Research On The Regulation And Dispatch Of Ring-shaped Heat-supply Network With Double-heat Sources

The research content of this paper is related to the unidirectional ring-shaped heat-supply network, including its thermal accessibility, the operation adjustment, as well as the optimization of unidirectional ring-shaped heat-supply network with double-heat sources.Through the definition of thermal accessibility and the thermal model of unidirectional ring-shaped network, this passage carried out the corresponding calculations of the temperature of each heating station in the network. The temperature characteristic of unidirectional ring-shaped network is pointed out, according to its temperature characteristic, the calculation formulas is illustrated to judge the thermal accessibility of the network. In this paper, the block diagram is applied to express the problem visually and directly.For the traditional pipeline system, X-adjustment is defined and pointed out to summarize traditional operation adjustment. Through the example of Harbin, the analysis proves that X-adjustment is more applicable and it can achieve a wide range of energy-saving, and this will have great significance to the expansion of the network. The operation adjustment of the unidirectional ring-shaped heat-supply network is different from the traditional one. Its operation adjustment has been studied and the formula of the temperature adjustment under different adjustment method is obtained. Combined the operation adjustment with the characteristic of the unidirectional ring-shaped heat-supply network, the paper gives the principle of the network with double-heat sources and the operational formula of its water temperature.Based on the temperature characteristics and meeting the thermal accessibility, the heat load of thermal stations between the heating sources can be simplified. Putting forward a way to evaluate the optimization dispatching of the two heat sources unidirectional ring network. While using the concept of stro ngpoint and establishing the objective function based on economy and environment, the optimal operation of the heat source were studied.Through a specific example of the network, its thermal accessibility is judged. The economy and pollutants consumption are calculated in schemes of its heat-source optimal operation. Under different schemes, the economic and environmental conditions are considered in order to determine the final strongpoint. And use the final strongpoint to acquire the best scheme of the optimal operation of the example.