Abstract
PLC is the 80's developed a new type of electrical control devices, which brought about the
birth of the industrial control over a revolutionary. It will relay the traditional control technology
and computer control technology together with a flexible general-purpose, high reliability and
strong anti-interference ability, programming is simple, easy-to-use, powerful and easy to
implement, such as mechanical and electrical integration of significant advantages, has been
widely used in a variety of automatic control of industrial production process.
Coal power plant electricity production system is very important to the process of the
external auxiliary system, coal conveying control system with control equipment and more
complex processes, equipment and other features distributed along environmental conditions,
dust, humidity, vibration, noise, electromagnetic interference are more serious, traditional way of
strong centralized control of power can not meet the large-scale coal power plant automation
system, PLC controlled manner because of its advantages in large-scale coal power plant
systems have gradually replaced conventional strong centralized control of power the way to
become large-scale coal thermal power plant control system.
Coal-fired boiler transmission is an important part, how to ensure the reliability of
equipment and reduce operator and maintenance personnel working strength, enhance economic
efficiency, as a subject worthy of study. Programmable Logic Controller (PLC) is very fast in
recent years, with wide application to the microprocessor as the core, set computer technology,
automation technology, communication technology in one of the common industrial control
devices. It has a full-featured, easy to use, easy maintenance, high universality, high reliability
and high cost performance has been in various areas of industrial control has been a wide range
of applications, industrial automation has become a powerful tool and television industry as a
means of supporting the operation of equipment on-site video surveillance state, to replace the
traditional on-site inspection to ensure that the coal handling system is safe, reliable, efficient
and economic operation of the production.
Key words Power Plant, Real,Supplying Coal Control, Programmable Logic Controller .
