Abstract

The high penetration of volatile distributed gen-erators (DGs) results in several serious operation problems in active distribution network (ADN). As one of the flexible controllable resources of ADN, energy storage system (ESS) can effectively smooth the fast system fluctuation from DGs. The operational flexibility of distribution networks can be significantly enhanced by utilizing the fast regulation abilities of ESS. Based on the Monte Carlo simulation, this paper evaluates the improvement of DG penetration in ADNs with the quantified operational flexibility of ESS integration. Case studies are conducted based on the modified IEEE 33-node system. By accurately adjusting the charge and discharge power of ESS in the multiple periods, the hosting capacity of DG can be greatly enhanced in ADNs.

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