System Load Factor and Loss Load Factor (LF and LLF):
The annual load duration curve for the circle might be derived through aggregating the classic hourly spot reading of system power demand at grid substation(s) feeding the Distribution circle for classic working days and holidays in every month during the year. This would take into account the seasonal variations as well.
The system power losses are proportional to the square of the system load. An annual loss load duration curve might accordingly be derived from the load duration curve through squaring the ordinates. The load factor and loss load factor for the system might be computed from load duration and loss load duration curve, respectively.