Hydropower Plant Roth
Two separate, failure-prone control systems were consolidated into one centrally controlled plant for coordinated grid-parallel operation.
One control system for secure parallel operation
At a head of 5.2 m, the Roth plant processes approximately 5,000 l/s through two Francis turbines with asynchronous generators. Before modernization, the turbines were operated by two different, failure-prone control systems, making secure grid-parallel operation impossible.
LTA Hydro consolidated the plant in a central Siemens S7-1500 control system. The new solution includes fully automatic reactive-power control, remote access and a large HMI for clear, simple operation. The turbines can now operate in a coordinated, grid-parallel mode.
Hydraulic and civil-works functions were also integrated: the flood-protection system, articulated-arm trash-rack cleaner and level control now work together within the overall control system.
The result is markedly more stable operation and better use of the available water. Compared with previous years, the plant now achieves over 60% more yield.
- Control system: Both turbines consolidated in one Siemens S7-1500 control system with a large HMI.
- Grid connection: Fully automatic reactive-power control and coordinated grid-parallel operation.
- Waterway: Integrated articulated-arm trash-rack cleaner, flood-protection system and level control.
- Operation: Remote access, simpler operation and a substantial increase in yield.
