May 7, Prof. Chul H. Jo. Director-Ocean Energy and Environmental Fusion Research Center, Inha University, South Korea

Transcription

1 May 7, 2015 Prof. Chul H. Jo Director-Ocean Energy and Environmental Fusion Research Center, Inha University, South Korea

2 Introduction 2

3 Global Tidal Energy Resources Tidal Energy Resources : UK, France, North America, Northern Australia, and Korea The blue areas represent the high energy density with high production potential. Korea is surrounded by ocean having abundant ocean energy resources. South Korea <Source : World Energy Council, HIS Emerging Energy Research> 3

4 4 Tidal Current Energy Density <Annual Energy Density> <Maximum Flood> <Maximum Ebb> <Source : Korea Hydrographic and Oceanographic Administration>

5 Barrage and TEC 5

6 Shiwha Barrage Shiwha Barrage Power Plant Capacity : 254MW (25.4KW x 10), Annual capacity : 553 GWh, Tidal range : 7.8m, dike : 11.2km Completed in 2011,

7 TIDAL BARAGE POWER PLANTS IN KOREA Tidal Barage : the Largest(254MW, Shihwa lake, commercial plant) name Shihwa lake Garolim Bay Incheon Bay Chunsoo Bay location Ansan city, Kyoungki province Seosan, Chungnam Province Kanghwa Is. Youngjong Is. Kyoungki Province AnMyun Is. Chungnam Province, length(km) 12.7 ab. 2.0 ab ab. 8.0 stage installed capacity (MW) Commercial operation ( ) by K-water feasibility study, environmental survey feasibility study concept design ab. 950 ab. 720 Year Power (MWh) 552, ,000 1,740,000 1,200,000 max. tide (m) aver. tide (m)

8 8 Domestic TEC Uldolmok-VAT Cooling channel Floating TEC Installed in Uldolmok in 2009/04 Capacity of 1MW Helical turbine-vat type Max. current speed of 5.5m/s 2-bladed HAT type (D=2.4m) Capacity : 25kW (HAT type) Installed in Samcheonpo Power plant in 2008/07 Developed by Ocean Space Inc. and Inha University Installed in Yeosu in blade, D=8m, 100kW TLP(Tension Leg Platform) Developed by Inha University and Ocean Space Inc.

9 9 TCP Farm Projects Incheon - Korea Shinan - Korea Project period : 8 years Capacity : 200MW Budget : 1 Billion USD Project period : 8 years Capacity : 260MW Budget : about 1.2 Billion USD

10 10 Domestic TCP projects Title Capacity Period Status 완도 Wando 신안 Shinan 맹골 Mainggol 인천 Incheon 장죽 Jangjook 대방 Daebang 울돌목 Woldolmog 부유식 Floating 방수로 Cooling weir 300MW ~2015 Planned 260MW ~2016 Pre-feasibility study 250MW ~2018 Planned 200MW ~2015 Pre-feasibility study 200MW ~2016 Planned 100MW 2011~ Pre-feasibility study 1MW 2010 Tested and retrieved 100kW 2011 Tested and retrieved 25kW 2009 Dismounted after test

11 Energy Potential 11

12 Tidal current velocity distribution 12

13 Geographical restriction

14 Preliminary tidal current farm areas 연평도남측해역 영종도서측해역 덕적도 ~ 만리포해역 진도 ~ 맹골도

15 Energy potential definition International definition of energy potential Theoretical Technical Economic : three layer pyramid structure 3 category : IRENA, ERENE 4 category : IEA, NREL, Bonn Univ., Norway Bellona Foundation 5 category : REN21, DLR Korean definition of energy potential- 4 categories Theoretical potential : Total natural energy in the region Geographical potential : Energy potential disregarding restricted areas Technical potential : Extracted energy using present technology Market potential : Economical energy potential with energy demand, standard market price, compensation rate, etc. 15

16 Dividing regions Dividing regions Division is based on tidal current chart in nautical publications. The coastal line was divided into 6 regions. Region 3 and 5 were further subdivided. Region 1 No. Velocity (cm/s) Power density (W/m 2 ) API (MW/km 2 )

17 Procedure of resource assessment Procedure of resource assessment Literature study and existing survey data collection along the coastline Determination of the survey areas. Ocean survey : echo sound, side scan sonar, multi-beam sonar, bottom profiler, ADCP, wave, etc. Modelling of areas of interest based on ocean survey data Investigation of restricted areas; ship channel, military zone, shallow regions, archeological areas, preserved areas, fishing zone, etc. Estimation of theoretical energy potential Geographical energy potential considering restricted areas Determination of TCP device type, efficiency, energy loss, power rate, etc. Technical energy potential calculation Conducting the financial feasibility study Market energy potential 17

18 Theoretical potential assessment Definition of theoretical potential in tidal current power Total natural tidal current energy in the region without any restriction. Assumptions for calculation of theoretical potential The boundary of the study is limited within EEZ. API method is used in the potential estimation. The average flow velocity in mid depth is assumed as 95% of surface average velocity. 18

19 Theoretical potential assessment Estimation method for theoretical potential API (Averaged Power Intercepted) : theoretically extractable energy potential per unit area API = PD A swept A occupied (PD 1 2 ρu3, A swept Area of tidal turbine, A occupied Occupied area per a device) Theoretical potential assessment is based on the Averaged API calculated from velocity distribution and the area. Evaluation method for theoretical potential Tidal current energy is evaluated as IGC[GW], AEP[TWh/y] and TOE[1000toe/y]. Installed generating capacity (IGC) : Maximum output of generators in a farm IGC = API A 103 (API averaged API, A areaof the region) Annual Energy Production (AEP): annually generated energy from IGC AEP = IGC k u 10 5 k u 이용률, 100% Tonne of Oil Equivalent (TOE) : the amount of energy released by burning one ton of crude oil TOE = AEP 106 f (f Energy conversion factor) 19

20 Geographical restriction Geographically restricted areas in Korea Preserved coastal area Military zone Ship channel Artificial reef zone and fishing zone Minimum water depth limitation Subsea cable and pipeline routes Archeologically designated area 20

21 Geographical restriction Preserved coastal area The area being outstanding natural scenery Habitat for wild animals and plants, or arrival place for migratory birds The area that its ecosystem needs to be preserved, such as estuaries, low and swampy places, etc. Clean sea area which contains plentiful maritime resources The area designated as preservation area by the related laws or plans, such as Natural Environment Preservation Area, Cultural Property Protection Area, and Natural Ecosystem Preservation Area, etc. Other Areas that local government acknowledges the need of absolute preservation. 21

22 Geographical restriction Military zone Restricted zone : shooting ranges and training grounds, areas within one kilometer radius from the outermost boundary line of the relevant military base or drill zone. Ship channel Exclusion of ship channel Assuming ship channel of 300m wide Artificial reef zone and fishing zone Artificial reef area Fishing zones Should have more than 1km buffer zone. Minimum water depth limitation Minimum installation water depth of 5m Subsea cable and pipeline Buffer zone of 1km 22

23 Geographical potential assessment Definition of Geographical potential in tidal current power Energy potential disregarding the restricted area Evaluation method for geographical potential Installed generating capacity (IGC) IGC = API A g 10 3 (A g Area excluding the geographically restricted areas) Annual Energy Production (AEP) AEP = IGC k u 10 5 k u Utilizable factor, 100% 23

24 Technical potential assessment Definition of technical potential Extracted energy by present technology considering turbine efficiency, generating efficiency, operation rate, start up velocity, etc. Assumptions for calculation of technical potential Minimum start up velocity of 0.7m/s Operation rate of 30% System efficiency of 35% Evaluation method for technical potential Installed generating capacity (IGC) IGC = API A t 10 3 η A t Area excluding the minimum start up velocity η Tidal current system efficiency, 35% Annual Energy Production (AEP) AEP = IGC k u 10 5 k u Operation rate, 35% 24

25 Tidal energy potential in Korea Potential Area [km 2 ] IGC [GW] AEP [TWh/y] TOE [1000toe/y] Theoretical 82,478 1, ,156 1,131,253 Geographical 36, , ,178 Technical 17, ,611 Installed generating capacity (IGC) : Maximum output of generators in the area Annual Energy Production (AEP): annually generated energy from IGC Tonne of Oil Equivalent (TOE) : the amount of energy released by burning one ton of crude oil 25

26 Incheon City-Ocean Energy MECA Plan 26

27 Incheon Ocean Energy MECA Project

28 Relationship with UK MOU between IMC and EMEC in 2012 MOU between IMC and Scotland in 2013

29 Closing remarks

30 Closing Remarks FIT => RPS policy change from 2014 Tidal current W.F. = 2.0 (SMP+2xREC) = 440won/kwh = 0.4USD/kwh Abundant tidal energy density along west and south coastal regions Active local governments (Incheon and Shinan) Several TCP farm projects launched in Korea Closer collaborations between two countries (industry and academy) Joint projects for the application and implementation of tidal current power technologies

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