ABT / IEGC CLAUSES

While making or revising their declaration of capability, the generator shall ensure that their declared capability during peak hours is not less than that during other hours.

ABTSchedule-I Para 3 (iii) (Page iii)

Capability Declaration during Peak hours:

ABT / IEGC CLAUSES

 The generating units operating at about 100% of their MCR shall be capable of (and shall not be prevented from ) going at least up to 105% of their MCR when frequency falls suddenly.

IEGC Chapter-6, Para 6.2(g) (Page 6.2)

Generation beyond DC

ABT / IEGC CLAUSES

ABTSchedule-I Para 4(ii) (Page v)

SOC for Thermal Stations shall be the DC, with all before-the-fact revisions / updating. The declared capacity shall not exceed the installed capacity. 

Generation beyond DC

ABT / IEGC CLAUSES

In case it is observed that the declaration of its capability by the generator is on lower side and the actual generation is more than DC, then UI charges due to the generator on account of such extra generation shall be reduced to zero and the amount shall be credited towards UI account of beneficiaries in the ratio of their capacity share in the station.

 

ABT Schedule-1 Para-6 (Page vi)

Generation beyond DC

ABT / IEGC CLAUSES

In case of gas turbine / combined cycle stations, the generator shall give DC for units / modules on gas fuel and DC for units / modules on liquid fuel separately.

ABT Schedule-I Para 4(Note 1)(Page v)

Separate Schedules for Gas/Liquid

ABT / IEGC CLAUSES

 RLDC may direct the SLDCs/ ISGS to increase/decrease their drawal / generation in case of contingencies e.g. overloading of lines / transformers, abnormal voltages, threat to system security.

IEGCChapter-7Para 7.4.9(Page-7.3)

Revision of Schedules initiated by RLDCs

ABT / IEGC CLAUSES

 RLDC may revise the schedule in the interest of better system operation w.e.f 4th time block.

ABTSchedule-1Para-3(xv)

Revision of Schedules initiated by RLDCs

ABT / IEGC CLAUSES

Revision of declared capability by generator (s) and requisition by beneficiary(ies) for the remaining period of the day will also be permitted with advance notice. Revised schedules / declared capability in such cases shall become effective from the 6th time block, counting the time block in which the request for revision has been received in RLDC to be the first one. 

ABT Schedule-1 Para (xiv) (Page (iv)

Revision of schedules at the request of Generators/States

ABT / IEGC CLAUSES

While finalising the above daily generation schedules for the ISGS, RLDC shall ensure that the same are operationally reasonable, particularly in terms of ramping-up/ramping- down rates and the ratio between minimum and maximum generation levels. 

IEGCChapter-7Para 7.5.7(Page 7.5)

Ramping-up/Ramping-down

ABT / IEGC CLAUSES

The Regional Load Despatch Centre may give such directions and exercise such supervision and control as may be required for ensuring integrated grid operations and for achieving the maximum economy and efficiency in the operation of the power system in the region under its control

IEGC Chapter-2Para 2.2. (2)(Page 2-1)

Integrated Grid Operations and Economey

ABT / IEGC CLAUSES

The primary objective of integrated operation of the Regional grids is to enhance the overall operational economy and reliability of the entire electric power network spread over the geographical area of the interconnected States. Participant utilities shall co-operate with each other and adopt Good Utility Practice at all times for satisfactory and beneficial operation of the Regional grid.

IEGCChapter-6Para 6.1 (a) (Page 6-1)

Integrated Grid Operations and Economey

ABT / IEGC CLAUSES

IEGC Chapter 2Para2.6(1)(Page 2-4)

Subject to the provisions of sub-section 55(3) of the Act, State Load Despatch Centre in a State may give such directions and exercise such supervision and control as may be required for ensuring the integrated grid operations and for achieving the maximum economy and efficiency in the operation of the power system in that State.

Integrated Grid Operations and Economey

ABT / IEGC CLAUSES

The system of each State shall be treated and operated as a notional (flexible) control area. The summation of scheduled drawal from ISGS and any bilateral inter-change shall provide the drawal schedule of each State, and this shall be determined in advance on daily basis.

IEGC Chapter-7Para 7.4 (2) (Page 7-2)

Integrated Grid Operations and Economey

ABT / IEGC CLAUSES

The Regional grids shall be operated as loose power pools in which the States shall have full operational autonomy, and SLDCs shall have the total responsibility for-

i) scheduling / despatching their own generation (including the generation of their captive licensees),  (ii) regulating the demand of their customers,  (iii) scheduling their drawal from the ISGS (within their shares in the respective plant’s capability), (iv) arranging any bilateral interchanges, and  (v) regulating their net drawal from the regional grid as per agreed guidelines.

IEGCChapter-7Para 7.4 (1)(Page 7-1)

Integrated Grid Operations and Economey

ABT / IEGC CLAUSES

Based on the requisitions given by the beneficiaries and taking into account technical limitations on varying the generation and also taking into account transmission system constraints, if any, RLDC shall prepare the economically optimal generation schedules.

ABT SchedulePara 3 (vi) (Page iii)

Integrated Grid Operations and Economey