Vulnerability Identification and Evaluation of Interdependent Natural Gas-Electricity Systems
Vulnerability Identification and Evaluation of Interdependent Natural Gas-Electricity Systems
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DOI：
10.1109/tsg.2020.2968178
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发表时间：
2020-07
影响因子：
9.6
通讯作者：
Lu Nan;Lei Wu;Tianqi Liu;Yikui Liu;Chuan He
中科院分区：
文献类型：
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作者：
Lu Nan;Lei Wu;Tianqi Liu;Yikui Liu;Chuan He
天然气和电力系统的相互依赖性日益增强，在确定相互依赖系统的脆弱组成部分方面提出了迫切需要和新的挑战，由于相互依赖，这些组成部分可能与个别系统的组成部分有很大不同。提出了一种相互依赖的天然气-电力系统中脆弱部件的识别和排序方法。具体而言，构建了相互依赖系统的拓扑模型和脆弱性指数，提出了同时考虑拓扑脆弱性和功能脆弱性的脆弱性构件识别方法，对构件进行选择和排序。通过安全评估方法，对脆弱性部件识别方法进行定量评估，该方法计算脆弱性部件停用时的电力和天然气供需不平衡情况。6总线电/7节点燃气系统和改进的IEEE 118总线电/20节点燃气系统的数值结果表明了该方法的有效性。
The intensified interdependency of natural gas and electricity systems poses urgent needs and new challenges in identifying vulnerable components of the interdependent system, which could be significantly different from those of individual systems because of the interdependency. This paper proposes a method to identify and rank vulnerable components of interdependent natural gas-electricity systems. Specially, a topological model and the vulnerability index for the interdependent system are constructed, and vulnerable component identification method is put forward to select and rank components by simultaneously considering topological and functional vulnerabilities. The proposed vulnerable component identification method is quantitatively assessed via a security evaluation approach, which calculates electricity and gas supply-demand imbalance when the vulnerable components are out of service. Numerical results of a 6-bus electricity/7-node gas system and a modified IEEE 118-bus electricity/20-node gas system illustrate effectiveness of the proposed method.