REW 2011 Panel How Utilities Are Making It Work GPH

8/4/2019 REW 2011 Panel How Utilities Are Making It Work GPH

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EVOLVING THE GRIDHow Utilities Are Making It Work

Greg HenrySmart Grid Solutions Architect

Telvent


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Smart Information for a Sustainable World

OutlineChanging Nature of theSmart Grid

Grid Issues caused byRenewables and EVs

Grid Benefits afforded byRenewables and EVs

Utility Solutions

Further Considerations


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What is the Smart Grid?Highly automated and interconnected electricity delivery system

Two-way flow of bothpowerpowerpowerpower

andinformationinformationinformationinformation


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The Evolving Grid

Requires a shift in utilitymindset

Generation and load are nolonger isolated

Transmission systems must

consider distribution loadcenters like sometimegenerators

Distribution networks mustapply transmission concepts

Move from load following toload shaping

New market tools


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The Evolving GridRequires tighter coordination/integration in utility operations

TransmissionTransmissionTransmissionTransmission

But it is still gettingsmarter

Synchrophasors

Wide-area monitoring

and special protectionFACTS devices

Originally designed forone-way power flow

Traditionally guided byrule-of-thumb

Sized to peak load,assuming diversity

Traditionally no insightinto the network itself

has been Smart Gridfor a long time

DistributionDistributionDistributionDistribution

is now the focus ofimprovement


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Grid Issues: Distributed Generation

High penetration of renewableresources

Loss of generation concerns fordifferent resources

Power-load balancing

System stability

Need for power storage

Pumped, batteries, thermal, etc.

Other power issues

Voltage regulation

Power quality

Fault location & protectionsensitivity

Frequency & voltage deviations

System security


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Grid Issues: Electric Vehicle Charging

High penetration EV

Local equipment overloads

Peak load sizing

EV charging

Competing goals: manufacturervs. utility vs. consumer

Utility-controlled chargingCustomer concerns

Can EV really be used as aregulating resource or VPP?

In the ideal world

Renewables + storage =convenient and sustainableEV charging


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Grid BenefitsClear benefits

Reduced carbon footprint & GHG

Local air quality improvement

Reduced fuel price volatility

Solar and PV: reduced peak power purchases

EV: new revenue source

Its the right thing to do even if it is a PITA!

Benefits that may require some policy changes

Strategic load control / storage to relieve overloads

Microgrid operation to improve reliability

VPP operation for economic dispatch


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Utility SolutionsFast conventional generators

AGC

Greater spinning reserves

Control over customer assets

Throttling, modulation, inverter control

Controllable loadsVoluntary customer incentives

Mandates dont work very well

Utility-owned Energy storage

Electric and thermal

Strategic grid optimization and intelligent operation


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A Smart SolutionAdvanced Distribution Management

Integrated monitoring and control of distributed resources

State EstimationState EstimationState EstimationState Estimation

System-wide optimization features

Volt/VAR control

Dynamic network (and protection) reconfiguration

Load management

Storage management

Portfolio balancing

System reliability


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A Smart SolutionRequires improved knowledge of the distribution system

Detailed engineering models

Improved asset tracking (GIS)

Distribution telemetry (sensors)

DG/EVmodeling

Near-termforecasting

Weatherintegration


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Volt/VAR control qualifiedas Green Energy

DG interconnection processimprovement

Smart Grid operationssupporting DG

DG and thermal storagemanagement

Utility Solutions


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Further ConsiderationsControl of demand-side generation

Reactive power control: how do we pay for kVAr/kVArh?

Who pays for required grid improvements?

DMS & system protection

System upgrades: transformer & conductor resizing

Grid storage, fast reactive / generation support

New Energy Markets

At what point can we / do we enable active customer participation?


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Thank you!

Greg HenrySmart Grid Solutions Architect, Telvent

[email protected]+1.404.861.7704

REW 2011 Panel How Utilities Are Making It Work GPH

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