期刊论文

Zhao, Yirui(yrzhao_sy@163.com)

中文

电力系统自动化

1000-1026

2023

47

8

25-33

10.7500/AEPS20221027003

Abstract:Withthewidedeploymentofcommunicationdevicesandthecontinuousdevelopmentofinformationtechnologies,the cyberriskfacedbythethenew powersystem cannotbeignored.Thispaperproposesanemergencyfaultscreeningmethod consideringcyberriskswhoseprocessisanattackerpenetratingthrougharemotemaintenanceconfigurationinterfaceprovidedby anequipmentvendorandthensendingcommandstocircuitbreakersthroughintelligentelectronicdevices(IEDs)tocausemultiple line trips. First, the generalized stochastic Petri net is adopted to model the dynamic process of the substation under cyber attack andcalculatethesteady-stateprobabilityofdifferentabnormalstatesinthesubstation.Then,adefinitionoftherisktopower systemsfromIEDcyberattacksisgiven,andatwo-layermixed-integernonlinearmodelisbuilttoscreenthesubstations,IEDs, and their controlled lines that are likely to be attacked. Finally, based on the dual theory and the combination of log-taking, piecewiselinearizationandotherlinearizationmethods,thetwo-layermodelistransformedintoasingle-layermixed-integerlinear optimizationmodelwhichcanbedirectlysolvedbythecommercialsolverGurobi.ThecaseanalysisresultsbasedonIEEERTS 24-bus system and IEEE 118-bus system validate the effectiveness of the proposed method, and prove that the classical N-K and probabilisticN-Ktwo-layermixed-integeroptimizationmodelsarenotsuitableforfaultscreeninginIEDcyber-attackscenarios. This work is supported by NationalNaturalScience Foundation ofChina (No.U1966207). Keywords:substationcyberattack;faultscreening;riskassessment;two-layermixed-integeroptimization;generalizedstochastic Petrinet

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随着通信设备的广泛部署以及信息技术的不断发展,新型电力系统所面临的网络风险不可忽视。考虑攻击者从设备商提供的远程维护配置接口侵入,继而通过智能电子设备(IED)向断路器发送命令导致多条线路跳闸的过程,提出一种考虑网络风险...展开更多 随着通信设备的广泛部署以及信息技术的不断发展,新型电力系统所面临的网络风险不可忽视。考虑攻击者从设备商提供的远程维护配置接口侵入,继而通过智能电子设备(IED)向断路器发送命令导致多条线路跳闸的过程,提出一种考虑网络风险的紧急故障筛选方法。首先,利用广义随机Petri网对变电站受到网络攻击的动态过程进行建模,计算变电站内不同异常状态的稳态概...

With the wide deployment of communication devices and the continuous development of information technologies, the cyber risk faced by the the new power system cannot be ignored. This paper proposes an emergency fault screening method considering cyber risks whose process is an attacker penetrating through a remote maintenance configuration interface provided by an equipment vendor and then sending commands to circuit breakers through intelligent electronic devices (IEDs) to cause multiple line trips. First, the generalized stochastic Petri net ...