IEC 60870-5-104 as a driver to evolution of substation and distribution automation at EDP (original) (raw)
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IEC61850: a Lingua Franca for Substation Automation Systems
The last few years has seen numerous studies pointing to the IEC61850 as a worthwhile international standard for substation automation systems. The standard incorporates the use of logical nodes to resolve problems related to interoperability and interchangeability in multi-vendor zone substation systems. The standard also initiated a cost-effective Generic Object Oriented Substation Event (GOOSE) messaging technology to replace the traditional copper wiring. This paper provides a synopsis of communication protocols and their development over the time. The authors elucidate core elements of telemetry communications, structures of protocols and the significance of standards for communication protocols within substation automation systems. This paper aims to endorse and publicise the IEC61850 protocol as the latest and improved communication standard opposed to other substation protocols like DNP and Modbus.
61 IEC 61850 Communication Networks and Systems In Substations: An Overview for Users
Over the last decade, the "digitization" of the electron enterprise has grown at exponential rates. Utility, industrial, commercial, and even residential consumers are transforming all aspects of their lives into the digital domain. Moving forward, it is expected that every piece of equipment, every receptacle, every switch, and even every light bulb will possess some type of setting, monitoring and/or control. In order to be able to manage the large number of devices and to enable the various devices to communicate with one another, a new communication model was needed. That model has been developed and standardized as IEC 61850 -Communication Networks and Systems in Substations [1]. This paper looks at the needs of next generation communication systems and provides an overview of the IEC 61850 protocol and how it meets these needs.
Second generation IEEE802.11N performance for IEC61850-based substation automation system
2016
As the initial scope of supporting communications inside substation automation systems, IEC 61850 was defined to be mapped on Ethernet as the layer 2 communication network technology. It is because the Ethernet is the dominant technology for the Local area network – LAN and it brings significant advantages of high bandwidth and low latency especially with the use of optics fibers at the physical layer. Consequently, Ethernet is very appropriate for the substation indoor LAN with applications that require high bandwidth e.g. measurements and time-critical functions such as protection services. However, when IEC 61850 is extended to support large-scale communication networks between substations, control the centers to substations and DERs; Ethernet is no longer a good solution. The rapid emergence of DERs, the increasing amount of electric vehicles and smart meters reveal the shortcomings of Ethernet which rest in its high set-up cost and scalability problem following the use of cable...
Communication Protocols and Networks for Power Systems - Current Status and Future Trends
Proceedings of IEEE Power System Conference and Exposition, 2009
Minimizing implementation time and manual configuration, as well as straightforward upgradability are the key requirements of efficient substation automation systems. For larger utilities this often necessitates achieving interoperability between different devices from multiple vendors. Since the early 1990's it was noticed that the speed of advances in communication technology seemed to overpass its power system counterpart, which called for more adaptability by substation automation systems and higher independence from the underlying communication technology. The natural shift in the industry from proprietary communication protocols to open access standards was therefore further accelerated and was directed towards more advanced solutions that provide an interoperable and future proof environment. In order to be able to respond to these concerns, IEC 61850 was proposed as a future proof, adaptable communication protocol, capable of providing interoperability in a multi-vendor environment and with a highly advanced object oriented modeling structure. The migration from legacy protocols and de facto standards such as Modbus, DNP3, and IEC 60870-5 has already started and it seems likely that it will continue at a steady pace in the future. In addition to the efforts to provide an advanced solution for substation automation systems, there is also a need for extending the "automation" benefits to beyond the substations either downstream, at the feeder level or upstream, at a higher level of network management. The objective of this paper is to provide an overview of the current status of communication networks for substations using IEC 61850, and also discuss the possible future trends for extending the scope of the standard and using its capabilities for other applications within the distribution system.
2015
The development of a computational platform of a communication network for an automation system using the precepts of IEC 61850 has become a great trend in substation automation systems (SASs) research. Recent developments in wireless communication technologies, especially the IEEE802.11 have enabled cost-effective remote control systems with a capability of monitoring, control and protection in the real-time operating conditions of substations. The message delay and throughput in substation automation while using the WLAN and smart grid must satisfy the standard requirements specified in the IEC 61850-5. In this paper, the end-to-end (ETE) delay of IEC 61850-based messages and operating time of the over current protection using the WLAN-based communication network has been evaluated using Opnet Modeler Edition 18.0.
IEC 61850 based OPC UA Communication -The Future of Smart Grid Automation
Within this contribution, we outline the use of the new automation standards family OPC Unified Architecture (IEC 62541) in scope with the IEC 61850 field automation standard. The IEC 61850 provides both an abstract data model and an abstract communication interface. Different technology mappings to implement the model exist. With the upcoming OPC UA, a new communication model to implement abstract interfaces has been introduced. We outline its use in this contribution and also give examples on how it can be used alongside the IEC 61970 Common Information Model to properly integrate ICT and field automation at communication standards level.
Control and management of distribution system with integrated DERs via IEC 61850 based communication
Engineering Science and Technology, an International Journal, 2017
Distributed Energy Resources (DERs) are being increasingly integrated in the distribution systems and resulting in complex power flow scenarios. In such cases, effective control, management and protection of distribution systems becomes highly challenging. Standardized and interoperable communication in distribution systems has the potential to deal with such challenges to achieve higher energy efficiency and reliability. Ed. 2 of IEC 61850 standards, for utility automation, standardizing the exchange of data among different substations, DERs, control centers, PMUs and PDCs. This paper demonstrates the modelling of information and services needed for control, management and protection of distribution systems with integrated DERs. This paper has used IP tunnels and/or mapping over IP layer for transferring IEC 61850 messages, such as sample values (SVs) and GOOSE (Generic Object Oriented Substation Event), over distribution system Wide Area Network (WAN). Finally performance of the proposed communication configurations for different applications is analyzed by calculating End-to-End (ETE) delay, throughput and jitter.
Opportunity for using WLAN with IEC 61850 and the future of this protocol
2017
The unified protocols are unified in application interface, models, and seamless. They generate one standard protocol, one world called IEC 61850. IEC 61850 integrate the security, interoperability, modelling, mapping to a substation, and reliability. Presently, the more expensive fiber based Ethernet LAN is the most prevalent technology for medium and low voltage distribution substations. To circumvent this problem Wireless Local Area Network (WLAN) has been investigated for its suitability for applications that are compliant to IEC 61850: automation and metering; control and monitoring; and over-current protection. In this paper the IEEE 802.11n WLAN is studied when used in various IEC 61850 supported applications for substation automation. It also discusses the benefits of using GOOSE message to protect and control applications and the use of IEC 61850.
Performance Evaluation of IEC 61850 under Wireless Communication Networks
Proceedings of the 6th International Conference on Management of Emergent Digital EcoSystems - MEDES '14, 2014
The standard IEC 61850 is considered as a candidate for communication standard for smart grid applications. The delay performance is one of the critical issues that were specified by IEC 61850. However, a few works have been done to evaluate the delay performance under wireless networks. This paper presents the modeling and simulation of IEC 61850 substation automation system (SAS) under wireless and hybrid networks. OPNET is used to model and simulate the Intelligent Electronic Device (IEDs) for three types of messages: GOOSE, the Raw Data Sampled Values and the Interbay trip messages in Substation Automation System.
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.