This paper presents new protection concepts in distribution networks with dispersed energy resources (DER), based on the new standard for a substation automation system (SAS) IEC 61850. The idea and realisation of the new protection concept is implemented in the electronic-learning system for digital protection in the frame of teaching network protection.

The IEC 61850 SCL language for Substation Configuration description is standardized for the interoperable exchange of engineering data between engineering tools. Its model based approach allows to use it also for other purposes. As an illustration this paper explores some examples, like usage for storage of protection parameters, maintenance support, control center gateway engineering, and appl...

Change management, software configuration training, and human error all impact the cost associated with substation automation engineering. Object-oriented engineering approaches as defined in the IEC 61850 standard represent significant cost savings when compared to traditional methods using hardwire and Distributed Network Protocol (DNP3). New multivendor system configuration tools are describ...

The electrical power system is susceptible to several faults, which can cause the malfunction. Among these, ones that occur in busbars of substations stand out. main bus a substation concentrate large amount and many derivations service loads, making it an element high importance for reliability system. Although buses have low incidence they are considered critical elements system, as their ope...

The paper proposes the use of digital watermark based authentication for intrusion detection in IEC 61850automated substations. The watermark can be embedded into the Least Significant Bits of the measurements without visible deterioration in precision. When Intelligent Electronics Devices gets measurements, the watermark in the measurement can be retrieved to determine whether it has been atta...

This document describes the utilization of the nonconventional measurements and advanced features of IEC 61850 standard for substation automation systems, especially how sampled value sending according standard part 9-2 can be used between IEDs in mediumvoltage substation to improve the reliability and functionality of the system. Calculated results indicate improvements on availability, perfor...

The paper presents the performance of a novel distributed bus differential protection scheme, which utilizes independent multi-principle advanced protection algorithms, including differential percent slope, delta phase directional comparison, rate of change of differential (ROCOD) currents, delta phase directional comparison on neutral current differential, and a check zone to secure the electr...

The concept of a phasor synchronized with the power system was introduced in the 1980s and standardized for the first time with the standard IEEE 1344. That measurement concept was further developed in the current synchrophasor standard, IEEE C37.118 that was completed in 2005. It is currently undergoing revision to fully define the measurement in all conditions including dynamic changes in the...