Control method and system for hydraulic disorders of cold/heat supply pipe network

A control method and heat pipe network technology, applied in heating and ventilation control systems, heating systems, air-conditioning systems, etc., can solve problems such as hydraulic imbalance in pipe networks, users not getting enough cold/heat, and excessive flow

Inactive Publication Date: 2020-04-17
珠海横琴能源发展有限公司 +1
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Problems solved by technology

[0003] At present, many scholars have carried out a series of studies on the hydraulic imbalance of the pipeline network. The operation adjustment method has been able to solve the operation adjustment problem of a single project, but in terms of universality, there are still big problems in the flow distribution scheme of each heat source subjectivity, should be able to meet all engineering needs when adjusting
[0004] In the dynamic operation of th

Method used

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  • Control method and system for hydraulic disorders of cold/heat supply pipe network
  • Control method and system for hydraulic disorders of cold/heat supply pipe network
  • Control method and system for hydraulic disorders of cold/heat supply pipe network

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Experimental program
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Embodiment

[0160] Step 1: Carry out pipe network modeling through the basic loop analysis method (MPK), abstract users and pipe branch connections into connection nodes, and abstract water supply pipe sections and return water pipe sections between two nodes into edges, then the pipe network The structure is abstracted into nodes and edges in the following form:

[0161]

[0162] Among them, n0 nodes are discarded in the calculation.

[0163] Step 2, given the initial value let k=0;

[0164] by formula G t =A t －1 Q-A t －1 A l G l Calculate G t 0 , G 0 ;

[0165] by formula G k+1 =G k +ΔG k+1 Calculate ΔG l k+1 , ΔG k+1 ;

[0166] Judgment|ΔG k+1 |≤ε(given precision), if satisfied, then G k =G * , the calculation ends;

[0167] Otherwise, G k+1 =G k +G l , let k=k+1, calculate ΔG l k+1 , ΔG k+1 , repeat the calculation process until convergence.

[0168] Step 3, calculate the user’s hydraulic out-of-schedule based on the historical data of each user’s op...

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Abstract

The invention relates to a control method and system for hydraulic disorders of a cold/heat supply pipe network. The method comprises the steps that a hydraulic simulation model of a cold/heat supplypipe network system is set up; the flow distribution scheme of users is confirmed; according to the flow distribution scheme of the users, the hydraulic conditions of the users are calculated throughthe running historical data of the users; according to the hydraulic conditions of the users, primary hydraulic adjustment is carried out on the pipe network through the model analysis method; according to the historical temperature records of the old/heat supply pipe network system, the artificial neural network is adopted for predicating outdoor temperature; according to the outdoor predicated temperature, models are set up for different running adjusting manners to be compared and calculated; according to the calculation result, the corresponding running adjusting manners are selected, andthe pipe network system obtained after primary hydraulic adjustment is adjusted secondarily; and hydraulic condition inspection is carried out on the pipe network system obtained after secondary adjustment. According to the method, on the premise of achieving hydraulic balance of the cold/heat supply pipe network, hydraulic balance adjustment can be completed within a short time after the cold/heat supply system is put into operation.

Description

technical field [0001] The invention relates to the field of hydraulic regulation of a cooling / heating pipe network, in particular to a method and system for controlling hydraulic imbalance of a cooling / heating pipe network. Background technique [0002] As the scale of regional centralized heating and cooling continues to expand, environmental management standards continue to improve, and residents have higher and higher requirements for comfort. How to regulate the central heating and cooling system and make correct regulations, improve the economic and social benefits of the network, and reduce operating costs are the fundamental problems faced by the energy supply industry. [0003] At present, many scholars have carried out a series of studies on the hydraulic imbalance of the pipeline network. The operation adjustment method has been able to solve the operation adjustment problem of a single project, but in terms of universality, there are still big problems in the flo...

Claims

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Application Information

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IPC IPC(8): F24D3/10F24D19/10F24F5/00F24F11/83F24F110/12
CPCF24D3/1058F24D19/1009F24F5/0003F24F11/83F24F2110/12
Inventor 胡为森刘磊洪文鹏李睿李海波曾贺湛吴爽杨迪欧志才黄飞强金旭
Owner 珠海横琴能源发展有限公司
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