Optimal location for single and multiple DG based on vulnerability index in smart distribution system
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Sarkar, Koushik; Pang, ChengZong; Yang, Lin. 2017. Optimal location for single and multiple DG based on vulnerability index in smart distribution system. 2017 IEEE Power & Energy Society General Meeting
Power system is getting more complicated with the interconnection between distributed generation (DG) and distribution network. Demanding a wide network of vulnerability and operational effects requires advanced technical aspects assessment. In this paper, an Optimal Performance Index (OPI) is proposed with considering the real and reactive power output from DG units. This proposed OPI considered multi-objective indices, namely real and reactive power loss, fault current and voltage, voltage deviation, harmonic distortion, vulnerability for DG and bus with Vulnerability Index (VI). The test network is modeled as directed graph network formed from power flow method in Backward-Forward-Sweep algorithm. The topological significance of each node is derived from betweenness centrality to represent the weights. This expression determines the optimal location of DG in IEEE37 bus radial feeder with constant DG load model. Case studies include the OPI evaluation with single and multiple DG and the results are analyzed to validate the proposed model using OPAL-RT 5600 Real-time digital Simulator in MATLAB/Simulink environment.
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