Active network management and microgridsSami Repo Mervi Suni Teemu Leppälä Kimmo KauhaniemiTUT NSN ABB UWASA
IntroductionActive network management is a concept to manage network by utilizing active resourcesMicrogrid is another concept focusing on the management of selected network area
Results so far (2FP)PSCAD Energy centre microgrid modelActive participation of LV microgrid to Smart Grid voltage control• voltage level can be affected in MV as well management of selected network area
Difference is the ability of microgrid to self-support itself by utilizing internal resources
Results so far (2FP)Total site management project
• voltage level can be affected in MV as well as in LV network by active and reactive power feeding or absorbing of a battery based energy storage
Centralized management server hosting management applications and related data
Green Energy Controller for
Plans for the 3rd Funding Period• DMS to support DER and microgrids
(modelling, DER applications for
MobileOperator
Management Server Site
SGSNGGSN
Firewall
Internet
IT Shelf(Linux PC)
Grid
Windmill
Solar panel
Generator(s)
Battery bank
Fuel
Air-
Radio Network(GPRS)
O&M agent with adaptor
applications and related data Controller for data collection
DER in DMS• Analysis of island loads• Model for DER
technology adoption
(modelling, DER applications for restoration, adaptive size of island)
• DER related value chains, benefits and business opportunities for a DNO
• Further developing the microgrid concept considering the technical and business aspect arising from the participation to the active network management of smart grids
panels
Air-Conditioner
O&M agent with adaptor communicates with centralized management server
technology adoption
Coordinated voltage control (CVC)
active network management of smart grids• Centralized CVC based on optimization• Benefits of CVC• Island operation controls (automatic load
shedding and virtual inertia)
Outcome of the workshop
CVC provides a cost effective option to connect DG into weak 100000
150000
200000
250000
300000
350000
400000 Cost of losses + Use of grid fee - Distribution charge of DG Lost revenue due to curtailment
DG lost income
DNO costs
Defined use cases• Microgrid management on different states• Microgrid voltage and frequency support• Microgrid protection when in island mode
Outcome of the workshopDG into weak MV network0
50000
100000
Cos = 1.0 Cos = 0.92ind Vref = 1.02 CVC
• Microgrid protection when in island mode• UPS device summer cottage• Using DG in power restoration• Voltage control in distribution network
(Local, centralized and decentralized)SGEM (Un)Conference 16.-17.11.2011