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Engineering Review : International journal for publishing of original researches from the aspect of structural analysis, materials and new technologies in the field of mechanical engineering, shipbuilding, fundamental engineering sciences, computer sciences, electrical engin, Vol. 42 No. 2, 2022.

Original scientific paper

https://doi.org/10.30765/er.1891

Tie-line modelling in interconnected synchrophasor network for monitoring grid observability, cyber intrusion and reliability

Atul Kumar Yadav ; Department of Electrical Engineering, Sardar Vallabhbhai National Institute of Technology, Surat, India, 395007
Vasundhara Mahajan ; Department of Electrical Engineering, Sardar Vallabhbhai National Institute of Technology, Surat, India, 395007

Full text: english pdf 787 Kb

page 114-132

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Abstract

The incorporation of a tie-line between two areas may be beneficial in two ways. First, the reserve capacity of the assisting area support to the assisted area, and second, the number of Phasor Measurement Unit (PMU) requirements will become smaller for complete observability of the interconnected grid. The objective function is formulated to integrate the observability and reliability analysis for the two interconnected synchrophasor networks. The effect of Zero Injection Bus (ZIB) is included in the observability constraints to reduce the number of PMUs deployed in the system. The number of optimal PMU deployments will be greater for two interconnected systems in comparison with a single area. Therefore, interconnected systems become more vulnerable to cyber risk. The paper discusses the cumulative analysis of system observability and reliability during an anomaly situation that occurs with a PMU device due to a cyber-attack. The reliability indices Interconnected System Load Interruption Probability (ISLIP) and Interconnected System Demand Not Supplied (ISDNS) are evaluated when an anomaly occurs with optimally deployed PMU in the network by including and excluding the effect of ZIB. By doing so, the most reliable location for PMU deployment can be obtained for both the area. Reliability Test System (RTS)-24 bus is used for each area to modify the test system by incorporating tie-lines between them.

Keywords

interconnected system; ZIB; optimal PMU allocation; grid observability; reliability indices; cyber risk

Hrčak ID:

286596

URI

https://hrcak.srce.hr/286596

Publication date:

21.2.2022.

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