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

1. LOW CARBON BUSINESS BREAKFAST
A PRACTICAL GUIDE TO THE GRID
CONNECTION PROCESS AND A LOOK AT
ALTERNATIVE CONNECTION OPTIONS
Steven Gough
Innovation and Low Carbon Network Engineer

2. Western Power Distribution DG Levels
Integration of DG

3. 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

4. Integration of DG
LOW CARBON
TECHNOLOGIES
LOW CARBON GENERATION
VOLTAGE RISE/DROP
VOLTAGE STABILITY
HARMONIC IMPACT
THERMAL CAPACITY
BI-DIRECTIONAL ENERGY FLOW
EQUIPMENT SUITABILITY
POWER FACTOR
FAULT LEVEL
Challenges of Connecting DG

5. 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

6. 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

7. 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
1010
1011
0100
Integration of DG
Alternative Connections

8. Thank you
Integration of DG
www.westernpowerinnovation.co.uk
wpdinnovation@westernpower.co.uk