Section 5(1) in Rajasthan Electricity Regulatory Commission (Transmission Licensee's Standards of Performance) Regulations, 2004
(1)System availability of a sub-station feeding power to a Distribution Licensee is to be determined according to the following formula:% System Availability of nth sub-station = (al + a2 + a3 +... + an)/N where al, a2, a3, ... an is the % availability in 1, 2, 3, . . .n th hour.N is the number of hours in the period, which for one year shall be equal to 8760.If a sub-station is Off due to State Load Despatch Centre (SLDC) emergency instructions or the supply to Distribution Licencee is kept Off for not adhering to the Connection Condition or Distribution Licencee System is faulty then such period shall not be considered as non-available for system availability computations. If licencee on account of any transmission system constraint unable to meet, the demand and kW or energy drawal is restricted then the sub-station availability for that hour shall be equal to 100-percentage specified restriction. It is clarified that the constraint of transformer capacity limitation of CT ratio or bus bar or other bay constraints shall be applicable for HV lines at the point of interconnection with RVPN's system.
