Elastic Operation of High Voltage Distribution Network for Urban Power Grid Robust Restoration Under Physical Attacks

As the urban electricity load increase during the decades, the safe operation of urban power grid (UPG) is becoming an important issue and is also the primary consideration of transmission system operators (TSO). However, natural disasters, human attacks and failures of electrical devices seriously jeopardize the regular service for electricity consumers. While high voltage distribution network (HVDN) owns high operational flexibility that can be reconfigured to build a new power supply path dynamically so as to recovery the electricity load. Hence this paper proposed an UPG robust restoration model that aiming at maximizing the restoration of load by HVDN line switching. All the physical constraints are modeled by the mixed integer second-order cone programming (MISOCP) method. A large-scale UPG test system in China was used to verify the effectiveness of the proposed method.