SCADA system-What is a SCADA system?

SCADA system:

What is a SCADA system?

SCADA (Supervisory Control and Data Acquisition) systems, the full name is the data acquisition and supervisory control system. SCADA system from the date of the birth and development of computer technology are closely related. SCADA system to today has gone through three generations.

SCADA system is a computer-based process control and SCADA systems. SCADA system can be run on-site monitoring and control equipment, in order to achieve data acquisition, device control, measurement, parameter adjustment and a variety of signal alarm and other functions.

               
SCADA system is based on the first generation of dedicated computer and a dedicated operating system, SCADA system, such as electricity Automation Research Institute of North China Power Grid and the developer of the SD176 system in Japan, Hitachi remote electrification of China's railway system designed by H-80M system. This stage is applied to the SCADA system from the computer begins to 70 years.

SCADA system of the second generation is 80 years of general computer-based SCADA system in the second generation of SCADA system, VAX, and other widely used general-purpose computers, and other workstations, general-purpose operating system is generally the UNIX operating system. At this stage, SCADA dispatching automation system to run with the economic analysis, automatic generation control (AGC) and network analysis combined to form the EMS system (Energy Management System).

The first and second generation SCADA system is based on common characteristics of a centralized computer system, and the system does not have open, so system maintenance, upgrades, and networking with other pose great difficulties. 90 years in accordance with the principle of openness, based on a distributed computer network, and relational database technology to achieve large-scale network of EMS / SCADA system, known as third generation.

The fourth generation of SCADA / EMS systems have been or will soon have the basic conditions, is expected to be the early 21st century was born. The system's main features is the use of Internet technology, object-oriented techniques, neural network technology and JAVA technology and other technologies continue to expand the SCADA / EMS system and other systems integration, integrated safe and economic operation and commercial operation needs.

SCADA system in electrified railway remote control system applications has been a breakthrough technology, applications have rapid development. As the electric railway and power systems have different characteristics, the development of the SCADA system and power system is not exactly the same way. In the electrified railway remote control system has been established by the products I have developed HY200 own computer systems, and remote from the Southwest Jiaotong University developed DWY remote computer systems. These systems are reliable, powerful, electrified railway in ensuring security of electricity supply, improve the quality of power supply has played an important role in the electrification of the railway on the SCADA system applications denied.

The future development of SCADA system:

SCADA system in continuous improvement, continuous development of its technological progress have never stopped. Today, with the power system and SCADA system for railway electrification system needs improvement and development of computer technology, SCADA system for the new demands, in a nutshell, the following points:

1, SCADA / EMS system, extensive integration with other systems

SCADA systems are automated, real-time power system data source for the EMS system provide a lot of real-time data. At the same time in the simulation training systems, MIS systems will need to use the grid system in real-time data, real-time data without the power of information, all other systems have become the "baseless." Therefore, in this current decade, SCADA systems and other non-real-time how the connection to a SCADA system is an important research subject; now in the SCADA system has been successfully achieved with DTS (Dispatcher simulation training system),
Corporate MIS system connections. SCADA system and measurement of electric energy systems, geographic information systems, water distribution automation systems, scheduling, production automation systems and office automation system integrated into a SCADA system development.


2, substation integrated automation

The RTU, computer protection device as the core, the substation control, signals, measurement, billing and other loop into the computer system to replace the traditional control and protection panel, to reduce the substation footprint and investment in equipment to improve the two sub-system reliability. Substation integrated automation has become a relevant research topic, such as China's Dongfang Electronics has launch the product, but in railway electrification is still in research stage.

3, expert systems, fuzzy decision making, neural network research and application of new technologies

hese new technologies use a variety of simulated network running, and supporting the development of scheduling software and management decision-making software, expert systems based on different reasoning out the actual situation of the optimal operation mode or way out of failure to achieve a reasonable and economically scheduling for grid electricity, improve transport efficiency.


4, object-oriented technology, Internet technology, and JAVA technology