www.e-world-essen.com

The requirements for energy distribution in terms of usage, functionality and
structures are ever changing. Power grids are subject to the severe deviations in
energy flow caused by renewable sources. In the future, grids will also be challenged
by electric vehicles drawing power at charging stations.

Transparent energy flows are a prerequisite for the stability of smart grids. Accordingly, actual grid states must be combined in a smart manner in order to match supply and demand. This is essential in order to balance the strongly fluctuating energy flows caused by volatile power sources on the one hand and consumption peaks caused by the steadily increasing number of electric vehicles drawing power for recharging on the other hand.

To allow grid operators to ensure the reliability of the distribution grid and to make costeffi-cient adjustments to the infrastructure, it is necessary to continuously measure and monitor the dynamic loads in the distribution grids. With the BeEnergy SG Smart Grid Interface Module, metering points can be implemented at strategic points in distribution grids, easily and at low costs.

Meeting this challenge calls for tested and proven solutions: Simple assembly into existing systems without interruption of power, flexibility in terms of the number of measuring points as well as a hardware that can be handled without extensive prior training. With the Smart Grid Interface Module (SGIM), BeEnergy SG has developed a modular system for the collection of electric and other physical parameters in distribution cabinets and wiring distributors.

Additional to power adapter and CPU, other functions can be configured as options. Up to 7 measuring
modules for 3-phase monitoring and for up to 14 low-voltage connections can be fitted to the snap-in
module body. In addition, three plug-in slots are provided for universal modules such as GSM or OFC interfaces or I/O-modules with floating contacts.

Rogowski coils have significant benefits when space for current measuring is limited. The compact dimensions and simple attachment by means of tie-wraps to the power lines or busbars dramatically reduce time and effort when retrofitting. Since Rogowski coils show no saturation effects, a wide primary current range can be measured without compromising accuracy. The coils comply with accuracy class 1 according to EN 61869, thereby eliminating the need for coil and measuring module calibration.

The SGIM can be mounted to live busbars without any risk of accidental contact. Simply attach the installation base to the busbars. No need to power down the system.

Thanks to its installation base, the Smart Grid Interface Module can be easily retrofitted into existing distribution cabinets or new systems to ensure that the equipment is fit for future demands. The module body containing the modular measuring electronics can easily be snapped into the installation base and also be removed with little effort.

It is installed to live 185-mm busbar systems without prior powering-down. The module can also be installed in distribution systems without busbars. The voltages required for measuring  are easily connected to the module body using a plug-type connector.

Thanks to its compact dimensions and width of only 100 mm, the Smart Grid Interface Module can be retrofitted into blank slots in wiring distribution cabinets with little effort and at low costs. Measurements are made by Rogowski coil sensors connected to the measuring module by plug-type connectors. Existing current transformers fitted in NH fuse-switches can be connected to the measuring module as well.

To facilitate measuring, Rogowski coils can be quickly retrofitted into existing systems without interrupting running processes. All you need to do is to loop the flexible sensor ring around the conductor to be measured. It is not necessary to open the conductor and interrupt the power flow. Just plug the wiring kit for three-phase measuring into the Rogowski measuring module and you are all set!

Rogowski coils consist of a flexible sensor ring that is simply looped around the conductor to be measured and that is then closed by a twist lock. This measuring method is well suited for currents between 10 and 1,000 Amps. To make installation really easy, the SGIM's Rogowski sensors for the measuring of three-phase power connections are preassembled and ready to connect.

GSM communication
Fiber optic module
Grid Analysis Integrated
The Smart Grid Interface Module includes a three-phase voltage tap for mobile grid analysts. Measurements are done via fully insulated connection sockets protected by residual current devices.

The innovative and secure IoT connection also permits write-access. This data exchange can be used for example to trigger switching operations in transformer stations or perform analog control procedures.