Automated Demand Response

Xelpower Solution


  • Power demand increases much faster than the speed of establishing new power plants
  • Energy demand is increasing remarkably along with the development of heavy or chemical industry
  • Sultry summer cause the increase of air-conditioner
  • The rise of coal price makes generation stations be lack of starting material
Xelpower's DLC(Direct Load Control)/ADR(Automated Demand Response) is a business solution for power utility companies that restrains peak load in the electric power system. The utility company makes a contract with end-users and directly controls customers' electric equipment during the peak load time, which will eventually save expenditure on new power plants.

The future power grids will be more complex but more energy efficient than the today system. Xelpower DLC/ADR will be solution to benefit energy suppliers an consumers alike.
  • End-users need to understand energy consumption patterns and power quality and determine whether to participate in ADR program.
  • Utilities want to aggregate loads for ADR program, because this will cope with rapidly increasing power demand economically and quickly.


  • DLC/ADR system : International trends for secure supply/demand balance especially in power shortage countries transmission.
  • National-wide benefit
    • -Electrical utilities cost saving in generation, transmission and distribution
    • -Industries cost saving (Avoiding unexpected power interruptions)
    • -Bill savings & incentive payments to customers
  • Edge-cut ICT-based technologies
    • -Real-time monitoring & control of loads vis internet
    • -Side-benefit to customers : power usage information, power quality monitoring, etc
  • Economics & prompt action technology
    • -Implementation periods : 6 months (supply-side options : 3~10 years)
    • -Total costs : 5~10% cost level of supply-side options


Track Record (for ADR)
  • Successful business track record in Korea for last 20 more years
  • Automated Demand Response(ADR) Controller, which was called to Demand Controller, for peak power management has been installed for 5,000 heavy load customers since 1995 in Korea.
  • Worldwide unique record to operate ADR in the nation, which was called to DLC(Direct Load Controller), until 2012 by power utility company, KEPCO, in Korea
    • -For the purpose of the balance of power supply-demand
    • -Up to 1,357MW (yr 2010) ☜ KEPCO’s authorized certifications
  • Four core patents of on-line ADR system (0402228, 0382464, 10-0187605, 0399548)
Global Sales & Marketing Activities
  • Tried to 12 countries for last six years on different continents and on-going 5 countries
  • Immediate business target within next three years : up to 2GW capacity for five countries



System Components

Service operator (OIS)
  • To monitor load curve in nationwide and operate & control total system in real time base
  • Functional connection between EMS and DLC/ADR center
X-Central Server / XS 1000K
Product Description
  • Communication Sever(FEP), DB Server, and Application Server
  • Internet, PSTN, Mobile Communication Support

XEMD (Xelpower Energy Management Device)
XEMD is installed in the customer’s site for controlling the customer’s load and monitoring the customer’s energy
  • Demand Controller with automated load shedding, scheduling, Peak shaving
  • Power Quality
  • Energy Cost Control
Hardware Description
  • Dimension : 419(W) x 177(H) x 120(D)(mm)
  • Communication Port : RS-232C Serial Port 2EA, RS-485 Port, Ethernet.
  • Digital Output : 2EA(C contact), 2EA(B contact)
  • Digital Input : 4ch(count pulse input, DM or Meter, dry contact)
Measurement Function
  • 64 samples per cycle
  • IEC 60687 class 0.5 accuracy
  • 4 Quadrant energy and demand
  • 47 real-time, true RMS electrical parameters
  • Per phase voltage, current, peak current demand, watts, VARs, kWh, and more
  • THD, frequency, Power factor, and more
Firmware Upgrade Utility with flash-based firmware
The End-User can Update the operating software inside your XEMS whenever new versions are available

Internet-Enabled Communication
  • 10Base T Ethernet port offers direct access through an Ethernet LAN/WAN
  • Protocol: TCP/IP, Xelprotocol TCP, Modbus TCP, telnet
XRCU(Remote Control Unit)
XRCU is installed in the customer’s load with XEMD via RS-485
  • XRCU transmit metering data to XEMD
  • XRCU receive the load on/off command from XEMD via RS-485
Hardware Description
  • Dimension : 225(W) x 148(H) x 115(D)(mm)
  • Communication Port : RS-232C Serial Port, RS-485 port
  • Digital Output : C-contact 2EA(On Contact, Off Contact)
  • Digital Input : 1EA
Measurement Function
  • 128 samples per cycle
  • IEC 60687 class 0.5 accuracy
  • 4 Quadrant energy and demand
  • 47 real-time, true RMS electrical parameters
  • Per phase voltage, current, peak current demand, watts, VARs, kWh, and more
  • frequency, Power factor, and more
Firmware Upgrade Utility with Flash-Based Firmware
The End-User can Update the operating software inside you XEMS whenever new versions are available

XEMS-SW(PC Monitoring Software)
  • Display real-time data and analyze logged information through PC Monitoring Software
  • Automatically or manually control any operation within your energy system remotely
  • Customize graphics for alarms, status indicators, control triggers, and facility views
  • Examine waveform overlay, odd/even harmonics, THD, K-factor, crest factor, vector diagrams
  • Configure alarms to annunciate through a variety of methods including an operation’s PC, mobile phone or email