Home // International Journal On Advances in Intelligent Systems, volume 9, numbers 1 and 2, 2016 // View article
Authors:
Steffen Fries
Rainer Falk
Henry Dawidczak
Thierry Dufaure
Keywords: device authentication; pairwise security; multicast security; firewall; decentralized energy resource, substation automation; smart grid; smart Market, IEC 61850, IEC 60870-5, IEC 62351, XMPP
Abstract:
The reliable integration of decentralized energy resources and loads into the smart energy grid and into a smart energy market is gaining more importance to cope with the increasing energy demand and the installation of renewable energy sources. Ideally, the load on the energy transmission network shall not be affected by direct energy exchange between local generation and consumption within a distribution network. Characteristic for the involved control systems is the data exchange between intelligent electronic devices (IEDs) that are used to monitor and control the operation. For the integration of Decentralized Energy Resources (DER), these IEDs provide the data for obtaining a system view of connected (decentralized) energy resources. This system view builds the base to manage a Virtual Power Plant (VPP) by combining a number of DER, reliably. In substation automation, the standard IEC 61850 is used to enable communication between IEDs to control the central energy generation and distribution. This standard is being enhanced with web services, features and mappings to support its application also for DER. One difference to the classical application in substations is the integration of IEDs residing on a customer network, most likely to be operated behind Firewalls and Network Address Translation (NAT). Nevertheless, end-to-end secured communication between DER and control center also over public networks must be ensured to maintain a consistent security level. Here, adequate IT security measures are a necessary prerequisite to prevent intentional manipulations, affecting the reliable operation of the energy grid. This paper investigates into the currently proposed security measures for the communication architecture for DER integration. In addition to the original paper, the contributions to the International Electrotechnical Commission (IEC) for enhancements of the security for the standard IEC 61850 are elaborated more deeply with the focus not only on pairwise connections but also for multicast communication. Besides that, this paper also investigates into open issues related to the secure integration of DER.
Pages: 65 to 75
Copyright: Copyright (c) to authors, 2016. Used with permission.
Publication date: June 30, 2016
Published in: journal
ISSN: 1942-2679