IEC 61850 as a flexible tool for electrical systems monitoring

Abstract

In the last decades there have been great advances in electronic, information and communication technologies. Up to date, any of these advances have been implemented in electrical systems, but some difficulties have been encountered, particularly regarding to the integration of intelligent electronic devices from different manufactures into a centralized system. With the aim of solving the above mentioned problem, the standard IEC 61850 was developed to specify communication networks in substations.In addition to control and protection functions, the information model created around IEC 61850 series can help the development of other applications related with electrical monitoring systems. Monitoring can be used to achieve a variety of benefits for utilities, including maintenance prediction, failure prevention, active control, improved commissioning tests and more accurate end of life assessments. Examples of application that could be highly benefited by the adoption of IEC 61850 as standard for communications in the power electrical industry are power quality monitoring and condition based maintenance.In this paper, the new standard IEC61850 and the new opportunities that it can offer to the electrical industry are presented. Firstly, a brief presentation of IEC61850 and the main benefits it provides are described. Finally, a more detailed description of the possibilities that IEC61850 can offer in the field of power quality monitoring and condition based maintenance (CBM) is highlighted.

Load analyser using conservative power theory

“…Using these components in (6), the relation may be expanded to (7): (7) The terms in (7) are collective values, i.e., each term is calculated by the square root of RMS values from all the phases of the circuit. Furthermore, all components are orthogonal to each other.…”

“…In this way, traditional meters (e.g., electromechanicals), which inform only kWh to human operator [5,6], should be replaced by smart meters that may inform several PQ indexes, such as power factor, harmonic distortion, voltage or current unbalances, voltage fluctuation, frequency variation [7] and other relevant information to consumers and utilities, e. g., power components that indicate the predominance of a determined kind of load in a system. Moreover, it is important that the information would be available at a possible network (websites or applications) [8,9], which would allow the access of consumers, in order to evaluate their use of energy, as well as utilities, for accountability and revenue metering purposes.…”

A ‘Binocular’ Method for Detecting Faults in Electrical Distribution Networks with Distributed Generation

“…Agents take sensory input and produce output actions such as breaker trip signals, adjusting transformer tap settings and switching signals in capacitor banks [14], [11]. Standard IEC 61850 [15] normalises the communication protocols between IEDs [16], [17], and establishes the data transmission time (see Fig. 1); how long this takes is important.…”

Design, management and comissioning of a utility connected microgrid based on IEC 61850

“…Some ACSI services map onto other protocols, such as Simple Network Time Protocol (SNTP) for time synchronization messages, Generic Object Oriented Substation Event (GOOSE) and Generic Substation Status Event (GSSE) for trips and fast messages. Alternatively, services used for the transmission of sampled values (in which there are raw data messages) are mapped directly into the Ethernet frame [12].…”