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Computer Controlled Generating Stations Control and Regulation Simulator

 
 
 

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DESCRIPTION

Unit designed to simulate the regulation behaviour of a hydroelectric generating station, as a didactic application with different aspects of regulation, control and simulation.
It is possible to work with this unit in 2 ways:

  • REAL mode (continuous or transient analysis).
  • SIMULATED mode.

The unit consists mainly of an interface for the conditioning of input and output signals. For its part, this one will be connected to the computer (through a SCSI wire and a data acquisition board) and to the two subsystems that we try to control:
Gate subsystem.
Turbine-generator subsystem.
The unit has (in the interface) some switches to establish different loads to the generator output and different conditions of the real system.

 

SPECIFICATIONS

 

  • SCE. Unit:

Bench-top unit.
Metallic box and main metallic elements in stainless steel. Diagram in the front panel with similar distribution to the elements in the real unit. It is possible to work with this unit in 2 ways:

  • REAL mode (continuous or transient analysis).
  • SIMULATED mode.

The unit consists mainly of an interface for the conditioning of input and output signals. For its part, this one will be connected to the computer (through a SCSI wire and a data acquisition board) and to the two subsystems that we try to control:
Gate subsystem.
Turbine-generator subsystem.
The unit has (in the interface) some switches to establish different loads to the generator
output and different conditions of the real system.
Gate subsystem:
It consists of a motor that controls the gate opening, and some mechanisms that
emulate it.
The control tension to command the gate’s motor will be range between 0 and 10 volts. The gate’s motor is coupled, by one side, to a dynamo, that will give us a signal proportional to its own rotating velocity, and by the other side to a reduction gear.The dynamo (Dynamo Gate) gives us a voltage that is proportional to the motor’s rotating velocity.Near the output of the reduction gear there is a potentiometer that gives us an output in volts proportional to the position where it is located, simulating the opening degree of the gate.Turbine-generator subsystem:
This subsystem will be analyzed separately or linked up with the previous one, achieving that the
motor that simulates the turbine turns according to the gate opening percentage.
This turbine is connected with a generator system and with a system of different loads (inductive, capacitive and resistive). Three loads in parallel are connected at the generator output, that simulate the consumption of the energy distribution system:
Variable resistance (270-770 W approx.).
Capacitance (1000 mF).
Inductance (100 mH).
Control interface.

  • DAB. Data Acquisition Board:

PCI Data acquisition board (National Instruments) to be placed in a computer slot. Bus PCI.
Analog input: Channels= 16 single-ended or 8 differential. Resolution=16 bits, 1 in 65536.
Sampling rate up to: 250 KS/s (Kilo samples per second). Input range (V)= 10V.
Data transfers=DMA, interrupts, programmed I/0. DMA channels=6.
Analog output: Channels=2. Resolution=16 bits, 1 in 65536. Max. output rate up to: 833 KS/s.
Output range(V)= 10V. Data transfers=DMA, interrupts, programmed I/0.
Digital Input/Output: Channels=24 inputs/outputs. D0 or DI Sample Clock frequency: 0 to 1 MHz.
Timing: Counter/timers=2. Resolution: Counter/timers: 32 bits.

  • SCE/CCSOF.Computer Control + Data Acquisition + Data Management + Simulation Software:

Compatible with actual Windows operating systems. Graphic and intuitive simulation of the process in screen.
Compatible with the industry standards.
Registration and visualization of all process variables in an automatic and simultaneously way. Flexible, open
and multicontrol software, developed with actual windows graphic systems, acting simultaneously on all
process parameters.
Management, processing, comparison and storage of data. Sampling velocity up to 250,000 data per
second guaranteed. Calibration system for the sensors involved in the process.
It allows the graphic representation in real time.
Comparative analysis of the obtained data and modification of the conditions during the process.
Open software, allowing to the teacher to modify texts, instructions. Teacher’s and student’s passwords
to facilitate the teacher’s control on the student, and allowing the access at different work levels.
This software has got 2 operating modes:
REAL mode: Through motors, actuators and sensors that the unit includes (continuos, transient).
SIMULATED mode: through the mathematical modelization of the motors ,previously mentioned.
This unit allows that the 30 students of the classroom can visualize simultaneously all results and
manipulation of the unit, during the process, by using a projector.

  • Cables and Accessories, for normal operation.

 

  • Manuals: This unit is supplied with 8 manuals: Required Services, Assembly and Installation, Interface and

Control Software, Starting-up, Safety, Maintenance, Calibration & Practices Manuals.

 

REQUIRED SERVICES

  • Electrical supply: single-phase, 220V/50 Hz or 110V/60 Hz.
  • Computer (PC).

 

DIMENSIONS & WEIGHT

  • SCE. Unit: -Dimensions: 405 x 350 x 250 mm. approx.
  • Weight: 15 Kg. approx.
  • PLC Module (PLC-PI): -Dimensions: 490 x 330 x 310 mm. approx.
  • Weight: 30 Kg. approx.