Special Publications

Digital secondary substations are becoming a key element for distribution system operators in terms of automation, monitoring, and efficient operations of their networks Read this technical report about the EOR-3DS in its role as digitisation unit for secondary substations

Tracking down causes of harmonics in the energy grid in practice Today, there are hardly any consumers that draw a […]

Today’s devices and equipment such as switched-mode power supplies, frequency converters, controlled drives, charging devices for e-mobiles or LED lighting work internally with high clock frequencies in order to regulate power efficiently. These can lead to line-borne as well as field-borne (coupled) interference in the power grid. In this technical report, we explain how you can detect these sources of interference in the grid using suitable measurement technology.

Useful tips & tricks for handling Power Quality measuring devices and typical user errors – now in our two-part article! This article provides further insights and practical tips and application examples for power quality analysis.

Useful tips & tricks for handling Power Quality measuring devices and typical user errors – now in our two-part article! This article explains tips and tricks for performing power quality measurements. It explains which connection errors can be made and which preliminary considerations should be made before using a measuring device.

The following technical report examines various methods for measuring current. It discusses how currents are measured using power analyzers and current clamps. The respective advantages and disadvantages of different technologies such as shunts, normal current clamps, hall effect sensors, etc. ar also evaluated.

This second technical report on the subject of reactive power and in particular the distortion reactive power supplements the first contribution “Cos ϕ vs. power factor λ – Theory”. In this article, the voltage and current of an incandescent lamp are measured in an online measurement using a power analyzer.

This technical report discusses the distinction between power factor and cosine phi. Cosine Phi, formerly widely known as the ratio of active power to apparent power, however, has a different meaning for many consumers today.

The transformation of the energy industry from a centralized structure to a decentralized energy supply is creating complex energy networks with volatile load flows and changing load flow directions. Grid feedback effects must be reduced to a tolerable level to avoid negative effects.

In a photography and design studio, located in a large industrial park, a RCD tripped frequently. Due to the permanent power cuts, the employees of the studio could not work properly. This article shows how we found a solution for this problem using our Power Quality devices.