋กœ ๋ถ€ํ•˜์— ๋Œ€ํ•œ ์˜ํ–ฅ ๋ถ„์„์„ ์‹ค์‹œํ•˜์˜€๋‹ค. ๊ณ ๊ฐ์ •๋ณด๋ฅผ ์‚ฌ์šฉํ•˜์—ฌ ํŒจํ„ดํ˜•์„ฑ์— ์˜ํ–ฅ์„ ๋ฏธ์น  ๊ฒƒ์œผ๋กœ ์˜ˆ์ƒ๋˜๋Š” ์ธ์ž๋ฅผ ๋„์ถœํ•˜์˜€๊ณ , ์šด์˜์‹œ์Šคํ…œ์—์„œ ์ถ”์ถœํ•œ ์ถฉ์ „์‹ค์  ๋ฐ์ดํ„ฐ์™€ ์„ ๋กœ๋ถ€ํ•˜ ๋ฐ์ดํ„ฐ๋ฅผ ๋ฐ”ํƒ•์œผ๋กœ ํŒจํ„ด ๋ถ„์„์„ ์‹ค์‹œํ•˜์˜€๋‹ค. ๊ทธ๋ฆฌ๊ณ  ์‹œ๊ฐํ™” ๊ธฐ๋ฒ•๊ณผ ์ƒ๊ด€๋„ ๊ณ„์‚ฐ์„ ํ†ตํ•ด์„œ ์ถฉ์ „์†Œ ํŠน์ • ๊ณ ๊ฐ(๋ฏผ๊ฐ„, ๊ตญ๊ณต๋ฆฝ)๊ณผ ๋ฐฐ์ „์„ ๋กœ ์„ค์น˜์ง€์—ญ(๋„์‹ฌ)์— ์˜ํ•ด ๋‘ ๋ฐ์ดํ„ฐ์˜ ํŒจํ„ด์ด ์œ ์‚ฌํ•˜๊ฒŒ ๋‚˜ํƒ€๋‚  ์ˆ˜ ์žˆ์Œ์„ ํ™•์ธํ•˜์˜€๋‹ค.

๋‹ค๋งŒ ๋ณธ ๋…ผ๋ฌธ์—๋Š” ๋‹ค์Œ๊ณผ ๊ฐ™์€ ํ•œ๊ณ„๊ฐ€ ์žˆ๋‹ค. ํ˜„์žฌ ํ•œ์ „์€ ์ œ์ฃผ์ง€์—ญ ์ถฉ์ „์†Œ ์ „์ฒด๋ฅผ ๋Œ€์ƒ์œผ๋กœ AMI ๊ตฌ์ถ•์„ ์ง„ํ–‰ ์ค‘์ด๋‹ค. ๋”ฐ๋ผ์„œ ๋ณธ ๋…ผ๋ฌธ์˜ ์‹ค์ ๋ฐ์ดํ„ฐ ๋ถ„์„์€ AMI ์„ค์น˜๊ฐ€ ์™„๋ฃŒ๋œ ์ผ๋ถ€ ๊ณ ๊ฐ์„ ๋Œ€์ƒ์œผ๋กœ ์‹ค์‹œํ•˜์˜€์œผ๋ฉฐ, ๊ณ„์•ฝ์ „๋ ฅ์ด ํฐ ๊ณ ๊ฐ, ๋ฏผ๊ฐ„/๊ตญ๊ณต๋ฆฝ ๊ณ ๊ฐ ๋‹ค์ˆ˜๊ฐ€ ๋ถ„์„์—์„œ ์ œ์™ธ ๋˜์—ˆ๋‹ค. ๋”ฐ๋ผ์„œ AMI ์„ค์น˜๊ฐ€ ๋Œ€๋‹ค์ˆ˜๋กœ ํ™•๋Œ€๋œ ์ดํ›„, ๋ณธ ๋…ผ๋ฌธ์—์„œ ์‚ฌ์šฉํ•œ ๋ถ„์„๊ธฐ๋ฒ•๊ณผ ๋ถ„๋ฅ˜๊ธฐ๋ฒ•์€ ํ™•๋Œ€๋œ ๋ฐ์ดํ„ฐ๋ฅผ ๊ธฐ๋ฐ˜์œผ๋กœ ์ ์šฉํ•œ๋‹ค๋ฉด ํ™•์ •์ ์ธ ๊ฒฐ๊ณผ๋ฅผ ํ™•๋ณดํ•  ์ˆ˜ ์žˆ๋‹ค. ์ฆ‰, ๋‚ด๋ฅ™์ง€์—ญ์œผ๋กœ ๋ฒ”์œ„๋ฅผ ํ™•๋Œ€ํ•˜์—ฌ ๋ถ„์„ํ•œ๋‹ค๋ฉด, ์„ค์น˜์ง€์—ญ๊ตฌ๋ถ„, ๊ณ ๊ฐ์œ ํ˜•์— ๋”ฐ๋ฅธ ์ƒ๊ด€์„ฑ, ์„ ๋กœ ์˜ํ–ฅ ๋“ฑ ๋ณธ ๋…ผ๋ฌธ์˜ ๋ถ„์„๊ฒฐ๊ณผ๋ฅผ ๋ช…ํ™•ํ•˜๊ฒŒ ์žฌํ™•์ธ ๊ฐ€๋Šฅํ•  ๊ฒƒ์„ ๊ธฐ๋Œ€ํ•œ๋‹ค. ์ด๋Š” AMI ํ™•๋Œ€์— ๋”ฐ๋ฅธ ํ›„์† ์—ฐ๊ตฌ๊ณผ์ œ๋กœ ์ˆ˜ํ–‰ ์˜ˆ์ •์ด๋‹ค.

์ตœ๊ทผ ์ „๋ ฅ ๋น…๋ฐ์ดํ„ฐ ๊ธฐ์ˆ ์˜ ์ค‘์‹ฌ์€ BTM(Behind The Meter)์œผ๋กœ ์ด๋™ํ•˜๊ณ  ์žˆ๋‹ค. ์ด ์ค‘์—์„œ AMI์—์„œ ํ™•๋ณด๋œ ์ •๋ณด๋ฅผ ํ™œ์šฉํ•œ ์‹œ๊ณ„์—ด ๋ฐ์ดํ„ฐ ๋ถ„์„์€ ํ•ต์‹ฌ์ด ๋˜๋Š” ๊ธฐ์ˆ ์ด๋ฉฐ ํ–ฅํ›„์—๋„ ๋‹ค์–‘ํ•œ ๋ถ„์•ผ์— ํ™œ์šฉ๋  ๊ฒƒ์œผ๋กœ ์˜ˆ์ƒ๋œ๋‹ค. ๋ณธ ๋…ผ๋ฌธ์€ ํ•œ์ „์˜ ์ถฉ์ „์†Œ AMI ๋ฐ์ดํ„ฐ๋ฅผ ์‚ฌ์šฉํ•˜์—ฌ ๊ณ„ํ†ต์˜ํ–ฅ์„ ๋ถ„์„ํ•œ ์ฒซ ๋ฒˆ์งธ ์‚ฌ๋ก€์ด๋‹ค. ๋ณธ ๋…ผ๋ฌธ์„ ์‹œ์ž‘์œผ๋กœ ๋ถ„์‚ฐ์ „์› ์ค‘์‹ฌ, ์žฌ์ƒ์—๋„ˆ์ง€ 3020์‹œ๋Œ€์— ๋Œ€๋น„ํ•œ ์ฒด๊ณ„์ ์ธ ์ „๋ ฅ์„ค๋น„ ๊ด€๋ฆฌ์— ๊ธฐ์—ฌํ•˜๋Š” ์—ฐ๊ตฌ๊ฐ€ ์ง€์†๋˜๊ธฐ๋ฅผ ๊ธฐ๋Œ€ํ•œ๋‹ค.

References

1 
Gae Myoung Lee, Aug 2014, Effects of Electric Vehicle Supply on Jeju Electric Power System, Journal of the Electric WorldGoogle Search
2 
Jeju Province, Mar 2018, Comprehensive mid-to-long-term plan to expand electric vehicle supply and foster industryGoogle Search
3 
KEPCO Data Science Lab, Sep 2019, Jeju area electric vehicle char- ging station customer data analysis result reportGoogle Search
4 
Korea Power Exchange, Feb 2019, Annual performance report of Jejuโ€™s electric power system in 2018Google Search
5 
Korea Power Exchange, Aug 2016, A study on the system impact according to the expansion policy of EV/ wind power facilities in JejuGoogle Search
6 
J. Neubauer, M. Simpson, Jan 2015, Deployment of Behind- The-Meter Energy Storage for Demand Charge Reduction, NREL, NREL/TP-5400-63162DOI
7 
Kwang Myung Yu, March 2018, Necessity of ESS for frequency control with the increase of new and renewable power generation, The Korean Institute of Electrical Engineers, Vol. 67, No. 3, pp. 24-29Google Search
8 
Jeju Province, Nov 2015, Establishment of measures to increase and stabilize the capacity limit for accessing power systems in Jeju, Research reportGoogle Search

์ €์ž์†Œ๊ฐœ

ํ•œ์ƒ๊ทœ(Sang-Kyu Han)
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1988๋…„ ๊ณ ๋ ค๋Œ€ํ•™๊ต ์ „๊ธฐ๊ณตํ•™๊ณผ ์กธ์—….

2010๋…„ ํ•€๋ž€๋“œ Helsinki School of Economics ์กธ์—…(๊ณต๊ธฐ์—…๊ฒฝ์˜ํ•™ ์„์‚ฌ).

ํ˜„์žฌ ์—ฐ์„ธ๋Œ€ํ•™๊ต ๊ธฐ์ˆ ์ •์ฑ…ํ˜‘๋™๊ณผ์ •(๋ฐ•์‚ฌ๊ณผ์ •) ์žฌํ•™, ํ•œ๊ตญ์ „๋ ฅ๊ณต์‚ฌ ๊ทผ๋ฌด.

E-mail : sangkyu.han@kepco.co.kr

ํ•œ์ƒ๊ตญ(Sang-Kook Han)
../../Resources/kiee/KIEEP.2020.69.2.135/au2.png

1986๋…„ ์—ฐ์„ธ๋Œ€ํ•™๊ต ์ „๊ธฐ๊ณตํ•™๊ณผ ์กธ์—….

1994๋…„ The University of Florida-Gainesville, Electrical & Computer Engineering(์„๋ฐ•์‚ฌ)

ํ˜„์žฌ ์—ฐ์„ธ๋Œ€ํ•™๊ต ๊ณต๊ณผ๋Œ€ํ•™ ์ „๊ธฐ์ „์ž๊ณตํ•™๋ถ€ ๊ต์ˆ˜, ์—ฐ์„ธ๋Œ€ํ•™๊ต ๊ธฐ์ˆ ์ •์ฑ…ํ˜‘๋™๊ณผ์ • ์ฃผ์ž„๊ต์ˆ˜

E-mail : skhan@yonsei.ac.kr