SCADA
What is a SCADA, SCADA system outlined
SCADA (Supervisory Control And Data Acquisition) systems, data acquisition and monitoring control system. SCADA System of a very wide field, it can be applied to power systems, water supply systems, petroleum, chemicals, and other fields of data acquisition and process control and monitoring control, and other areas. In the power system, as well as on the electrified railway known as telecontrol system.
SCADA system is computer-based production scheduling and process control automation systems. It can be run on-site equipment for the surveillance and control, in order to achieve data acquisition, control equipment, measurement, regulation and various parameters such as the signal alarm function.
Since each of the field of application of the SCADA requirements are different, so different applications of SCADA systems development not identical.
In the power system, SCADA system is most widely used, most mature technology development. As energy management system (EMS system), a major subsystem, a message integrity, efficiency, mastering system operations, speed up decision-making, can help rapid fault diagnosis system such advantages, it is not has become a power scheduling indispensable tool. It improve the reliability of power grids, security, and economic efficiency, reduce the burden on dispatchers to achieve power scheduling automation and modernization, improving the efficiency and level of control in the area plays an irreplaceable role.
Railway electrification in the SCADA system telecontrol application earlier, in ensuring the safety of the railway electrification reliable power supply, improve the regulation and management of railway transportation has played a significant level of the role. Railway electrification in the SCADA system in the development process, with the development of computer, and different times have different products at the same time our country has also introduced from abroad a lot of SCADA products and equipment, which have driven the railway electrification telecontrol system to a higher development goals.
2. SCADA system development process
SCADA (Supervisory Control and Data Acquisition) system, called the Data Acquisition and Control System surveillance. SCADA systems since the date of birth on the development of computer technology and closely related. SCADA systems development today has gone through three generations.
The first generation is based on the special-purpose computers and operating system for SCADA systems, such as the power to the Institute of Automation SD176 development of the North China Power Grid System and Japan's Hitachi for China's railway electrification telecontrol system designed by H-80M system. This stage is from the SCADA computer system used to start the 1970s.
Second generation of the 1980s based on a general computer SCADA system, in the second generation, and other widely used VAX computer, as well as other general-purpose workstations, operating systems is generally common UNIX operating system. At this stage, the SCADA system in the power grid control and automation in the economic operation of automatic generation control (AGC), as well as to network with a combination of the EMS system (EMS). The first generation and second generation of SCADA system is based on the common characteristics of a centralized computer system, and do not have an open system, which system maintenance, upgrades, as well as a great networking with other difficulties.
The 1990s in accordance with the principle of openness, based on the distributed computer network and relational database technology to achieve large-scale networking EMS / SCADA system, known as the third generation. This stage is my SCADA / EMS systems of the fastest growing stage, the latest computer technology are pooled into the SCADA / EMS systems. This stage is also China's electric power system automation, as well as the construction of power grids largest investment period, the national plans within the next three years investment of 270 billion yuan in urban and rural power grids that country on the power system automation and the importance of building power grids.
The fourth generation of SCADA / EMS system is based on conditions or to be ready, and is expected to be the birth of the early 21st century. The system is the main features of Internet technology, object-oriented technology, neural network technology and JAVA technology, and other technologies, to continue to expand SCADA / EMS systems and other systems integration, comprehensive security and economic operation in commercial service needs.
SCADA System in the electrified railway telecontrol system of technical breakthrough progress has been made, the application is also a rapid development. The electrified railway and power systems have different characteristics in the SCADA system and the development of the electric power system is not exactly the same road. Railway electrification in the remote system is ripe for the products from my own developed HY200 remote computer systems, as well as from Southwest Jiaotong University DWY development of the remote computer systems. These systems are reliable and powerful, guarantee the electrified railway power supply security, and raising the quality of power supply has played an important role on the SCADA system in the application of railway electrification功不可没.
3. Looking SCADA System SCADA system in the development of continuous improvement, and development, technological advances have never stopped. Today, as the power system, as well as railway electrification system SCADA system needs improvement and the development of computer technology for the SCADA system put forward new demands, in a nutshell, are the following:
1. SCADA / EMS systems and other systems extensive integration
SCADA system is the real-time power system automation data source for the EMS system to provide a large number of real-time data. At the same time in a simulated training system, MIS systems and other systems used in the power grid needs real-time data, and do not have this information real-time data grid, all the other systems have become "passive water." Therefore, in this current decade, SCADA system and how other non-real-time SCADA system connections of the important topics now in the SCADA system has been successfully achieved and DTS (dispatcher training simulation system), Enterprise MIS connectivity. SCADA system and the electric energy measurement systems, geographical information systems, water control automation systems, automated production scheduling system, as well as office automation systems integration as a SCADA system development direction.
2. Substation Integrated Automation
To RTU, PC protection device at the core, will substation control, signals, measurement, such as billing loop into the computer system to replace the traditional control screen protection, to reduce the area substation and equipment investment, to raise the The reliability of the system. Integrated substation automation has become relevant research topics, such as China's Dongfang Electronic Corporation has introduced corresponding products, but also in the railway electrification in the research stage.
3. Expert systems, fuzzy decision-making, such as neural network research and applications of new technologies
Use these new technologies various simulated network operations, and develop software and scheduling support management decision-making software, expert system under different from the actual situation of reasoning the optimum operating mode or by failure of ways to achieve a reasonable and economically Scheduling for the power grids, improve transport efficiency.
4. Object-oriented technology, Internet technology, and JAVA technology applications
Object-Oriented Technology (OOT) is a network database design, market model power system analysis software design and the appropriate design tools, object-oriented technology (OOT) applied SCADA / EMS system is the development trend.
With the development of Internet technology, the browser desktop computer interface has become the basic platform will be used in browser technology SCADA / EMS system, browser interface dispatching automation systems, as the man-machine interface, real-time system to the expansion of the scope of the application and reduced maintenance workload very favorable in the next generation of SCADA / EMS system, the traditional MMI interface will be retained, primarily for the use of scheduling, the newly created Web server for the non-real-time users to browse and will be gradually unified as a people Machine Interface.
JAVA language integrated object-oriented technology and Internet technology, will be compiled and interpreted organic integration, object-oriented strictly to achieve the four characteristics: encapsulation, polymorphism and inheritance, dynamic of the series, and multi-threaded support and security better than C + +, as well as many other features, JAVA technology will lead to EMS / SCADA System of a revolution
SCADA (Supervisory Control And Data Acquisition) systems, data acquisition and monitoring control system. SCADA System of a very wide field, it can be applied to power systems, water supply systems, petroleum, chemicals, and other fields of data acquisition and process control and monitoring control, and other areas. In the power system, as well as on the electrified railway known as telecontrol system.
SCADA system is computer-based production scheduling and process control automation systems. It can be run on-site equipment for the surveillance and control, in order to achieve data acquisition, control equipment, measurement, regulation and various parameters such as the signal alarm function.
Since each of the field of application of the SCADA requirements are different, so different applications of SCADA systems development not identical.
In the power system, SCADA system is most widely used, most mature technology development. As energy management system (EMS system), a major subsystem, a message integrity, efficiency, mastering system operations, speed up decision-making, can help rapid fault diagnosis system such advantages, it is not has become a power scheduling indispensable tool. It improve the reliability of power grids, security, and economic efficiency, reduce the burden on dispatchers to achieve power scheduling automation and modernization, improving the efficiency and level of control in the area plays an irreplaceable role.
Railway electrification in the SCADA system telecontrol application earlier, in ensuring the safety of the railway electrification reliable power supply, improve the regulation and management of railway transportation has played a significant level of the role. Railway electrification in the SCADA system in the development process, with the development of computer, and different times have different products at the same time our country has also introduced from abroad a lot of SCADA products and equipment, which have driven the railway electrification telecontrol system to a higher development goals.
2. SCADA system development process
SCADA (Supervisory Control and Data Acquisition) system, called the Data Acquisition and Control System surveillance. SCADA systems since the date of birth on the development of computer technology and closely related. SCADA systems development today has gone through three generations.
The first generation is based on the special-purpose computers and operating system for SCADA systems, such as the power to the Institute of Automation SD176 development of the North China Power Grid System and Japan's Hitachi for China's railway electrification telecontrol system designed by H-80M system. This stage is from the SCADA computer system used to start the 1970s.
Second generation of the 1980s based on a general computer SCADA system, in the second generation, and other widely used VAX computer, as well as other general-purpose workstations, operating systems is generally common UNIX operating system. At this stage, the SCADA system in the power grid control and automation in the economic operation of automatic generation control (AGC), as well as to network with a combination of the EMS system (EMS). The first generation and second generation of SCADA system is based on the common characteristics of a centralized computer system, and do not have an open system, which system maintenance, upgrades, as well as a great networking with other difficulties.
The 1990s in accordance with the principle of openness, based on the distributed computer network and relational database technology to achieve large-scale networking EMS / SCADA system, known as the third generation. This stage is my SCADA / EMS systems of the fastest growing stage, the latest computer technology are pooled into the SCADA / EMS systems. This stage is also China's electric power system automation, as well as the construction of power grids largest investment period, the national plans within the next three years investment of 270 billion yuan in urban and rural power grids that country on the power system automation and the importance of building power grids.
The fourth generation of SCADA / EMS system is based on conditions or to be ready, and is expected to be the birth of the early 21st century. The system is the main features of Internet technology, object-oriented technology, neural network technology and JAVA technology, and other technologies, to continue to expand SCADA / EMS systems and other systems integration, comprehensive security and economic operation in commercial service needs.
SCADA System in the electrified railway telecontrol system of technical breakthrough progress has been made, the application is also a rapid development. The electrified railway and power systems have different characteristics in the SCADA system and the development of the electric power system is not exactly the same road. Railway electrification in the remote system is ripe for the products from my own developed HY200 remote computer systems, as well as from Southwest Jiaotong University DWY development of the remote computer systems. These systems are reliable and powerful, guarantee the electrified railway power supply security, and raising the quality of power supply has played an important role on the SCADA system in the application of railway electrification功不可没.
3. Looking SCADA System SCADA system in the development of continuous improvement, and development, technological advances have never stopped. Today, as the power system, as well as railway electrification system SCADA system needs improvement and the development of computer technology for the SCADA system put forward new demands, in a nutshell, are the following:
1. SCADA / EMS systems and other systems extensive integration
SCADA system is the real-time power system automation data source for the EMS system to provide a large number of real-time data. At the same time in a simulated training system, MIS systems and other systems used in the power grid needs real-time data, and do not have this information real-time data grid, all the other systems have become "passive water." Therefore, in this current decade, SCADA system and how other non-real-time SCADA system connections of the important topics now in the SCADA system has been successfully achieved and DTS (dispatcher training simulation system), Enterprise MIS connectivity. SCADA system and the electric energy measurement systems, geographical information systems, water control automation systems, automated production scheduling system, as well as office automation systems integration as a SCADA system development direction.
2. Substation Integrated Automation
To RTU, PC protection device at the core, will substation control, signals, measurement, such as billing loop into the computer system to replace the traditional control screen protection, to reduce the area substation and equipment investment, to raise the The reliability of the system. Integrated substation automation has become relevant research topics, such as China's Dongfang Electronic Corporation has introduced corresponding products, but also in the railway electrification in the research stage.
3. Expert systems, fuzzy decision-making, such as neural network research and applications of new technologies
Use these new technologies various simulated network operations, and develop software and scheduling support management decision-making software, expert system under different from the actual situation of reasoning the optimum operating mode or by failure of ways to achieve a reasonable and economically Scheduling for the power grids, improve transport efficiency.
4. Object-oriented technology, Internet technology, and JAVA technology applications
Object-Oriented Technology (OOT) is a network database design, market model power system analysis software design and the appropriate design tools, object-oriented technology (OOT) applied SCADA / EMS system is the development trend.
With the development of Internet technology, the browser desktop computer interface has become the basic platform will be used in browser technology SCADA / EMS system, browser interface dispatching automation systems, as the man-machine interface, real-time system to the expansion of the scope of the application and reduced maintenance workload very favorable in the next generation of SCADA / EMS system, the traditional MMI interface will be retained, primarily for the use of scheduling, the newly created Web server for the non-real-time users to browse and will be gradually unified as a people Machine Interface.
JAVA language integrated object-oriented technology and Internet technology, will be compiled and interpreted organic integration, object-oriented strictly to achieve the four characteristics: encapsulation, polymorphism and inheritance, dynamic of the series, and multi-threaded support and security better than C + +, as well as many other features, JAVA technology will lead to EMS / SCADA System of a revolution
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