IEC 61850 Based Protection Systems (original) (raw)
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Toward a Substation Automation System Based on IEC 61850
Electronics
With the global trend to digitalize substation automation systems, International Electro technical Commission 61850, a communication protocol defined by the International Electrotechnical Commission, has been given much attention to ensure consistent communication and integration of substation high-voltage primary plant assets such as instrument transformers, circuit breakers and power transformers with various intelligent electronic devices into a hierarchical level. Along with this transition, equipment of primary plants in the switchyard, such as non-conventional instrument transformers, and a secondary system including merging units are expected to play critical roles due to their fast-transient response over a wide bandwidth. While a non-conventional instrument transformer has advantages when compared with the conventional one, extensive and detailed performance investigation and feasibility studies are still required for its full implementation at a large scale within utilitie...
Substation Automation System Using IEC 61850
In this paper, the authors describe some important feature of IEC 61850 as an international communication standard in substation automation system, that separate this standard from other communication standard in substation.
Implementation of Substation Automation Systems using IEC 61850
Electric power system substations are being modernized to better serve user requirements for more efficient communication and more comprehensive protection and to facilitate future expansion by installing and applying higher-performance IEDs. There is a demand for a substation automation system (SAS) that is simple to integrate and provides high performance and flexibility. IEC 61850 capacities provide interoperability and advanced communications capabilities in substation protection, coordination, control, monitoring, metering, and testing. IEC 61850 is the result of the efforts of IEC Technical Committee 57 (TC57) to produce an open standard for substation modeling and communications. Substation configuration description language (SCL) is used in IEC61850-based substations to create substation configuration description files that contain full information about the substation. The main purpose of this format is to ensure that IED capability and substation descriptions are exchanged in a compatible way between the IEDs.
IEC 61850 based substation automation system: A survey
International Journal of Electrical Power & Energy Systems, 2020
Power systems are undergoing an evolution similar to what telecommunications sector went through several decades ago. Analog and hard-wired systems are replaced with automated digital ones. Infrastructure designs are not static anymore and are geared towards accepting new deployments as easily as possible. Limited data exchanges of the past are giving way to detailed data collection, reporting and analysis. When equipped with smart algorithms and techniques such as machine learning, these significantly enhance the capabilities of smart grids. Substations are core component of smart grid, where communication system is integrated. However, achieving a standard substation communication system that can operate with the principles of plug-and-play (PnP) is not a trivial task. Considering the cyber-physical nature of power system equipment, integration requires more diligence for safe operation. Furthermore, there are many different types of substation equipment which are manufactured by, again, countless many vendors. Achieving a common language and interoperability between them is a difficult task. IEC 61850 standard has been taking strides towards that goal. Its object-oriented structure makes its versatile while well-defined modeling blocks ensures compatibility. Recent work has focused on IEC 61850 based modeling of substation equipment, developing message exchange formats for substation functionalities as well as investigating the performance of different communication technologies when they are used to implement IEC 61850 based models. This paper reviews these efforts, their benefits to substation operation and possible future work, including cybersecurity considerations.
A Paradigm Shift in Substation Engineering: IEC 61850 Approach
Procedia Technology, 2015
With the emergence of Ethernet based technology, the industry demands for substation communication protocols that are multivendor, of high speed and built mainly for substation automation. IEC 61850 are here to stay to provide methods of developing best engineering practices for substation protection, integration control, monitoring, metering and testing; all integrated in one. But with the plethora of offerings, the end users ought to be clear in their requirement to optimize the resources and cost. This calls for developing clear specification and design basis.With IEC 61850 the typical real time data are pre-modeled in an object oriented manner that are designed for fast processing. The logical nodes, containing these data, can communicate among themselves to form logical functions. The speed of above communication can be set as per the priority of the function to be executed and so it is not necessary that the datasets to reside in same devices for execution of a logical functions. For example to introduce a fifth harmonic block in transformer differential function, it need not reside in same IED. With such offerings to make it gives opportunity to design engineers to optimize the resources and design an efficient and integrated protection system. This paper is about understanding the potential of IEC 61850 and developing specification for a typical IEC 61850 based substation automation. The specification intends to bridge the gap between the vendors and end users.
Energy and Power Engineering, 2011
International standards are being developed to promote rapid configuration and integration into the utility automation system. In order to take advantage of modern technology to provide new benefits to users of substation automation, the International Electrotechnical Commission (IEC) has developed and released a new global standard for substation automation, named IEC 61850. This aim of this paper is to provide a basic technical overview of substation automation and the standard IEC 61850. It will discuss the benefits of each major aspect of this standard and it will describe how these concepts can be used in the development and implementation of tools related to Substation Automation. The application of communication standards and protocols to facilitate data exchange within the substation environment is presented. In addition, the model is implemented using a small distribution system that plans to utilize new communication technology following the IEC 61850 standard. Finally it proposes a set of laboratories to be used as the core of an undergraduate course. Results illustrate that the communication approach as proposed by IEC 61850 fulfills the real-time requirements for control and protection of distribution system.
Control Architecture for Substation Automation Systems based on IEC 61850 and IEC 61499 Standards
2014
This paper proposes a control architecture for the substation automation systems, combining the artifacts of the IEC 61499 standard, for modeling and implementation of the control logic, with the specifications of the IEC 61850 standard, for communication and information exchange between the automation devices. The proposed control architecture is implemented and validated in a simple fault protection scenario. Key-Words: substation, automation systems, IEC 61850, function blocks, protection, power systems
Power Distribution System Automation and the Application of IEC 61850
This proposal present the power distribution problem encountered day to day, and proposes distribution automation to mitigate the problem. For Distribution automation the major requirement is the communication protocol by which different field equipment exchange data and information and to the central control. Communication protocols are the “language” with which equipment and software applications exchange information. For SCADA and substation automation today, utilities commonly use IEC 61850. This proposal will focus on to answer the different research question by developing use case study on power distribution automation using the IEC 61850 as the major part of the distribution automation. Finally this paper presents the time plan and estimated budget to accomplish this this work.
Review of the Legacy and Future of IEC 61850 Protocols Encompassing Substation Automation System
Electronics
Communication protocols play a pivotal role in the substation automation system as they carry critical information related to asset control, automation, protection, and monitoring. Substation legacy protocols run the assets’ bulk data on multiple wires over long distances. These data packets pass through multiple nodes, which makes the identification of the location and type of various malfunctions a challenging and time-consuming task. As downtime of substations is of high importance from a regulatory and compliance point of view, utilities are motivated to revisit the overall scheme and redesign a new system that features flexibility, adaptability, interoperability, and high accuracy. This paper presents a comprehensive review of various legacy protocols and highlights the path forward for a new protocol laid down as per the IEC 61850 standard. The IEC 61850 protocol is expected to be user-friendly, employ fiber optics instead of conventional copper wires, facilitate the applicati...
Implementation issues with iec 61850 based substation automation systems
2008
International Electro-technical Commission (IEC) has developed a new global standard, IEC 61850 for communication systems in power substations. This standard provides interoperability among the all communication devices within the substation. This paper presents basic features of communication systems proposed by IEC 61850, such as functional hierarchy, OSI-7 layer based communication, and process bus. To obtain complete advantages of the standard, it is important to consider all the major issues related to practical implementation. This paper discusses challenges for implementing new communication architecture, such as process bus and station bus. Further, the overall substation functional issues, and planning issues are also explained. Some possible solutions to several major implementation issues are suggested. I. INTRODUCTION he success of a Substation Automation System (SAS) relies on the use of an effective communication system to link the various protection, control, and monitoring elements within a substation. The major challenge faced by substation automation design engineer is to provide interoperability among the protection, control, and monitoring devices from the various manufacturers. Up until recently, all the manufacturers are/were using their own proprietary communication protocols. Huge investment is needed to develop costly and complicated protocol converters [1]. To address these SAS issues, IEC working group TC57 has published IEC 61850 named as "Communication Networks and Systems in Substation" in 2003 [2]. IEC 61850 standard covers not only how to communicate but also what to communicate. IEC 61850 capabilities clearly exceed what former IEC 60870-5-103, DNP3, and most proprietary protocols had to offer [3]. IEC 61850 provides the interoperability by defining the communication protocol, data format and the configuration language. However, there are several unresolved issues which need to be addressed before the implementation of IEC 61850 based SAS. T. S. Sidhu et al. have evaluated performance of IEC 61850 based substation communication system, and highlighted issues with several communication topologies, in reference [4]. References [5-10] discuss specific issues related to communication network of SAS. In reference [11], B. Kasztenny et al. have investigated functionality issues related to IEC 61850 based SAS.