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Heating network hydraulic balance adjusting method and system based on heating station resistance characteristics

A technology of hydraulic balance and resistance characteristics, applied in the field of heating network hydraulic balance control method and system, can solve the problems that are not conducive to precise control of heating network, can not achieve better control effect, frequent fluctuations, etc.

Active Publication Date: 2019-11-29
CHANGZHOU ENGIPOWER TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the geographical location of the heat station is relatively scattered, the transmission of the temperature from the heat source side to the heat station has a strong delay effect. Therefore, the feedback adjustment based on the temperature as the control parameter has a large hysteresis, which is not conducive to the precise regulation of the heat network; and The control strategy of tracking the flow of thermal stations is prone to frequent fluctuations due to the coupling effect between the thermal stations, and cannot achieve good control effects

Method used

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  • Heating network hydraulic balance adjusting method and system based on heating station resistance characteristics
  • Heating network hydraulic balance adjusting method and system based on heating station resistance characteristics
  • Heating network hydraulic balance adjusting method and system based on heating station resistance characteristics

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Embodiment 1

[0079] figure 1 It is a flow chart of the method for adjusting and controlling the hydraulic balance of the heating network based on the resistance characteristics of the thermal station involved in the present invention.

[0080] like figure 1 As shown, the present embodiment 1 provides a method for controlling the hydraulic balance of the heating network based on the resistance characteristics of the heating stations, which is characterized in that it includes: setting up a global coordination system; locally analyzing the actual values ​​of the resistance characteristic coefficients of each heating station; The system calculates the target value of the resistance characteristic coefficient of each thermal station, and generates a control strategy; and conducts online regulation of the hydraulic balance of the heating network according to the control strategy and the actual value; conducts online calculation and analysis of the heating network based on the global coordinatio...

Embodiment 2

[0130] Figure 7 It is a control flow chart of hydraulic balance degree of thermal station i involved in the present invention.

[0131] like Figure 7 As shown, on the basis of Embodiment 1, this Embodiment 2 takes the i-th thermal station at time t as an example for illustration; the global coordination system set on the cloud server reads the latest heat network structure model of the heating enterprise, and then The weather condition parameter U at time t t , T ft , based on the function f, calculate the demand flow q at time t in real time t , and calculate the hydraulic balance μ of the heating network under a single working condition;

[0132] When μt , supply and return water pressure P st ,P rt , demand load Q t and demand flow q t , based on the simulation calculation model function Г of the heating system pipe network, calculate the calculation parameters [q ti ,Δp ti], so as to calculate the target value ζ of the resistance characteristic coefficient of...

Embodiment 3

[0137] Figure 8 It is a principle block diagram of the hydraulic balance control system of the heating network based on the resistance characteristics of the thermal station involved in the present invention.

[0138] like Figure 8 As shown, on the basis of Embodiment 1 and Embodiment 2, this Embodiment 3 also provides a heating network hydraulic balance control system based on the resistance characteristics of the thermal station, including: a cloud server and a controller; the controller is set at In the thermal station, and the cloud server is connected to the controller; the cloud server is suitable for setting a global coordination subsystem, and calculates the target value of the resistance characteristic coefficient of each thermal station through the global coordination system, and generates a control strategy; The above-mentioned controller is suitable for analyzing the actual value of the resistance characteristic coefficient of the corresponding thermal station, ...

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Abstract

The invention belongs to the field of heat supply automation control, and in particular, relates to a heating network hydraulic balance adjusting method and system based on heating station resistancecharacteristics. The heating network hydraulic balance adjusting method based on the heating station resistance characteristics comprises the steps that a global coordination system is set; actual values of all heating station resistance characteristic coefficients are locally analyzed; target values of all the heating station resistance characteristic coefficients are calculated through the global coordination system, and control policies are generated; and the heating network hydraulic balance is adjusted online according to the control policies and the actual values to realize the hydraulicbalance adjustment based on the resistance characteristic coefficients; and due to the characteristic of no coupling influence of the resistance characteristic coefficients from other heating stationadjustment, the hysteresis and oscillation problems in the hydraulic balance adjustment can be effectively prevented, and the quick adjustment of the heating network hydraulic balance is realized.

Description

technical field [0001] The invention belongs to the field of heating automation control, and in particular relates to a method and system for adjusting and controlling the hydraulic balance of a heating network based on the resistance characteristics of a heating station. Background technique [0002] The central heating system is mainly composed of heat sources, heat stations and heat users. The heat produced by the heat source (usually stored in hot water) is delivered to the heat station through the primary network of the heating system, and then delivered to the heat users through the secondary network. . The typical control method of the central heating system is: the dispatching system of the centralized control center sends the control strategy of the lower thermal station, which can be the control strategy of tracking the secondary side water supply temperature, return water temperature, and average temperature of the thermal station, etc., with temperature as feedba...

Claims

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Application Information

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IPC IPC(8): F24D19/10G06F17/50G06Q10/04G06Q10/06H04L29/08
CPCF24D19/1006G06Q10/04G06Q10/063H04L67/10H04L67/12Y02A30/00
Inventor 方大俊周栋谢金芳朱浩强韩三飞张凯
Owner CHANGZHOU ENGIPOWER TECH
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