Impact Analysis of Seismic Events On Integrated Electricity and Natural Gas Systems

Yichen Shen, Chenghong Gu, Xinhe Yang, Pengfei Zhao

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Abstract

Seismic events can cause devastating impacts on both overground and underground energy system infrastructure. This paper proposes a methodology to evaluate the impact of seismic events on the security of integrated electricity and gas system, mainly focusing on pipelines leakage and connection loss of electricity transmission lines. A stochastic model is used to formulate the damage level based on earthquake severity. The seismic impact on the integrated system is classified according to the levels of pipe leak and electricity line failure. Load curtailment due to limited generation capacity and overloaded transmission lines is thereafter quantified. Seismic intensity is generated randomly based on Monte Carlo simulation so that a certain seismic intensity can be related to relevant load curtailment. An integrated energy system with a 30-busbar electricity system and a 6-node natural gas network is used to demonstrate the effectiveness of the proposed method. The results clearly illustrate damage consequences under seismic events in terms of both probability and severity levels. This work can inform resilience enhancement scheme design based on the vulnerability performance and impact of both systems.
Original languageEnglish
Article number9169856
Pages (from-to)1923-1931
Number of pages9
JournalIEEE Transactions on Power Delivery
Volume36
Issue number4
Early online date17 Aug 2020
DOIs
Publication statusPublished - 31 Aug 2021

Keywords

  • Integrated electricity and gas system
  • Pipe leak
  • Seismic damage
  • transmission line outage

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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