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Since IEC 61850 became the widely used standard for substation communication with a lot of implementations. Testing is an important issue. The standard in its current version covers some possibilities and approaches for testing in general and for measures of performance. Nevertheless some issues came out which needed to be clarified with the new edition of the standard. Edition 2 will be available...
Fuse-saving practices have coordination limitations at higher current levels — it is common for the upline device to trip and the fuse to operate at the same time. The result is frequent momentary outages for many customers and blown fuses, even for temporary faults. These challenges have led some utilities to abandon the practice of fuse-saving and instead migrate to a fuse-blowing philosophy. The...
The requirements for improvements in the efficiency and quality of protection schemes at the transmission and distribution level of the electric power systems highlights the need for development of new methods and tools that can help the industry achieve these goals. The paper describes an object-oriented engineering process for the development and implementation of protection schemes, the IEC 61850...
Currently, there are many challenges in the development of numerical, multifunctional Intelligent Electronic Devices (IEDs) paraphrased as relays in this paper. These are to continuously improve the design quality, to reduce the development period for shorter time to market, and to optimise the development cost and the product cost. One effective solution for these challenges is to develop automated...
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