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L'édito de Vincent BedouinSAE Mobile Telecontrol Case
Intelligence in a case
“Top-Down” from high voltage via medium voltage to low voltage at the end customer: In the past, distribution networks were planned and implemented according to the clear direction of load flow. Transformers, lines and protective devices were sized based on the loads to be supplied, typical load profiles, statistical simultaneity factors, as well as a significant safety factor.
The steadily increasing feed-in power from renewable energies, electromobility and the growth in heat pumps are now frequently pushing distribution and low-voltage networks to their limits. Critical operating states and overloads can arise there, as the classic network calculation models and assumptions are based on constant load flows than actually results from the new consumers and generators today. The mobile telecontrol case quickly assists with a temporary low-voltage measurement to help you detect and analyze anomalies. In addition, the mobile telecontrol case provides important information for the planning and validation of construction measures and commissioning.
Advantages of the telecontrol case at a glance
- Transport equipment safely and easily
- Simple and fast attachment of the very compact measurement box thanks to flat grip magnets and plug-in connections
- Up to 3 low-voltage outputs (L1, L2, L3 & N) can be measured
- The case is pre-parameterized, only few own adjustments necessary
- Data transmission via LTE, for example via IEC 60870-5-104 to the control center or via MQTT to a cloud
- Easily identify critical “hotspots” in low-voltage networks in order to permanently retrofit measurement technology there
- Extensive parameterization and diagnostic options thanks to setIT
- Archiving of data on SD card possible
Uncomplicated, fast and simple
Virtually all network operators are faced with the challenge of creating transparency in the lower voltage levels without being able to equip all resources with stationary measurement technology. A rollout of stationary LV metering for all stations would usually be neither economically nor organizationally feasible.
One solution is our mobile measuring equipment, with which the most important parameters can be checked quickly and reliably. This not only allows problems with the equipment to be identified at an early stage, but also enables customers’ connection requests for wallboxes, PV systems and heat pumps to be processed more efficiently.
The heart of the mobile solution is the FW-5-GATE-4G telecontrol device with PM-1-R modules for connecting Rogowski coils, for parallel measurement of up to 3 low-voltage feeders. The measured values can be transmitted directly to the control center via IEC 60870-5-104 protocol or to the cloud via MQTT. There they are displayed live. The measurement case thus helps to locate strategically important points in the network where permanent monitoring of the low voltage makes sense. Flat gripping magnets make it particularly easy and quick to attach the measurement box for short-term use.
This basic product can be adapted to the requirements of different applications by specific additions. For example, we can also develop a solution for you that can measure up to 12 low-voltage feeders. In addition to 4G communication technology, a 450 MHz version (CDMA) is also available (LTE 450 is in preparation).
Perfect Combination
For optimised network operation in low voltage and use for intelligent local network stations.
In conjunction with the mobile SAE telecontrol case, BentoNet offers a load flow application for visualising low-voltage values independently of the control centre. Ordered pre-parameterised, only the SIM card needs to be activated and the station values can be viewed within minutes. The full telecontrol functionality, such as simultaneous transmission of medium-voltage data to the control centre, is of course retained.
Visualise load flow measurement in the low voltage
With the LoadFlow app from BentoNet, you can visualise the load flow measurement in the low voltage and receive warnings in the event of potential grid bottlenecks. The LoadFlow application visualises per outgoing circuit every minute:
- Voltages (3-phase)
- Currents (3-phase + neutral conductor)
- Current flow direction
- Active power
- Reactive power
- Apparent power
- cosphi
Various detailed views and flexibly adjustable diagrams are available for clear analyses. These allow you to view both current and historical data. Thanks to the implemented live view, you always have an overview of the current situation in your stations. All data can also be easily output via CSV.
Warnings when limit and threshold values are exceeded
Limit and threshold values can be defined for all currents and outputs. Various rules can be assigned to these so that warnings are issued if threshold values are exceeded. These exceedances are displayed for you in a detailed view and you can have the warnings sent to you via push notification. This means you won’t miss anything, even if you are not logged in. You can easily set the recipients of the push notifications in the app, and the responsibilities can be changed quickly and flexibly.
- Simple operation: A modern and intuitive interface provides a clear view of your data
- Data basis for better grid planning: Recognise where and how the load is changing; grid connection questions can be answered and implemented more quickly
- Increased grid security by recognising and tracking faults
- Better planning of equipment replacement
- Recognise grid bottlenecks at an early stage and avoid expensive repair costs
- View data anywhere: the app can be accessed via all common browsers, even when travelling (e.g. via tablet)
- Monitor influences on the grid, e.g. from electromobility and fluctuating generators
- Recognise unbalanced loads