learning event: all presentations - Mar 2013 - UK Power Networks

61 Pages·2013·3.27 MB·English

Flexible Plug and Play
Smart Solutions for connecting Distributed Generation
Sotiris Georgiopoulos
Contents
• Introduction to Flexible Plug and Play
• Trial location
• Case studies
• Overall project plan
• Commercial arrangements workstream
• Concepts to keep in mind throughout the day

2
2011. UK Power Networks. All rights reserved
Flexible Plug and Play
Objective: Cheaper and faster connection of DG to constrained parts of the network by
trialing smart grid technologies and smart commercial agreements

Duration: 3 years: January 2012 - December 2014

Project Value: £9.7 million (6.7m funding from LCNF Tier 2)

Partners:
2011. UK Power Networks. All rights reserved
Flexible Plug and Play:
Trial location
Connected Wind Farms
Grid Substation Consented Wind Farms
Primary Substation Received Applications Wind Farms
33 kV 132 kV 400 kV Scoping Sites Wind Farms
Location: Cambridgeshire
Surface: ~ 700km²
Network: 33kV and 11kV Network (2 Grid, 10 Primary substation sites)
Connected Wind Generation: 120MW
Planning & Delivery Stage: approx 270MW

2011. UK Power Networks. All rights reserved
In the context of the heat map
The challenge – March Grid (case study)
Constraints
(focus on 33 and 11kV)
• Reverse power flow
limitations
• Thermal line limits

5
Classification: Restricted 2011. UK Power Networks. All rights reserved
Case Study 1: March Grid
The challenge – March Grid (case study)
The challenge
Constraints
• Reverse power flow limitation (N-
1) due to protection – set at a max
of 75% rating of the transformer

• Constraint occurs at min Load
max Gen situations

Consequences

• Substation considered full

• Very expensive quotes for
connections to projects in the
vicinity (Distance or increased
voltage level)

G L
Generator Load Circuit
breaker 6
Classification: Restricted 2011. UK Power Networks. All rights reserved
Case Study 1: March Grid
The solutions
MEASURE
• Reverse power flow limitation (N-1)
due to legacy protection – currently set
at 75% rating of the transformer

• Solutions:
 Novel protection scheme
CONTROL
G
 Active Network Management
Interruptible generation
 IP Communications
 Suitable commercial &
contractual framework

G CONTROL

Interruptible generation
7
2011. UK Power Networks. All rights reserved
Case Study 2: Single Wind Farm
Dynamic Line Rating
Business as Usual: Smart Solution:
• Higher costs  Smart Device – Dynamic Line Rating (DLR)
• Longer lead times  Active Network Management (ANM) System
 Smart Commercial Arrangements

WAN /
Local Substation Local Substation
RF Mesh
thermal constraint thermal constraint
DLR
New 33kV
underground cable

Closest point of
connection

ANM
Proposed New Proposed New
Generation Project Generation Project
2011. UK Power Networks. All rights reserved
Timetable
Successful Delivery Reward Criteria - SDRC
SDRC 9.4
SDRC 9.3
SDRC 9.1 Demonstrate FPP
IP Comms SDRC 9.8
Stakeholder Characteristics (ANM live) SDRC 9.6
Platform - LIVE Deploy Quad
Engagement Completion of core Offer of FPP
Booster
report infrastructure deployment connection to real
customers
Sep Dec Mar Jun Sep
Dec 2014
2012 2012 2013 2013 2013
SDRC 9.2
SDRC 9.5 SDRC 9.7
Development of
FPP Connection Delivery of Strategic Demonstration of
smart commercial
offers First issue Investment active power flow
arrangements
to customers Model and voltage
management
Trial Participant Engagement
2011. UK Power Networks. All rights reserved 9
Customer engagement
 Seven projects seeking connection in the trial area were identified and six of them
(26.2MW) have received FPP offers on1 March 2013

 The FPP “Opt-in” offer introduced a standstill period and a commitment to UK Power
Networks to provide an alternative by 01/03

 Customers received a “Briefing Document” which is an FPP information pack

 Applications were consolidated in the FPP area to ensure all customers are treated
equally

Accept FPP
variation
S16 offer with Receive s16
Accept s16 FPP
Enquiry and FPP Opt in variation Proceed with
Offer & opt investigation
application option including FPP s16 Offer
into FPP period
alternative
1st Walk away
stage
payme
nt 1 March 2013
2011. UK Power Networks. All rights reserved