Commercial points for 91st occ meeting
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Commercial Points for 91st OCC meeting. Tamil Nadu TN opened LC for Rs.8.49Cr only in lieu of Rs.32.84Cr LKPPL Rs.2.44 Lakhs Due to delay of wk40(31.12.12-06.01.13) UI payment. OPENING OF LC DUE TO DELAYED UI PAYMENT. CERC may issue suo-moto order any time.

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Commercial Points for 91st OCC meeting

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Commercial points for 91st occ meeting

Commercial Points for 91st OCC meeting


Commercial points for 91st occ meeting

Tamil Nadu

TN opened LC for Rs.8.49Cr only in lieu of Rs.32.84Cr

LKPPL

Rs.2.44 Lakhs Due to delay of wk40(31.12.12-06.01.13) UI payment

OPENING OF LC DUE TO DELAYED UI PAYMENT

CERC may issue suo-moto order any time


Number of instances of delay in weekly sem data receipt at srldc during december 2013

Number of Instances of delay in Weekly SEM data receipt at SRLDC during December 2013

In case not received in time,

SRLDC will be constrained to

approach higher Forum


Commercial points for 91st occ meeting

TIME DRIFT STATEMENT NOT RECEIVED from the following stations during December 13


Commercial points for 91st occ meeting

TIME DRIFT STATEMENT NOT RECEIVED from the following stations during December 13


Poc data for q4 of 2013 14 jan 14 mar 14

PoC Data for Q4 of 2013-14 (Jan’14-Mar’14)

All DICs have to furnish the node wise MW/MVAR data and Load –Generation data.

AP submitted Onlythe node-wise data

Henceforth all DICs are requested furnish the full data required for computations at least by two quarters in advance without waiting for reminders from NLDC.


Poc data for q1 of 2014 15 april 14 june14

PoC Data for Q1 of 2014-15 (April 14-June14)

All the DICs has to furnish

(1) the technical details of new transmission elements, generating units which are expected to commence commercial operation from April 14-June14

(2) Yearly Transmission charges

(3) node wise MW/MVAR and (4) forecast generation and demand data


Regulation 12 day ahead

Regulation 12: DAY-AHEAD

  • Applications received within 3 days prior to the day of Scheduling and up to 15:00 Hrs. of the day immediately preceding the day of scheduling shall be treated as same priority

  • Processing only after processing of the Collective Transactions of the Power Exchange (s)

  • Congestion Management – Pro-rata


Application for day ahead scheduling

Application for Day ahead scheduling

M1

M0

M2

M3

D-03

D0

Application

Processing time

Approval after Collective

Separate application for each transaction.


Regulation 13 contingency

Regulation 13: CONTINGENCY

  • Buying Utility/Trader on its behalf to make an Application to the Nodal RLDC

  • To be considered after 1500 hrs of the day immediately preceding the day of scheduling

  • In case of intra-day/same day –

    scheduling from 6th time block

  • Congestion Management – approve on first come basis


Process of declaring margins for px

Process of declaring margins for Px

  • For facilitating Collective Tx in Px, every morning by 10am, SRLDCs gives to NLDC the margin available in ER-SR, WR-SR and S1-S2 corridors for next day.

  • Similar action taken by ERLDC and WRLDC also for IR including ER-SR and WR-SR.

  • NLDC moderates the margins given by SRLDC,ERLDC and WRLDC and restricts to least of the two before giving to Px.


Congestion message by nldc

Congestion message by NLDC

  • If the requirement by Px is more than the Corridor declared by NLDC, then it is said that Congestion occured in PX

  • NLDC issues a message to RLDCs giving the details of Congestion in ER-SR, WR-SR or S1/S2 corridors if any

  • RLDC considers the above message while processing the DA/Conty STOA applications.

  • NLDC message advises to approve DA/Conty STOA only if any new margins are created which were not envisaged while declaring ATC in the morning.


Treatment of da conty applications in case of congestion

Treatment of DA/Conty Applications in case of Congestion

  • If there is congestion for the time blocks and corridors for which applications are made Check for the following events which were not factored in ATC declaration :

  • if any Line is restored in Congested Corridor

  • if any unit outage occurred in the Upstream network (Exporting area)

  • if any unit revival occurred in the Downstream network (Importing area)


Commercial points for 91st occ meeting

  • If any of the above criterion is observed, then SRLDC approves the Applications

  • Decision is made based on ATC declared for IR or S1/S2 corridors not on Real time line Flows

  • If line flows in the flow gate are within limits also, no STOA/ URS is approved.

  • Deviations in ATC vis-a-vis Real time line Flows in the Flow Gate may occur due to difference in LGBR projected for evaluating the ATC

  • Because the Line flows vary dynamically in Real time, STOA approvals are not issued even if Flow Gate is not violated.

  • DA/Conty are last category of STOAs after Adv/ FCFS / Px. They can be approved only to the extent of Residual margins without compromising the Grid Security


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