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Urban heating system heating network regulating method and system based on mechanism model prediction control

An adjustment method and heat network technology, applied in heating systems, space heating and ventilation details, household heating, etc., can solve the problems of heat network adjustment lag, hydraulic imbalance of pipe network, and uneven heating and cooling of heat users

Active Publication Date: 2016-08-31
CHANGZHOU ENGIPOWER TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a heating network adjustment method and system to solve the problems of lagging adjustment of the heating network, hydraulic imbalance of the pipe network, and uneven heating and cooling of the heating users

Method used

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  • Urban heating system heating network regulating method and system based on mechanism model prediction control
  • Urban heating system heating network regulating method and system based on mechanism model prediction control
  • Urban heating system heating network regulating method and system based on mechanism model prediction control

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Embodiment 1

[0080] Such as figure 1 Shown, a kind of heat network regulation method of the present invention comprises the following steps:

[0081] Step S1, establishing a prediction model;

[0082] In step S2, with the goal of balanced heat supply, the adjustment scheme of each pump and each valve in the primary heating network is obtained through forecasting model prediction.

[0083] Specifically, the heat network regulating system can be used for primary heat network regulation in urban heating systems.

[0084] The step of establishing a predictive model in the step S1 includes:

[0085] Step S11, thermal-hydraulic analysis and solution; and

[0086] Step S12, prediction model correction.

[0087] The method for thermal-hydraulic analysis and solution in the step S11 includes:

[0088] Step S111, converting the pipe network into a directed graph model composed of nodes and sections, i.e. a pipe network graph; where the nodes represent the points where there is flow in and out, ...

Embodiment 2

[0131] On the basis of Embodiment 1, the present invention also provides a heat network regulating system, comprising: a forecast model building unit, and a heat network regulating unit connected to the predictive model building unit.

[0132] The predictive model establishment unit is suitable for establishing a predictive model, that is, a thermal-hydraulic analysis and solution module, and a predictive model correction module.

[0133] The thermal-hydraulic analysis solution module, namely

[0134] Transform the pipe network into a directed graph model composed of nodes and sections, that is, a pipe network graph; where the nodes represent the points where there is flow in and out, represented by the set V, V=[V 1 ,V 2 ,...,V n ], in the formula, n is the number of nodes in the pipe network; the section is the connecting pipe section between nodes, represented by the set E, E=[E 1 ,E 2 ,...,E m ], where m is the number of sections, and the directed graph is expressed a...

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Abstract

The invention relates to an urban heating system heating network regulating method and system based on mechanism model prediction control. The heating network regulating method comprises the following steps that S1, a prediction model is established; and S2, regulating schemes of all pumps and valves in the first-degree heating network are obtained through the prediction model with balanced heating as the target. According to the urban heating system heating network regulating method and system, the prediction model of the first-degree heating network serves as the core, the accurate regulating schemes of the tens of to hundreds of water pumps and the electromagnetic valves in the first-degree heating network system are obtained through prediction control, the heating network is regulated in real time, and the problems that heating network control is delayed, and heating of heat users is nonuniform in temperature are solved.

Description

technical field [0001] The invention relates to an intelligent regulation technology of an urban heating system, in particular to a first-level heat network regulation technology of a central heating system based on model predictive control. Background technique [0002] In the context of the transformation of energy production and consumption in my country, the heat source conditions of urban heating systems have become more and more complex, and there are different combinations of heat and power plants, hot water boilers, industrial waste heat, wind energy, and geothermal. In order to support multi-source complementary operation, the first-level heat network of the urban heating system is further developed into an interconnected and looped structure. Distributed variable frequency pump transmission and distribution technology is adopted. Networked operation and improved reliability increase the difficulty of scheduling operation. At present, the level of automation and i...

Claims

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Application Information

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IPC IPC(8): F24D19/10
CPCF24D19/1009
Inventor 于春娣周懿吴燕玲方大俊
Owner CHANGZHOU ENGIPOWER TECH
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