A comprehensive evaluation system and method for hydraulic and thermal balance of long-distance pipeline networks

Abstract

The present invention discloses a hydraulic and thermal balance evaluation system and method. The system assigns weights according to the importance of each preset measuring point, calculates the hydraulic and thermal balance of each measuring point to obtain the hydraulic and thermal balance corresponding to each measuring point, calculates the hydraulic and thermal balance of the entire long-distance pipeline network to obtain the hydraulic and thermal balance of the entire network, and when the hydraulic and thermal balance corresponding to each measuring point exceeds a set first threshold, a local working fluid warning is issued. When the hydraulic and thermal balance of the entire network exceeds a set second threshold, a whole-network working fluid warning is issued. The system truly reflects the overall and local hydraulic and thermal balance in a long-distance pipeline network with a long distance and a large temperature difference. In order to avoid damage to the pipe wall of the long-distance pipeline network due to large temperature differences and high pressure during long-distance transportation, the long-distance pipeline is uniformly monitored to avoid the situation where monitoring is not in place due to the long distance, thereby improving the detection and warning level of the long-distance pipeline network and further ensuring the safe operation of the long-distance pipeline network.

Description

Technical Field

[0001] The present invention belongs to the field of industrial steam quality evaluation, and in particular relates to a system and method for evaluating the hydraulic and thermal balance of a long-distance pipeline network. Background Art

[0002] In conventional temperature gradient combined heat and power (CHP) systems, the industry generally considers the economic heating radius to be around 20 kilometers. However, the emergence of large temperature gradient heating models, exemplified by long-distance pipeline networks, has significantly reduced pipeline transportation costs and CHP heating costs, significantly increasing this economic heating radius. The traditional comparison for this economic heating radius was coal-fired boiler rooms. Due to environmental pressures and the vigorous development of clean heating, new coal-fired boiler rooms have been largely banned. Existing coal-fired boiler rooms are gradually being converted to clean energy sources, with natural gas being the primary clean energy source for heating, in addition to CHP. Therefore, the comparison for the economic heating radius has shifted from cheaper coal-fired boiler rooms to more expensive gas-fired boiler rooms. Combined with the increased transmission capacity and reduced heating costs brought about by large temperature gradient heating technology, simple calculations suggest that the economic heating radius for large temperature gradient heating based on long-distance pipeline networks can reach over 100 kilometers.

[0003] Long-distance pipeline heating, as a centralized heating method, reduces urban environmental pollution while also maximizing energy efficiency through comprehensive energy utilization. It can cover a large heating area surrounding a large thermal power plant. However, some large thermal power units, located far from urban areas, require centralized heating through long-distance pipeline heating.

[0004] Long-distance pipeline heating also faces the challenge of coordinating the heat and electricity loads of traditional cogeneration units. Because long-distance pipelines extend over 100 km, conventional heating networks cannot reach this distance. While conventional pipelines are easy to collect working fluid data and conduct quality inspections, their length makes this difficult. Furthermore, long-distance pipelines experience higher temperatures than conventional pipelines. While conventional supply and return water temperatures typically range from 44°C / 43°C, these rise to 125°C / 45°C. This significant temperature differential, coupled with higher working fluid pressure within long-distance pipelines, creates significant safety risks if localized pipe wall damage or leakage occurs during operation. To ensure safe operation of these long-distance pipeline systems, heating companies must constantly monitor working fluid conditions at every measurement point, consuming significant manpower and increasing operational and maintenance costs. Summary of the Invention

[0005] In order to solve the above problems, the present invention proposes a long-distance pipeline network hydraulic and thermal balance evaluation system and method, which truly reflects the overall and local hydraulic and thermal balance of the long-distance pipeline network, guides the long-distance pipeline network heating end enterprises to adjust the long-distance pipeline network operation status in real time, reduces manpower waste, and ensures the safe operation of the long-distance pipeline network.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] The present invention proposes a method for evaluating the hydraulic and thermal balance of a long-distance pipeline network, comprising:

[0008] Mark the measuring points in the long-distance pipeline network, assign weights to each measuring point, and obtain the working fluid data of each measuring point within a preset time period;

[0009] The hydraulic and thermal balance corresponding to each measuring point is calculated based on the working fluid data of each measuring point within a preset period;

[0010] When the hydraulic and thermal balance degree corresponding to each measuring point exceeds the set first threshold, the off-limit measuring point and the off-limit measuring point balance degree are obtained, and the off-limit measuring point balance degrees are sorted according to the corresponding weights of the off-limit measuring points, and a local working fluid early warning is issued;

[0011] The hydraulic and thermal balance of the entire network is calculated based on the hydraulic and thermal balance corresponding to each measuring point and the weight corresponding to each measuring point;

[0012] When the hydraulic and thermal balance of the entire network exceeds the set second threshold, a working medium warning for the entire network is issued.

[0013] Preferably, the hydraulic and thermodynamic balance corresponding to each measuring point is calculated based on the working fluid data of each measuring point within a preset period of time. The specific formula is as follows:

[0014]

[0015]

[0016]

[0017] F=a*FT+b*FQ+c*FP

[0018] Where F is the hydraulic and thermodynamic balance of the working fluid at a certain measuring point in the long-distance pipeline network, FT is the temperature balance of the working fluid at a certain measuring point in the long-distance pipeline network, FQ is the flow balance of the working fluid at a certain measuring point in the long-distance pipeline network, FP is the pressure balance of the working fluid at a certain measuring point in the long-distance pipeline network, T0 and T are the contract value and real-time measurement value of the working fluid temperature at the measuring point in the long-distance pipeline network, respectively; Q0 ​​and Q are the contract value and real-time measurement value of the working fluid flow at the measuring point in the long-distance pipeline network, respectively; P0 and P are the contract value and real-time measurement value of the working fluid flow at the measuring point in the long-distance pipeline network, respectively; a, b, and c are the weight coefficients of the temperature, flow, and pressure of the working fluid at the measuring point on the hydraulic and thermodynamic balance of the working fluid.

[0019] Preferably, the hydraulic and thermal balance of the entire network is calculated based on the hydraulic and thermal balance corresponding to each measuring point and the weight corresponding to each measuring point. The specific formula is as follows:

[0020]

[0021] Where, F total is the hydraulic and thermal balance of the entire long-distance pipeline network, w i and F i Calculate the weight of the hydraulic and thermodynamic balance of measuring point i and the hydraulic and thermodynamic balance of the working medium.

[0022] The present invention also proposes a long-distance pipeline network hydraulic and thermal balance evaluation system, including:

[0023] The measurement point preprocessing module marks the measurement points in the long-distance pipeline network, assigns a weight to each measurement point, and obtains the working fluid data of each measurement point within a preset time period;

[0024] The measuring point calculation module calculates the hydraulic and thermal balance corresponding to each measuring point based on the working fluid data of each measuring point within a preset period;

[0025] The local working fluid early warning module obtains the out-of-limit measuring point and the balance degree of the out-of-limit measuring point when the hydraulic and thermal balance degree corresponding to each measuring point exceeds the set first threshold. The balance degrees of the out-of-limit measuring points are sorted according to the weights corresponding to the out-of-limit measuring points, and a local working fluid early warning is issued.

[0026] The whole network calculation module calculates the hydraulic and thermal balance of the whole network according to the hydraulic and thermal balance corresponding to each measuring point and the weight corresponding to each measuring point;

[0027] The network-wide working quality early warning module issues a network-wide working quality early warning when the hydraulic and thermal balance of the network exceeds a set second threshold.

[0028] Preferably, the measuring point preprocessing module includes a temperature measurement sensor, a flow measurement sensor, and a pressure measurement sensor. The temperature measurement sensor is used to collect working fluid temperature data, the flow measurement sensor is used to collect working fluid flow data, and the pressure measurement sensor is used to collect working fluid pressure data.

[0029] Preferably, the measuring point preprocessing module further includes a data transmission device and a cache device, wherein the cache device is used to temporarily store the working fluid data collected by the temperature measurement sensor, the flow measurement sensor and the pressure measurement sensor transmitted by the data transmission device.

[0030] Preferably, the measuring point preprocessing module includes a measuring point weight allocation module, which is used to allocate weights according to the importance of each measuring point and supports manual modification of weights.

[0031] Preferably, the measurement point calculation module includes a working fluid information storage unit and a calculation information storage unit;

[0032] The working fluid information storage unit is used to store working fluid data and the hydraulic and thermodynamic balance corresponding to each measuring point, and the calculation information storage unit is used to store preset working fluid data contract values.

[0033] The present invention also proposes an electronic device, comprising a processor and a memory, wherein the memory stores at least one instruction, and the instruction stored in the memory is executed to implement the method for evaluating the hydraulic and thermal balance of a long-distance pipeline network.

[0034] The present invention also proposes a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the method for evaluating the hydraulic and thermal balance of a long-distance pipeline network is implemented.

[0035] Compared with the prior art, the present invention has the following beneficial effects:

[0036] The present invention discloses a method for evaluating the hydraulic and thermal balance of a long-distance pipeline network. The method assigns weights according to the importance of each preset measuring point, obtains working fluid data at the measuring point, calculates the hydraulic and thermal balance of each measuring point to obtain the hydraulic and thermal balance corresponding to each measuring point, and calculates the hydraulic and thermal balance of the entire long-distance pipeline network to obtain the hydraulic and thermal balance of the entire network. When the hydraulic and thermal balance corresponding to each measuring point exceeds a preset first threshold, a local working fluid warning is issued. When the hydraulic and thermal balance of the entire network exceeds a preset second threshold, a network-wide working fluid warning is issued. The method truly reflects the overall and local hydraulic and thermal balance in a long-distance pipeline network with long distances and large temperature differences. To prevent damage to the pipe wall of the long-distance pipeline network due to large temperature differences and high pressure during long-distance transportation, a method for early warning based on local working fluid data is introduced to ensure accurate early warning when anomalies occur. A method for early warning based on network-wide working fluid data is introduced to uniformly monitor long-distance pipelines, avoiding situations where monitoring is inadequate due to long distances, improving the detection and early warning capabilities of the long-distance pipeline network, and further ensuring the safe operation of the long-distance pipeline network.

[0037] The present invention discloses a long-distance pipeline network hydraulic and thermal balance evaluation system. A measurement point preprocessing module monitors working fluid data at each measurement point in the long-distance pipeline network in real time. A measurement point calculation module calculates the hydraulic and thermal balance of each measurement point in the long-distance pipeline network to obtain the hydraulic and thermal balance corresponding to each measurement point. A local working fluid early warning module issues early warnings for measurement points that exceed the limit. A whole-network calculation module calculates the hydraulic and thermal balance of the entire long-distance pipeline network to obtain the hydraulic and thermal balance of the entire network. The whole-network working fluid early warning module issues early warnings. The entire system combines long-distance pipeline network measurement point hydraulic and thermal balance evaluation indicators with long-distance pipeline network whole-network hydraulic and thermal balance evaluation technology to objectively and effectively quantify the working fluid quality of the long-distance pipeline network. Based on this, it issues real-time early warnings for areas with high hydraulic and thermal balance within local and network-wide areas, guiding heat network operators to optimize supply and demand configurations and achieve safe and economical operation of the long-distance pipeline network.

[0038] Furthermore, the cache device is used to temporarily store data collected by temperature, flow, and pressure measurement sensors transmitted via the data transmission device. This alleviates the time wasted when processing data at different speeds, speeds up access, supports efficient data reading in congested computing environments, and provides hardware support for parallel computing.

[0039] Furthermore, the working fluid information storage unit is used to store working fluid data and the hydraulic and thermodynamic balance corresponding to each measuring point, thereby improving data processing and query efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 The present invention discloses a flow chart of a method for evaluating the hydraulic and thermal balance of a long-distance pipeline network.

[0041] Figure 2 This is an architectural diagram of a long-distance pipeline network hydraulic and thermal balance evaluation system disclosed in the present invention. DETAILED DESCRIPTION

[0042] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it should not be understood as a limitation on the scope of protection of the present invention.

[0043] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0044] In the description of the present invention, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0045] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0046] The present invention will be further described in detail below with reference to specific embodiments, which are intended to explain the present invention rather than to limit it.

[0047] This paper proposes a method for evaluating the hydraulic and thermal balance of long-distance pipeline networks. Figure 1 ,include,

[0048] Mark the measuring points in the long-distance pipeline network, assign weights to each measuring point, and obtain the working fluid data of each measuring point within a preset time period;

[0049] The hydraulic and thermal balance corresponding to each measuring point is calculated based on the working fluid data of each measuring point within a preset period;

[0050] When the hydraulic and thermal balance degree corresponding to each measuring point exceeds the set first threshold, the off-limit measuring point and the off-limit measuring point balance degree are obtained, and the off-limit measuring point balance degrees are sorted according to the corresponding weights of the off-limit measuring points, and a local working fluid early warning is issued;

[0051] The hydraulic and thermal balance of the entire network is calculated based on the hydraulic and thermal balance corresponding to each measuring point and the weight corresponding to each measuring point;

[0052] When the hydraulic and thermal balance of the entire network exceeds the set second threshold, a working medium warning for the entire network is issued.

[0053] In order to truly reflect the overall and local hydraulic and thermal balance in long-distance and large temperature difference long-distance pipeline networks, and to avoid damage to the pipe walls of long-distance pipeline networks due to large temperature differences and high pressure during long-distance transportation, a method of early warning of local working fluid data is introduced to ensure accurate early warning when abnormalities occur. A method of early warning of the working fluid data of the entire network is introduced to uniformly monitor long-distance pipelines to avoid situations where monitoring is not in place due to long distances, improve the detection and early warning level of long-distance pipeline networks, and further ensure the safe operation of long-distance pipeline networks.

[0054] In the specific embodiment of the present invention, please refer to Figure 1 , the hydraulic and thermal balance corresponding to each measuring point is calculated based on the working fluid data of each measuring point within the preset period. The specific formula is as follows:

[0055]

[0056]

[0057]

[0058] F=a*FT+b*FQ+c*FP

[0059] Where F is the hydraulic and thermodynamic balance of the working fluid at a certain measuring point in the long-distance pipeline network, FT is the temperature balance of the working fluid at a certain measuring point in the long-distance pipeline network, FQ is the flow balance of the working fluid at a certain measuring point in the long-distance pipeline network, FP is the pressure balance of the working fluid at a certain measuring point in the long-distance pipeline network, T0 and T are the contract value and real-time measurement value of the working fluid temperature at the measuring point in the long-distance pipeline network, respectively; Q0 ​​and Q are the contract value and real-time measurement value of the working fluid flow at the measuring point in the long-distance pipeline network, respectively; P0 and P are the contract value and real-time measurement value of the working fluid flow at the measuring point in the long-distance pipeline network, respectively; a, b, and c are the weight coefficients of the temperature, flow, and pressure of the working fluid at the measuring point on the hydraulic and thermodynamic balance of the working fluid.

[0060] In the specific embodiment of the present invention, please refer to Figure 1 The hydraulic and thermal balance of the entire network is calculated based on the hydraulic and thermal balance corresponding to each measuring point and the weight corresponding to each measuring point. The specific formula is as follows:

[0061]

[0062] Where, F totalis the hydraulic and thermal balance of the entire long-distance pipeline network, w i and F i Calculate the weight of the hydraulic and thermodynamic balance of measuring point i and the hydraulic and thermodynamic balance of the working medium.

[0063] The present invention provides a long-distance pipeline network hydraulic and thermal balance evaluation system, please refer to Figure 2 ,include,

[0064] The measurement point preprocessing module marks the measurement points in the long-distance pipeline network, assigns a weight to each measurement point, and obtains the working fluid data of each measurement point within a preset time period;

[0065] The measuring point calculation module calculates the hydraulic and thermal balance corresponding to each measuring point based on the working fluid data of each measuring point within a preset period;

[0066] The local working fluid early warning module obtains the out-of-limit measuring point and the balance degree of the out-of-limit measuring point when the hydraulic and thermal balance degree corresponding to each measuring point exceeds the set first threshold. The balance degrees of the out-of-limit measuring points are sorted according to the weights corresponding to the out-of-limit measuring points, and a local working fluid early warning is issued.

[0067] The whole network calculation module calculates the hydraulic and thermal balance of the whole network according to the hydraulic and thermal balance corresponding to each measuring point and the weight corresponding to each measuring point;

[0068] The network-wide working quality early warning module issues a network-wide working quality early warning when the hydraulic and thermal balance of the network exceeds a set second threshold.

[0069] The local working fluid early warning module provides timely notification when an anomaly occurs in a local pipeline network, preventing further danger and loss, improving the quality of long-distance pipeline networks, and enhancing the accuracy and applicability of early warnings. The module monitors key measurement points defined by the heating company, obtaining real-time hydraulic and thermal balance values ​​for each working fluid in the measurement point calculation module. When the hydraulic and thermal balance values ​​for each measurement point exceed a predefined first threshold, an alarm is issued to the host computer, prompting operators to promptly adjust the heating configuration near the measurement point.

[0070] The network-wide working quality early warning module monitors and provides early warnings for the safe operation of the entire long-distance pipeline network. Before issuing limit warnings, it comprehensively considers the differences among various measuring points in the long-distance pipeline network and assigns weights based on their importance, thereby improving early warning efficiency. The network-wide working quality early warning module monitors the evaluation results of the network-wide calculation module to obtain the hydraulic and thermal balance of the entire network. When the hydraulic and thermal balance of the entire network exceeds a set second threshold, an alarm is issued to the computer host, reminding operators to optimize the steam supply combination logic of the entire network to ensure the working quality of the working quality in most sections of the long-distance pipeline network.

[0071] By real-time monitoring of the working fluid parameters at each measuring point in the long-distance pipeline network, combined with the hydraulic and thermal balance evaluation indicators of the measuring points of the long-distance pipeline network and the hydraulic and thermal balance evaluation technology of the entire long-distance pipeline network, the working fluid quality of the long-distance pipeline network is objectively and effectively quantified. On this basis, real-time early warning is issued to areas with high hydraulic and thermal balance in local areas and the entire network, guiding heat network operators to optimize supply and demand configuration and achieve safe and economical operation of the long-distance pipeline network.

[0072] In the specific embodiment of the present invention, please refer to Figure 2 The measuring point preprocessing module includes a temperature measurement sensor, a flow measurement sensor, and a pressure measurement sensor. The temperature measurement sensor is used to collect working fluid temperature data, the flow measurement sensor is used to collect working fluid flow data, and the pressure measurement sensor is used to collect working fluid pressure data.

[0073] The temperature measurement sensor monitors the steam temperature at each measuring point in real time to obtain a continuous working fluid analog quantity; the flow measurement sensor monitors the working fluid flow at each measuring point in the long-distance pipeline network in real time to obtain a continuous working fluid flow analog quantity; the pressure measurement sensor monitors the working fluid pressure at each measuring point in the long-distance pipeline network in real time to obtain a continuous working fluid pressure analog quantity.

[0074] In the specific embodiment of the present invention, please refer to Figure 2 The measuring point preprocessing module also includes a data transmission device and a cache device, and the cache device is used to temporarily store the working fluid data collected by the temperature measurement sensor, flow measurement sensor and pressure measurement sensor transmitted by the data transmission device.

[0075] The data transmission device converts the analog signal obtained by the temperature measuring device into a digital signal, and transmits the digital signal to the cache device of the control center through the industrial network.

[0076] The cache device is used to temporarily store real-time collected data of the working fluid in the long-distance pipeline network, alleviating the time waste caused by the mismatch in data processing speed at both ends. This speeds up the access speed, supports efficient data reading operations in the case of computing environment congestion, and provides hardware support for parallel computing mode.

[0077] In the specific embodiment of the present invention, please refer to Figure 2 , wherein the measuring point preprocessing module includes a measuring point weight allocation module, which is used to allocate weights according to the importance of each measuring point and supports manual modification of weights.

[0078] The measurement point weighting module uses the Delphi method to determine the importance of each measurement point in the long-distance heat transmission network, assigns calculation weights to each point, and supports manual modification of these weights by heating companies at the end of the long-distance heat transmission network. This module reflects the balance of various factors in the comprehensive evaluation and can accurately adjust the weights of each measurement point in the long-distance heat transmission network, thereby more accurately predicting changes in the heat supply configuration of each measurement point.

[0079] In the specific embodiment of the present invention, please refer to Figure 2 , the measuring point calculation module includes a working fluid information storage unit and a calculation information storage unit;

[0080] The working fluid information storage unit is used to store working fluid data and the hydraulic and thermodynamic balance corresponding to each measuring point, and the calculation information storage unit is used to store preset working fluid data contract values.

[0081] In order to improve data processing and query efficiency, the working fluid information storage unit is used to store historical operating data and historical hydraulic and thermal balance evaluation values ​​at various measuring points in the long-distance pipeline network. The calculation information storage unit stores preset working fluid data contract values, supporting enterprises to conveniently access, manage, modify, update, control and organize data, save a large amount of organized working fluid data information, and enable enterprises to quickly and securely access and query relevant data.

[0082] The present invention proposes an electronic device comprising a processor and a memory, wherein the memory stores at least one instruction, and the instruction stored in the memory is executed to implement the method for evaluating the hydraulic and thermal balance of a long-distance pipeline network.

[0083] The present invention proposes a computer-readable storage medium, wherein a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the method for evaluating the hydraulic and thermal balance of a long-distance pipeline network is realized.

[0084] The above content is a further detailed description of the present invention in combination with specific preferred embodiments. It cannot be considered that the specific embodiments of the present invention are limited to these. For ordinary technicians in the technical field to which the present invention belongs, they can make several simple deductions or substitutions without departing from the concept of the present invention, which should be regarded as belonging to the scope of patent protection determined by the submitted claims of the present invention.

Claims

1. A method for evaluating the hydraulic and thermal balance of a long-distance pipeline network, characterized in that: include, Mark the measuring points in the long-distance pipeline network, assign weights to each measuring point, and obtain the working fluid data of each measuring point within a preset time period; The hydraulic and thermal balance corresponding to each measuring point is calculated based on the working fluid data of each measuring point within a preset period; The specific formula is as follows: Where, is the hydraulic and thermal balance of the working fluid at a certain measuring point in the long-distance pipeline network, is the temperature balance of the working fluid at a certain measuring point in the long-distance pipeline network, is the working fluid flow balance at a certain measuring point in the long-distance pipeline network, is the working fluid pressure balance at a certain measuring point in the long-distance pipeline network, and are the contract value and real-time measurement value of the working fluid temperature at the measuring point of the long-distance pipeline network, and are the contract value and real-time measurement value of the working fluid flow at the measuring point of the long-distance pipeline network, and are the contract value and real-time measurement value of the working fluid flow rate at the measuring point of the long-distance pipeline network, respectively; a, b and c are the weight coefficients of the working fluid temperature, flow rate and pressure at the measuring point on the hydraulic and thermodynamic balance of the working fluid; When the hydraulic and thermal balance degree corresponding to each measuring point exceeds the set first threshold, the off-limit measuring point and the off-limit measuring point balance degree are obtained, and the off-limit measuring point balance degrees are sorted according to the corresponding weights of the off-limit measuring points, and a local working fluid early warning is issued; The hydraulic and thermal balance of the entire network is calculated based on the hydraulic and thermal balance corresponding to each measuring point and the weight corresponding to each measuring point; When the hydraulic and thermal balance of the entire network exceeds the set second threshold, a working medium warning for the entire network is issued.

2. The method for evaluating the hydraulic and thermal balance of a long-distance pipeline network according to claim 1, characterized in that: The hydraulic and thermal balance of the entire network is calculated based on the hydraulic and thermal balance corresponding to each measuring point and the weight corresponding to each measuring point. The specific formula is as follows: Where, The hydraulic and thermal balance of the entire long-distance pipeline network. and Calculate the weight of the hydraulic and thermodynamic balance of measuring point i and the hydraulic and thermodynamic balance of the working medium.

3. A long-distance pipeline network hydraulic and thermal balance evaluation system, characterized in that: include, The measurement point preprocessing module marks the measurement points in the long-distance pipeline network, assigns a weight to each measurement point, and obtains the working fluid data of each measurement point within a preset time period; The measuring point calculation module calculates the hydraulic and thermal balance corresponding to each measuring point based on the working fluid data of each measuring point within a preset period; The specific formula is as follows: Where, is the hydraulic and thermal balance of the working fluid at a certain measuring point in the long-distance pipeline network, is the temperature balance of the working fluid at a certain measuring point in the long-distance pipeline network, is the working fluid flow balance at a certain measuring point in the long-distance pipeline network, is the working fluid pressure balance at a certain measuring point in the long-distance pipeline network, and are the contract value and real-time measurement value of the working fluid temperature at the measuring point of the long-distance pipeline network, and are the contract value and real-time measurement value of the working fluid flow at the measuring point of the long-distance pipeline network, and are the contract value and real-time measurement value of the working fluid flow rate at the measuring point of the long-distance pipeline network, respectively; a, b and c are the weight coefficients of the working fluid temperature, flow rate and pressure at the measuring point on the hydraulic and thermodynamic balance of the working fluid; The local working fluid early warning module obtains the out-of-limit measuring point and the balance degree of the out-of-limit measuring point when the hydraulic and thermal balance degree corresponding to each measuring point exceeds the set first threshold. The balance degrees of the out-of-limit measuring points are sorted according to the weights corresponding to the out-of-limit measuring points, and a local working fluid early warning is issued. The whole network calculation module calculates the hydraulic and thermal balance of the whole network according to the hydraulic and thermal balance corresponding to each measuring point and the weight corresponding to each measuring point; The network-wide working quality early warning module issues a network-wide working quality early warning when the hydraulic and thermal balance of the network exceeds a set second threshold.

4. A long-distance pipeline network hydraulic and thermal balance evaluation system according to claim 3, characterized in that: The measuring point preprocessing module includes a temperature measurement sensor, a flow measurement sensor, and a pressure measurement sensor. The temperature measurement sensor is used to collect working fluid temperature data, the flow measurement sensor is used to collect working fluid flow data, and the pressure measurement sensor is used to collect working fluid pressure data.

5. The long-distance pipeline network hydraulic and thermal balance evaluation system according to claim 3 is characterized in that: The measuring point preprocessing module further includes a data transmission device and a high-speed cache device, wherein the high-speed cache device is used to temporarily store the working fluid data collected by the temperature measurement sensor, the flow measurement sensor and the pressure measurement sensor transmitted by the data transmission device.

6. A long-distance pipeline network hydraulic and thermal balance evaluation system according to claim 3, characterized in that: The measuring point preprocessing module includes a measuring point weight allocation module, which is used to allocate weights according to the importance of each measuring point and supports manual modification of weights.

7. The long-distance pipeline network hydraulic and thermal balance evaluation system according to claim 3 is characterized in that: The measuring point calculation module includes a working fluid information storage unit and a calculation information storage unit; The working fluid information storage unit is used to store working fluid data and the hydraulic and thermodynamic balance corresponding to each measuring point, and the calculation information storage unit is used to store preset working fluid data contract values.

8. An electronic device, characterized in that: The method comprises a processor and a memory, wherein the memory stores at least one instruction, and the instruction stored in the memory is executed to implement the method for evaluating the hydraulic and thermal balance of a long-distance pipeline network as claimed in claim 1.

9. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program, and when the computer program is executed by the processor, the method for evaluating the hydraulic and thermodynamic balance of a long-distance pipeline network as claimed in claim 1 is implemented.

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