KEPCO Research Institute 2019.07.10(Wed)

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KEPCO Research Institute MOO SUNG RYU

2019.07.10(Wed)

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Technical Outline 1

Offshore Wind Power In KOREA 2

Research Achievements 3

Future Perspective

4

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3 1. Technical Outline

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(Ref : WINDPOWER PROGRAM)

D

- Max Wind Power(Wind Speed ) : ∝

U_u ³

- Theoretical Power Efficiency(Betz’s Law): C

_p_,max

 0.593

- Wind Speed(or Wind Power density) is Crucial Factor of Offshore Wind Power

,max

turbine p wind

P  C P

2

1

3

2 4

wind u

P   U  D

_U_u

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Business Viability Requirement

- On-land Wind Power : min. Wind Speed is more than 5.4m/s - Offshore Wind Power : Wind Power Class is more than Class 3

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2. Offshore Wind Power In KOREA

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- Technical base : 33.2 GW

- Planned Wind Farm : Approx. 3.3 GW

Sea Area Optimal #1 Optimal #2 합계

West 1.6 2.3 3.9

Jeju & South 3.5 16.8 20.3

East 2.0 4.3 6.3

Total 7.1 23.3 30.4

□ Possible Capacity of Optimal Sites (GW)

※ Optimal Sites : Wind Power Class 3+(West class 2+), istance 10 km+(East/Jeju 1 km+) Water Depth #1 0-20 m(Jeju/East 0-40 m), #2 20-40 m(Jeju/East 40-60 m)

Capacity Density 10 MW/km^2, Optimal Sites #1, #2

<Ref : Renewable Energy White Paper, 2016>

Planned Offshore Wind Farm

- 1,000 2,000

경기/충남 전북 전남 경남/부산 경북 제주

추진 중(MW) 인허가 완료(MW)

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- Step by Step Process Considering domestic Circumstances

◦ ‘19~’25 : Planned Offshore Wind Farm(4.04GW)

◦ ’25~’30 : Large Scale Offshore Wind Farm(13.88GW)

- High Sensitivity of Grid Connection Constraint

- Small Scale Farm< 100 MW - Near Shore, Shallow Water - Existing Grid Connected - Short Term Development

- Medium Scale Farm < 500 MW - Offshore, Medium Water

- Reinforcement of Existing Grid - Mid-Term Development

- GW Scale Farm

- Offshore, Deep Water - HVDC is applied

- Long term Development(’25~) Development Scenario

□ Development Strategy

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3. Research Achievements

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Southwest 2.5GW Offshore Wind Farm (pilot sites)

Feasibility Study

Master Plan for 2.5GW Project 2008

2017

2016 Suction Bucket Installation 2011

Co-location Study Design Basis

Wind Farm Design (Phase I)

CMS/SCADA

Environmental Monitoring Program Consent Process

Offshore Met-Mast

2013

2019 All-in-One Installation Vessel 2014

Planning Phase II(Expansion)

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Offshore Met-Masts

■ Design Basis

- Consideration of Site-specific Characteristics - Localization of Safety Factors

(Typhoon, Geotechnical Conditions, etc.)

■ Layout and HSE Design

■ Planning of 1^stFar and Large Offshore Wind Power Project in KOREA (’08.10 ~ ’11.02 )

 National Roadmap for Development of Southwest 2.5GW Offshore Wind Power

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Suction Tripod

1^st Installation in KOREA (Gunsan)

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Internal Grid Design Grid connection Analysis

Design & Stability Analysis of Grid(Internal & External) Design and Installation of Offshore Substation

Development of Subsea Cable Installation Vehicle

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■ Standard SCADA for Multi-vendor Wind Turbines

- Based on Common Protocols According to IEC 61850 & IEC 61400-25 (IEC 61850 certified by KERI) - Adoption of Effective Power Curve Range Detecting Method

■ Development of CMS [certified by DNV-GL] and Integration to SCADA System - Active-Bin Analysis Based on IEC 61400-25

- Fault Detection and Prediction for Drive-Train

☞ Field Verification : Onshore (Yeong-heung, Yeong-gwang), Offshore (Gunsan, Southwest Testbed)

SCADA CMS S/W CMS H/W CMS certification

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Information System Aquaculture Platform(WT) Artificial Reef

■ - - -

■ Field Verification : Co-location Demonstration Platform in the vicinity of Southwest OWF (2017)

Co-location Concept Site Location

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4. Future Perspective

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□ Foundation Type : Jacket

□ Installation Method : Pile Hammering

□ Construction Time : + 1 month

□ Features : Noise, Vibration, Floating Particles

□ Foundation Type : Suction Bucket

□ Installation Method : Suction Pressure

□ Construction Time: 3 day including Turbine

□ Features : All –In One Installation

No Noise& Vibration, Eco-friendly

SEP : Self Elevating Platform

*MMB : Multi-purpose Mobile Base

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Special Installation Device

for Subsea Cable Ocean Energy Storage System

Offshore Wind Farm Monitoring(Met-ocean data) System

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Floating Substructure for Large Wind Turbine Design of New Type of Floating Structure

?

Mooring & Anchoring Analysis

Turbine - Floating Structure Load Coupling Analysis

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