AEL-CPSS-01S Smart Grid Power System with Power Generation, Transmission, Distribution and Loads, with SCADA

SMART GRID POWER SYSTEM WITH POWER GENERATION, TRANSMISSION, DISTRIBUTION AND LOADS, WITH SCADA - AEL-CPSS-01S

INNOVATIVE SYSTEMS

The Smart Grid Power System Application, with Automatic Control Generation, Transmission Line and Loads, with SCADA, "AEL-CPSS-01S", has been designed by Edibon for the training at both the theoretical and practical levels in the field of Power Generation, Transmission, Distribution, Consumption, protections relays and Micro-Grids Power Systems.

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General Description

The Smart Grid Power System Application, with Automatic Control Generation, Transmission Line and Loads, with SCADA, "AEL-CPSS-01S", has been designed by Edibon for the training at both the theoretical and practical levels in the field of Power Generation, Transmission, Distribution, Consumption, protections relays and Micro-Grids Power Systems.

The AEL-CPSS-01S application provides several levels of training to give the user full knowledge and experiences about the most important principles of control, operation and functioning of Generation, Transmission, Distribution and Load Consumption. For this purpose, this application includes a specific manual, which explains at theoretical level the subjects relating to high voltage power systems. The thematic of the manual covers from basic principles of functioning, control and operation of electric generators and energy transmission up to energy consumption. On the other hand, it is provided a series of modules to put into practice all theoretical concepts previously studied in this manual.

One of the advantages of this application is its modularity and flexibility. This allows carry out different real power systems configurations. For example, the user can configure the classical power system formed by "Generation + Transmission/Distribution + Consumption" or he can configure a Micro-Grid with "Generation + Consumption" working in stand-alone too. At any moment the user can synchronize the electric generator with the laboratory mains and he can develop a real energy distribution network.

In functional terms the whole system can be controlled either locally through the operation of switches, breakers and signals, and remotely through Data Acquisition and Control Software.

The AEL-CPSS-01S application includes a Data Control and Data Acquisition Software (AEL-CPSS-01S/CCSOF) for remote control of the power system. The SCADA control software allows carrying out the most important operations of real power systems such as speed and voltage control of the turbine and synchronous generator, coupling maneuvers of the generator with the mains (synchronization), stand-alone operations with the generator, loads commutation, current and voltage measurements in different points of the power system, etc.

The following is a description of the most important modules included in this application:

Generator Protection and Control Relay Unit

It is an industrial control and protection device of power generator groups with more than 150 configurable variables. The Relay Unit provides different levels of access to be configured. For example, the user can adjust the protection thresholds of overcurrent (50/51), over/under-voltage, over/under-frequency (81), inverse power, over/underspeed of the turbine (12), number of poles of the machine, nominal power, etc. In addition, for more advanced settings, it is possible to set the PID control system parameters under different operation conditions of the turbine-generator group. For example, when the generator is working in stand-alone or in parallel operation modes are used different PIDs. During commissioning of generator the provided software allows monitoring voltage and frequency PID signals, perturbations, analysis and real time settings.

During motor-generator group start-up, it is possible to monitor the PID signals, to analyze the generator disturbances and to remake real time setting adjustments through the provided relay configuration software.

Due to the versatility of the Generator Protection and Control Relay Unit, Edibon provides configured this device to work properly from scratch with the generator-motor group. In addition, it is provided a relay setting file to restore the relay to the initial configuration. On this way, the user can change any relay parameter and recovery the initial setting.

Turbine Speed Controller

This device allows controlling manually and automatically the turbine speed. Manual control allows the user to manage the turbine speed through a potentiometer included in this module. On the other hand, automatic control function is carried out by the Generator Protection and Control Relay unit with an analog signal of 0-10V. On this way, the user can either study the whole system operations working autonomously, as a real power station works, or taking the manual control of the system to study the effects of the turbine speed changes in the electrical system.

Automatic Voltage Regulator

This device is designed for manual and automatic control of the current excitation of the synchronous generator. The regulator has a switch that allows the user to select the control mode. If manual control mode is selected, the current excitation of the synchronous generator can be controlled manually with a potentiometer and the effects of the generator output voltage can be seen. Automatic control mode allows the Generator Protection and Control Relay Unit to take the control of the current excitation.

On this way, the user can study the operation of the complete system working autonomously, as a real power station works, or he can take the control of the installation to study the effects of the excitation change of the synchronous generator in the electrical system.

Transmission Line Simulation Module

This module represents basic concepts of the electric energy high-voltage three-phase transmission lines operation. It consists of resistors, inductances and capacitances that can be configured to simulate different transmission lines. Each one of the phases is represented following the concentrated parameters theoretical model, through a resistance series association and inductances, along with a parallel association between each one of them in a capacitance effect. In addition this module has several switches to provoke one, two or three broken lines to study unbalance effects in the electrical system.

Network Analyzer Unit with Data Acquisition

This device allows measuring all electrical parameters of the synchronous generator such as phase and line voltages, line currents, active, reactive and apparent powers, frequency, harmonics, etc.

Three-Phase bank of Commutable Resistors Module

This module is designed in order to carry out local consumption of the generated energy by the synchronous generator. This module has three switches to introduce three active power consumption stages. In addition, this loads module can be controlled from the SCADA.

Three-Phase bank of Commutable Inductances Module

This module is designed in order to carry out local consumption of the generated energy by the synchronous generator. This module has three switches to introduce three reactive power consumption stages. In addition, this loads module can be controlled from the SCADA.

Analog instrumentation module to measure Active and Reactive Powers, Frequency and Current excitation of the generator.

Faults injection module

This module allows to inject different kind of faults such as single-pole short circuit, two-pole short circuit and three-pole short circuit. All these faults can be injected with and without impedance.

The AEL-CPSS-01S application includes the following elements:

  • N-ALI01. Industrial Main Power Supply. N-PPIM2. Instrumentation Module 2. N-PPCM1. Control and Protection of Turbine-Generator Group Module 1. N-PSUB3. Power Generation Substation Module 3. N-EALD. Network Analyzer Unit with Data Acquisition (2 units). N-BUS08. Distribution Busbar Module (4 units). N-BUS09. Coupling Busbar Module. N-REG16. Voltage Regulation Module 1. TRANS3/5KRM. Three-Phase Autotransformer with Motor Voltage Regulator , 400/400VAC, 5KVA. TRANS3/5KGR. Grid Transformer, 400/400 VAC, 5 kVA. TRANS3/5KSU. Three-Phase step-up Transformer, 400/400 VAC, 5 kVA. N-ERP-MF01. Digital Fault Simulator Module. N-AE1CD. Transmission Lines Simulation Digital Unit. N-CAR35T3D. Three-phase Digital Bank of Commutable Resistors Module. N-CAR36T3D. Three-phase Digital Bank of Commutable Inductances Module. N-CAR19T3D. Three-phase Digital Bank of Commutable Capacitors Module. GMG4.5K3PH. 4.5 kW Generator-Motor group. AEL-WBMP. Electrical Workbench (Mobile Small). AEL-WBMG. Electrical Workbench (Mobile Big). AEL-PC. Touch Screen and Computer.

Recommended elements:

  • N-ERP-MA01. Feeder Management Relay Module. N-ERP-PD01. Distance Protection Relay Module. N-ERP-SFT01. Overcurrent and Earth Fault Protection Relay Module. N-PSM. Power Switch Module.

This application is supplied with the EDIBON Computer Control System (SCADA), and includes: The unit itself + Computer Control, Data Acquisition and Data Management Software Packages, for controlling the process and all parameters involved in the process.

Exercises and guided practices

GUIDED PRACTICAL EXERCISES INCLUDED IN THE MANUAL

  1. Study of generation, transmission and distribution power systems.
  2. Analysis of the measurements of the power flows of the synchronous generator, transmission lines and loads.
  3. Analysis of the active and reactive power of the synchronous generator againts load variations.
  4. Automatic synchronization maneuvers of synchronous generator with the mains.
  5. Study of the synchronous generator in island operation mode.
  6. Study of the Micro-Grids.
  7. Study of the synchronous generator in grid parallel operation mode.
  8. Study of excitation/voltage regulation of synchronous generator in island mode.
  9. Study of turbine regulation (frequency control) in island mode.
  10. Study of excitation/voltage regulation of synchronous generator in parallel grid operation mode.
  11. Study of turbine regulation (frequency control) in parallel grid operation mode.
  12. Study of the power factor regulation of synchronous generator in parallel grid operation mode.
  13. Analysis and calculus of energy loses in transmission line according to the line electrical parameters.
  14. Capacitive effect influence in transmission lines.
  15. Analysis of the reactive energy excess in transmission lines.
  16. Analysis of the influence of one or more line losses in the electric system.
  17. Power factor compensation and the effects in the power system.
  18. Single-Pole, Two-Pole and three-Pole faults with and without impedance.
  19. Double busbar coupling maneuver.
  20. Operation logic with circuit breakers and disconnectors in a double busbar substation.
  21. Load sharing with different feeders.
  22. Busbar changeover without interruption

MORE PRACTICAL EXERCISES TO BE DONE WITH THE UNIT

Some practical exercises possibilities with the SCADA:

  1. Remotely control of generation power systems.
  2. Analysis with the SCADA software of synchronous generator power flows.
  3. Analysis with SCADA software of active and reactive power of synchronous generator.
  4. Remotely control of manual synchronization of synchronous generator with the mains.
  5. Remotely control of automatic synchronization of synchronous generator with the mains.
  6. Remotely control of synchronous generator in island grid operation mode.
  7. Study of Micro-Grids.
  8. Remotely control of synchronous generator in parallel grid operation mode.
  9. Remotely control of excitation/voltage regulation of synchronous generator in island mode.

Other possibilities to be done with this Unit:

  1. Many students view results simultaneously. To view all results in real time in the classroom by means of a projector or an electronic whiteboard.
  2. The Computer Control System with SCADA allows a real industrial simulation.
  3. This unit is totally safe as uses mechanical, electrical and electronic, and software safety devices.
  4. This unit can be used for doing applied research.
  5. This unit can be used for giving training courses to Industries even to other Technical Education Institutions.
  6. Several other exercises can be done and designed by the user.

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