We exploit the local loop dynamics calculated in prepotential formulation to compute the pertrubation expansion in the strong coupling limit of lattice gauge theory. A new exact simulation technique is developed to simulate all possible loop states on an infinite lattice using exact BFACF algorithm. This loop perturbation numerical calculations are free from any limitation on lattice size. Using this, we calculate the correction of string tension for SU(2) theory in 2+1 dimension upto order g64.