Optimal Operation Of Electro-pneumatic Coupling Model For Extreme Weather Events

Climate change has led to an increasing number of extreme weather events in recent years.These natural disasters can lead to serious infrastructure damages and even trigger massive power outages.The pressure of energy shortage and environmental problems push people to reflect on the existing energy consumption pattern,and begin to study the comprehensive utilization of different types of energy such as electricity,gas and heat,so as to improve all the energy system’s resilience when dealing with extreme weather events,which has the characteristics of small probability and large destructive.In this paper,an optimized operation system of power-gas coupling with energy hub as coupling element for extreme weather events and a two-stage optimized operation mode are proposed.The coupling power-gas optimization operation system includes natural gas distribution system,energy hub micro-grid system and power system network.The two-stage optimization operation mode,by optimizing the purchase,transmission and storage of energy in the energy hub and setting the priority of load,can effectively reduce the total operating cost and load reduction in the two stages,thus improving the system’s resilience when facing extreme weather events.When an extreme weather event occurs,the system will go through two stages.The first stage is the pre-disaster stage and the second stage is the one when disaster occurs.In these two different stages,the system will make relevant decisions including energy purchasement,conversion,distribution,storage and load curtailment.The case studies in this paper are run in MATLAB R2018a environment,solved by YALMIP toolbox and GUROBI solver.The simulation results show that the proposed model and the two-stage operation mode can effectively improve the stability and resilience of the whole energy system,and enhance its ability to resist extreme weather events.