Pcc In The Substation Automation System-pcc, Substation - Electrical Industry - China Control Cable
Introduction With the development of national economy
, power capacity and the growing electricity load, power system automation and reliability have become increasingly demanding. Over the last decade, due to microprocessor technology and communications technology, in Power Systems Has formed a number of individual-based microprocessor technology, automation systems, as these systems continue to increase, many of the the shared data is still collected and treated separately, or their own, formed a month, "islands of automation", it not only increases a lot of hard and soft equipment investment, but also difficult to ensure consistency of data for each device. With the development of network technology, the late 80s, at home and abroad began to pay attention to addressing the "island" The question is in the station to full application of computer technology, full use of information resources to achieve greater system reliability and efficiency purposes, so-called "system integration." Integrated features include horizontal integration, including vertical integration of object-oriented layers, thus promoting the emergence of open systems platforms.Open systems platform means that part of the equipment system with international standards to provide a variety of interfaces, data sharing between computers, and the provision of common user-friendly interface. "Platform" thinking because of its good standardization and open than the more down over and over for everyone to accept.
The reliability of power system automation needs of people's attention " PLC "(Programmable logic controller) that high reliability and strong anti-interference technology industry. 90 since, PLC rapid development and application of LAN technology has matured, the product continued to serialization, standardization in the field of automatic control , a new generation of PLC to improve for the PCC (ProgammableComputerController) have gradually begun to dominance as the key technology to achieve automation in the power system is no exception.
PCC is a new generation of "programmable calculator control", is designed for applications in industrial environments designed for digital operation of electronic systems, a "user-oriented refers to this" so convenient programming; it directly by application in industrial environments, with stronger anti-interference capability, higher reliability, adaptability and broad scope of application; large-capacity storage capacity, standard communication interface, process-based system interconnect bus, high-level language development and runtime environment, self-diagnostic capabilities that have made for the PCC Transformer substation Automation provides the excellent and friendly "platform."
PCC in Substation Automation Here application of PCC
intelligent distributed systems used to achieve a power supply bureau of a 110KV substation example. Structural design of distributed systems by using open systems, hierarchical control and other advanced computer design, computer technology, communications and network technology, database technology, graphics and imaging technology, multimedia technology, data acquisition and control technology combined with organic together, mature technology, operation experience, to meet the functional requirements of the recent and long-term development needs. The design in accordance with International Standard IEC1000 90, ISO900l meet international standards. Put into operation from the scene since the stable, mature technology.
system capacity (including the long-term planning)
AI = 188 DI = 256 DO = 40 PI = 96 Overall system configuration diagram
Control part of the PCC module diagram
Diagram of substation automation system
First, the host computer and gateway modules substation intelligent distributed system architecture level.
by: gaga