Coordinated RegionalDistrict Operation of Integrated Energy Systems for Resilience Enhancement in Natural Disasters This paper proposes a coordinated regionaldistrict operation of integrated energy system (IES) for enhancing resilience in extreme conditions. A bidirectional flow model is established for regionaldistrict IES with the utilization of powertogas technologies which shows how regional and district IES can jointly enhance the IES resilience. The regional IES cooptimizes power grid and natural gas networks, while the district IES coordinates the energy conversion and storage facilities. The district IES is modeled as an energy hub which supplies electricity to the regional IES. A trilevel twostage robust model is established to accommodate random outages caused by natural disasters in both natural gas and electricity generation and delivery systems. A twolevel algorithm which utilizes Benders decomposition and columnandconstraint generation algorithms is proposed to solve the proposed robust IES problem. Numerical results tested on a 6bus electrical xe2x80x94 6node natural gas system and a modified IEEE RTS79 40node natural gas system show the effectiveness of the proposed model and solution technique for enhancing the IES resilience.

Transportable Energy Storage for More Resilient Distribution Systems with Multiple Microgrids Transportable energy storage systems (TESSs) have great potential to enhance resilience of distribution systems (DS) against large area blackouts. A joint postdisaster restoration scheme for TESS and generation scheduling in microgrids (MGs) and network reconfigurations is proposed to minimize the total system cost including customer interruption cost, generation cost, and TESS related costs. A temporalspatial TESS model which is related to both transportation networks and DSs is proposed to represent the difference between TESS and ESS in terms of flexibility and cost reduction of ESS sharing among MGs. The proposed restoration problem is formulated as a mixedinteger linear programming with considering various network and TESS constraints. The proposed model and scheme are tested in a modified 33bus test system with 3 MGs and 4 TESSs. The results verify that a distribution system with TESS is more resilient compared with conventional ESS because of the benefit from total cost reduction.