ABB SPTPS02 Turbine Protection Slave Module

ABB SPTPS02 Turbine Protection Slave Module

Basic Information

Weight & Dimensions: approx. 0.4kg, dimensions 17.8x5.1x33.0cm; also available in approx. 1.57kg, dimensions 3.45cm x 1.03cm x 2.5cm.

Place of Origin: Sweden.

Warranty: Usually supplied with a 12 month warranty.

Functional features

Overspeed protection: capable of monitoring the turbine speed, when the speed exceeds the overspeed protection OSP set value (typically 103% of rated speed) and the turbine power exceeds a minimum set value the generator oil switch opens and the module closes the high pressure regulator and the medium pressure regulator with the overspeed protection block to control the overspeed, this action is not affected by the actual speed of the turbine, but rather to prepare for the possibility of an expected overspeed.

Rapid trip protection: instead of, or in parallel with, the factory-configured electric motor tripping, it rapidly closes all the valves of the turbine when the turbine speed reaches 110% of the rated speed.

Low Pressure Shutdown: Operates in conjunction with the low pressure shutdown to energise the high pressure shutdown block to relieve all valve motor oil pressure, starting speed setting is the same as the low pressure shutdown setting.

Power imbalance monitoring: Compare the power (electrical load output) with the medium pressure cylinder discharge pressure (mechanical power input), when the mechanical power input of the steam engine exceeds the electrical load output by a set amount, it will show that there is a possibility of over speeding of the steam engine and the medium pressure regulator valve will be closed for a short period of time.

Working Principle

The module uses the processor and memory on the module board to process input data, such as turbine speed, power, medium-voltage cylinder discharge pressure, power imbalance, turbine trip and oil switch status signals, etc., and performs corresponding calculations and logical judgements to control the output signals, and at the same time communicates with the Infi 90 open control system through the expansion bus to transfer the relevant data to the multi-function processor.

Each module calculates the speed of the steam engine and generates the trip signals independently. The three modules together with the terminal unit determine the final outputs using a two out of three logic, all digital outputs are equipped with intermediate disconnectors, and the terminal unit outputs the analogue speed signals from the three modules in a triple-collection process and then outputs the winning signals.

Fields of application

Mainly used in turbine protection system, widely used in power, petrochemical, metallurgy and other industries for turbine control and protection, to ensure the safe and stable operation of the turbine.

Product Benefits

Flexible Configuration:

Supports a variety of configuration options, which can be configured to different input or output modes according to specific application requirements to meet different control needs.

High performance:

Featuring fast response and high accuracy, it can monitor and control digital signals in real time to ensure the stability and reliability of the system.

Equipped with an on-board 100Mbit/s Ethernet connection, communication between the controller, operator station and engineering workstation is faster and more reliable.

Modular design:

Adopting modular design, it is easy to install, maintain and expand, and can flexibly cope with control systems of different scale and complexity.

Communication interface:

Support common communication interfaces, such as Profibus, Modbus, etc., which can exchange data and communicate with other devices and systems.

Reliable and stable:

As a well-known brand of industrial automation, ABB's products have excellent quality and stability, ensuring stable operation of the equipment for a long time.

Memory & Security:

With 10MB of memory, of which 2MB is for battery backup, to ensure the safety of data and stable operation of the system.

Provides a key lock function to prevent unauthorised downloading of applications and firmware by locking the controller, enhancing the security of the system.

Compact Front Panel Display:

Equipped with a small front panel display that visually shows status and diagnostic information for easy monitoring and maintenance of the unit.