Coordinated multi?stage expansion planning of transmission system and integrated electrical, heating, and cooling distribution systems

The rapid development of different energy production and conversion technologies at the distribution system (DS) level facilitates integration electrical, heating, cooling DSs. planning operation integrated DSs will affect asset management transmission (TS), which in turn change electrical prices investment decisions DS level. This paper addresses a tri-level multi-stage approach for coordinated expansion TS heating photo voltaic panels (PVs), wind turbines (WTs), combined heat power generation (CHP) units, boilers, absorption chillers are considered candidates coupling Moreover, lines, feeders,and pipelines into proposed model. discussed model is tested on modified 6-bus, 30-bus, 118 bus IEEE comprising numerical study proves that operators (DSOs), connected to nodes TS, reduce their emissioncosts by investing resources. scheme successfully reduces total expected cost operator (TSO) postpones TS.