Friday 21 April 2023 1

Balancing in Microgrids

And the role of a DSO

Drs. J.H. Blom MBE

5 juni 2012

Jos Blom

Life

Info

Energy

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Alliander

InvolvedTrustedBest

InnovationSustainabilityLocal

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Flexibility - Balance

Transport Production Demand

Storage

Transfer P2G / P2H

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Flexibility - Balance

Transport Production Demand

Storage

Transfer

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Flexibility - Balance

Transport Production Demand

Storage

Transfer

Drivers for Microgrids

Microgrid risks

Island modes: controlled grid outage, power onsynchronization when grid on

uncontrolled switch off grid, still power onDanger for labour

Short Circuit

Ground fault

Power quality

Solutions

Energy Storage Definition

Joule / Watt

ValueRole Joule / Watt

Energy Storage Definition

Joule / Watt

ValueRole

Joule / Watt

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Electricity storage world wide

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The value of electricity storage 14

Value off Electricity Storage

Optimizing Demand - Supply

Minimizing OPEX and

CAPEX

Integration sustainable production

Power Quality

Time of use

Deferral investment production capacity

Support sustainable production

Support outage

Frequency and reactive control

Black start facilities

Deferral investment production capacity

Reduction Gridlosses

Alternative transport

Base load operation

Short peaks (APX)

Support decentralized production

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2

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4 8

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127

Lower connection capacity16

Minimizing AC/DC Conversions

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Congestion management 11

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Voltage control14

Better turbine efficiencies5

System balancing 3

Self control19

More reliable energy20

Transmission & DistributionProduction & Trading

End user(B2C, B2B)

Strategy

Customer

Aandeel-houder

Maat-schappij

Personeel

€Autonomy Local Green Mobile

Pilot: Solar Connection

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Results

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Results

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Consequences of growing renewables

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Solar

House hold

How new customers behave

New household

How energy markets view all customer

Powermatcher gives you an alternative

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By moving

load from this

period

increase your use

here

How it works

marketBid curve power Bid curve power

AppliancesCalculate energy need

Send bid on how much energy at what price

Auctioneer calculates price where supply=demand

Sends back market price

Appliance switched on if in the money

The cool part

• Bottom up approach means the appliances (you) decide if/how much external influence you accept

• Appliances tell how much flexibility is available at what conditions. (no surprises)

• No mismanagement of devices or unexpected lost comfort

• Works in your home just as good as for a (local) market

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The tricky part

• You need a standard format for the (energy) bid

• Fitting it in millions of appliances means it should cost next to nothing

• Appliances manufacturers and energy providers need to cooperate

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Free download

Technical structure

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Overcoming the Challenges Of Balancing Intermittent RenewablesWithin A Microgrid• Managing the delicate balance of supply and demand while providing the necessaryelectrical safety functions• Forecasting the supply of wind and solar• How to use storage in rural vs. urban scenarios with intermittent renewable?