iii Foreword ISO (the International Organization for Standardization) and IEC (the International Electrotechnical Commission) form the specialized system for worldwide standardization. National bodies that are members of ISO or IEC participate in the development of International Standards through technical committees established by the respective organization to deal with particular fields of t...

In this paper, we present a proposal to implement the IEC 61131-3 software model. This model establishes the high-level elements of the Programmable Logic Controllers. We discuss some of the points of the standard that should be clariWed before implementing it, such as concurrency, variable scope and cyclic operation. We show the implementation guidelines using POSIX compliant Real-Time Operati...

The article presents FPGA-based hardware platform for executing control system software written in languages of IEC 61131-3 standard in CPDev integrated development environment. Supported data types, compilation to intermediate code and two implementations of FPGA execution machine – basic and enhanced are described. The implementations have been tested for speed and compared with software-base...

In case of direct lightning strike to a building dangerous sparking may occur between the external lightning protection system and conductive installations inside the building. To avoid such side flashes a minimum separation distance between conductive parts inside the building and the air termination or down conductor system is required. The standard IEC 62305-3 provides formulae to determine ...

Using IEC 61850 standard would increase the reliability and availability of electricity network and put a huge impact on network automation. Even though much research works has been done in substation system reliability, there is a few works in automated substation control system reliability. This paper evaluates the reliability of substation automation system based IEC 61850 comparatively cons...

In recent years we have conducted about 25 assessments using IEC 61508 or IEC 61511, working mainly to Safety Integrity Level (SIL) 2, but on some occasions to SIL 3. In this paper we present some of the lessons we have learned and offer advice to those seeking certification for components, systems or generic process capability. We cover the three main parts of the IEC 61508 standard: Functiona...

The recent international standard IEC 61850 proposes a unified solution of the communication aspect of substation automation. However, the standard itself is not easily understood by users other than domain experts. We present our understanding of the IEC 61850 standard as well as the design and implementation of our simulation tool in this report. Also, we give suggestions on the implementatio...

This document describes a development process of an offshore wind ontology based on the IEC 61400-25 standard. The methodology “METHONDOLOGY” and Protégé are used to build the ontology. Introduction Organizational units and information technology systems rarely last more than a few years. Only some parts of the data from these systems are used for decades and become one of the main assets. Obvi...