Energy Storage System

Energy Storage System LSIS Co., Ltd. 01

Contents 04 06 08 10 11 12 14 15 16 18 Overview - EnGather Product Applications Total Solution by Application Energy Storage System PMS Modular Scalable Technology Modular Scalable PCS Specification of Modular Scalable PCS Quality Control System Track Record LS group is a leader of key industries and the 14th largest group in Korea. No. of executives/employees: approx. 13,000 No. of affiliates: 45 companies Revenue: 19 billion USD Operating profits: 652 million USD Total assets: 18.9 billion USD (as of 2016; excluding assets of overseas affiliates) 02 LSIS Co., Ltd.

Energy Storage System Leading company and total solution provider in the field of electric power systems and automation solutions. LSIS, the leader of Korea s electric power industry, provides smart convergence solutions with ICT and DC technologies. Energy Storage System () A system improves the quality of the energy supply by storing energy and supplying stored energy in required situations such as lowering power rates or responding to blackout Smart Building Energy Management System (BEMS) A green building system that maximizes energy consumption efficiency by collecting and analyzing the energy consumption information of a building One-Stop Solution For Photovoltaic Power Generation The first one-stop solution in Korea that can be installed in any space including saltpans and water surfaces with the components required for photovoltaic systems (e.g. photovoltaic cells and installation system) Energy Management System (EMS) A system designed to optimally control the operation of power generation systems and manage the power supply Smart campus MG system A system that supplies stable high-quality power to campuses, and manages energy adequate for properties of buildings through energy analysis and consumption prediction Smart Factory Energy Management System (FEMS) A green factory system for maximizing energy consumption efficiency by collecting and analyzing production line energy consumption information in real time Smart Home Energy Management System (HEMS) A system designed for easy monitoring and management of household energy consumption at home at anytime from anywhere LSIS Co., Ltd. 03

Overview - EnGather LSIS technology supports the entire power system from power generation to transmission, transformation, distribution as well as customers. Electric Power System (EMS, SCADA) EMS / PMS LSIS Capability Power Conversion Technology (Drive, Inverter, Static inverter, HVDC) Power Device (Distribution panel, Circuit Breaker, Transformer) PCS Switchgear Components EPC Experience Battery Based on advanced power solution technologies that maximize efficiency and stability of power supply, LSIS has provided a wide range of electric equipment & systems covering both low voltage and ultra-high voltage capacities. Combining its expertise in power and automation, LSIS has developed an advanced energy story system 04 LSIS Co., Ltd.

Energy Storage System Why LSIS? Building on 40 years of core technologies for the power sector and power electronics in automation, LSIS has installed energy storage systems () for different applications, equipping itself with key capabilities in. Its diverse experiences from development of PCS to implementation of turnkey solutions and EPC has allowed efficiency and stable operation of the systems with added customer values. LSIS is committed to driving smart energy by offering optimal solutions for customers, implementing projects utilizing advanced technology and providing one-stop service with thorough quality control. Track Record Domestic 182MW, Overseas 18MW 200MW Diverse Applications Frequency Regulation, Distribution, Grid Connection of Renewables, Peak Shaving, Emergency Generation, MG, BSS 7 Applications 40 years of Experience R&D Capabilities in Smart Grid Power and Automation LSIS Co., Ltd. 05

Product Applications Power Generation, Power Transmission and Transformation GIS SWGR HVDC / FACTS Power Transformer PV for Renewable Energy VCB MCCB Wind for Frequency Regulation for Distribution Distribution Transformer ACB 40ft container Power station Expected Benefits by Application Renewable Energy Frequency Regulation Distribution Smoothing Renewable energy sources are unpredictable and the availability of renewable energy is not constant, all of which may undermine quality of the grid system. When connected with, quality electricity can be supplied to the grid system in a stable manner. Frequency Regulation A gap between power generation and demand on the grid causes the grid frequency to move away from its nominal value, and this can be regulated using to improve quality of electricity. Deploying can also maximize utilization of coal-fired power plants to reduce power cost. P, Q Control for Distribution Network As renewable energy is being widely adopted, the existing distribution network will reach its full capacity, requiring investment for capacity expansion. Installing for P/Q control can have same effect of increasing capacity without new capacity installation. Output(kW) Output(kW) Output(kW) Regular PV Power Sale PV Power Sale PV Power Sale PV Power Sale PV Power Sale PV Power Sale Frequency 10AM 10AM 10AM 4PM 4PM 4PM Charging Charging Charging Frequency(kHz) Frequency(kHz) Frequency(kHz) Regular Frequency Distribution Line Capacity +peak Frequency Recovery Frequency Recovery Frequency Recovery Regular Frequency 0 Fault Fault Fault -peak Distribution Line Capacity 0 +peak -peak Distribution Line Capacity Increasing Capacity EffectIncreasing Capacity Effect Increasing Effect Capacity +peak Charging Charging Charging 0 Existing Distribution Line Capacity Existing Distribution Line Capacity Output(kW) Existing Distribution Line Capacity -peak Output(kW) Output(kW) 06 LSIS Co., Ltd. 태양광매전 충 / 방전 태양광매전 충 / 방전 태양광매전 충 / 방전

Energy Storage System End Users Microgrid for End Users Engineering, Industrial facilities, etc. Solar Power Buildings, Apartments, Commercial facilities, etc. for End Users Wind Power ISLAND Transformer (step-up) for End Users Household PEBB 250W 500W 1MW 2MW Commercial Industrial Microgrid Load Leveling of use electricity pricing has three different pricing for light load, heavy load and maximum load. Electricity is charged during hours of light load and discharged during maximum load to reduce energy charge on your bill. Back-up Power In case of blackout, supplies electricity enabling swift response to emergencies. Peak Shaving When electricity usage goes beyond what is contracted, electricity will be supplied by to prevent demand charge on your bill from going up. Grid-Tied/ Stand-Alone A microgrid is a discrete energy system consisting of diesel power generation, renewable energy,, etc. and loads capable of operating in parallel with, or independently from, the main power grid. helps stabilize the grid system through power smoothing control as well as voltage and frequency regulation. harging Load Load Frequency(kHz) Load Balancing Load Balancing Regular PV Power Sale Frequency 4PM Pricing at Maximum Pricing Loadat Maximum Load Fault Load Load Load Frequency Recovery Distribution Load Line Capacity Peak Shaving +peak Peak Shaving 0 Reduced Energy Charge -peak Reduced Energy Charge Charging Capacity Increasing Effect Existing Distribution Line Capacity Output(kW) Wind Wind + Load Load Balancing P e 태양광매전 충 / 방전 LSIS Co., Ltd. 07

Total Solution by Application for Photovoltaic Power Generation is installed in photovoltaic power plants and is charged with power generated during set period of time (10AM to 4PM). Power discharged at other times of the day is eligible for REC weight to generate revenue. Policy Benefits Photovoltaic Photovoltaic + Power Generation Profit = Power Generation Amount Power Sale Unit Price Equipment Capacity SMP+REC Operation *SMP (System Marginal Price) : Power unit price sold to KEPCO (average monthly unit price applied) *REC Weight : May change depending on the government policy PV Power Sale 10AM Charging Photovoltaic Power Generation Peak 4PM PV Power Sale Electricity Charge Average Unit Price KRW 111.57 per kwh (Korea Electric Power Statistics 2016) * Average SMP(Inland): KRW 81.39/kWh (2017) Selling Price of Photovoltaic Power Generation with (Example) PV Power Sale per kwh = SMP + (REC Contract Unit Price x Weight) = Unit Price PV Power Sale of Roof Type = KRW 80 + (KRW 110 x 1.5) = KRW 245 PV Power Sale of Photovoltaic Power Generation with = KRW 80 + (KRW 110 x 5.0) = KRW 630 System Configuration Power Sale at other than the Charging Meter (Power Generation) Charging (Power Sale) Meter (Power Receiving) (At other than the Photovoltaic Power Generation ) Meter (Charging/ ) High Voltage Board Transformer PMS BMS Photovoltaic Power Generation Low Voltage Board PCS BATTERY 08 LSIS Co., Ltd.

Energy Storage System Commercial/ Industrial Special electricity charge discount programs running until 2020 for customers using will allow customers to enjoy more benefits. Customer s usage pattern is analyzed to size up the most optimal system configuration with savings estimation. Various Power Sale at other than the Charging operational modes of PMS, the monitoring and control system of, also enhances system usage. Expected Benefits Meter (Power Generation) Meter (Power Receiving) (Power Sale) (At other than the Photovoltaic Power Generation ) Charging Meter (Charging/ ) Demand Charge + Energy Charge High Voltage Board Industrial Electric Charge After installation Demand Charge + + Energy Charge Industrial Electric Charge PMS Additional Benefits BMS Transformer Reduction of Electricity Charge Maximum reduction of standing charge by 1/3 through peak shaving Photovoltaic Power Generation Low Voltage EBoard SS is charged during night time when the price is low and discharged when the PCS BATTERY price is high, and the gap is what you save Additional 50% discount for night-time charging Contribution to the Electric Power Industry Basis Fund (3.7% of electricity charge) is also reduced as much as the bill savings System Configuration Electric Loads Charging Meter High Voltage Board Transformer PMS Low Voltage Board PCS BATTERY BMS LSIS Co., Ltd. 09

Energy Storage System System Configuration analyzes your pattern of electricity demand to estimate optimal /Battery capacity, and the system is designed to suit the local characteristics and usage. System Layout Indoor Configuration : PMS, PCS, Battery, Switchgear 10 LSIS Co., Ltd.

PMS Power Management System Energy Storage System Commercial/ Industrial Integrated monitoring and control system of provide optimal solutions for commercial and industrial end-users. The Operation Center allows convenient and effective operation of with simple clicks of a mouse. Operation Mode Schedule-based Load Leveling Demand-based Peak Shaving Independent Operating Substituting Diesel Generator Main Functions Monitoring and control of PCS, battery and other equipment Analysis of operational effectiveness such as cost saving PMS Operation Screen The energy flow on the grid system is displayed in maptype diagrams to assist intuitive monitoring of operation status. operation is updated on a real-time basis and is presented in graphs with immediate estimation of costs saved. for Distribution Operational algorithms are embedded to prevent excessive load on the distribution network. Operation Mode Active Power Control : Scheduling, Peak Shaving, P Control Reactive Power Control : Voltage Control, Power Main Functions Unmanned operation in the field integrating remotely controlled communication system with upstream systems of the distribution center PMS Operation Screen LSIS Co., Ltd. 11

Modular Scalable Technology 3 Level Topology PEBB The new Modular Scalable PCS is based on 3 Level Topology Power Electronics Building Block (PEBB) and has applied Parallel-Operation Technique up to 16 units. Modular Scalable PCS allows customers to choose capacity from 125kW up to 2.5MW. An newly introduced optimal parallel-operation method not only increases the efficiency but also improves the reliability of an overall system. Efficiency Curve PEBB Capacity Efficiency [%] 98.5 98.0 97.5 97.0 96.5 Efficiency Charging Efficiency Maintaining the efficiency over 98% in the range of 33~100% load condition Charging/ Efficiency Max. Efficiency : 98.3% Max. Charging Efficiency : 98% Round Trip Max. Efficiency : Over 96.4% Rated Efficiency : Over 96.2% Efficiency over 98% 33~100% Load Condition Rated power 125kW (@380V) 158kW (@480V) AC Rated Voltage 380/400/440/480V DC Voltage Range 650~1,200V PEBB size [mm] 250W x 814H x 822D Energy Density 945 [kw/m 3 ] Note Stand-Alone Operation Capability Certified with SGSF Test (SGSF : Smart Grid Standard Forum) 96.0 13 33 100 Load Rate [%] LSIS Smart Operation Mode Load Follow Operation Durable Operation 25% Load 50% Load Determining of PEBBs depending on load conditions In case of 25% Load, only 25% PEBBs are running Running all PEBB during 100% of load In case of 100% load 1 st Run 2 nd Run Selecting the PEBBs to run depending on the accumulated power processed by each PEBB Increasing the longevity of the overall system 100% Load 3 rd Run : Run : Stop : Fault 12 LSIS Co., Ltd.

Energy Storage System 2MW (@380V) / 2.5MW (@480V) 1MW 500kW 250kW Modular Scalable PCS Up to 16 units of modular PEBB can be connected in parallel to optimize PCS power output (in case of 2MW PCS). PCS Capacity - 2 units of PEBB : 250kW - 4 units of PEBB : 500kW - 8 units of PEBB : 1MW - 16 units of PEBB : 2MW(@380V) - 16 units of PEBB : 2.5MW(@480V) AC Voltage 380V 400V 440V 480V PEBB Capacity 125kW 131kW 145kW 158kW Sustainable Operation Efficiency Optimized Operation PEBB Normal Operation PEBB Fault When PEBB failure occurs, the PCS system can continue to operate by excluding the malfunctioned PEBB Minimizing the off time of the overall system by partial operation during the fault Simple and quick replacement of a malfunctioned PEBB for maintenance 99.0% 98.5% 98.0% 97.5% 97.0% 96.5% 96.0% Efficiency 2000kW 1000kW 500kW 250kW 125kW Power 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% Low efficiency in low load conditions due to general characteristics of inverters Maintaining each PEBB at the optimized level of output by changing the number of running PEBBs Improving the overall system Efficiency LSIS Co., Ltd. 13

Modular Scalable PCS PCS Model Name LSEP - 2000 G 2 - E O 1 T - KR LSIS Energy Storage System PCS PCS Capacity 0100 : 100kW 0250 : 250kW 0500 : 500kW 1000 : 1MW 2000 : 2MW PEBB Capacity 1 : 1MW Power Stack 2 : 125kW PEBB Enclosure I : Indoor O : Outdoor Transformer Blank : None T : Transformer Built-In Country KR US EU Grid-tied (Type of Grid-Tied ) Type of DC Connection D : DC Circuit Breaker E : DC Switch Disconnecter/Fuse Indoor Type PCS AC Rated Voltage 1 : 380V 2 : 400V 3 : 440V 4 : 480V 5 : 690V 6 : 380/440V 250kW 500kW 1MW 2MW Recommended Battery Modular Scalable PCS is compatible with batteries of different applications with DC voltage range of 650V to 1200V. Modular Scalable PCS Energy/Medium (1C ) PCS DC Voltage Range (1MW, 2MW) PCS DC Voltage Range (100kW, 250kW, 500kW) Company S/R901/91kWh Company S/R084/84kWh Company L/R1000/111or166kWh Company K/2R6C/133kWh Company K/2R5C/111kWh 700 650 845 774 714 768 640 832 1200 1000 1096 1004 1000 1100 Company S/R075/75kWh 818 1082 Power (1C ) Company L/R070/70kWh Company L/R1000/92 or 128kWh Company K/H-3R4C/133kWh 750 714 720 992 1000 1100 Company K/H-2R5C/111kWh 650 830 300 600 900 1200 1500 14 LSIS Co., Ltd.

Specification of Modular Scalable PCS Energy Storage System PCS Capacity 250kW 500kW 1MW 2MW Model Name LSEP-0250G2-DI6-KR LSEP-0500G2-DI6-KR LSEP-1000G2-DI3-KR LSEP-2000G2-DI3-KR Type of Grid Connection 3 Phase 3 Wire DC Voltage Range (V) 650 ~ 1,000 (@380V) 700 ~ 1,000 (@440V) 650 ~ 1,000 (@380V) 700 ~ 1,000 (@440V) 700 ~ 1,200 700 ~ 1,200 DC Max. DC Current (A) 400 790 1,460 2,920 DC Disconnection Method Circuit Breaker Circuit Breaker Disconnected Switch + Fuse Disconnected Switch + Fuse Rated Power (kva) 250 500 1,000 2,000 Rated Voltage (V) 380/ 440 380/ 440 440 440 AC Nominal AC Voltage Range (%) Nominal Current (A) -12%, 10% -12%, 10% -12%, 10% -12%, 10% 388 (@380V) 335 (@440V) 775 (@380V) 669 (@440V) 1,339 2,678 Max. AC Current (A) 440 880 1,530 3,050 AC Frequency (Hz) 60 Max. Total Harmonic Distortion Total < 3%, Individual < 1.5% Efficiency Max. Efficiency > 98%, Round Trip > 95% Dimensions (WDH, mm) 1,330 x 880 x 2,205 2,030 x 880 x 2,205 2,630 x 880 x 2,205 3,830 x 880 x 2,205 Enclosure Weight (ton, Packing Excluded) Cooling System 0.9 1.7 2.6 4.2 Forced Air IP IP21 IP21 IP21 IP21 Environment Temperature ( ) -20 ~ 50 Relative Humidity (%) 0 ~ 95 (Non-condensing) User Interface HMI Communication 8.4 inch Touch LCD Modbus TCP, DNP 3.0 (Option) Korean Standard SGSF-025-4 (Ed 2.0:2015-12) Compliance to Standards Safety IEC 62477-1, IEC 62477-2, IEC 62103 EMC EN 61000-6-2, EN 61000-6-4 LSIS Co., Ltd. 15

Quality Control System Major Testing Equipment LSIS has built a systematic research and development process within its R&D headquarters and has a separate reliability center to secure product liablity from the R&D stage. It has also established testing facilities and quality verification process that are most optimal for based on years of experience obtained from a number of projects. Quality control is practiced in a thorough manner from production to final shipping. Rated Circulation Testing Equipment Capacity: 2.5MVA Purpose: Product reliability test for long-hour operation Performance Testing Equipment Capacity: 500kW Constant Temperature and Humidity Chamber Capacity: Enough for housing MW-level PCS Purpose: Ambient temperature and humidity setup Korea s First Testing Agency Accredited by UL for Testing LSIS s Power Testing & Technology Institute (PT&T) is the first international accredited testing institute in the country s private sector. PT&T currently has 2000MVA short-circuit testing equipment, high-voltage testing equipment, and reliability testing equipment. As an international testing and calibration institute certified by KOLAS, PT&T is qualified to carry out quality management and testing for electric equipment and systems. PT&T has established strategic alliances with world-class certification institutes such as US on testing, and now UL testing can be performed domestically. [UL Certificate of Qualification] PT&T became the first Korean testing agency accredited by UL in February 2015. UL certification : UL 9540, UL 1741, IEEE 1547.1 [Power Testing & Technology Institute (PT&T), Cheongju, Korea] 16 LSIS Co., Ltd.

Energy Storage System One-Stop Turn-key Service One-stop service covering consulting, sizing, installation and warranty is available for customers interested in to ensure customer convenience and satisfaction. Consulting Clear Understanding of Needs and Requirements of the Client Budgeting Support Proposal for System Optimization Expected Benefits Explained Licensing Support System Consulting and Turn-key Services Design Design Proposal Design Development Economic Viability Assessment (accurate profitability analysis using calculation and analysis framework) Construction Document Manufacturing & Integration Product Manufacturing and Testing System Manufacturing and Testing Supervision & Installation System Installation Supervision Site Installation Operation & Maintenance Test Operation Maintenance and Repair Technical Support Warranty Swift and Reliable Aftersales Service Warranty Project Management The project team is staffed with Project Managers (PM) with ample amount of project experience. Clearly defined project management processes ensure successful project implementation while PMs are evaluated on project management maturity (PMM) and are trained with professional programs to further enhance project management capabilities. Vendor Management Resource Management Quality Control Project Management Framework Risk Management Schedule Management Communication Management Scope Management Cost Management LSIS Co., Ltd. 17

Track Record Grid Stability KEPCO Shinchungju Substation Shinchungju, Korea Frequency Regulation (Autonomous) 16MW / 6MWh Li-ion Kokam Battery 2016.07 LSIS scope: 16MW PCS, PMS, Engineering and Installation Honam Coal Plant Yeoso, Korea Frequency Regulation (AGC & Autonomous) 4MW / 2MWh Li-ion LG Chem. Battery 2016.04 LSIS scope: 4MW PCS and PMS, Engineering and Installation KEPCO Seoansung Substation Soeansaung, Korea Frequency Regulation (Autonomous) 16MW / 5.4MWh Li-ion Kokam Battery 2015.07 LSIS scope: 16MW PCS and PMS, Engineering and Installation KEPCO Ulsan Substation Ulsan, Korea Frequency Regulation (Autonomous) 32MW / 12MWh Li-ion Samsung SDI Battery 2017.07 LSIS scope: 32MW PCS and PMS, Engineering and Installation KEPCO Distribution Project Nep island, Wando-gun, Korea P, Q Control for Distribution Network 3MW / 6MWh Li-ion Samsung SDI Battery 2017.08 LSIS scope: 3MW PCS and PMS, Engineering and Installation KEPRI Demonstration & Distribution Project Jeongeup-si, Korea P, Q Control for Distribution Network 250kW / 500kWh Li-ion Kokam Battery 8sets 2017.07 LSIS scope: 250kW PCS and PMS Track Record (Overseas Projects) Chesapeake College State of Maryland, USA Frequency Regulation (AGC) 1 MW / 720 kwh Samsung SDI Battery 2017.08 LSIS scope: 1MW PCS, Switchgear, Engineering and Installation Shin-Chitose Kashiwadai Hokkaido, Japan Photovoltaic Power Generation with 17MW / 13.7MWh Samsung SDI Battery 2017.09 LSIS scope: EPC, O&M (PV and ) 18 LSIS Co., Ltd.

Energy Storage System Commercial & Industrial LSIS R&D Anyang Campus Anyang, Korea Peak Shaving, Load Leveling & Back-up Power 1MW / 1MWh LG Chem. Battery 2015.03 LSIS scope: 1MW PCS and PMS, Engineering and Installation Samsung SDI CheonAn Factory CheonAn, Korea Peak Shaving & Load Leveling 2.5MW / 7MWh Samsung SDI Battery 2014.08 LSIS scope: 2.5MW PCS and PMS, Engineering and Installation Samsung SDI Ulsan Factory Ulsan, Korea Peak Shaving & Load Leveling 2MW / 4MWh Samsung SDI Battery 2014.08 LSIS scope: 2MW PCS and PMS, Engineering and Installation Renewable Integration Busan Hwamyeong Purification Plant Hwamyeong, Busan, Korea Photovoltaic Power Generation with 2017.12 Photovoltaic 997kW / 1MW / 3MWh Samsung SDI Battery LSIS scope: PV 1MW (Module, PCU)/ 1MW (PCS, PMS) EPC, O&M LSIS Busan Factory Hwajeon-dong, Busan, Korea Photovoltaic Power Generation with 2018.01 Photovoltaic 911kW / 1MW / 2.7MWh Samsung SDI Battery LSIS scope: PV 1MW (Module, PCU)/ 1MW (PCS, PMS) EPC, O&M LSIS Cheongju Factory Cheongju, Korea Photovoltaic Power Generation with 2015.06 1MW / 1MWh Samsung SDI Battery LSIS scope: 1MW PCS and PMS, Engineering and Installation Daemyung GEC Youngam, Korea Wind Power Smoothing 4MW/14MWh Samsung SDI Battery 2016.01 LSIS scope: 4MW PCS, EMS, Switchgear, Engineering and Installation KOSPO Jeju Island Jeju Island, Korea Wind Power Smoothing 2MW / 8MWh Samsung SDI Battery 2015.11 LSIS scope: 2MW PCS, EMS, Switchgear, Engineering and Installation KEPRI Bigeum Island Bigeum Island, Korea Wind Power Smoothing, Power Quality 500kW / 250kWh LG Chem Battery 2014.06 LSIS scope: 500kW PCS, 1MVA STATCOM and EMS, Engineering and Installation LSIS Co., Ltd. 19

Safety Instructions For your safety, please read user's manual thoroughly before operating. Contact the nearest authorized service facility for examination, repair, or adjustment. Please contact qualified service technician when you need maintenance. Do not disassemble or repair by yourself! Any maintenance and inspection shall be performed by the personnel having expertise concerned. Head Office LS Tower, 127, LS-ro, Dongan-gu, Anyang-si, Gyeonggi-do, Korea URL : www.lsis.com Tel : +82-2-2034-4377 E-mail : younsupl@lsis.com 2018. 03 c 2018.03 LSIS Co.,Ltd. All rights reserved. / (01) 2018. 03 Human Power