关键词: 集中供热, 换热站, 现场总线, 在线监控

Abstract: Based on the Field-bus technology and PID fuzzy control technology, the on-line supervising system for the heat-exchanging stations of district heating system was developed. This system can realize the real-time on-line supervising for the main operating parameters of heat-exchanging stations with independently developed on-line supervisory software package, and can also realize data storing and analyzing, failures detecting and alarming either. The main operating parameters include temperature and pressure of primary steam network, temperature and pressure of water supply and back system of secondary network, and so on. This system can effectively help the managers of district heating system to monitor the local operating mode, and regulate major operating parameters. Therefore, the increases of the safety, stability and economy of district heating system can be achieved.

Key words: district heating system, heat-exchanging station, Field-bus, on-line supervising