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