Modelling SCADA and Corporate Network of a Medium Voltage Power Grid under Cyber Attacks

This article presents an analysis of the reliability of the power grid using data on the failure rate of the medium voltage (MV) power grid from the last five years. The analysis of the state of the power grid was based on the data provided by the grid operator. The purpose of this article is to analyze the reliability assessment of the medium voltage (MV) power connections using various analytical methods, a simulation model and reliability indicators. The analysis was performed based on the defined categories of power outages in terms of their duration. This made it possible to determine the energy quality indicators in a selected power grid. Then, a more complex analysis was carried out to assess the convergence of the applied analytical models of reliability assessment with the actual results obtained for the power grid. Moreover, using ANSYS Multiphysics, a numerical model of the cable head was developed to analyze the processes taking place in this element of the power grid for various exploitation cases.

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Analysing smart power grid against different cyber attacks on SCADA system

International Journal of Innovative Computing and Applications ◽

10.1504/ijica.2021.116656 ◽

2021 ◽

Vol 12 (4) ◽

pp. 195

Author(s):

Tafseer Akhtar ◽

B.B. Gupta

Keyword(s):

Power Grid ◽

Cyber Attacks ◽

Smart Power ◽

Scada System ◽

Smart Power Grid

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Smart Grid Virtualisation for Grid-Based Routing

Electronics ◽

10.3390/electronics9111879 ◽

2020 ◽

Vol 9 (11) ◽

pp. 1879

Author(s):

Armin Veichtlbauer ◽

Alexander Heinisch ◽

Ferdinand von von Tüllenburg ◽

Peter Dorfinger ◽

Oliver Langthaler ◽

...

Keyword(s):

Electric Vehicles ◽

Smart Grids ◽

Power Grid ◽

Electrical Power ◽

Electrical Energy ◽

Communication Infrastructure ◽

Medium Voltage ◽

Heating And Cooling ◽

Correct Data ◽

Load Impact

Due to changed power consumption patterns, technological advance and deregulation, the appearance of the power grid in the low and medium voltage segment has changed. The spread of heating and cooling with electrical energy and an increase of electric vehicles as well as the broad rollout of photovoltaic systems has a major impact on the peak power demand of modern households and the volatility smart grids have to face. Thus, besides the load impact of the growing population of electric vehicles, modern households are not only consumers of electrical power, but also power producers, so called prosumers. The rising number of prosumers and the limitations of grid capacities lead to an increasingly distributed system of heterogeneous components, which have to be managed and operated with locality and scalability in mind. Virtualisation technologies, particularly known as state of the art in data centre computing, can lead to a paradigm shift needed to meet the growing demands of this evolution. A key issue here is to forward data to the correct data sinks, where data are required in order to keep the grid balanced. This routing process has to be able to react on grid changes in a timely manner, i.e., it must be based on the instantaneous state of the grid. In this paper, we propose a solution based on virtualising the communication infrastructure in the low and medium voltage grid. We evaluate two different approaches. The first approach is based on SDN; an ONOS SDN controller is used to change the behaviour of the communication infrastructure according to information provided by components of the power grid. The second approach uses Coaty and a Mosquitto MQTT broker to deliver messages to the desired endpoint, again based on information from the power grid.

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