1 K.N. Toosi University of Technology, Iran

2 Professor, K.N. Toosi University of Technology, Iran


Conventional passive distribution networks are changing to modern active distribution networks which are not radial.
Conventional load flow methods should be modified for new distribution networks analysis. In modern distribution networks
distributed generation (DG) units are embedded with conventional and/or renewable resources. DG units are generally modeled
as PV or PQ nodes which inject active power electricity to the network. Modeling of a DG unit is dependent on the operation and
its type of connection to the grid. This paper considers the most important new load flow methods for DG integrated distribution
networks. The methods are analyzed and compared with each other. Every method has advantages and disadvantages in different
conditions. So, comparison of these methods can be useful to select the best method for a typical network. As a result, some
suggestions are proposed to apply the new methods.


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