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Cascading Failure Propagation Simulation in Integrated Electricity and Natural gas Systems

Journal of Modern Power Systems and Clean Energy 2020年第5期8卷 961-970页

作者： Zhejing Bao Qihong Zhang Lei Wu Dawei Chen College of Electrical Engineering Zhejiang UniversityHangzhou 310027China Department of Electrical and Computer Engineering Stevens Institute of TechnologyHobokenNJ 07901USA

The sharp increase in the total installed capacity of natural gas generators has intensified the dynamic interaction between the electricity and natural gas systems,which could induce cascading failure propagation across the two systems that deserves intensive *** the distinct time response behaviors of the two systems,this paper discusses an integrated simulation approach to simulate the cascading failure propagation process of integrated electricity and natural gas systems(IEGSs).On one hand,considering instantaneous re-distribution of power flows after the occurrence of disturbance or failure,the steady-state AC power flow model is *** the other hand,gas transmission dynamics are represented by dynamic model to capture the details of its transition *** interactions between the two systems,intensified by energy coupling components(such as gas-fired generator and electricity-driven gas compressor)as well as the switching among the operation modes of compressors during the cascading failure propagation process,are *** IEGS composed of the IEEE 30-bus electricity system and a 14-node 15-pipeline gas system is established to illustrate the effectiveness of the proposed simulation approach,in which two energy sub-systems are coupled by compressor and gas-fired *** results clearly demonstrate that heterogeneous interactions between electricity and gas systems would trigger the cascading failure propagation between the two coupling systems.

关键词： Cascading failure propagation integrated electricity and natural gas system(IEGS) gas compressor transmission dynamics

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