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Distributed heating network monitoring system design and implementation

Author: WangWei
Tutor: WangWeiBing
School: Harbin University of Science and Technology
Course: Theory of computer software
Keywords: Distributed Control Heating Network Monitoring Configuration Software PLC control Heating network equalization control
CLC: TP273.5
Type: Master's thesis
Year: 2011
Downloads: 94
Quote: 3
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Abstract

With the rapid development of the national economy, China's northern cities, the demand for heating constant growth, heating scale accordingly expanded. At present, enterprises need to solve the heating problem is how to effectively monitor and manage the operation of heating network, how to improve the heating quality, and improve the heating quality while reducing energy consumption. This article from the perspective of engineering design to grasp the overall program, and the thermal network control technology requirements, equipment selection and function, and so do a comprehensive and detailed study and submit a complete set of design solutions. In the analysis of the status of domestic central heating and thermal control network based on a balanced summary of the main heating network control issue, this heating network control systems engineering aspects of the study's principal ideas, objectives and programs. Detailed analysis of the thermal network accused of process conditions and control requirements, according to the technological characteristics of heating network and system requirements, through a comparison of the control equipment and engineering research situation, choose to use Siemens PLC equipment as a heat exchange station master controller. Central control station using the configuration software of heating network monitoring system as the core platform, on this basis, to achieve automatic control systems, production processes and device status centralized monitoring and alarm functions. Communications network used to heat the advantages and disadvantages comparison, analysis, according to the heating network system control needs and engineering practice, selection is based on the PSTN dial-up access to means of communication, on this basis, given heating network monitoring communication system structure, elaborate heating network monitoring center computer networks and heat exchange station control network network network composition, network structure and realization method, complete central heating network controllers and data communication between the thermal stations, to ensure data exchange between the two to achieve the heating network monitoring system and the thermal station crew coordination operation. In analyzing heating network technology system operation mechanism and influencing factors, and for the nonlinear, large delay and strong coupling characteristics of the pipe network heat balance control algorithm, eventually using neural networks incomplete derivative PID control scheme for thermal station circulating pump and return water temperature is controlled to achieve a balanced heating heating pipe network adjustment. The neural network theory and incomplete differential PID control is applied thermal network equilibrium heating control, not only improves the system response speed is also guaranteed control accuracy. By heating network control system debugging, the heating network project to improve heating efficiency achieved the expected results.

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CLC: > Industrial Technology > Automation technology,computer technology > Automation technology and equipment > Automation systems > Automatic control,automatic control system > Computer control, computer control system
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