Significance of high quality SCL data during the entire lifecycle of a protection, automation & control system

OPC has been widely applied to coal mine automation control system as an industry standard of communication between the field control substation and PC in the control system. In this paper, through the analysis and design for the transport system of coal mine belt conveyor, communication between the PC and S7-300 PLC is realized by using OPC technology. This paper gives the configuration scheme of OPC Server and develops the OPC Client program. The actual operation shows that the system is stable, reliable of communication and high of data real-time.

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A Control System for a High-Quality Generating Set Equipped With a Two-Shaft Gas Turbine

Journal of Engineering for Gas Turbines and Power ◽

10.1115/1.2906561 ◽

1991 ◽

Vol 113 (2) ◽

pp. 290-295 ◽

Cited By ~ 1

Author(s):

H. Kumakura ◽

T. Matsumura ◽

E. Tsuruta ◽

A. Watanabe

Keyword(s):

Control System ◽

Gas Turbine ◽

Gas Turbines ◽

High Quality ◽

Constant Frequency ◽

Generating Set ◽

Generating Sets ◽

Power Turbine ◽

Computer Centers ◽

Supply Systems

A control system has been developed for a high-quality generating set (150-kW) equipped with a two-shaft gas turbine featuring a variable power turbine nozzle. Because this generating set satisfies stringent frequency stability requirements, it can be employed as the direct electric power source for computer centers without using constant-voltage, constant-frequency power supply systems. Conventional generating sets of this kind have normally been powered by single-shaft gas turbines, which have a larger output shaft inertia than the two-shaft version. Good frequency characteristics have also been realized with the two-shaft gas turbine, which provides superior quick start ability and lower fuel consumption under partial loads.

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Cement Raw Mill Based on PCS7 and PROFIBUS Production Line Automation Control System

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.644-650.722 ◽

2014 ◽

Vol 644-650 ◽

pp. 722-725

Author(s):

Fan Wu

Keyword(s):

Control System ◽

Production Line ◽

Control Parameters ◽

Feed Composition ◽

Loop Control ◽

Automation Control ◽

Machine Speed ◽

And Control ◽

Control Layer ◽

Layer Control

A large cement factory as an example, according to the requirements of process and control parameters of production line of raw mill, this paper researches and designs the automatic control system of cement raw mill production line based on PCS7 and PROFIBUS. The design of the whole system consists of three levels: field layer, control layer and operation layer which are connected by Ethernet and PROFIBUS implementation, and focus on the design of the feed flow includeing feed composition, feed machine speed loop control etc. Through the on-site operation, the system is stable and reliable, and has good application and promotion effect.

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The Design of Automatic Control System for Greenhouse Based on Microcontroller

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.446-447.1188 ◽

2013 ◽

Vol 446-447 ◽

pp. 1188-1192

Author(s):

Xin Yu Sun

Keyword(s):

Control System ◽

Automatic Control ◽

Performance Test ◽

Scientific Basis ◽

Automatic Control Theory ◽

Output Efficiency ◽

Automation Control ◽

New Situation ◽

Greenhouse Control ◽

High Output

Recently, with the rapid agricultural application progress in China, greenhouse control issues have been better addressed. The greenhouse control technology, as an emerging technology, is increasingly being widespread attended, and is gradually walking in the direction of constructing good quality, high output efficiency agricultural systems. In this new situation, we need to carry out market research, carefully research the greenhouse automatic control theory based on SCM technology, and design automation control system with best effect. The performance test result shows: This new system has a good usable performance, while related technology can provide a scientific basis for further research in the future. Keywords.Microcontroller; greenhouse automatic control.

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