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Advanced Protection and Control for the Smart Grid
Published in Stuart Borlase, Smart Grids, 2018
Jens Schoene, Muhammad Humayun, Stuart Borlase, Marco C. Janssen, Michael Pesin
There were also advances in communications capabilities, with additional ports available to communicate with IEDs. However, the most significant improvement was the introduction of an open communications protocol. The older SCADA systems used proprietary protocols to communicate between the master station and the RTUs. Availability of an open and standard (for the most part) utility communications protocol allowed utilities to choose vendor-independent equipment for the SCADA systems. The de facto standard protocol for electric utilities SCADA systems in North America became DNP3.0. Another open communications protocol used by utilities is MODBUS. The MODBUS protocol came from the industrial manufacturing environment. The latest communication standard adopted by utilities is International Electrotechnical Commission (IEC) 61850. IEC 61850 is a very powerful and flexible network-based, object-oriented communication standard that allows for utilities to move their next-generation substations that are flexible and expandable; allows for the implementation of multivendor solutions; and in addition to the communication, facilitates a standardized engineering approach allowing for optimization of utility engineering and maintenance processes.
Introduction to Smart Grid Systems
Published in Felix Alberto Farret, Marcelo Godoy Simões, Danilo Iglesias Brandão, Electronic Instrumentation for Distributed Generation and Power Processes, 2017
Felix Alberto Farret, Marcelo Godoy Simões, Danilo Iglesias Brandão, Luciane N. Canha, Alzenira R. Abaide, Daniel P. Bernardon
IEC 61850 is a standard regulating communications within a power substation environment. It is a standard that has gained global acceptance by both suppliers and customers, which, in this case, is represented by power utilities. This standard sets strict rules interoperability between independent manufacturer devices, thus providing protection, monitoring, control, and automation [19]. Figure 11.2 shows the main communication services defined by standard IEC 61850 and also the MODBUS protocol [19,21,22]. These services are provided in application layers where different communication modes are used, such as MMS, GOOSE, and TCP/IP [19].
Substation Automation and Control
Published in Ramesh Bansal, Power System Protection in Smart Grid Environment, 2019
Adeyemi Charles Adewole, Raynitchka Tzoneva
To protect the critical assets in IEC 61850 systems, it is necessary to implement security measures that provide reliable and robust systems resilient to cyber attacks. It is best that the security measures are designed in the earliest stages of a project, and they should be considered through all phases of the process, from design to development to rollout. Prior to the deployment of an IEC 61850-based system, a set of cyber security requirements must be developed, new equipment must undergo vulnerability testing, and proper security controls must be designed to protect the IEC 61850 system from unauthorized access.
Symmetrical Fault Detection During Power Swing Using Mean Value of Sampled Data from the Current Signal
Published in IETE Journal of Research, 2022
Behrooz Taheri, Milad Faghihlou, Sirus Salehimehr, Farzad Razavi
The IEC 61850 standard is a framework for making a relationship between measuring and protection equipment made by different manufacturers. The IEC 61850 protocol is a protocol for the automation system of power plants (renewable energy, hydroelectric power plants, and distributed generations), substations, and distribution systems that is based on TCP / IP protocol and has different capabilities that provides a simple communication between equipment manufactured by different companies. This protocol is one of the exclusive ones that is adopted by both the United States and the European electrical industry. The appearance of the IEC 61850 protocol provided the possibility of the transmitting data for processing them on a large scale in smart grids by high speed in sending and receiving data. Figure 20 shows the protection system when using a central unit. In this system, the central protection unit communicates with each IED and circuit breakers on the network based on the interrupt principle. The communication between the IEDs and the circuit breakers is done by the central protection system using the IEC-61850 standard.
Waveform Analysis-Based Intelligent Fault Classifier with Novel Fault-Zone Segregations for Real-Time Application in Large Power Networks
Published in Electric Power Components and Systems, 2018
For practical system monitoring and control, and for post-event analysis, transient recorders are increasingly becoming essential. The IEC 61850 standard: “Communication Networks and Systems in Substations,” now sets the protocol for all types of communications between substations for tasks like control, protection, and monitoring. Migration to IEC 61850 from older standards invariably requires good recording capabilities in the form of intelligent electronic devices and multifunction disturbance recorders installed at substations. The introduction of microprocessor-based relays now provides the opportunity of disturbance recording. The cost involvement in installing these modern recording facilities may however be prohibitive in some cases, particularly for the developing countries like India, where many power utilities are heavily dependent on primitive electromechanical relaying and basic analog recording facilities for the voltage, current, and power.
Protection Strategies for AC and DC Microgrid – A Review of Protection Methods Adopted in Recent Decade
Published in IETE Journal of Research, 2021
S. Faazila Fathima, L. Premalatha
Interfacing traditional protection schemes such as overcurrent, directional, differential, distance and other advanced protection schemes with smart protocols like IEC 61850 can lead to a higher reliability level. Microgrid structure and modes of operation, communication-based strategy implementing with pattern recognition, synchro phasors, fault current limiters are to be focused by researchers in future. Because of the dynamic behaviour and bidirectional power flow in microgrid, the Internet of Thing (IoT) interfaced IEC61850 protocol is recommended for microgrids’ operation. Multi-microgrids (MMGs) provides efficient and uninterruptable power to consumers. However, their control, power quality, integration, energy management and protection are still in earlier research.