1. Smart Renewable EMS KEPCO KDN 2011. 11. 30
Hello! My name is Nam Cheol Yu.
I am coming from KEPCO-KDN(Korea Electric Power Data Network), the sister company of KEPCO.
My position is manager of Distribution IT R&D department.
My Major Career is to Lead the Development of Power IT Systems such as
· Distribution Automation System
· Transformer Load Monitoring System
· Digital Electricity Meter
· Digital Substation Automation System
I am very pleased here to give a presentation for Smart Renewable EMS.
R&D Department of Distribution Automation System
Manager Nam-cheol, Yu

2. 1. SR-EMS Definition Small-scale Entry SR-EMS Definition
System operating in conjunction with distribution system that has under 100kW low voltage(380V).
Economic and Efficient management system for Small-scale renewable energy sources like PV and Wind power generation.
SR-EMS Development Goal
Economic Efficiency (less than 5% compared to total cost)
SmartGrid TOC linked operation
Scalability applicable to each renewable energy power
User(Business) Management Convenience
Today, I am going to introduce SR-EMS. SR is the abbreviation for Smart Renewable and EMS stands for Energy Management System. I think to understand SR-EMS, you need to know it’s definition.
Let me explain small-scale Entry SR-EMS system. It is a system operating in conjunction with distribution system that has under 100kW low voltage. It uses small-scale renewable energy sources such as PV or Wind Power Generation.
There are several goals for SR-EMS. Economic Efficiency, Smart Grid TOC linked operation, scalability, Convenience are main goal of SR-EMS.

3. 2. SR-EMS Difference Small-scale Entry SR-EMS Product Difference
100kW Small-scale Entry SR System linked with low-voltage system
SME Product Demonstration by interconnecting various kinds of Power devices
Economical and compact system for small-scale renewable energy
Jeju Demonstration Goal
What makes different SR-EMS comparing to other systems. The main point is that it linked with low-voltage system. Also it can interconnect various kinds of Power devices. Lastly it is very economical and compact system.
There is a Demonstration complex in Jeju island for the testing of SR-EMS. In this demonstration we are focusing on small-scale entry business model. Energy storage device and Operation linkage are also a important goal.
Demonstration suitable for small-scale entry business model
Energy storage device for stable Wind power/PV Generation output
Operation linked with 100kW small-scale Renewable Energy Source EMS

4. 3. Commercialization Strategy
『Economic One-package Solution optimized for small-scale Distributed power generation』
Goal
Small-scale PV + Multifunctional PCS + BMS + *VRLA Battery
Small-scale Wind Power + PCS/BMS +
Lithium Polymer Battery + AVC
Efficient Triple junction cell Solar Battery that reformed shortcoming of Conventional silicon cell
Multifunctional PCS Use including Active/Reactive Power control and Power quality compensation function
 Long life VRLA that enables cost savings over 30%
High-performance Lithium Polymer battery for stability of irregular output of Wind power generation
 PCS, BMS hybrid power conditioning device and Battery management system Application
Economic **AVC for Compensation for reactive power of Wind power generation
Strategy
We have several strategies for the commercialization of SR-EMS. To achieve goal, economic one-package solution optimized for small-scale distributed power generation, strategies are divided to two regions according to type of generation. Left one shows strategy for the PV and the right box contains strategy for the wind power.
One more important thing is that to ensure interoperability between systems, precondition such as interoperability standard is to be demonstrated and applied.
Pre
condition
Interoperability
Standard
Ensure interoperability between systems
Standardization through demonstration
* VRLA(Valve Regulated Lead Acid)
** AVC(Automatic VAR Compensator)

5. 4. SR-EMS System Configuration
Total Operation Center (TOC)
Demonstration Test Center
Wind Power Prediction System
EMS
KPX
Smart Renewable Network
KEPCO Low Voltage
System Connection CS RT
3ø 380V AC DC
PCS
S/W
S/W
S/W
Wind Power
100KW
Convertor
S/W
S/W RT
BMS
Reactive Power
Compensation Equipment
Battery
Relay
S/W RT
S/W
Small Hydro Power
60KW
This diagram shows the SR-EMS system configuration.
In the diagram, there is two types of line, red line represents power network and blue line represents communication network.
Power network line show the flow of power from each renewable power plant to S/W and its destination.
There are several RTs attached to PCS, Relay, RT. It transmit information to smart renewable network.
Demonstration Test Center can control entire system through this network. RT
3ø 380V
Multi-PCS
S/W
S/W
PV Power
PCS : Power Conditioning System
BMS : Battery Management System
CS : Control System S/W : Switch
Power Network
Communication Network
100KW
S/W
BMS
Battery

6. 4. SR-EMS System ConfigurationPV
Waterworks, Electricity
D-1 Market Price
PV Power generation Monitoring
Small
Hydro
Power
Planning/
Bid Price
Wind Power generation Monitoring
DNP3.0
SR Demonstration Center
EMS
(KEPCO KDN)
This is also a diagram of SR-EMS system configuration, but this is a different point of view.
Although inner structure of each renewable power system is not equal, the way of transmitting information is same. Monitored information from each renewable power plant are transmitted to EMS of SR Demonstration center. Then it can communicate information such as D-1 market price, Planning/Bid price with the TOC.
Waterworks, Electricity
Wind Power
EMS : Energy Management System
VRLA : Valve Regulated Lead Acid
PCS : Power Conditioning System
BMS : Battery Management System

7. 5. SR-EMS Key Features(Screen Configuration)
Home Page/Login Main Page
FIRST DEPTH
System status
Event Management
Power Trading
System Connection
System Management
Power Source
Management
SECOND DEPTH
Prediction/
Unit Cost
Operator
Management
Main Screen
Measurement
TOC Configuration PV
TOC Connection
Information
Control
Bid Management
Power Plant
Equipment
Wind Power
Successful Bid
Management
Alarm Event
Communication
Small Hydro Power
This diagram shows the screen configuration of SR-EMS.
After login to the home page, you can see the main page containing first depth such as system status, event management, Power Trading, System connection, System Management, Power source management.
Each menu of first depth contains several functions.
Power Trading
Accurate account
System Log
Analysis
User Log

8. 5. SR-EMS Key Features(Screen Configuration)
Comprehensive Management Screen
This picture shows comprehensive management screen.

9. 5. SR-EMS Key Features(Screen Configuration)
PV Power Management Screen
This picture shows PV power management screen.

10. 5. SR-EMS Key Features(Screen Configuration)
Wind Power Management Screen
This picture shows Wind Power Management Screen.

11. 5. SR-EMS Key Features(Screen Configuration)
Small Hydropower Management Screen
This picture shows small hydropower management screen.

12. 6. Jeju Demonstration System(Configuration)
Demonstration system and Configuration
Section
Capacity
Company
Completion date
EMS
Small-scale EMS
Control 1000 Pt
Kepco KDN
’11.4 Construction
Generation
Source
PV power
100kW
Waterworks
Electricity
‘10.9 Completion
Wind power
‘11.3 Completion
Small Hydropower
60kW
KOSPO
‘10.10 Completion

13. 7. Business Model
Target Market : Islands/rural region and Small area distributed generation
<Case: Renewable complex power system at Chuja Island>
In spite of high installation cost, cost and CO2 reduction by the complement of the Wind Power generation is possible.
Section
System configuration
Cost($/KWh)
Renewable Energy Rate
CO2 Emissions
Diesel Power
250KW Diesel Power
0.335 0%
1,047
Analysis Ⅰ
5 Wind Power 50kW
200kW BATT
100kW Inverter
0.278
49%
673
Analysis Ⅱ
10kW PV
600kW BATT
150kW Inverter
0.284
52%
593
Finally, business model for SR-EMS is to be explained.
Its first target market will be islands/rural region and small area distributed generation.
This mean is very nice Power Generation system for SKA Project.
We can see the successful case of renewable complex power system at Chuja island Iin my contry. In spite of high installation cost, cost & CO2 reduction by the complement of the wind power generation was possible.
Lower table shows the cost and CO2 emissions according to system configuration. In this table we can see that reduction of both cost & CO2 emissions as increasing renewable energy rate. 13

14. 7. Business Model(Continued)
Target Market : Overseas Small Interconnection/Stand-alone Renewable Energy
United States
Emerging Market for Small city/farm/public institution
- Government support for wind power installation that is under 100KW
- Provide installation cost 30% or under 4,000$ tax benefit
Developing Countries
Major position as Remote place Electrification Business by independent distributed renewable energy source
Increasing energy demand by rapid economic growth countries like China, India, Brazil
- Renewable energy independent power system to supply energy
- Dynamic promotion both securing resources and Development of Renewable energy
Unique alternative Under situation like High oil prices, Greenhouse gas emission reduction pressure
Second target market can be overseas small interconnection/stand-alone renewable energy.
Overseas market can be divided to two part, United State and developing countries.
In the US, we are focusing on emerging market for small city/farm/public institution.
In the developing countries, we are try to keep major position as remote place electrification business by independent distributed renewable energy source.
Also this system is used to SKA Project.

15. Korea was selected as a leader in Smart Grid technology at
8. Conclusion
Strength of Korea Electricity
Korea Electricity Industry
One of the biggest energy-consuming countries in the World
Relatively new power infrastructure & Superior ability of operation
“World Best” power qualities
- Outage hour in Korea : Just 14.29min/year (France : 57min/year, UK : 68min/year, USA 122min/year)
Loss rate of transmission/distribution in Korea : about 4%
(UK : 9%, USA: 7%, JAPAN : 5%)
Korea was selected as a leader in Smart Grid technology at
2009 G8 Summit!
Power IT Infra : Young and already SMART
Related IT Convergence Industry
“World Best” of Korea IT infra  “IT KOREA”
Broadband internet deployment ratio : World’s #1(95.9%, OECD 2009)
Builds the world’s first nationwide Smart Grid system currently
Jeju Smart Grid Test-bed : World’s largest Smart Grid community
“World Best” smart home appliance, automobile, EV, construction, and shipbuilding

16. 8. Conclusion Power System Design (PV 100Kw) for SKA. EMS SW STATCOM,
TOC SW
STATCOM,
AVC
Power Grid
PV(100Kw)
PCS
BMS
Load
Bank
Battery

17. Thank you ! ync@kdn.com 010-3444-2001
This is the end of the presentation.
I hope you understand about SR-EMS.
If there is a question, please feel free to ask.