Availability-based Tariff - Scheduling

Scheduling

• Each day of 24 hrs starting from 00.00 hours be divided into 96 time blocks of 15 minutes each.
• Each generating station is to make advance declaration of its capacity for generation in terms of MWh delivery ex-bus for each time block of the next day. In addition, the total ex-bus MWh which can actually be delivered during the day will also be declared in case of hydro stations. These shall constitute the basis of generation scheduling.
• While declaring the capability, the generator should ensure that the capability during peak hours is not less than that during other hours.
• The Scheduling as referred to above should be in accordance with the operating procedures in force.
• Based on the above declaration, the Regional Load Dispatch Centre(RLDC) shall communicate to the various beneficiaries their respective shares of the available capability.
• After the beneficiaries give their requisition for power based on the generation schedules, the RLDC shall prepare the generation schedules and drawal schedules for each time block after taking into account technical limitations and transmission constraints.
• The schedule of actual generation shall be quantified on ex-bus basis, whereas for beneficiaries, scheduled drawals shall be quantified at their respective receiving points.
• For calculating the drawal schedule for beneficiaries, the transmission losses shall be apportioned in proportion to their drawals.
• In case of any forced outage of a unit, or in case of any transmission bottleneck, RLDC will revise the schedules. The revised schedules will become effective from the 4th time block, counting the time block in which the revision is advised by the generator, to be the 1st one.
• It is also permissible for the generators and the beneficiaries to revise their schedules during a day, but any such revisions shall be effective only from the 6th time block reckoned in the manner as already stated.