Abstract

PENUELA MENESES, CESAR AUGUSTO; GRANADA ECHEVERRI, MAURICIO  and  SANCHES MANTOVANI, JOSÉ ROBERTO. ALGORITHM FOR PROBABILISTIC ANALYSIS OF DISTRIBUTION SYSTEMS WITH DISTRIBUTED GENERATION. Dyna rev.fac.nac.minas [online]. 2011, vol.78, n.169, pp.79-87. ISSN 0012-7353.

In this paper an efficient algorithm for probabilistic analysis of unbalanced three-phase weakly-meshed distribution systems is presented. This algorithm uses the technique of Two-Point Estimate Method for calculating the probabilistic behavior of the system random variables. Additionally, the deterministic analysis of the state variables is performed by means of a Compensation-Based Radial Load Flow (CBRLF). Such load flow efficiently exploits the topological characteristics of the network. To deal with distributed generation, a strategy to incorporate a simplified model of a generator in the CBRLF is proposed. Thus, depending on the type of control and generator operation conditions, the node with distributed generation can be modeled either as a PV or PQ node. To validate the efficiency of the proposed algorithm, the IEEE 37 bus test system is used. The probabilistic results are compared with those obtained using the Monte Carlo method.

Keywords : Power flow; three-phase systems; distribution; probabilistic; weakly meshed systems; distributed generation.

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