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Home > Energy Storage Solutions > Energy Storage PCS

Overview

Energy Storage PCS

Full duplex power inverter that allows easy user access to electric power by charging /discharging batteries. ESS offers various benefits. Firstly, It provides profit by using stored power during peak power time and storing power during low usage nights. Secondly, PCS shows a quick response to stabilize frequency regulation of power grid.

  • Product Details
  • ESS Expected Effect
  • Business Result
  • Introduction of EnGather
Product Details
PCS (Power Conditioning System)

MW-level bi-directional inverters for energy storage applications. Excellent dynamic characteristics and stable charging/discharging control between the grid and high energy-density batteries. Integrated power control algorithms.

  Configured with modular inverter stacks for easy maintenance and highly reliability in demanding storage applications (frequency regulation, peak shaving, emergency generator, load shifting, PV and wind smoothing, etc.).


  • - MW-level power control
  • - Bi-directional power conversion
  • - Quick response
  • - High efficiency (97.8% at rated power)
  • - Full 4-quadrant active and reactive power control
  • - Easy maintenance


Specifications
PCS Specification
Type LSEP-1000G1-(US)
DC Input voltage range

750~1,000Vdc

Input rated voltage 850Vdc
Input max. current 1400A
AC Rated power 1MW
Rated voltage 3ø 480Vac
Current output 1,202Arms
Frequency 60Hz
Power quality THD: total<5%, individual<3%
Efficiency max 98%, >96% (at rated power, discharging efficiency)
Standard

IEEE 1547.a, UL 1998, UL 1741

Environment Cooling Method Forced air cooling
Operating Temp. -5°C ~ 40°C
Communication PMS Modbus TCP
External IP Indoor IP20, Outdoor IP54
Product Size 2,510W x 1,130D x 2,020H


HMI (Human Machine Interface) Display
Mounted on the PCS panel. Operator can monitor and control PCS operation via HMI or remotely
- Touch-panel 8.4” color LCD screen
- Real-time monitoring and diagnosis
- Pre-installed operating modes




40ft Container
Up to 4 1MW PCS can be optimally situated in consideration of the heat flow and equipped with internal anti-disaster system (heat and smoke detectors)



ESS Expected Effect
ESS for Customer
  • - Load Leveling : Create profit by using stored power during peak power time and storing power during low usage nights
  • - Peak Cut : Save bottom line fee by securing power through ESS during periods of high power demand 

ESS for Transmission
  • - AGC : Automatic Generation Control : Controls power output of multiple generators, connected to the electronic power system at the power control centers via EMS.
    AGC allows quick response to adjust frequency.
  • - G/F : (Governor free): Automatically responses to frequency changes to varying ESS outputs to allow governor free operation.
     With G/F, the power quality of the system can be maintained
     
ESS for Renewable Energy
  • - Smoothing Control : Increase renewable energy output quality and stabilize power grid 


  • Renewable Energy PMS Operation Screen01 · Smoothing Control
    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 ESS, quality electricity can be supplied to the grid system in a stable manner
  • Frequency Regulation PMS Operation Screen02 · 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 ESS to improve quality of electricity.
    Deploying ESS can also maximize utilization of coal-fired power plants to reduce power cost.


  • Commercial/Industrial/Housing PMS Operation Screen02 PMS Operation Screen01 · Load Leveling
    Time 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, ESS supplies electricity enabling swift response to emergencies.

    · Peak Shaving
    When electricity usage goes beyond what is contracted, electricity will be provided by ESS to prevent demand charge on your bill from going up.

  • Microgrid PMS Operation Screen02 · Grid connection/stand-alone
    A microgrid is a discrete energy system consisting of diesel power generation, renewable energy, ESS, etc. and loads capable of operating in parallel with, or independently from, the main power grid.
    ESS helps stabilize the grid system through power smoothing control as well as voltage and frequency regulation.
  • BSS PMS Operation Screen02 · Battery Swapping Station (BSS)
    BSS is an optimal charging station for automatic battery swapping electric buses. When battery is running out of energy, a robot removes the battery pack from the bus and places on the top of the charging station for charging.
    Bus stops are equipped with charging stations and battery is changed while the bus is stopped at bus stops.

Business Result
LSIS Power Conditioning System (PCS) Operating Experience and Track Record


Summary

• Over 60MW of LSIS PCS equipment in operation. Expected to reach 100MW by the end of 2016
• Supporting over 60MW and 52MWh of battery installations
   - Lithium ion from Samsung SDI, LG Chem and Kokam
   - Vanadium redox flow
• Control systems developed and provided for frequency regulation, commercial & industrial, microgrid and renewable integration
• Wide range of scopes performed from PCS-only to full project design, engineering, integration and installation
 


Grid Stability

KEPCO Shinchungju Substation

• Shinchungju, Korea
• Frequency regulation (autonomous)
• 16MW / 6MWh Li-ion Kokam battery
• Constructed January 2016
• LSIS scope: 16MW PCS and power management system (PMS), engineering and installation




Honam Coal Plant

• Yeoso, Korea
• Frequency regulation (AGC & autonomous)
• 4MW / 2MWh Li-ion LG Chem battery
• Commissioned April 2016
• LSIS scope: 4MW PCS and PMS, engineering and installation




KEPCO Seoansung Substation

• Soeansaung, Korea
• Frequency regulation (autonomous)
• 16MW / 5.4MWh Li-ion Kokam battery
• Commissioned July 2015
• LSIS scope: 16MW PCS and PMS, engineering and installation




Commercial & Industrial

LSIS R&D Anyang Campus

• Anyang, Korea
• Peak shaving, load leveling & back-up power
• 1MW / 1MWh LG Chem battery
• Commissioned March 2015
• LSIS scope: 1MW PCS and PMS, engineering and installation




LSIS Cheongju Factory

• Cheongju, Korea
• Peak shaving, load leveling & solar integration
• 1MW / 1MWh Samsung SDI battery
• Commissioned June 2015
• 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
• Commissioned August 2014
• 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
• Commissioned August 2014
• LSIS scope: 2MW PCS and PMS, engineering and installation




Smart grid demonstration project

• Busan Dongrae Market, Korea
• Peak shaving & load leveling
• 100kW / 224kWh LG Chem battery
• Commissioned December 2013
• LSIS scope: 100kW PCS and PMS, engineering and installation




Smart grid demonstration project

• Busan Industrial Supplies Market, Korea
• Peak shaving & load leveling
• 500kW / 806kWh LG Chem battery
• Commissioned December 2013
• LSIS scope: 500kW PCS and PMS, engineering and installation




Renewable Integration

Daemyung GEC

• Youngam, Korea
• Wind power smoothing
• 4MW / 14MWh Samsung SDI battery
• Constructed January 2016
• LSIS scope: 4MW PCS, power distribution and energy management system (EMS), engineering and installation




KOSPO Jeju Island

• Jeju Island, Korea
• Wind power smoothing
• 2MW / 8MWh Samsung SDI battery
• Commissioned November 2015
• LSIS scope: 2MW PCS, power distribution and EMS, engineering and installation




KEPRI Bigeum Island

• Bigeum Island, Korea
• Wind power smoothing, power quality
• 500kW / 250kWh LG Chem battery
• Commissioned June 2014
• LSIS scope: 500kW PCS, 1MVA STATCOM and EMS, engineering and installation



 
Introduction of EnGather
ESS brand born under the know-how and technology of LSIS. 
A solution that allows efficient energy management by storing electric power in battery and accessing such power when in need.