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Turbine governor
The turbine governor consisting of the hydraulic power unit (HPU) and the digital governor is the system which controls the hydro turbine in respect to speed and power.
The operation of the turbine governor must be guaranteed under all conditions, even with difficult ambient conditions. efficient remote functions are needed for fast and easy maintenance and service access.
The availability of the speed sensors, , and the accurate positioning of the servo-motor guarantee reliable operation and control of speed and power. In order to guarantee easy maintenance, the mechanical design features modular structure and reliable components. The design of the hydraulic power unit and the digital governor is based on international standards.
HIPASE-T
The turbine governor controls the forces when theunit converts the existing hydraulic energy into electrical energy in the most efficient way. It ensures stable speed of the turbine in no-load-operation as well as island-mode and guarantees the adherence of setpoint in grid operation.
The control algorithm considers the increased challenges for the digital turbine controller with regarding frequency and primary controlwhich are required by the ancillary services for the grid. The requirements of the different turbine types (Francis, Kaplan or Pelton) and sizes of the units are supported by a modular application concept.
In order to secure an easy interface to project specific requirements, the application board for turbine control contains all relevant types of in- and output signals.
Thus dedicated interfaces for speed sensors as well as generator voltage measurements for the speed measurement are foreseen. In addition, analog in- and outputs for the measurement of positions and CT/VT interfaces are available.
The analog outputs can be configured as voltage or current outputs with variable limits.
Hydraulic power unit (HPU)
ANDRITZ Hydropower offers complete oil hydraulic power unit (HPU) packages including sump tank, pumps, control and main relay valves, filters, monitoring devices, and pressure accumulators. The standard concept has a modular design with use of reliable industrial components and design pressure up to 250 bar.
Preferably we use selfSelf-regulating axial piston pumps for the main oil supply are preferred, but constant pumps (e.g. screw or gear type) with special pump control blocks can also be used.
Special hydraulic features needed for the turbine control - like pump control blocks, failsafe function on main relay valves, special shape of control edges on main relay valves, etc. - have been developed in order to guarantee maximum reliability and safety.
A series of standard, but tailor-made main relay valves are available for special applications on old low-pressure systems as well as on new turbines requiring high operating capacity.
The hydraulic system is designed together with the actuating elements, both for new plants and rehabilitation projects.
Digital turbine governor
ANDRITZ Hydropower turbine governors stand for flexible and reliable turbine control. The new challenges on grid stability are faced by means of the load frequency algorithm.
The digital turbine governor gets by with the functional requirements of the client because of a scalable and modular solution. It can be implemented as stand-alone solution or as integrated part of the existing structure. Preceding simulations and stability studies ensure stable and reliable control.
The governor performs different tasks during operation. Beginning with the start of the turbine on demand and stabilizing the speed for synchronization, it ensures stable load control when the unit is connected to the grid. Further tasks are supporting the grid frequency during primary control and fast reaction on load rejection and island detection. Due to the various requirements of the different operation modes, bump-less switching is vital for the turbine governor in order toto provide safe and preserving operation.
A variety of special functions are available related to the turbine type, e.g.
Flow calculation
Adaptive CAM optimization for Kaplan turbines
Surge control
Flush control for Kaplan turbines
Comprehensive operation with a high-resolution touch panel gives the operator the opportunity to interact with the turbine controller and to view all the status information on a central device. In addition, it allows local operation of the turbine within the defined limits.
Comprehensive services, spare part guarantees, and training classes complete our scope of delivery.
Our solutions are trusted worldwide, providing reliable and efficient automation systems that enhance productivity and sustainability. By automating hydropower plants, we enable operators to focus on strategic tasks, relying confidently that their systems are running smoothly and efficiently.
Partner with the leading experts in hydropower automation and experience the future of energy management today. With our comprehensive solution, you can harness the full potential of your hydro power plant, ensuring a sustainable and powerful energy source for generations to come.
Our integrated automation system brings numerous benefits to our customers. Whether it's new installations or refurbishments, we have the right solution for every situation. By leveraging modern technology, we ensure the best efficiency of hydro power plants by optimizing every aspect.
Our solutions are relied upon by customers around the globe catering to both small and large installations. This global reach guarantees that no matter the scale of your project, we can provide reliable and efficient automation systems that enhance productivity and sustainability.
Related links
Automation for the hydropower industryExcitation - Dynamics with brain powerProtection systems for safe operationsAutomation - Control Center SystemSynchronizing systemsTechnical training
Automation
Automation is the cornerstone of bringing turbines and generators to life, transforming potential energy into reliable power. Our advanced products monitor and control every aspect of the hydropower plant, ensuring maximum efficiency.
Excitation systems
The new and innovative HIPASE platform has especially been developed for the use in hydropower plants and covers excitation, protection synchronization and turbine controllers.
Protection systems
Electrical protection systems have to take on the task of damage containment in the event of overloading and/or a fault in the electrical equipment (generators, transformers, auxiliary systems, busbars, outgoing lead and cable units).
Control Center Systems
The control center systems of ANDRITZ HYDRO include 250 SCALA, SICAM, HYNET, video surveillance and power plant management.
Synchronizing systems
Paralleling of generators to power systems or one power system to another is a particularly tricky undertaking.
Technical Training
The ANDRITZ HYDRO technical training center provides courses for the products of ANDRITZ HYDRO automation. Training sessions can be held in the Vienna-based training center or on site.