Cost-effective WAMS infrastructure deployment for cyber-physical resiliency enhancement

Abstract

This paper proposes a new combinatorial technique for Wide Area Measurement System (WAMS) infrastructure deployment for cyber physical resiliency enhancement. A meaningful optimal placement of Phasor Measurement Unit (PMU) for substation oriented complete system observability and Phasor Data concentrator (PDC) have been ensured proposing new method for solving Integer Linear Programming (ILP) using General Algebraic Modelling Language (GAMS) platform. Critically important location vector have been formulated applying Multi Attribute Utility Technique (MAUT), which directs the PDC deployment location selection. However, only the optimal distribution of PMUs and PDCs throughout the network does not satisfy the purpose of these sophisticated yet costly measuring and monitoring devices; rather it is required to be ensured that the fast and precise measurements from this device can be reached to the generation and transmission operators via PDC through the shortest communication path. Hence, a shortest spanning path algorithm has been proposed for the minimization of the communication path among the WAMS elements. The proposed method has been extended while the cyber physical attack compromised device is present in the system. The empirical WAMS elements communication network has been modelled and executed in OMNeT++. The overall cost is calculated by considering some practical cost of the WAMS elements. The efficacy of the proposed technique is checked applying by it on standard IEEE test cases- IEEE 14 bus, 30 bus, and 118-bus system, and represented with post mortem analysis. Finally, to test the effectiveness of the proposed method the results have been compared to some well-established methods.

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