. The main purpose of the standard IEC 61400-25 is the unification of communication systems in wind power plants, both for internal exchange of information and for remote control. Most of the current control and monitoring systems used in wind farms are vendor-specific and the protocols and data provided by these systems are therefore dependent on their manufacturer. This paper explains the mai...

Over the past 25 years there have been a number of initiatives worldwide to develop guidelines and standards to enable the safe exploitation of programmable electronic systems used for safety applications. In the context of industrial applications (to distinguish from aerospace and military applications) a major initiative has been focussed on IEC 61508 and this standard is emerging as a key in...

A critical step towards certifying safety-critical systems is to check their conformance to hard realtime requirements. A promising way to achieve this is by building the systems from pre-verified components and verifying their correctness in a compositional manner. We previously reported a formal approach to verifying function blocks (FBs) using tabular expressions and the PVS proof assistant....

The standardization group ISO/IEC SC31/WG7 is working on a set of cryptographic suites to provide security to wireless devices including UHF RFID tags. These cryptographic suites are presented as independent parts to a single standard ISO/IEC 29167. Within this multi-part standard 29167-15 is based around very simple operations and intended to provide tag, interrogator, and mutual authenticatio...

Remote control and execution gives the possibility of designing applications where any controller can have access to high computational power and knowledge just by use of standard network interfaces. This work describes the structure and components of a system that allows a user to select an algorithm from a web library, configure the execution parameters and remotely control a plant applicatio...

Abstract: DC auxiliary systems are usually relied upon as the last source of reliable electric power at an installation of power plants and substations. Because DC auxiliary systems and battery power sources differ from AC systems, it is important that DC system protection designer is aware of their special considerations. In Standard IEC 61660-1 is given mathematical model for dynamics analysi...

-As IEC 61850 becomes more widely accepted in the electrical engineering community, it is important that the testing tools keep pace with this development. IEC 61850 presents new challenges to real time simulation and closed-loop testing of protective relays. Electrical interfaces used for binary signaling and voltage/current amplifiers must be replaced by an Ethernet connection and an IEC 6185...

The introduction of the standard IEC 61850 for communication in power systems enables to build enhanced Substation Automation (SA) systems and to distribute requested functionalities in an optimal and standardized way. This brings new challenges and opportunities related to interoperability between compliant IEDs and tools as well as for testing and maintenance processes. The complete sequence ...

This paper describes how the new international standard series IEC 61850 is applied and extended to meet the requirements for almost the whole electrical energy supply chain, especially outside substations. Several activities are under way in the domains of power generation (wind power plants, hydro power plants, and decentralized energy resources), power transmission and distribution as well a...

The IEC 61850 Standard, Communications Networks and Systems in Substations, provides an internationally recognized method of local and wide area data communications for substation and system-wide protective relaying, integration, control, monitoring, metering, and testing. It has built-in capability for high-speed control and data sharing over the communications network, eliminating most dedica...