In order to reduce threats such as data theft, data manipulation and operating errors, appropriate protection mechanisms are indispensable. These include role-based access rights (RBAC), which are intended to prevent unauthorised access to functions, views and data.
From ELECTRICAL ENGINEERING PORTAL Why IEC 61850 The IEC 61850 standard has been defined in cooperation with manufacturers and users to create a uniform, future-proof basis for the protection, communication and control of substations. In this brochure, we present some application examples and implemented stations with the new IEC 61850 communication standard. IEC 61850 already […]
The EPRI Power Quality Knowledge Development and Transfer supplemental project provides a wealth of high-impact resources in a well-designed, readable, and accessible format. Paramount among these are numerous and highly readable documents covering a wide range of PQ topics, written not only for use by busy PQ professionals, but also to expedite problem solving and […]
This paper discusses different approaches to investigate the interaction through harmonics, interharmonics, supraharmonics, and light flicker, between photovoltaic (PV) inverters and LED lamps in low-voltage installations. Single grid connected power generators and electronic loads like LED lamps can be easily characterized in terms of harmonics in a given range of frequency. This subject is relatively […]
Accuracy of the measurement questioned. Measuring instruments are usually classified according to standards and accuracy. Accuracy is an important indicator for being able to usefully build on a solid measurement result in the analysis and its resulting measures. However, it can be observed that although the measuring devices used correspond to a required accuracy class, […]
Problem: Potential equalisation currents Potential equalisation currents, often referred to as vagrant currents, are not only a problem in industrial plants. Currents can also have a disruptive effect on equipotential bonding in commercial and even residential buildings. Cause: Leakage currents frequency inverter The picture shows the cause of an annoying whistling in the speakers of […]
Power blackout in Germany? A warm welcome, dear friends of protection, control and electrical engineering. What actually happens during a power blackout and is that even possible in Germany? Marc Elsberg showed us a terribly realistic scenario in his book ” Blackout“. A large-scale and prolonged power blackout would have relevant consequences for our society. […]
Innovative and informative website on the topic of power quality The topic of power quality is rapidly gaining importance in the context of the energy transition and smart grids and smart metering. As a result, the question marks of the supposedly affected and involved parties are piling up to the same extent. What does this […]
Certified power quality monitoring and fire protection enhancement Preamble The volume of digital data continues to increase rapidly and steadily. Not least caused by cryptocurrencies, such as Bitcoin (XBT), Ether (ETH), Litecoin (LTC), etc. or, for example, by the blockchain process, a quasi-type database that works on various networked servers. The increasing demand for data […]