SCADA physical map
SCADA (Supervisory Control And Data Acquisition) systems, namely, data acquisition and supervisory control system. SCADA system applications is very broad, it can be used in power systems, water supply systems, petroleum, chemical and other fields of data acquisition and supervisory control and process control and other areas. Electrified railway in the power system and called on the remote system. SCADA system is based on computer-based process control and SCADA systems. It can be run on-site monitoring and control equipment to achieve data acquisition, device control, measurement, parameter adjustment and a variety of signal alarm and other functions. As various applications of SCADA requirements are different, so that different applications of SCADA system development is not the same.
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Development of Electric Power System Application Development Prospects 1. SCADA / EMS systems and the extensive integration of other systems 2. Integrated substation automation 3. Research and application of new technologies 4. Object-oriented, Internet, JAVA applications and power system leak monitoring systems used in electric power systems, SCADA systems most widely used, but also the most mature technology. As energy management system (EMS system) of a major subsystem, complete with information, improve efficiency, proper control system operation and speed up decision-making, can help quickly diagnose the system failure state and other advantages, has become a power dispatch is not lack of tools. Improve the reliability of its network operation, security and economic benefits, reduce the burden on dispatchers, to achieve power dispatching automation and modernization, to improve the efficiency and level of scheduling an irreplaceable role. Railway electrification in remote SCADA system on the application early, in ensuring the safety and reliability of electric railway power supply, improve the management of railway transport scheduling has played a significant role. Railway electrification SCADA system in the development process, with the development of computers, different periods have different products imported from China while a large number of SCADA products and equipment, which are driven Railway electrification system to more remote target development. SCADA in the oil pipeline project plays an important role, as in the order of system management control of the oil pipeline transportation, equipment monitoring, data synchronization, transfer records, monitoring stations along the pipeline and the control system operating conditions. The station of the station control system as the automatic control system on-site pipeline control unit, in addition to complete the task in which the monitoring stations, the same time responsible for the information transmitted to control centers and accept and implement its orders issued, and All of the data records stored. In addition to the basic functions of SCADA pipeline system now also have leak detection, system simulation, surge protection and other new features in advance. Development of SCADA (Supervisory Control and Data Acquisition) system, the full name of the data acquisition and supervisory control system. SCADA system since the date of the birth and development of computer technology are closely related. SCADA systems to today has gone through three generations. The first generation is based on the specific computer and operating system-specific SCADA systems, such as the Automation Research Institute, North China Power Grid Development SD176 system and Hitachi in Japan for China Railway Electrification remote control system designed by H-80M system. This stage is applied to the SCADA system from the computer starts to 70. The second generation of the 80 common computer-based SCADA system, in the second generation, the extensive use of VAX and other computers,
nike air force 1 high, and other general purpose workstations, operating systems are generally common UNIX operating system. At this stage, SCADA system in the power grid dispatching automation and economic operation analysis, automatic generation control (AGC) and network analysis combined together to form the EMS system (energy management system). First and second generation of SCADA system is based on common characteristics of centralized computer system and the system does not have open, so system maintenance, upgrades,
nike air force 1, and networking with other pose great difficulties. 90 in accordance with the principle of openness, based on the distributed computer network, and relational database technology to achieve a wide range of networking EMS / SCADA system, known as third generation. This phase is of SCADA / EMS systems of the fastest growing stages, the latest computer technology are brought together into the SCADA / EMS systems. This stage is also of the power system automation and power grid construction, the largest investment period, the state plans to invest 270 billion yuan next three years to transform the national power grid system can be seen on the power system automation and power grid construction, the degree of attention. The fourth generation of SCADA / EMS systems have been or will soon have the basic conditions, is expected to be the birth of the 21st century. The main features of the system is the use of Internet technologies, object-oriented technology, neural network technology and JAVA technology, technology, continue to expand SCADA / EMS systems and other systems integration,
air force one low, integrated safety and economic operation and commercial operation needs. SCADA system in the electrified railway system, the application of remote technology breakthrough has been made, the application also has a rapid development. The electrified railway and power systems have different characteristics in the development of SCADA systems and power system, the road is not exactly the same. Remote Control System in the electrified railway has been a mature product by my own research and development HY200 by remote computer systems and developed by the Southwest Jiaotong University, DWY remote computer systems. The system is reliable, powerful, and in ensuring the safety of electrified railway power supply,
air force one low nike, improve the quality of power supply has played an important role, on the SCADA system in railway electrification on the application be denied. Prospects for the development of SCADA system in the continuous improvement and development, its technological advances have never stopped. Nowadays, with the power system and SCADA system for railway electrification systems, and computer technology needs to improve the development of SCADA system for the new demands, in a nutshell, the following points: 1. SCADA / EMS systems and other systems are widely integrated power system automation SCADA system is real-time data source for the EMS system to provide a large number of real-time data. At the same time in the simulation training system, MIS system needs to use the grid system, real-time data, real-time data without the power of information, all other systems are to become Therefore, in this present decade, SCADA systems and other non-real time how the connection to a SCADA system, an important research topic; now in the SCADA system has been successfully achieved with the DTS (Dispatcher simulation training system), the enterprise MIS system connection. SCADA systems and electric energy metering system, geographic information systems, water distribution automation system, scheduling production automation systems and office automation systems integration into a SCADA system development. 2. Substation automation to RTU, computer protection device as the core, the substation control, signals, measurement, billing and other loops into the computer system to replace the traditional control of the screen, to reduce footprint and substations equipment investment, improve the reliability of the secondary system. Substation Automation has become a relevant research topic, such as China's Dongfang Electronics has launch the product, but in the electrification of the railway is still in the research stage. 3. Research and application of new technologies expert systems, fuzzy, neural network research and application of new technologies such as the use of these new technology to simulate a variety of running the grid, and supporting the development of scheduling software and management decision-making software, expert system, depending on the actual situation infer the optimal operation mode, or from failure of the methods to achieve a reasonable and economic manner grid power scheduling, to improve transport efficiency. 4. Object-oriented, Internet, and the application of JAVA object-oriented technology (OOT) is a network database design, market modeling and power system analysis software design the appropriate tools, object-oriented technology (OOT) used in SCADA / EMS systems trends. With the development of Internet technology, the browser interface has become the basic platform for desktop, browser technology used in the SCADA / EMS systems, the browser interface as the power grid dispatching automation system interface, the application of the expansion of the scope of real-time systems reduce the maintenance workload is very favorable; in a new generation of SCADA / EMS systems, MMI interface will retain the traditional, mainly for dispatchers to use the new Web server for additional non-real-time users to browse, after the unification of a people will gradually machine interface. JAVA language combines object-oriented technology and Internet technology, the combination of compiled and interpreted, strictly implement the four major characteristics of object-oriented: encapsulation, polymorphism, inheritance, dynamic binding, and multi-threading support and Security is better than C + +, and other features, JAVA technology will result in EMS / SCADA system, a revolution. SCADA monitoring system leak leak monitoring system (for example a pipeline) from the transmitter, server,
air force one shoes, remote clients, communication networks and other components, as shown in Figure A below. Long-distance pipeline is currently installed in the main transmitter on the pressure transmitter, flow transmitter temperature transmitter and several. It should be noted that none of the domestic installed at both ends of most of the pipeline flow transmitter. Communication within the system of information transmission network is the physical way. F9G to communicate with the top server and data transmission, remote client access to the database on the server and server 0 ') access are carried out through the communication network. The system can be based on local area networks, fiber optic and telephone lines, microwave and other types of communications, has a good ability to adapt. In addition, the system provides a 0 ') access, allows any one to establish a network connection with the server and installed ST or other web browser computer system can be 0') customers. The system is an oil pipeline in the online application has made remarkable achievements,
nike air force one high, the system has greatly enhanced the use and management of oil production level of automation for the oil to create a significant economic and social benefits. Atlas Atlas entry for more extended reading: 1
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