A control strategy for energy optimal operation of a direct district heating system

被引：19

作者：

Li, LZ ^{[1
]}

Zaheeruddin, M ^{[1
]}

机构：

[1] Concordia Univ, Dept Bldg Civil & Environm Engn, Montreal, PQ H3G 1M8, Canada

来源：

INTERNATIONAL JOURNAL OF ENERGY RESEARCH | 2004年 / 28卷 / 07期

关键词：

direct district heating system; transport time delay; Smith predictor controller; simulation; optimal operation; energy conservation;

D O I：

10.1002/er.987

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

A dynamic model of a direct district heating system (DDHS) is developed, and an energy optimal control strategy is designed. The DDHS is characterized as a system with long transport time delay. The use of a Smith predictor (SP) to deal with this type of time delay is explored. An SP is designed by using the reduced-order dynamic model and implemented on the full-order model. Also, optimal set point profiles of supply water temperature as a function of outdoor air temperature have been determined. The simulation results show that the SP works effectively in disturbance rejection compared with the nominal control design. The use of optimal set point control strategy resulted in energy savings of the order of 19-32% when the influence of internal load was considered. Copyright (C) 2004 John Wiley Sons, Ltd.

引用

页码：597 / 612

页数：16

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