AMNYTT amnytt.no 7/2020 | Page 145

The roof as a crime scene : The decentral feed-in of energy burdens the grids
INGO is red , small , and transmits the data acquired to the cloud . Julian Kemper from PSI GridConnect explains how it works
The fuse switchboards are supplied by Jean Müller GmbH
solution : The “ Energy Control Interface ”. This interface collects the values of the installed measuring sensors , processes them , and forwards them to the local substation via a special remote control protocol .
The power supply and fuses are located in the interface . The hardware solution for the digitalization of low-voltage outputs can therefore be installed via plug-and-play . If the remote control unit cannot be set up on site , this can also be done using an offline tool or remotely via FTP data transfer .
“ In Asset Management , we would like to look to the future in terms of grid expansion and identify critical grid points at an early stage before they arise ,” explains Peter Wiacker , Head of Asset Management at Energienetze Mittelrhein , who is also responsible for the power grids in this role . “ For this purpose , it is imperative that we acquire measured values from the grid areas that have not yet been digitalized . This is the only way we can determine the effects of , for example , the considerable expansion of photovoltaics and how the power grid is influenced by the increasing number of public and private charging points and smart loads .”
INGO is red The measuring sensors are installed in two cable distribution cabinets in the bright yellow fuse switchboards PLPlano from Jean Müller . They are connected to the Energy Control Interface . All measured values are passed on to the cloudbased smart grid platform . It goes by the catchy name
“ PSInGO ”, or INGO for short . The red box required for this is also installed on the busbar in the local grid distributor . This platform was developed by PSI Gridconnect .
If grid nodes cannot be measured directly , PSInGO calculates them using an algorithm developed by PSI Gridconnect . In this way , the grid conditions in Kadenbach are made transparent to the grid management system . The calculation of the step position of the controllable local grid transformer is carried out locally by PSInGO and is implemented by a PLCnext control device from Phoenix Contact .
If a limit value is exceeded , the system sends notifications to the responsible Energienetze Mittelrhein employees , who can intervene manually where necessary . Normally , however , the voltage levels are adjusted fully automatically . “ Smart solutions such as the controllable local grid transformer station with wide-range control installed in Kadenbach can help us to master the challenges of the ongoing energy revolution ,” explains Dr . Andreas Hoffknecht , Managing Director of Energienetze Mittelrhein . “ The fully automatic compensation of voltage fluctuations will ensure a reliable supply of energy to the population in the future as well ” ( lo ) •
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The Phoenix Contact innovation magazine UPDATE 6 / 20 41