DESCRIPTION AND SYSTEM POSSIBILITIES
This system includes a Electrical Control Desk that includes two touch screens and one normal screen, with computer and SCADA I system. A SCADA I System with computer control electronics and the proper software package for controlling the units of the system. All functions are done and controlled by SCADA I. The computer placed in the Electrical Control Desk is equipped with a PCI cards that manages the RS485/232 communication links between the SCADA I system and control, protection, measurement devices of power simulator, AVR and Vector Inverters. All the communication signals are distributed in six communication links. Each connector communicates the PCI cards with one external RS485 bus.
This HUB I will allow:
SCADA I is an industry-standard supervisory control and data acquisition (SCADA) software for realistic experience of power system control.
For use with APSS Simulator to increase students´ understanding of power systems.
It can connect to multiple generation systems for remote control and supervision of local generation and distributed generation.
It includes alarms and logs data for detailed analysis of APSS during stable and transient operation.
It communicates with programmable logic controllers (PLCs), power analyzers, numerical protection relays, automatic voltage regulators and primemover
simulation device of the Power System Simulator to control and collect information from the power system.
Includes high performance computer with integrated communication interface to exchange information with all devices.
Remotely controls the generator and prime-mover of the Power System Simulator in different power system operation control methods (frequency control,
voltage control, active power control, reactive power control, power factor control, generators load exchange).
The SCADA I connects to Power System Simulator (APSS) to train students in supervision and control of power systems.
The package includes industrial-standard SCADA software, a computer, colour printer and communications hardware.
EDIBON supplies the software already installed on the high performance computer. The software does several jobs, including remote control and data
display and logging. It includes programs written by EDIBON to match experiments which students have done directly with the Power System Simulator. The
software´s on-screen display or ´user interface´shows real-time data and mimics the circuit-breakers (opening and closing). It also mimics the adjustment
of the loads and any faults applied by the user. Other screens give details about the settings and data collected at each protection relay or instrument on the
Students select the correct screen for the experiment they want to perform. They then use the computer to close circuit-breakers, set and adjust any loads
and connect the grid supply (or start the generator) by mean of touch screens, in others words, they configure the topology of Power System Simulator.
The generators synchronization can be performed in manual and automatic mode with the help of SCADA I.
Students can use the software to log data from the simulator and analyse it, compare conditions before and after faults, and see the effects of faults. They
can use this information to predict power system problems and change the power system protection to prevent future problems.
The software includes the experiments already given with the Advanced Electrical Power System Simulator (APSS).
The experiments include:
SCADA I allows the control and supervision of the operations related to the generation, transformation, transmission and distribution of the electrical energy made by the APSS simulator.
Through a sophisticated interface, man-machine, executed in a high performance computer, it is possible to monitor and control a lot of events and alarmsas well as analyse, display and control the information acquired from all Programmable Logic Controllers (PLCs), Automatic Voltage Regulators (AVRs), power analyzers, protection relays and prime mover simulation device.
SCADA I system is connected to the PLCs communication networks, network analyzers, protection relays and the rest of the units of the APSS. Simulator, through high-speed physical buses RS485, allowing the data acquisition in real time from all the elements of the APSS. Simulator. The acquired data are stored for their future analysis or they are directly sent to screens connected to the computer as a visual information. The objective of the SCADA I developed architecture is centralising and automating all the control tasks, monitoring, protection and data acquisition of the APSS. Simulator is operated similar to local or central load dispatch center of Real Electrical Power System. The equipments connected to the SCADA I make one or some of the following functions:
SCADA I allows making a control, supervision and data acquisition in a centralised and remote way, simulating a central generation dispatch center. With help of SCADA I, students can observe the real time state of the electrical equipment of the APSS by means of graphical and state screens. With SCADA I, the operator of the electrical power system can monitor its state and consequently, it can act and make decisions about how to operate in different conditions. For example, when there is a sound or visual alarm, the operator can see what is happening in a SCADA screen, because the monitoring system includes an alarm sequences and events list of all the equipment operation, recordered throughout the practice period and can done, reports about a determined operation or about the complete practice. Another SCADA I facility is that it allows visualise in a central way all the instrumentation of the APSS. Simulator through several screens with digital and analogical virtual instruments. In the APSS. Simulator, several multifunctional and numeric protection relays are used, because the study of the electrical protections is an essential point for a electrical power system. The protection relays include measurement, communication and programmable logic possibilities to done functions of monitories and control of the equipment that are protecting. Thanks to these facilities, the protection functions are incorporated and managed from SCADA I, making the teaching of this subject easier in a automated and centralised way, because the students can communicate with each protection relay and managed it remotely.