Goldwind is leveraging its expertise in wind turbines to develop microgrid solutions using renewable energy sources like wind and solar, along with energy storage technologies. It has installed microgrids at industrial parks and desalination plants in China. One microgrid uses a 2.5MW wind turbine, solar PV, batteries, and a diesel generator connected to an energy management system. Another site doubled its desalination capacity by expanding its microgrid with a 2.5MW wind turbine and batteries. Goldwind aims to continue installing more advanced microgrid systems using its control technologies.

1. Goldwind Microgrid
Case Study
Wind Industry Forum – March 2015
Steven Nethery
Copyright © Goldwind Science & Technology Co., Ltd 1

2. Etechwin Microgrid Solutions
1 Wind Turbine Experience for Microgrids
2 Advanced Microgrid solutions using extension of Goldwind’s expertise
3 Case Study - Goldwind / Etechwin installing more microgrids
Copyright © Goldwind Science & Technology Co., Ltd 2

3. 3
Goldwind
2.5MW
Super Capacitors used in
Advanced Pitch System
Full Power Converter
IGBT active control
Park Level Energy
Management Systems
Goldwind are leveraging windfarm experience in Microgrid solutions
is a specialist electronic
company within the Goldwind group

4. Copyright © Goldwind Science & Technology Co., Ltd 4
Component Technology Manufacturer
Generation Wind Turbines
Solar PV Supplier
Micro Gas Turbines Supplier
Diesel Engines Supplier
Storage Super Capacitors
Fixed Battery Supplier
Flow Battery Supplier
Control WTG Converters
Solar PV Inverters
Energy Management System
Converters for other Technology
Goldwind are leveraging windfarm experience in Microgrid solutions

5. Etechwin Microgrid Solutions
1 Wind Turbine Experience for Microgrids
2 Advanced Microgrid solutions using extension of Goldwind’s expertise
3 Case Study - Goldwind / Etechwin installing more microgrids
Copyright © Goldwind Science & Technology Co., Ltd 5

6. Capacity：500kW
1. Polycrystalline silicon 490kW
2. Single crystal silicon 5kW
3. Cadmium telluride thin film 5kW
Type：GW 109/2500kW
Height：80m
Land size：91271.6 m2
Load：200kW – 2200kW
Goldwind Beijing Headquarters
Solar Photovoltaic
Wind Turbine
Vanadium flow: 200kW*4h
Lithium battery: 200kW*4h
Super-capacitor: 200kW*10s
Energy Storage System
Cogen micro gas
turbine: 2 x 65 kW
Micro-gas Turbine
Copyright © Goldwind Science & Technology Co., Ltd
6
Architectural Drawing

7. Demonstration Project of Goldwind Microgrid
Multiple Types of Renewable Energy & Storage
2.5MW Wind Turbine Converter System
500kW PV
Vanadium Redox Batteries
Copyright © Goldwind Science & Technology Co., Ltd 7

8. Goldwind Microgrid Demonstration Project
Prioritising Fuel Sources
Copyright © Goldwind Science & Technology Co., Ltd 8
Grid Supplied Electricity

9. Demonstration Project of Goldwind Microgrid
Copyright © Goldwind Science & Technology Co., Ltd 9
Integrated Solution
Renewable Energy + Storage + Gas Cogeneration
2 x 65kW
Loads

10. Energy Management System + Super Capacitors
Copyright © Goldwind Science & Technology Co., Ltd 10
Power supply and load
system of Goldwind
headquarters
电容
Energy control
system of the
smart microgrid
Photo-
voltaic
Lithium
battery
Micro
gas
turbine
Super-
capacitor
VRFB
Energy control system of the
smart micro grid
 Integrate and maximise the proportion of
renewable energy power generation
 Coordinate island and the grid-connected
operation whilst ensuring the stability of power
supply
 Adaptable control interface able to control
different generation, load and storage technologies
 Flexible configuration allowing customised
system operation and control strategy

11. Energy Management System of Goldwind Microgrid
Copyright © Goldwind Science & Technology Co., Ltd 11
Automated, Real Time, High Speed information monitoring
including power flow, power resources status, power quality
In grid connected mode, EMP will prioritise the lowest cost
energy source.
In off-grid mode, mitigate disturbances and synchronous
oscillation
High Speed event recording
Capability for control of bi-directional power supply
(eg export to and import from the grid)
Support Black Start

12. Energy Management System of Goldwind Microgrid
Copyright © Goldwind Science & Technology Co., Ltd
12
EMS + Super Capacitor mitigates voltage disturbances
0 100 200 300 400 500 600
-400
-300
-200
-100
0
100
200
300
400
0 100 200 300 400 500 600 700 800
-400
-300
-200
-100
0
100
200
300
400
0 100 200 300 400 500 600 700 800
-400
-300
-200
-100
0
100
200
300
400
400 450 500 550 600 650 700
240
260
280
300
320
340
360
With super capacitorVoltage(V)
Voltage(V)
Voltage(V)
Without super capacitor
–––––––– Without EMS + Super Capacitor
–––––––– With EMS + Super Capacitor

13. Energy Management System of Goldwind Microgrid
Copyright © Goldwind Science & Technology Co., Ltd
13
EMS + Super Capacitor mitigates current imbalance
Phase A Phase B
Phase C
–––––––– With EMS + Super Capacitor
–––––––– Without EMS + Super Capacitor

14. Energy Management System of Goldwind Microgrid
Copyright © Goldwind Science & Technology Co., Ltd 14
EMS + Super Capacitor mitigates sub-synchronous oscillation during island mode
0 200 400 600 800 1000 1200 1400 1600 1800 2000
-600
-400
-200
0
200
400
600
周期为0.02s
电压实时值(v)
无超级电容
有超级电容
Phase B
Phase C - RMS
–––––––– With EMS + Super Capacitor
–––––––– Without EMS + Super Capacitor
Phase A

15. Etechwin Microgrid Solutions
1 Wind Turbine Experience for Microgrids
2 Advanced Microgrid solutions using extension of Goldwind’s expertise
3 Case Study - Goldwind / Etechwin installing more microgrids
Copyright © Goldwind Science & Technology Co., Ltd 15

16. 20kV北工线
（国家电网）
20kV
变压器
6300kVA
10kV
预留
2.0MW
变压器
2000kVA
690V
风机进线 产业园
回路
江苏南车
回路
江苏金风
回路
开关站
江苏南车
注：红色范围为项目新建范围
负荷
AC
DC
100kW
光伏
200kW 3小时
铅碳
AC
DC
变压器
500kVA
100kW
690V
400V
改造1：计量改造
改造2：接入改造
10kV
Load
Jiangsu
Goldwind
Circuit
Industrial
Park
Circuit
200kW 3 hrs
Lead Carbon
Batteries
100kW
Solar PV
Goldwind
2.0MW PMDD
Case Study – Jiangsu Nanche Industrial Park
Commissioned in Dec 2014
16Copyright © Goldwind Science & Technology Co., Ltd
Allowed quicker access to power for industrial park
Includes new Goldwind 2.0MW prototype
Huayekeji
100kW

17. Case Study – Dafeng Jiangsu Desalination Plant
Commissioned in May 2014
Goldwind
2.5MW PMDD
Diesel Electric Engine
Batteries
New Desalination Plant
5,000 tonnes / day
Runs isolated from the grid
Microgrid Expansion allowed doubling of capacity
Existing Desalination Plant
5,000 tonnes / day
Expansion

18. Goldwind are leveraging Wind Turbine expertise
• Super Capacitors
• Renewables – Wind & Solar
• Full Power IGBT Converters
• Energy Management Systems
Advanced Microgrid solutions using extension of Goldwind’s expertise.
• Inverter connected systems including storage and generation technologies
• Control of loads, storage, and generation with Energy Management System
Goldwind & are installing more microgrid technology at other sites
Copyright © Goldwind Science & Technology Co., Ltd 18
Goldwind are leveraging Wind Turbine expertise
Copyright © Goldwind Science & Technology Co., Ltd 18

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Questions?