Transcript EDITT PRESENTATION FORMAT

Power System Planning Horizons
Generation
Service Area Size
Transmission
Sub-transmission
Reticulation
2
5
15
20
Project Lead Time [years]
Enhancing Eskom Distribution
Network Planning
15 October 2007
Dr Clinton Carter-Brown
Eskom Industry Association Resource Centre
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Eskom Distribution Network Planning
Service Area Size
Eskom Dx Planning (≤132kV)
Generation
Transmission (>132kV)
Sub-transmission (>33kV & ≤132kV)
Reticulation (≤33kV)
2
5
15
Project Lead Time [years]
2
20
Present challenges
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Increased load growth
Universal Access Plan (UAP)
Need to improve network reliability
Access to critical data
Staff turnover and skills
Distributed Generation (DG) integration
Demand Side Management (DSM)
Overview of Network Planning dependencies
•
Eskom Research
Support
•
•
•
Dx Line
TESCOD
Planning
SC (stats metering)
Present
loading
• Power System Analysis (PSA)
LIRP
As-built HV
and
MV
network
data
• Geo-based
Load Forecasting
(GLF)
Future load
data (demographic
and
• Project
Needs Register
(PNR)
econometric data)Advanced
Methods
Electrification
spatial
backlog & policies
• Standards, guidelines
• Training of supply side and
• Evaluation
Base Systems
• National
Resources
• DSM
loadside
modelling
demand
alternatives
• Distributed Generation assessment
• Economic evaluation
Base Data of alternatives
• Reliability assessment
Overview of initiatives
Base
data
Management
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Base
systems
Enhanced
Network
Planning
Training &
Development
Reliability
improvement
Standards &
Guidelines
Base data
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Data porting into central SmallWorld database
Data capture processes
Standard values for power system analysis
Statistical metering (HV & MV load data)
Base systems
Economic analysis
of alternatives
GLF
PNR
(Project
Need
Register)
PSA
(Power
System
Analysis)
The
GLF provides the load
GLF
provides
the
load
to
GLF (Geo-based Load
Forecast)
Identify
needs
a geographical
environment
forecast
for which
the PNR
is
be used for
networkin
analysis
Export
network
equipment
and
related
technical
SpatialPurposes.
load forecast with
a plan
25 year
used to
future networks.
Build
projects
within
geographical
environment
attributes
to
a
network
analysis
application
planning horizon
PSA
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Future networks build in the PNR
environment are used by the PSA
for future network analysis studies.
PNR
Improved network reliability
Guidelines &
Training
CAPEX
Reliability link
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Probabilistic
reliability
assessment
Asset
utilisation
reporting
Standards and guidelines (new/updated)
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MV shunt capacitors
MV step-voltage regulators
Distribution voltage regulation and apportionment limits
MV underground cable systems
Network asset cost of supply methodology
Methodology for network master plans and network
development plans (separate presentation)
 Reliability guideline
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Standards and guidelines (in draft)
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Network planning philosophy
Lines and cables
Transformers
Geo-based load forecasting
Unbalanced network technologies
Training & Development
Internet based learning
Three modules targeted for
Completion within 6months
Virtual Classroom
ECSA
accreditation
Conventional
Classroom
In parallel also started a
Specialist development program
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Management support
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Industry Association Resource Centre (IARC) support
National Network Integration Forum (NNIF)
Master planning
Funding
Reporting
Concluding remarks
 Intended to make a step-change in the quality and
effectiveness of Eskom Distribution Network Planning
 Result in well trained planners, with the data they require
at their fingertips, utilising systems and tools that enhance
their effectiveness and assist in the implementation of
guidelines and standards
 Benefit is intended to be realised Industry wide
 Standards and guidelines are available via DT website
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