Short Term Open Access in inter state transmission

transcript

Chandan Kumar

Emp.No: 02616

ET,WRLDC

Project Guide :

Shri. P. Pentayya

GM,WRLDC

� 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.

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

� Short term Open Access :It is for a period of up to 1 months

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 .

Indian Power Market

Jan 2011 - Feb 2012

Short Term Market Contribution 9% : 2009-10

10% :2010-11

10.75 % 2011-12 (As Projected)

Short Term market

LTOA and MTOA

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%

� 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

s) UNCONSTRAINED CLEAR

VOLUME IEX

ACTUAL CLEARED VOLUME

AND HENCE SCHEDULED IEX

UNCONSTRAINED CLEAR

VOLUME PXIL

ACTUAL CLEARED VOLUME

AND HENCE SCHEDULED PXIL

� 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

h) 'Weighted Average Price of electricity

transacted through Traders (Rs/kWh)

Weighed Average Price of electricity

transacted Through IEX (Rs/kWh)

Weighed Average Price of electricity

transacted Through PXIL (Rs/kWh)

� 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

Directly Through Power Exchange (Rs/kWh)

Through Term Ahead Market through Power Exchange

(Rs/kWh) WEEKLY CONTRACTS

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) DAY AHEAD CONTIGENCY CONTRACTS

(Rs/kWh) DAILY CONTRACTS

(Rs/kWh) INTRA DAY CONTRACTS

Directly Through Power Exchange (Rs/kWh)

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) DAY AHEAD CONTIGENCY CONTRACTS

(Rs/kWh) DAILY CONTRACTS

(Rs/kWh) INTRA DAY CONTRACTS

� 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.

� 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

Weighted Average Price of electricity transacted

Through UI (Rs/kWh)

SR Grid

� 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

� Evacuation Problem

� Intra State open access issues

� Contingency Problem

� Existence of Two Grids� Existence of Two Grids

� 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

� 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.

� 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

� 8. “Electricity Market Reform: Lessons for developing countries” by Erkan Erdogdu

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Short Term Open Access in inter state transmission

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