SIG approach Impact of DES integration to the grid

31th of march 2014

Yi-Hui Tseng, SIG, innovation and assets management resp.

Jean-Marc Allenbach, hepia, teacher HES

Juan Antezana, hepia, research assistant

Sommaire

2

SIG

… in short

DES integration: SIG approach

… Technical monitoring

… SIG objectives

… Project organisation

Partnership with HEPIA : Exemples of projects

… DG2 automation

… Impact of DER integration: GEsolaire

Future perspectives

SIG

… in short

3

1.1

Owners

4

Independent company under public law

Turnover of CHF 100 millions :

Geneva state 55%

Geneva city 30%

Geneva townships 15%

SIG scope of competences

Distribution

system operator

Coverage area

Coverage area: 237.7km2

270’000 customers

2943 GWh of electrical consumption

in 2013

In 2002, it was 2635 GWh

502 MW Pmax in 2013

In 2002, it was 461 MW

DES integration

… SIG approach

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1.2

Context

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2009: Market liberalization for over

100,000 kWh and implementation of

a national regulator.

2011: Switzerland’s decision to exit

nuclear production

2013: 2050 Energy Strategy

2014 « Initiative 12:400 » selfconsumption

Developement of new renewable energy and integration of

Decentralized Energy System

The change

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Decentralized

network

management

News actors

News uses

DSO’s

Challenges

Intermittence of

production

…

DSO issues

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Anticipating the impacts of DES integration

News market

News roles et responsability

New fee retributi

on model

----

Management of

decentralized

production and it’s

intermittence

Votlage quality control

New technology

(smartgrid, storage, ..)

DES in GENEVA

11

~600 IPD, photovoltaic essentially

Others:

CCF gaz : 7.3 MW

Hydraulique 0.8 MW

Biomasse : 0.3 MW

CCF diesel : 0.5 MW

The Evolution – SIG prognosis :

An increase of photovoltaic

~ 400 MW in 2035 Pinst totale : 36.3 MW

P inst PV : 27.4 MW

Pinst Autre : 8.9 MW

SIG program

Short term Middle term Long term

Customer’s satisfaction « Customer’s strategy and

services »

Voltage quality control « DES connection rules »

« DES protection »

Cost « control » self-consumption pricing

« DES billing et metering »

Survey of the legal frame

work Standards harmonisation

New technology prospect Smart substations, Smartgrid

New network management

practices Energy regulation, impact of electric

mobility, etc.

Dynamic pricing

Storage

Micro-grid

Fundamental role in the new energy strategy :

Project management

Collaboration with other DSO and universities

Fund raising

Partnership with HEPIA

… examples of projects

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1.3

Partnership with HEPIA

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Exemple of projects

DG2 automation

Objectives :

•developing a distribution grid

management model with distributed

generation.

•showing the added value of an active

management

•developing a management based on

IEC61850.

•creating an engineering process by

IEC61850.

DES integration impact

Objectives :

identifiying and proposing clear

solutions for DES connection and

metering

identifiying and analysing the technical

& economical impact of DES

development

MV grid impact

LV grid impact

Identifying smartgrid possible action

drivers and solutions

DG2 automation

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DG2 automation

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DG2 automation

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-q0

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Law for reactive power

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q0

q= Q/S

DG2 automation

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DG2 automation

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DG2 automation

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DG2 automation

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Four-stage

Fixed reactive power law.

DG2 automation

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Four-stage

Fixed reactive power law.

Fixed reactive power law, IEC61850 communication, unused.

DG2 automation

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Four-stage

Fixed reactive power law.

Fixed reactive power law, IEC61850 communication, unused.

Adjustable reactive power law, IEC61850 from MV/LV station. P > 0,5 MW

DG2 automation

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Four-stage

Fixed reactive power law.

Fixed reactive power law, IEC61850 communication, unused.

Adjustable reactive power law, IEC61850 from MV/LV station. P > 0,5 MW

Optimization program on upper supervisor.

DG2 automation

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Four-stage

Fixed reactive power law.

Fixed reactive power law, IEC61850 communication, unused.

Adjustable reactive power law, IEC61850 from MV/LV station. P > 0,5 MW

Optimization program on upper supervisor.

15years

DG2 Automation

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Study of the impacts of a high photovoltaic

penetration in low voltage grid of Meyrin,

Geneva

DG2 automation: Meyrin

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MV/LV substation: Grand Puits

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Grand Puits technical parameters

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Transformer MV/LV:

18.2 kV : 400 V

Snom = 1000 kVA

Conductor:

Cu-3 x 150 mm² → IL= 275 A (P3Φ=190kW)

Grand Puits PV systems

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NEPLAN model

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Simulation criteria

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We first simulated the worst case for the low

voltage grid:

Minimum Load (@15 min)

Maximum Solar Power Production:

Best journal solar radiation (@10 min)

Optimal steady position

PV efficiency = 18%

Results and conclusions

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Results and conclusions

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GE-solaire

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Study of High photovoltaic penetration in

Geneva’s electric power grid

HV/MV substations

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MV/LV substations

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MV and LV grid

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Critical area pre-detection criteria

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Selected areas

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PVs surfaces

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DB results

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Potential PV capacity : 150MW

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MV lines critical situation detection

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Statistical behavior

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Perspectives

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1.4

Perspectives

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Currently, the impacts of DES integration over the canton are controlled :

« few » DES in Geneva (600 DES, Pinst = 36 MW)

The solution to control the impact of DES conenction are :

Injection of reactive power

Grid reinforcement (reiumbursed by Swissgrid)

Power limitation

DSO’s perspective to anticipate the DES’s increase :

Project Management in new pricing model, voltage quality control, etc.

Customer’s satisfaction

Partnership with other DSO : standards harmonisation, etc.

Survey of legal framework

Apply resarch in Smartrid technology, storage, etc.

Actor in the new energy strategy

Perspectives

Thank you for your attention

Questions?

48