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Power QualityNovel ICT solutions for

Smart Electricity Distribution Networks

Presented at the Brokerage Day, 22 jan 2009, Brussels, Prof.dr. Frank Leferink

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Challenges

Electrical distribution systems changes to distributed

generation of energy

(solar, CHP (combined heat and power), etc) The grid will has to be smart to cope with this

The smart grid has to deal with dynamic effects Already now half of industry suffers from

power quality problems (research LPQI)

Costs due to power quality problems estimate by

European Copper Institute (ECI): 150 B/year

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Challenges

Interruptions of supply 13%

Harmonics: 5%

Voltage dips: 24%Short interruptions: 19%

Transients and surges: 29%

In a Smart Electricity Distribution Network the

dynamic effects increase,which will drastically decrease the Power Quality

Froms

upply

(utility)

tothe

userne

twork

Ref. ECI

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Problem

Traditional power system analysis and design methods:

are based on models that do not capture dynamic power

quality aspects. We need to consider: Rapid varying energy consumption and production

The non-ideal behavior of consumers/generators

The actual behavior of power distribution user network

Abnormal behavior (switching of loads) Weaker distribution grid

Focus was and is on quality of supply,

less on quality of generation and quality of consumption(ref. contradictions between EN50160 and EN61000 series)

Metering is conventionally focused on static power

consumption.

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Problem

The proposed research and development activity is

on

physical modeling approach and analysis method of the

dynamic behavior of the grid

monitoring of the dynamic behavior

metering systems and

data gathering networksfor higher power quality

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Participants (status mid. Jan)

Netherlands:

University of Twente

Lambda Engineering

THALES

Austria

LINZ AG

Germany:

EnBW

University of Stuttgart

Siemens

Hungary:

University of Budapest

Italy:

Polito di Torino

PMM

ASEA

Poland:

University of Krakow, withKGHM Polska Miedz, PKN ORLEN,

ELEKTROTIM, PSE-Operator, ENION,

ELSTA, Centralnym OrodkiemChodnictwa, ASTAT

Slovenia:

Elektro Celje

University of Maribor Roemenia:

Transelectra SA

Techn.Univ.of Cluj-Napoca

Electrica SA United Kingdom:

University of Nottingham

Areva

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Key activities

1. Modeling and simulation

power distribution grid

(radius 1000 m to 30m)

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Key activities

2. Modeling and simulation of the connected devices and systems.

Solar, CHP generation; Inverters, switched loads

of the generation and transmission oftransients, sags, surges, dips etc.

of stability3. Smart metering and data gathering of dynamic effects

(not only consumption, but also the PQ: crest, transients,..

4. Secure and reliable data transmission

5. PQ corrective architectures

user/

generatoruser/

generator

user/

generatorPOI

user load and

generator

fluctuationsQuality ofsupplysupply

U(t)

Z(f)I(t)

Z(f,t)

Z(f,t, x,y,z) user/

generator

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Results

Analysis and design methodology, and

Design tools, to

enable power distribution network designers and product

designers to deliver viability,

to define proper cost-effective measures and

to guarantee a minimum power quality of all stakeholders.

Case studies - demonstrator projects

In lab, then high-tech industrial plant and a village with

distributed generation

Design, metering, evaluation and validation

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An example:

December 2008, Dutch Ministry of Economic Affairs

granted the

Power Quality project: 1.1 M research budget