FiberStrike RTTR Module (Real Time Thermal Rating / Dynamic Cable Rating)
A software module that converts DTS temperature data and load data into real-time conductor temperature profiles and permissible ampacity ratings for power transmission and distribution cables.
Technical overview
RTTR continuously calculates conductor temperature from current load, load history and thermal conditions, and predicts maximum permissible load for steady state and emergency situations. The calculation uses thermal models of soil and ambient conditions along the cable with fast Kalman filter technology, and is based on IEC 60287, IEC 60853 and finite element modelling. It outputs conductor temperature profiles, steady-state ampacity and emergency ratings predicting maximum conductor temperature, emergency time or emergency current for up to one week ahead. Results interface to a load dispatch centre over Modbus TCP, IEC 61850 and IEC 60870-104.
Features
- Calculates conductor temperature profiles along power cables from DTS and load data
- Calculates steady-state ampacity, i.e. maximum permissible load
- Emergency ratings: real-time prediction of maximum conductor temperature, emergency time or emergency current
- Uses fast Kalman Filter technology
- Thermal rating of AC and DC circuits is supported
- Models single-core, three-core, sheathed cables, subsea composite cables, and concentric neutrals
- Seamlessly integrates into the FiberStrike software package with (pre-)alarms
Specifications
| Parameter | Value |
|---|---|
| Industry standards basis | IEC 60287, IEC 60853 and finite element modeling |
| Emergency rating prediction horizon | up to one week week |
| Load dispatch centre interface protocols | Modbus TCP, IEC 61850, IEC 60870-104 |
| Supported circuit types | AC and DC (HVAC and HVDC) |
| Modellable cable designs | single-core, three-core, sheathed cables, subsea composite cables, concentric neutrals |
Applications
- Power grid transmission line monitoring
- Distribution network ampacity optimisation
- HVAC and HVDC underground cable monitoring
- Submarine cable monitoring
- Comprehensive asset monitoring
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