Resilience Enhancement Method Against Persistent Extreme Weather With Low Temperatures in Self-Sustained Highway Transportation Energy System
Fangjian Chen, Mingchao Xia, Qifang Chen, Liu Yang
Abstract
Self-sustained highway transportation energy system (SHTES) means an integrated system that combines multi-energy planning, conversion, control and operation to achieve self-sustained highway transportation energy supply in the context of energy-transportation nexus, which can make full use of renewable natural resources along the highway and reduce operating costs. However, extreme weather and natural disaster may damage the infrastructure of SHTES, seriously threatening the reliable energy supply of multi-energy load. A resilience-oriented strategy is proposed in this article, which aims at strengthening the ability of SHTES against the sustained extreme weather with low temperatures. Firstly, a special SHTES structure including energy router is formulated to improve energy efficiency and reduce carbon emission. Then, taking the freezing rain disaster as an example, we propose a two-stage resilience enhancement method. In the first stage, the pre-disaster proactive preparedness is taken to support the operation of the SHTES in disaster. In the second stage, the uncertain system topology state transition driven by the evolution of disasters can be modeled as a Markov process to help highway transportation energy management center (HTEMC) make decisions with a view of foresight. Specifically, the state transition probability matrix can be calculated by the weather information-based component fault model. The simulation results indicate that the proposed method can soften the impact of persistent extreme weather with low temperatures and effectively enhance the resilience of the SHTES.