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JEET, Vol. 13, No. 2, March 2018 
Active Distribution Network Expansion Planning Considering Distributed Generation Integration and Network Reconfiguration
Haijun Xing 
Area 
A  Electric Power Engineering 
Abstract 
This paper proposes the method of active distribution network expansion planning
considering distributed generation integration and distribution network reconfiguration. The distribution
network reconfiguration is taken as the expansion planning alternative with zero investment cost of the
branches. During the process of the reconfiguration in expansion planning, all the branches are taken
as the alternative branches. The objective is to minimize the total costs of the distribution network in
the planning period. The expansion alternatives such as active management, new lines, new
substations, substation expansion and Distributed Generation (DG) installation are considered.
Distribution network reconfiguration is a complex mixedinteger nonlinear programming problem,
with integration of DGs and active managements, the active distribution network expansion planning
considering distribution network reconfiguration becomes much more complex. This paper converts
the duallevel expansion model to SecondOrder Cone Programming (SOCP) model, which can be
solved with commercial solver GUROBI. The proposed model and method are tested on the modified
IEEE 33bus system and Portugal 54bus system. 
Keyword 
Active distribution network,Distributed generation,Distribution network expansion planning,Network reconfiguration

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