More bang for your buck.

By allowing you to safely operate your transmission network at its true thermal limit, FORM helps you to unlock the full potential of your transmission assets in a rapid and cost-effective manner.

What we’re all about.

Practical experience  has shown that FORM can increase the transmission capacity of an overhead line by up to 50% under favorable weather conditions.

FORM combines various fiber optic technologies that capture the ambient weather parameters for each section of a transmission line, thus providing unprecedented accuracy and transparency in determining the maximum power that can be safely transmitted. By exclusively using the line‘s existing fiber optic infrastructure (OPGW) for data communication, FORM is easy to configure, protected against cyber­attacks, and immune to electromagnetic inter­ference.

No more line-mounted sensors or weather stations along the transmission route!

Maximum performance at minimum OpEx

• Real-time measurement of wind speed
• No energy supply or communication hardware needed
• All measurements communicated exclusively with fiber-optics via OPGW
• All active monitoring equipment (RM-Wind Interrogator) housed in substation

FORM determines and forecasts the conductor temperature of each span within a circuit and hence minimizes risks when operating a line above its static rating limit.

Critical sections (i.e., the spans within a line that are the hottest or sag the most) may be hard to predict because they change over time, but FORM's high-resolution temperature measurements along the entire line allow for fast and accurate detection. 

Each have differing levels of conservatism that enable the TSO to choose the right balance between capacity gains – which range anywhere from 5% to 50% – and discrepancies in forecasted and real-time ratings. 

FORM Basic package: Ambient Adjusted Rating (AAR)

Our AAR calculations are based on air temperature forecasts provided by a third-party weather service. Conservative values are used for the solar irradiance and wind. AAR forecasts can be provided up to 72 hour in advance. 
Capacity gains of 5% relative to static ratings are to be expected.

FORM Smart package: Ambient Adjusted Rating + using Solar forecast (AAR+)

If uncertainties in wind forecasts are a challenge for your optimal dispatch planning, then AAR+ is the perfect line rating methodology for you. AAR+ is an elegant solution based on updated values of air temperature and solar irradiance with conservative static values assigned for the wind. Because predicting if the sun will be shining is easier than pinpointing wind speed and direction, AAR+ reduces unwanted discrepancies between forecasted and real-time ratings relative to DLR. You can expect capacity gains of up to 10% relative to AAR. 

FORM Plus package: Dynamic Line Rating (DLR)

DLR with FORM provides the most ultimate capacity gains. We use updated values of air temperature, solar irradiance, wind speed, and wind direction to calculate the true thermal capacity of every span within the transmission line. Our experience has shown capacity gains of up to 50% relative to AAR are possible.