The IEC 61850 Sampled Measured Values Protocol: Analysis, Threat Identification, and Feasibility of Using NN Forecasters to Detect Spoofed Packets

被引:24
作者
El Hariri, Mohamad [1 ]
Harmon, Eric [1 ]
Youssef, Tarek [2 ]
Saleh, Mahmoud [3 ]
Habib, Hany [1 ]
Mohammed, Osama [1 ]
机构
[1] Florida Int Univ, Dept Elect & Comp Engn, Miami, FL 33174 USA
[2] Univ West Florida, Dept Elect & Comp Engn, Pensacola, FL 32514 USA
[3] Florida Polytech Univ, Dept Elect & Comp Engn, Lakeland, FL 33805 USA
关键词
artificial intelligence; attack detection; cyber security; microgrid; process bus; IEC; 61850; sampled measured values; neural networks; forecasting; message spoofing; INTRUSION DETECTION SYSTEM;
D O I
10.3390/en12193731
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
The operation of the smart grid is anticipated to rely profoundly on distributed microprocessor-based control. Therefore, interoperability standards are needed to address the heterogeneous nature of the smart grid data. Since the IEC 61850 emerged as a wide-spread interoperability standard widely accepted by the industry, the Sampled Measured Values method has been used to communicate digitized voltage and current measurements. Realizing that current and voltage measurements (i.e., feedback measurements) are necessary for reliable and secure noperation of the power grid, firstly, this manuscript provides a detailed analysis of the Sampled Measured Values protocol emphasizing its advantages, then, it identifies vulnerabilities in this protocol and explains the cyber threats associated to these vulnerabilities. Secondly, current efforts to mitigate these vulnerabilities are outlined and the feasibility of using neural network forecasters to detect spoofed sampled values is investigated. It was shown that although such forecasters have high spoofed data detection accuracy, they are prone to the accumulation of forecasting error. Accordingly, this paper also proposes an algorithm to detect the accumulation of the forecasting error based on lightweight statistical indicators. The effectiveness of the proposed methods is experimentally verified in a laboratory-scale smart grid testbed.
引用
收藏
页数:24
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