Sustainable and Resilient Distribution Systems With Networked Microgrids Grid modernization calls for increasing requirements of electric grid operation with enhanced sustainability and resilience  1 . In particular, distribution grids serve as a critical venue to bridge bulk upstream transmission and generation systems and a large number of downstream end users on the customer side, playing a significant role in modern electric grids for multiple purposes (e.g., renewable energy integration, power flow distribution, and enduser power quality enhancement)  2 . Under a normal grid operation condition, the increasing penetration level of renewable energy sources imposes new challenges on conventional distribution grid infrastructure (e.g., protection malfunction  3  and voltage violation  4 ); on the other hand, in an extreme grid operation scenario, it is urgently needed to restore grid services after severe power outages, such as those caused by natural disasters  5 . In particular, for critical infrastructures, an efficient grid service restoration strategy should be implemented to avoid further damage over an extended period of time.

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.