TITLE:
An Algorithm for Optimal Firewall Placement in IEC61850 Substations
AUTHORS:
Hermes Eslava, Luis Alejandro Rojas, Danny Pineda
KEYWORDS:
Firewall, Security, Substations, Electric Power, IEC61850
JOURNAL NAME:
Journal of Power and Energy Engineering,
Vol.3 No.4,
April
13,
2015
ABSTRACT: Recently, most electric power substations
have adopted production control systems, such as SCADA systems, which
communicate with field devices and remotely control processes from a computer
screen. However, these systems together with protection measures and additional
control actions (using protocol IEC61850) seem not to be enough to free substations
of security attacks (e.g. virus, intruders, forgery or unauthorized data
manipulation). This paper analyzes the main features of an electric power
substation together with the aspects that might be significantly affected by cyber-attacks.
The paper also presents the implementation of a specific security system (i.e.
firewall-wise system) intended to protect a target distribution network.