Optimal solutions to indoor temperature control problems for district heating systems in short supply conditions

In the modern-day automated district heating systems a lot of importance is attached to functional reliability of the heat generating units and pipeline networks to ensure uninterrupted supply of heat medium of expected quality and quantity. This is usually achieved by redundancy of both generating equipment and heat medium transport pipelines. However, such redundancy can not be provided for all systems as a consequence of technical or economic constraints. Therefore, during heating system accidents, it starts operating in the so called short supply condition. In this case, there is a need to redistribute heating energy between consumers, for example, according to their social significance. At the same time, in the general case, distribution among different-ranking consumers is disproportional with maximum possible maintenance of required temperature range for more significant consumers. Meanwhile it is required to distribute energy to among equal-ranking consumers in a proportionate manner. Distribution of this kind can be properly performed only on the basis of thermotechnical calculation. Such calculation can be promptly performed and implemented using automated district heating systems, whose control should be based on modeling and simulation. The article considers algorithms required for implementation of automation systems operating to the principle of buildings indoor temperature maintenance in short supply conditions of a heating system.