short term open access in inter state transmission
DESCRIPTION
This paper deal with the Short term power market in IndiaTRANSCRIPT
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By:
Chandan Kumar
Emp.No: 02616
ET,WRLDC
Project Guide :
Shri. P. Pentayya
GM,WRLDC
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� India : World Fifth Largest Energy Consumer.
� 4% of Global Energy Consumption by 17% of the World Population.
� Installed Generation Capacity 201637.04 MW.
� Consist of two Grid connected asynchronously : NEW Grid and Southern Grid.
Power System Constitutes of three entities :
� Generation.
� Transmission.
� Distribution.
Apart from them Grid Management is required for the Real Time operation.
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Indian Power Market can be categorized on the basis of duration
of trade between the buyer/seller and Generator/Drawee:
� Long Term Access : It is for a period of 12 years up to 25 years� Long Term Access : It is for a period of 12 years up to 25 years
� Medium term Open Access: It is for a period of 3 months up to 3
years
� Short term Open Access :It is for a period of up to 1 months
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Short Term Market Constitutes of :
� Bilateral Market
� Power Exchange Traded Market
� UI
� Ancillary Services
� REC/Emission Market
Short Term open Access Constitutes of :
� Bilateral Transactions
� Collective Transactions
� Sometime STOA is used in literature for Short Term Market .
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11%
Indian Power Market
Jan 2011 - Feb 2012
Short Term Market Contribution 9% : 2009-10
10% :2010-11
10.75 % 2011-12 (As Projected)
89%
Short Term market
LTOA and MTOA
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Total electricity
transacted through
Traders and
PXs(MUs), 39%
Total electricity
transacted through
UI, 30%
ST Market
Jan 2011-Feb 2012
'Total electricity
transacted Through
Direct Trading
(MUs), 15%
Day Ahead market
of IEX, 15%
Day Ahead
market of
PXIL, 1%
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� Decreasing trend of UI
� PX contribution has shown the increasing trend
over the years.
� PXIL contribution is less compared to IEX � PXIL contribution is less compared to IEX
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1000
1200
1400
1600
En
erg
y (
MW
s) UNCONSTRAINED CLEAR
0
200
400
600
800
En
erg
y (
MW
s)
VOLUME IEX
ACTUAL CLEARED VOLUME
AND HENCE SCHEDULED IEX
UNCONSTRAINED CLEAR
VOLUME PXIL
ACTUAL CLEARED VOLUME
AND HENCE SCHEDULED PXIL
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� System constraints are more in Nov-April
leading to less cleared volume of power
� 9.8 % of the day ahead transaction through
power exchange was not approvedpower exchange was not approved
� The electricity demand through day-ahead
contracts from PXs is more in winter and
reduces in summer season
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4
5
6
Pri
ce (
Rs/
kW
h) 'Weighted Average Price of electricity
transacted through Traders (Rs/kWh)
0
1
2
3
Pri
ce (
Rs/
kW
h)
Weighed Average Price of electricity
transacted Through IEX (Rs/kWh)
Weighed Average Price of electricity
transacted Through PXIL (Rs/kWh)
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� Price of electricity through traders is more
compared to through PXs
� Month October the PXs price is more compared
to price through tradersto price through traders
� While in Feb-march 2011 the PXIL price is more
compared to traders pricing of electricity
� Tough completion between the traders and PXs
can be observed here as the price difference is
varying continuously
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10
12
14
Directly Through Power Exchange (Rs/kWh)
Through Term Ahead Market through Power Exchange
(Rs/kWh) WEEKLY CONTRACTS
0
2
4
6
8
Jan-11 Feb-11 Mar-11 Apr-11 May-11 Jun-11 Jul-11 Aug-11 Sep-11 Oct-11 Nov-11 Dec-11 Jan-12 Feb-12
(Rs/kWh) WEEKLY CONTRACTS
Through Term Ahead Market through Power Exchange
(Rs/kWh) DAY AHEAD CONTIGENCY CONTRACTS
Through Term Ahead Market through Power Exchange
(Rs/kWh) DAILY CONTRACTS
Through Term Ahead Market through Power Exchange
(Rs/kWh) INTRA DAY CONTRACTS
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10
12
14
Directly Through Power Exchange (Rs/kWh)
Through Term Ahead Market through Power Exchange
(Rs/kWh) WEEKLY CONTRACTS
0
2
4
6
8
Jan-11 Feb-11 Mar-11 Apr-11 May-11 Jun-11 Jul-11 Aug-11 Sep-11 Oct-11 Nov-11 Dec-11 Jan-12 Feb-12
Through Term Ahead Market through Power Exchange
(Rs/kWh) DAY AHEAD CONTIGENCY CONTRACTS
Through Term Ahead Market through Power Exchange
(Rs/kWh) DAILY CONTRACTS
Through Term Ahead Market through Power Exchange
(Rs/kWh) INTRA DAY CONTRACTS
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� Power through direct trading from power
exchange is lowest.
� Cost of power increases as we proceed from
weekly, day-ahead, daily to intraday in PXsweekly, day-ahead, daily to intraday in PXs
trading.
� The cost is more when there is higher system
contingency and vice-versa.
� Cost of power through PXIL is more compared
to IEX.
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� Direct trading through IEX is cheaper.
� Price of weekly contracts for electricity trading is
low for PXIL compared to IEX in winter (oct-feb).
� For summer season it has a varied trend.� For summer season it has a varied trend.
� Non uniformity of market in other types of
contracts
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6
7
8
Weighted Average Price of electricity transacted
Through UI (Rs/kWh)
NEW
0
1
2
3
4
5
Rs/k
Wh
NEW
Grid
SR Grid
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� The Price of electricity traded through UI is lower
in NEW grid and higher in SW grid in Jan-June
Period.
� Lower cost in .SR grid in the rest of the month.� Lower cost in .SR grid in the rest of the month.
� The price of UI in SR Grid is more as it is a
power deficit region.
� The synchronization of SR to NEW grid will
reduce the overall price vector of UI in NEWS
grid.
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� Evacuation Problem
� Intra State open access issues
� Contingency Problem
� Existence of Two Grids� Existence of Two Grids
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� Strengthening the upstream and down stream
transmission networks to better utilize the
existing Inter-regional transmission capacity.
� Increased Number of Power exchanges.� Increased Number of Power exchanges.
� Reduction in T/D Losses by Strengthening of old
Lines.
� Increasing the ATC/TTC margin of the available
lines using Reactors, FSC, TCSC and optimal
placement of phase shift transformer
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� Real time dynamic loadility with the introduction
of PMU technology.
� market rules should be such as to encourage
broad participation and ensure fairnessbroad participation and ensure fairness
� Introduction of Ancillary Services.
� Renewable Integration with the Grid.
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� 1. www.cercind.gov.in
� 2. www.cea.nic.in
� 3. “Consultation Paper on Modifications in Power Market Design: Evening Market, 15
minute Bidding time block and Ancillary market on Power Exchange” by CERC
� 4. “The India Electricity market outlook” by KPMG � 4. “The India Electricity market outlook” by KPMG
� 5. “Ancillary Services in Indian Context: An Approach Paper” by POSOCO.
� 6. “High capacity power Transmission corridor - Project inception report” by PGCIL
� 7. “The Indian Electricity Market: Country Study and Investment Context” by Peter M
Lamb
� 8. “Electricity Market Reform: Lessons for developing countries” by Erkan Erdogdu
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Questions
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