Research And Application Of The Algorithm Of Load Flow Based On Current-Injection Model

The algorithm based on current-injection method has the same second-order convergence quality as the Newton-Laphson algorithm,and it has improved the rate of iteration process.This paper deduced the current-injection model in details after an introduction of many other load flow algorithms both in transmission system and distribution system.After building the model of three-phase system,the algorithm based on current-injection method has been extended to three-phase system,so it can be used in three-phase distribution system.Through a number of samples, compare this algorithm with other algorithms and analyze their advantage and disadvantage.In the Anshan distribution system,we used Gauss-Seidel method as the main algorithm of load flow,and current-injection method as the accessorial algorithm.Based on the real data,analyzed the factors who affect the line loss of this system,and gave some advice for reducing line loss.All that have showed the significance of the three-phase load flow.