Transcript Modernisation of EHV Transmission System

RESTRUCTURED APDRP-II IN XI PLAN
Scope of Part - B :
 Strengthening of Distribution System.
Fund Allocation of Part - B:
 Proposed fund allocation Rs 40,000 Cr.
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Steps for Preparation of DPR
 Collection of data
Physical,
Loading,
Losses,
Voltages
 Computerise Data
 Validate Data
 Benchmark Performance Parameters
 Prioritise feeders/DTs
 Group feeders for Optimisation
Contd…
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Steps for Preparation of DPR
Evaluate options
R&M,
Augmentation,
New Work
Cost benefit analysis
Prioritise & Shortlist
Finalisation of DPR & submission to nodal
agencies
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Contents of DPR
1. Executive Summary
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Introduction
Objective
Scope & Cost Estimate
Benefits
Implementation Schedule
Payback Period
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Contents of DPR
2. Town/circle profile & organization setup
 Consumers profile
 Existing distribution system with sources of supply
 Details of sub stations, feeders, DTs with electrical
and physical boundaries etc.
 History of Load growth & Consumer growth
 Power and energy flow details
 Metering details at all voltage levels
 HT/LT Ratio
 Organisation Setup
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Contents of DPR
3. Commercial performance
 Billing details
 Input Energy
 Billed Energy
 Revenue Billed
 Revenue Realised
 T&D and AT&C losses
 Feeder outage and reliability index
 Power & Distribution transformer failure rate
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Contents of DPR
4. Constraints & Difficulties in the existing system
 Adequacy of EHV transformation capacity for
supply of power
 Adequacy of Sub Transmission capacity at 66kV
or 33 kV level sub stations
 Overloading of 66kV or 33 kV, 11 kV and 440
volts feeder
 Overloading of distribution transformers
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Contents of DPR
5. Scope of R&M works for
 Existing Sub station
 Feeders (including reconductoring, Bifurcation,
Segregation, Conversion to under ground cable,
Conversion to Arial Bunch Cable (ABC) etc.
 Distribution Transformers
 Service connection
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Contents of DPR
6. Scope of New Works for
 New Sub station
 New Feeders
 High Voltage Distribution System (HVDS)
 New DTs
 Capacitor bank - HT & LT
 New Service connection
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Contents of DPR
7. Project Implementation schedule
 Schedule for NIT,OBD & LOA.
 Schedule for Project Execution
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Contents of DPR
COST BENEFIT ANALYSIS
 Estimated cost of the scheme
 Increase in annual revenue due to
o Increased energy consumption (Load growth)
o Reduction in technical losses
o Reduction of commercial losses
 Total annual benefit
 Payback period
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Contents of DPR
Bench marks of performance (Yearly)
Sl
Benchmark Parameter
a)
Metering efficiency (Input Vs.
metered energy)
b)
Collection efficiency (amount
collected to amount billed)
c)
Transmission & Distribution losses
d)
DT Failure rate
e)
Number of feeder outages
f)
Period of feeder outages
g)
Reliability Index
h)
Number of consumer complaints
i)
Consumer complaint disposal time
k)
AT&C Loss
Present
Level
Level to be
achieved
Date by which parameter
would be achieved
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