In this paper, a new efficient method is proposed for power flow calculation in radial distribution systems. The distribution busines is changing the need to plan and respond to technical change, growth in distributed generation and deregulated power markets. Thus, it is important to improve fundamental analytical tools in distribution systems. This paper proposes a new method for the power flow calculation in distribution systems. The Newton-Raphson method does not work in some distribution systems. As a result, DistFlow that focuses on the network topology was developed to overcome the problem. However, there is still room for improvement in terms of computational efficiency. In this paper, a method is proposed to improve the efficiency in creating the Jacobian.
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