SUMMARYIn this paper, a new continuation power flow method is proposed to speed up computational time for drawing P-V curves in power systems. The continuation power flow calculation aims at successively evaluating power flow solutions in changing the nodal specified value of power flow calculation. The P-V curves are useful for static voltage instability. The conventional continuation power flow calculation methods are based on the predictor-corrector method. This paper proposes a new nonlinear predictor in the predictor-corrector method. The proposed method simultaneously evaluates a set of solution candidates through the nonlinear predictor. The effectiveness of the proposed method is demonstrated in sample systems.
A&stracl-This paper proposes a new Continuation power flow method for drawing a P-V curve at a node. The continuation power flow calculation plays a key role to understand the limitation of power flow solutions in varying loads. It is useful for evaluating the critical point of the P-V curve in static voltage stability. However, drawing the P-V curve is timeqonsuming in large-scale power systems. As a result, B sophisticated technique is requited to make the aIgoritbm more efficient in terms of step size and robustness of algorithm. In this paper, a hybrid continuation power flow method of linear and nonlinear predictors is proposed to speed up computational time in drawing the P-V curve. The proposed method Is successfully applied to the IEEE 118-node and 300-node systems.
In this paper, a new continuation power flow method is proposed to speed up computational time for drawing P-V curves in power systems. The continuation power flow calculation aims at successively evaluating power flow solutions in changing the nodal specified value of power flow calculation. The P-V curves are useful for static voltage instability. The conventional continuation power flow calculation methods are based on the predictor-corrector method. This paper proposes a new nonlinear predictor in the predictor-corrector method. The proposed method simultaneously evaluates a set of solutions candidates through the nonlinear predictor. The effectiveness of the proposed method is demonstrated in sample systems. P-V Keywords: continuation power flow, P-V curve, predictor-corrector method, nonlinear predictor, Lagrange's polynomial interpolation formula
1.P-V P-V P-V 1991(1) 0 P-V *
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