Flexible analysis and structure defect diagnosis and positioning method and system for urban heat supply network

A technology of structural defects and positioning methods, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as waste of waste, inability to accommodate fluctuations, uncertain low-carbon and renewable heat, etc., to achieve Real Feasible Effects

Active Publication Date: 2019-09-27
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The ability of the heating network to flexibly transport heat energy is directly related to the realization of the goal of clean heating. If the flexibility of the heating network transportation is sufficient, the use of high-carbon and high-cost peak hot water boilers can be reduced at the beginning of the heating season, and more low-cost hot water boilers can be used. Carbon, renewable energy, on the contrary, if the flexibility of heat network transportation is insufficient, it will lead to the inability to accommodate fluctuations, uncertain low-carbon and renewable heat energy, resulting in waste of waste

Method used

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  • Flexible analysis and structure defect diagnosis and positioning method and system for urban heat supply network
  • Flexible analysis and structure defect diagnosis and positioning method and system for urban heat supply network
  • Flexible analysis and structure defect diagnosis and positioning method and system for urban heat supply network

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Experimental program
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Embodiment 1

[0058] Step S1: Based on structural mechanism modeling and combined with operating data identification, a mapping model for thermal-hydraulic simulation calculation of the heating network is established;

[0059] First select the heating pipe network in a certain area (such as figure 1 As shown), the components such as heat source, heat user, pipe section, valve, tee and steam trap are simplified into physical models to establish a topology. Specifically, it consists of a set V(G) of N nodes: supply, demand, and sink, and a set E(G) of M pipes (including: water supply and return pipes) connecting each node:

[0060] V(G)={V 1 ,...,V n ,...,V N}

[0061] E(G)={E 1 ,...,E m ,...,E M}

[0062] G={V(G),E(G)}

[0063] Among them, V n is the nth node in the heat network, E m is the mth pipe section in the heating network;

[0064] Using the principles of graph theory and related conservation equations, list the equations in matrix form. Extract urban heating network GIS...

Embodiment 2

[0106] On the basis of embodiment 1, this embodiment 2 provides a heating network flexibility analysis and structural defect diagnosis and positioning system, including:

[0107] Thermal-hydraulic simulation calculation module, which includes a thermal-hydraulic simulation mapping model, which is based on structural mechanism modeling, combined with operating data identification and establishment;

[0108] The heating network working condition test set generation module is used to generate test case sets under various working conditions in batches; the test case set is used to input the mapping model for thermal hydraulic simulation calculation;

[0109] The evaluation module of the heating network flexibility, which includes the flexibility evaluation model of the heating network, and combines the calculation results of the thermal hydraulic simulation calculation module to evaluate the flexibility of the heating network;

[0110] Structural defect diagnosis and location modu...

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Abstract

The invention discloses a flexible analysis and structure defect diagnosis and positioning method and system for an urban heat supply network. The method comprises the following steps: firstly, establishing a mapping model of an urban heat supply network, and generating a test case set of the heat supply network under each working condition for simulating different dynamic combinations of supply and demand ends; the invention further provides a heat supply network flexibility evaluation model and a structure defect diagnosis and positioning method which are used for quantitatively evaluating the heat supply network structure flexible heat transfer capacity and the dynamic regulation and control capacity in the heat supply network operation process. Regions or pipelines with poor flexibility of the heat supply network are obtained through diagnosis, so that operators can operate the heat supply network conveniently, and an optimal transformation scheme is provided for the regions with poor flexibility. According to the method and the system, more real assessment and practice feasibility can be provided for planning, design, optimization and reconstruction of the heat supply network.

Description

technical field [0001] The invention relates to a flexible analysis, structural defect diagnosis and positioning method and system of an urban heating network, which belongs to the field of optimal dispatching of the heating network. Background technique [0002] With the energy transition and the development of new urban energy networks, more and more efforts are being made to maximize the overall benefits of urban energy supply. As an important part of the urban energy network, the heating network is directly related to people's normal life and production activities in the face of large disturbances, rapid response and large fluctuations in supply load. [0003] In the current operation of the urban heating system, it is not only necessary to adjust the heat energy production plan of each heat source according to the weather change, but also to adjust the working point status combination of each pump and valve in the heat network to ensure safe, balanced and efficient heat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50G06Q50/06
CPCG06Q50/06G06F30/18G06F30/20
Inventor 钟崴陈嘉映林小杰周懿
Owner ZHEJIANG UNIV
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