Western Power Distribution Presentation Distributed Community Energy Low Carbon South West Business Breakfast 190515

LOW CARBON BUSINESS BREAKFASTA PRACTICAL GUIDE TO THE GRID CONNECTION PROCESS AND A LOOK AT ALTERNATIVE CONNECTION OPTIONS

Steven Gough

Innovation and Low Carbon Network Engineer

Western Power Distribution DG Levels

Integration of DG

Western Power Distribution DG Levels

• 7.8 Million Customers

• 55,000 sq km area

• 216,000 kms of linear assets

• 184,000 substations

• DG Capacity Connected up to Q3 2014 – MVA

• DG Connected March to September 2014 – MVA

• DG Capacity Offered and Accepted – MVA

Integration of DG

4,100

640

8,800

Integration of DG

LOW CARBON

TECHNOLOGIES

LOW CARBON GENERATION

VOLTAGE RISE/DROP VOLTAGE STABILITYHARMONIC IMPACTTHERMAL CAPACITY

BI-DIRECTIONAL ENERGY FLOWEQUIPMENT SUITABILITYPOWER FACTORFAULT LEVEL

Challenges of Connecting DG

The connection process

• Submit application to New Supplies on a ENA form with relevant plans

• Application sent to the relevant department

• We clarify any additional information

• We prepare the Connection Offer Letter which included the connection and reinforcement costs

• You need to accept the Offer Letter and pay the deposit

• The works are started

Top Tip - If you need a cost indication you can request a Budget Estimate free of charge without applying for a full offer or have a discussion with your planner

Integration of DG

Generation Capacity Maps

• Estimated capacity on 11kV/LV substations• Highlighted 33kV with voltage or thermal issues• Generation Capacity Register• Greater visibility of our network.

Integration of DG

TIMED

• Generation curtailed within specific times

• Sub 1MVA

• Modelled seasonal capacity variations

• Localised control only

• No comms

• May have for voltage constraint

• Non-optimised

SOFT-INTERTRIP

• Releases pre-fault capacity with trip facility

• 11kV and 33kV

• Real-time monitored values

• Small clusters of generation or simple pinch points

• Existing monitoring with localised control

ACTIVE NETWORK MANAGEMENT

• Fully optimises capacity based on all constraints

• Management of generation using LIFO principles

• Real-time granular control of output

• Requires new Active Network Management control and monitoring systems

Costs, Complexity & Network Optimisation

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Integration of DG

Alternative Connections

Thank you

Integration of DG

www.westernpowerinnovation.co.uk

[email protected]