IEEE Power & Energy Magazine - March/April 2021 - 56

A Vision
to Enhance
Transmission
Security
The Case of Switzerland's
Power System

I

IT IS HARD TO IMAGINE LIFE WITHOUT ELECtricity. Electrical energy is constantly consumed to allow
humanity to carry out diverse activities ranging from charging mobile phones to controlling the flow of vehicles and
pedestrians with traffic lights. Due to its widespread usage
and significance, some people take the availability of
electric power for granted and expect that the lights will
always turn on when they turn on the switch. Nevertheless, when illuminating our rooms, we need to appreciate
that an extensive power system infrastructure is in place
to securely generate, transport, and distribute electrical
energy to our homes.

Electric power systems have been undergoing massive
changes over the last few decades. This includes the integration of high levels of small-scale energy resources in distribution grids, the electrification of transportation and heating/cooling sectors, higher volatility due to uncertain power
in-feed from renewable energy generation, the internationalization of energy markets, and increasing public opposition
to grid expansion, just to name a few. These changes make it
increasingly challenging to maintain the security of supply
in the power system.
Power system security is defined as the ability of the system to withstand sudden disturbances or unanticipated loss

By Evangelos Vrettos, Marc Hohmann,
and Marek Zima
Digital Object Identifier 10.1109/MPE.2020.3043567
Date of current version: 19 February 2021

56

ieee power & energy magazine

1540-7977/21©2021IEEE

march/april 2021



IEEE Power & Energy Magazine - March/April 2021

Table of Contents for the Digital Edition of IEEE Power & Energy Magazine - March/April 2021

Contents
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IEEE Power & Energy Magazine - March/April 2021 - Cover3
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