Three-phase voltage measurement up to the cable distribution board
Karlsruhe, February 6, 2025 – With another new development – the SMIGHT Grid2 Voltage Sensor – SMIGHT GmbH will enable three-phase voltage measurement, particularly in cable distribution cabinets (CDCs). The strong growth of PV systems in the low-voltage grid makes it increasingly necessary to monitor the voltage outside the local grid station. Seamlessly integrated into the overall SMIGHT solution, the product extension enables distribution grid operators to record and evaluate the grid status in the low voltage even more comprehensively using live measurement data.
Photovoltaic systems are already feeding over 60 GW of power into the German grid. This amount is set to almost double in a few years. This leads to a high feed-in power with high simultaneity – which is increasing rapidly. The further away the feed-in point, i.e. the PV system, is from the transformer, the more the voltage in the cable increases. Three-phase voltage measurement is becoming increasingly important, especially in cable distribution cabinets, in order to recognize this development in the grid and to be able to initiate countermeasures at an early stage in the event of an imminent violation of the voltage band.
Three-phase voltage, active and apparent power
This is precisely where the SMIGHT Grid2 Voltage Sensor product extension comes in: the device not only enables the monitoring of the voltage curve of all three phases, but also the calculation of the active and apparent power of the outgoing circuits and transformers under consideration. The information about the voltage is provided in the SMIGHT IQ Cockpit in addition to the outgoing current values with direction of flow, which are recorded in 4 phases and every minute. This gives grid operators a clear picture of their low-voltage grid.
The voltage sensor: a retrofittable multitool
The device establishes the connection to all three phase conductors using the CONLOX® connection system from Laniol. This only takes a few minutes. The Voltage Sensor integrates perfectly into the SMIGHT Grid2 plug-and-play measurement solution: it can be easily retrofitted into existing installations and is also used to supply power to the SMIGHT Grid2 Sensor Flex.
“With the SMIGHT Grid2 Voltage Sensor, we are taking intelligent grid monitoring to the next level,” says Oliver Deuschle, Managing Director of SMIGHT GmbH. “The Voltage Sensor is technologically a unique multi-tool that gives grid operators the opportunity to be flexible in its application and to analyze the grid status in even greater detail.”
Availability of the Voltage Sensor
The SMIGHT Grid2 Voltage Sensor can be ordered from E-world. A webinar on the Voltage Sensor will take place on February 26 at 11 a.m. Registration: SMIGHT Webinar zum Voltage Sensor
The Voltage Sensor will be presented live for the first time at E-world Energy & Water (February 11-13, 2025, Hall 5, Stand E112).