  Electric power and natural gas systems are becoming increasingly
interdependent, driven by the growth of natural gas-fired generation and the
electrification of the gas industry. Recent energy crises have underscored the
urgent need for enhanced resilience in these interdependent systems. In
response to this challenge, this paper focuses on the interdependent electric
power and natural gas distribution systems and proposes a comprehensive
strategy for enhancing their resilience, which involves optimally coordinating
various resources encompassing emergency operation and maintenance (O&M) and
logistical support, to efficiently restore damaged services and infrastructure.
Specifically, generators, including those with fuel switching capability, are
dispatched to provide emergency power, with the logistical process of fuel
supply being particularly managed by coordinated scheduling of mobile fuel
tankers. Additionally, integrated demand responses for power and gas are
dispatched to alleviate operational stresses using a zonewise approach that
groups customers with intertwined energy supplies into individual, dispatchable
units. Furthermore, the strategy incorporates the repair of damaged facilities,
with particular consideration given to the varying repair efficiencies
dependent on the dispatched repair units, aiming to closely simulate actual
repair scenarios. The strategy is encapsulated in a mixed-integer second-order
cone programming model, with case studies conducted to validate its
effectiveness.
