ITERATIVE
SOLUTION USING FAST DECOUPLED LOAD FLOW METHOD - ALGORITHM
Step 1: Assume a
suitable solution for all buses except the slack bus. Let Vp =1+j0 for P=2,3,...................n and V=a+j0
Step2: Set the
convergence criterion = ε0
Step3: Set
iteration count K = 0
Step 4: Set bus
count P = 2
Step 5:
Calculate Pp and Qp using
Step 6: Compute
the real and reactive power mismatches ΔPK and ΔQK. If the mismatches Are with in desirable tolerance the iteration end
Step 7:
Normalize the mismatches by dividing each entry by its respective bus voltage
magnitude
ΔPK =ΔP 2K / V 2K
Step 8: Solve
for the voltage magnitude and the correction factors ΔVK and δK by using the constant matrices B’ and B” which are extracted from the bus
admittance matrix Y Bus
[B’] δK = ΔPK
[B”]ΔQK =
ΔQK
Step 9: Up date
the voltage magnitude and angel vectors
δK+1 = δK +ΔδK
VK+1
= VK +ΔVK
Step 10: Check
if all the buses are taken into account if yes go to next step otherwise go to next step. Otherwise go to step 4
Step 11: Advance
iteration count K = K+1 go to step 3
Step 12:
Evaluate bus and load powers and print the results
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