A COMPUTATIONAL COMPARISON OF STEADY-STATE LOAD SHEDDING APPROACHES IN ELECTRIC-POWER SYSTEMS

This paper presents a formulation of the optimal steady state load she dding problem that uses the sum of the squares of the difference betwe en the connected active and the reactive load and the supplied active and reactive power. The latter are treated as dependent variables mode lled as functions of bus voltages only. An investigation of the perfor mance of the proposed algorithm over a range of generation deficits as well as overload conditions is presented. Testing is done using IEEE 14, 30, 57, and 118 bus power systems, representing small and medium p ower systems. The optimal results are compared with results obtained u sing two earlier approaches. The results obtained using the proposed a pproach appear to give a better optimal state of the power system.