E-CO Tech
Demo of remote load control!Control of power loads by
Hafslund Nett (former Viken Nett)!
Composed by E-CO Tech (Håvard Nordvik)
The Demo is made for the EFFLOCOM project (Energy EFFiciency and LOad curve impacts of
COMmercial development in competitive markets)
E-CO Tech
Ongoing activity EFFLOCOM pilot:
identifying new controllable load groups designing new tariffs testing load control during limited time periods.
Implementation of hourly metering of 6200 customers.
MAIN OBJECTIVES Postphone distribution network reinforcements Achieve network tariffs that gives the customer
incentives for investment in load control. Participate in the Regulating Capacity Option Market
Facts: Load control in the area of Hafslund Nett
E-CO TechExecuting remote load control
GSM (SMS)
+Telephone
3. Customer level
2. Data transmission level
Terminal
1. Central level
CIS
MVS
FrontEnd
Meter
Control unitControl unit (relay/switch )
High pressure pumps, electrical boiler, water heaters, motors, fans, air-conditioning, cooling compressors etc
E-CO Tech
Loads in the concessionary area of Hafslund Nett
MW; 450
MW; 210
MW; 3240
Loads with back-up system(dual fuel), automaticallycontrolled
Loads with or without back-upsystem, manually controlledby the customer afterreceiving an alert
Other loads with or withoutback-up system. What can becontrolled?
Today, About 20% of the peak load is controlled!Loads with limited flexibility represents a huge
potential!!!
Today, controllable loads mainly consists
of electric boilers
E-CO Tech
Description of the infrastructure of load
control and hourly metering
E-CO Tech
Central level
CIS
MVS
FrontEnd
The Front End system is the interface between the system of direct communication and other software programs.
One Front End is required for each system of communication (GSM, GPRS and PSTN)
All the software systems of the Network Company are gathered in the central level system. Customer Information System (CIS), Meter Value Server (MVS) etc.
E-CO Tech
Transmission levelThe system of direct communication of Hafslund Nett consists of GSM (Global System for Mobile communication) with SMS- and GPRS technology, as well as PSTN (Public Switched Telephone Network).
Hafslund Nett mainly uses communication directly from the Front-end system to the consumption point, without any communication concentrators.
GSM (SMS)
+Telephone
E-CO Tech
Customer levelUsually, the terminal is connected to the meter of the actual loads. In most cases electronic meters are used.
The terminal serves as a temporary storage of meter values before transmitting the metered data to the central collection system.
The terminal executes the load interruption or activates the load control by transmitting a signal to the load control unit. Load control can be interruption of loads or downward adjustment of loads.
Terminal
Meter
Control unit (relay/switch )
E-CO Tech
Infrastructure of load control
GSM/radio/PSTNSCADA
NIS
Etc..
3. Customer level
2. Data transmission level
1. Central level
TerminalD100
Meter
CIS
MVS
FrontEnd
Controllable loads
Terminal
E-CO Tech
Controllable load
Controllable load
Possible grid levelsfor meteringand load control
22kV
72kV
132kV Internet:LeKey
Network Companybrowser
Customerbrowser
Wireless communication, GSM
E-CO TechResults from the pilot project
Pumping Plant
Furniture dealer Cooling compressors
Melting furnaces
Server
1,5MW 1,0MW0,4MW 1,0MW 1,5MW
Interruption twice a day for
two hours
Interruption once a day all day
6 hours rest between each interruption
Maximum 10 interruptions
per year
If a extraordinary situation occur, interruption is not
possible!!
E-CO Tech
Example of extraordinary situations!
Inundation or conflagration watersupply of Oslo must have priority in such situations (Pumping plant)
If the request of remote load control occurs during starting-up a Copper-melting process, the melting furnaces will be full of copper and a the load control have to wait until the furnaces are empty (Small industry)
If any failuare occurs to the communication between the Network Company and the customer load, this could involve expensive and irreparable failure on the customer’s activity (All customers)
E-CO Tech
No influence ?
When convincing the customer to permit remote interuption/control of vulnerable loads, several barriers arise:
Duration of interruption/controlTime of rest between interruption/controlNumber of interruption/controlAlert before interruption/controlTechnical solution for interruption/controlSufficient cost-benefit through the Network tariffConsequense of a possible failure of interruption/control (reliability of direct communication)
E-CO Tech
Hafslund Nett uses LeKey software to execute the
remote load control(Demonstration)
E-CO Tech
Example – screen picture of Viken (1)
Controllable loads Installed power load
Reporting historical load curve for each
load
Reporting resulting load curve after
interruption/control
E-CO Tech
Reporting results from remote load control
Executing load control
E-CO Tech
Hourly metered load curve of each controllable load
E-CO Tech
Switching off the load at 12:00
Switching on the load at 13:00
E-CO Tech
Internet:LeKey
Executing remote load control
GSM (SMS)
+Telephone
3. Customer level
2. Data transmission level
Terminal
1. Central level
CIS
MVS
FrontEnd
Meter
Control unitControl unit (relay/switch )
High pressure pumps, electrical boiler, water heaters, motors, fans, air-conditioning, cooling compressors etc
LeKey:
•Web based
•Communicates with different categories of terminals
•Designed for operating in the RCOM market
The End
