With the increase of scale of power systems and uncertainties

the computational burden of optimization and coordination of trajectory-driven load-shedding (TDLS) placement is aggravated. In consideration of the impact of load model uncertainty on computational burden and optimization accuracy

the feasibility of using the simplified load model in TDLS placement optimization is studied. Meanwhile

the current optimization and coordination algorithm of TDLS placement has been improved

including reducing iterations and the update frequency of sensitivity. Simulation results show that the simplified method doesn’t have significant impact on optimization accuracy. But

with greatly reduced computational burden

the method is readily applicable to engineering projects.This work is jointly supported by National Basic Research Program of China (973 Program) (No. 2013CB228204)

Australian Research Council Project (No. DP120101345)

NSFC-EPSRC Collaborative Project (No. NSFC-513111025-2013

No. EPSRC-EP／L001063／1)

and State Grid Corporation of China.