ATC assessment and enhancement of integrated transmission and distribution system considering the impact of active distribution network

Abstract

Assessment and enhancement of transmission network capability have been one of the prime interests of powersystem monitoring, operation and control. Conventionally, the issue of available transfer capability (ATC) assessment has beentackled considering the transmission and distribution networks as segregated entities because they had little or no influence oneach other's performance owing to the unidirectional flow of power from the transmission to distribution networks. Now, withincreasing interest in smart transmission and distribution in amalgamation with a paradigm shift in sources of generation fromcentralised to decentralised even at distribution levels mandating the analysis of power grid while inculcating both thehierarchies simultaneously. In this study, a platform for quasi-static operation of power transmission and distribution networks,employing a multi-agent based system has been developed. The developed multi-agent systembased system has been utilisedfor assessment of ATC considering active distribution network (ADN) whereby Modified IEEE 24 bus system at transmission andModified IEEE 123 node system at distribution level has been considered as a test system. It has been observed that thepresence of ADN considerably affects the ATC of the system.