A centralized heating secondary network regulation and energy saving method based on household heat feedback

Abstract

The present application relates to the centralized heating secondary network regulation and energy saving technical field, especially to a kind of centralized heating secondary network regulation and energy saving method based on household heat feedback.The method includes: through heat meter, indoor wireless temperature control panel, room temperature collector and pressure transmitter, user side and most adverse loop data are collected, after data cleaning and alignment, standard heat supply and heat consumption deviation value sequence are generated;Then according to user classification result, current valve opening of user inlet flow regulating device is reduced for overheated user, and user inlet flow regulating device inlet differential pressure is kept processing, and combined with the most adverse loop differential pressure, heat exchange station frequency converter and heat exchange station circulating pump are adjusted in operating frequency, then current valve opening is adjusted for room temperature substandard user, and closed loop verification processing is carried out.The present application makes user side adjustment and system side adjustment form continuous link, reduces hot water flow transfer, improves regulation switching and operation record updating process.

Description

Technical Field

[0001] This invention relates to the field of energy-saving technology for the control of secondary heating networks in centralized heating systems, and in particular to an energy-saving method for the control of secondary heating networks in centralized heating systems based on individual household heat feedback. Background Technology

[0002] In the field of energy-saving technology for secondary network control in centralized heating, existing solutions for energy-saving methods based on individual household heat feedback typically revolve around a control link consisting of heat meters, indoor wireless temperature control panels, room temperature data collectors, user inlet flow regulators, pressure transmitters, heat exchange station circulating pumps, and heat exchange station frequency converters. These solutions suffer from limitations such as unclear correlation between heat consumption and actual indoor temperature data, mutual interference in hydraulic regulation processes, and insufficient connection between the most unfavorable loop pressure difference and operating frequency regulation. Existing methods largely rely on actual indoor temperature data, return water temperature, zone pressure difference, or changes in heat load to adjust valve opening and heat exchange station circulating pump operating frequency, resulting in a separation between heat consumption deviations and control actions.

[0003] In centralized heating secondary networks, there are numerous users, dispersed household pipe inlets, and both unfavorable and unfavorable loops coexist. The operating status of circulating pumps in heat exchange stations is constantly changing. In this scenario, it's easy for overheated users to coexist with users whose room temperature doesn't meet standards, and for hot water flow to shift to other users after the current valve opening is reduced. This makes it difficult to meet the stable energy-saving requirements of continuous regulation based on heat consumption deviation, the pressure difference of the most unfavorable loop, the reduction of the current valve opening, and the adjustment of operating frequency.

[0004] For the joint processing of flow rate, supply water temperature, return water temperature, supply and return water temperature difference, and heat consumption collected by heat meters, as well as the supply water pressure and return water pressure collected by pressure transmitters on the top floor, existing technologies generally suffer from problems such as fragmented data cleaning and alignment links, loose relationship between historical heating data and outdoor ambient temperature, disconnect between the determination of heat consumption deviation values ​​and control by user inlet flow regulation devices, and lack of sequential connection between user inlet flow regulation devices and frequency converters in heat exchange stations. It is difficult to form a consistent process of collection, alignment, determination, control, and recording in the centralized heating secondary network, resulting in repeated switching of the control process, difficulty in continuously updating operation records, and long-term reliance on repeated verification and adjustment for heating scheduling and operation management in production. Summary of the Invention

[0005] To address the aforementioned technical problems, this invention provides a centralized heating secondary network regulation and energy-saving method based on individual household heat feedback, comprising:

[0006] S100. Acquire multi-source data, perform data cleaning and alignment processing, standard heating analysis and calculation processing, and heat consumption deviation value calculation processing to obtain the first heat consumption deviation value sequence.

[0007] The multi-source data includes flow rate, supply water temperature, return water temperature, supply and return water temperature difference and heat consumption collected by the heat meter, as well as real indoor temperature data and indoor temperature demand data collected by the indoor wireless temperature control panel and room temperature collector.

[0008] S200. Based on the first heat consumption deviation value sequence, perform overheated user screening and preset valve opening matching processing, and execute a combination of reducing the current valve opening of the user inlet flow regulating device and maintaining the inlet differential pressure of the user inlet flow regulating device at the user inlet to generate the first inlet differential pressure maintenance data.

[0009] S300: Based on the first inlet differential pressure holding data, perform the most unfavorable loop differential pressure acquisition processing, differential pressure safety threshold comparison and heat exchange station circulating pump operation frequency analysis and calculation processing, and then perform heat exchange station inverter operation frequency adjustment and circulating pump operation speed control processing to generate the first operation frequency control data.

[0010] S400: Based on the first operating frequency control data, perform user screening for non-compliant room temperature, increase the current valve opening of the user inlet flow regulating device, and perform closed-loop verification processing to generate the first closed-loop verification data.

[0011] Furthermore, the data cleaning and alignment process includes:

[0012] The data uploaded by the heat meter, indoor wireless temperature control panel and room temperature collector are filtered for duplicate uploads, intermittent data are supplemented and data jumps are screened. Then, the flow rate, supply water temperature, return water temperature, supply and return water temperature difference, heat consumption, indoor temperature real data and indoor temperature demand data are put into the same user record for the same user and the same current time period to generate the first user data collection.

[0013] Furthermore, the process of standard heating supply analysis and calculation, and the process of calculating heating consumption deviation values ​​include:

[0014] The indoor temperature demand data, supply and return water temperature difference and heat consumption in the first user collected data are analyzed and calculated together with historical heating data and outdoor ambient temperature to generate the first standard heating data.

[0015] When the historical heating data of the same user is insufficient, the historical heating data of other users in the same unfavorable loop is called to supplement it, and the standard heating of the current user is corrected by combining the outdoor ambient temperature and the temperature difference between the supply and return water at the current time.

[0016] The heat consumption deviation value calculation process includes: reading the heat consumption in the first user's collected data and the standard heat supply in the first standard heat supply data for each user, comparing them one by one according to the same user and the same current time period to obtain the heat consumption deviation value, and synchronously writing the actual data of the supply and return water temperature difference, valve opening degree and indoor temperature corresponding to the user into the deviation record, and summarizing the deviation records of all users to generate the first heat consumption deviation value sequence.

[0017] Furthermore, the process of screening overheated users and matching preset valve openings includes:

[0018] Users whose heat consumption is consistently higher than the standard heat supply, whose current valve opening is higher than the preset valve opening, and who do not belong to the most unfavorable loop are extracted from the first heat consumption deviation value sequence and recorded as overheated users.

[0019] For each user in the overheated user execution record, read their preset valve opening and current valve opening, determine the target opening range after reducing the current valve opening, and generate a first current valve opening reduction command.

[0020] Furthermore, the process of combining the reduction of the current valve opening of the user inlet flow regulator with the maintenance of the inlet differential pressure of the user inlet flow regulator includes:

[0021] The combined action includes: after receiving the first current valve opening reduction instruction, the heat exchange station controller or local measurement and control terminal sends the instruction to the user inlet flow regulating device at the corresponding user's household pipeline inlet, and the user inlet flow regulating device gradually completes the current valve opening reduction process according to the target opening range;

[0022] While the user inlet flow regulating device performs the current valve opening reduction process, the user inlet flow regulating device installed at the same user's household pipeline inlet performs inlet differential pressure maintenance process. This process maintains the pressure difference between the water supply side and the return side at the user inlet, so that the flow change after the current valve opening is reduced forms a stable record at the user inlet.

[0023] The current valve opening, valve status, supply and return water temperature difference, and inlet differential pressure status of the same user before and after execution are rewritten into the execution record. The inlet differential pressure maintenance results of all executing users are summarized to generate the first inlet differential pressure maintenance data.

[0024] The first inlet differential pressure holding data includes the user inlet differential pressure status after the current valve opening is reduced, the valve status of the corresponding user inlet flow regulating device, and the holding status of the user inlet flow regulating device.

[0025] Furthermore, the process of acquiring and processing the most unfavorable loop differential pressure includes:

[0026] After receiving the first inlet differential pressure holding data, the pressure transmitters set in the top floor water supply pipe section and the top floor return pipe section of the most unfavorable loop are invoked to read the top floor water supply pressure and the top floor return pressure according to the current time period, perform differential pressure generation, anomaly screening and record updating, and generate the first most unfavorable loop differential pressure data.

[0027] The first most unfavorable loop differential pressure data includes the most unfavorable loop differential pressure record for the current time period, the pressure transmitter status, the batch identification, and the time relationship with the first inlet differential pressure holding data.

[0028] Furthermore, the process of comparing differential pressure safety thresholds and analyzing and calculating the operating frequency of the heat exchange station circulating pumps includes:

[0029] Read the current differential pressure record in the first most unfavorable loop differential pressure data and compare it with the pre-stored differential pressure safety threshold; when the current differential pressure record is higher than the upper edge of the differential pressure safety threshold, read the current operating frequency of the heat exchange station circulating pump, the operating frequency change record of the previous current period, and the number of executing users in the first inlet differential pressure maintenance data, generate an analysis result of reducing the operating frequency, and write the result into the adjustment record;

[0030] When the current differential pressure record is within the differential pressure safety threshold range, an analysis result is generated to maintain the operating frequency.

[0031] When the current differential pressure record is below the lower edge of the differential pressure safety threshold, first check the pressure transmitter status and the first inlet differential pressure holding data. If it is confirmed that the overheating user reduction processing has not been fully written, wait for the next batch of data acquisition. If it is confirmed that the writing has been completed, generate the analysis result of slightly adjusting the operating frequency.

[0032] The first operating frequency adjustment data is generated by summarizing the direction of operating frequency change, the magnitude of operating frequency change, the execution period and the review status corresponding to the current time period.

[0033] The differential pressure safety threshold is not simply a protection threshold, but a boundary for determining whether the user-side throttling benefits can be taken over by the system side. The differential pressure comparison is triggered by preceding user-side actions rather than by independent system operation requirements.

[0034] Furthermore, the process of regulating the operating frequency of the frequency converter and controlling the operating speed of the circulating pump in the heat exchange station includes:

[0035] The heat exchange station controller receives the first operating frequency adjustment data, determines whether the execution period has arrived and whether the verification status is executable. If so, it sends an operating frequency adjustment command to the heat exchange station frequency converter.

[0036] The frequency converter of the heat exchange station changes the operating frequency according to the adjustment command, which drives the circulating pump of the heat exchange station to change the operating speed accordingly, thereby changing the hot water flow in the secondary network pipeline.

[0037] The command status, feedback status, operating frequency status, and operating status of the current time period are summarized to generate the first operating frequency control data.

[0038] Furthermore, the process for screening and handling users whose room temperature does not meet the standard includes:

[0039] Read the first operating frequency control data and determine whether the operating speed control of the heat exchange station circulating pump has been written into the execution record;

[0040] The first user classification data is called up, and users whose room temperature does not meet the standard are filtered one by one. The filtering process puts the actual indoor temperature data, indoor temperature demand data, heat consumption deviation value, current valve opening degree and the most unfavorable loop position into the same user record for verification.

[0041] Extract candidate records of users whose room temperature does not meet the standard, and check whether the user has been included in the overheating user execution record in the previous steps. If the user is not in the overheating user execution record and is still in the state of room temperature not meeting the standard, proceed to heat consumption review.

[0042] The heat consumption verification process includes: continuously verifying the user's heat consumption, supply and return water temperature difference, and valve status in the current and adjacent time periods. If the heat consumption is continuously lower than the standard heat supply and the actual indoor temperature data is continuously lower than the indoor temperature demand data, the user is written into the adjustment execution record, and a first current valve opening adjustment instruction is generated.

[0043] Furthermore, the process of increasing the current valve opening and performing closed-loop verification on the user inlet flow regulating device includes:

[0044] The current valve opening adjustment process of the user inlet flow regulating device includes:

[0045] The heat exchange station controller or local monitoring and control terminal receives the first current valve opening increase instruction and sends it to the user inlet flow regulating device at the corresponding user's household pipeline inlet, and performs the current valve opening increase processing according to the increase period;

[0046] The adjustment process is carried out in stages. After each adjustment, the heat meter continues to collect flow rate, supply water temperature, return water temperature, supply and return water temperature difference and heat consumption. The indoor wireless temperature control panel and room temperature collector continue to collect real indoor temperature data to form a new user record after the adjustment. The data of the second user is re-merged according to the same user, the same current time period and the same household pipe inlet.

[0047] The closed-loop verification process includes: heat consumption deviation value verification process: compare the heat consumption in the second user's collected data with the previous standard heating caliber again, and check whether the heat consumption of the user whose room temperature does not meet the standard is still lower than the standard heating or has returned to the standard heating range after the current valve opening is increased.

[0048] Most unfavorable loop pressure difference verification process: The second user-collected data is compared with the first most unfavorable loop pressure difference data to determine whether the current adjustment action has caused the most unfavorable loop pressure difference to deviate from the recording range corresponding to the pressure difference safety threshold again;

[0049] One-click recovery judgment and processing: When the heat consumption deviation value verification result shows that the heat consumption is still low, or the most unfavorable loop pressure difference verification result shows that the pressure difference record has continuous abnormal fluctuations, the system automatically saves the balance control strategy, control parameters and valve opening information, compares them with the execution link of the current period, and determines whether it is necessary to restore the relevant user inlet flow regulation device and heat exchange station frequency converter to the recorded state of the previous stable period.

[0050] The verification results, recovery call records, and closed-loop status are summarized to generate the first closed-loop verification data, which serves as the preliminary record for the next round of data cleaning and alignment processing.

[0051] The key innovations of this invention include:

[0052] (1) Based on the flow rate, supply water temperature, return water temperature, supply and return water temperature difference and heat consumption collected by the heat meter, as well as the real indoor temperature data and indoor temperature demand data collected by the indoor wireless temperature control panel and room temperature collector, the data is first cleaned and aligned to obtain the first user data. Then, combined with historical heating data, outdoor ambient temperature and supply and return water temperature difference, the first standard heating data is obtained. The heat consumption deviation value is calculated and processed to form the first heat consumption deviation value sequence. The heat consumption deviation value sequence is used as the preliminary basis for subsequent user classification and control actions.

[0053] (2) Based on the first user classification data and the first current valve opening reduction instruction, the current valve opening of the user inlet flow regulating device is reduced at the user inlet position, and the inlet differential pressure maintenance processing of the user inlet flow regulating device is performed simultaneously to form the first inlet differential pressure maintenance data, so that the overheated user screening, preset valve opening matching, current valve opening reduction and inlet differential pressure maintenance are in the same processing link.

[0054] (3) Based on the first inlet differential pressure holding data, the top floor water supply pressure and top floor return water pressure collected by the pressure transmitter, the most unfavorable loop differential pressure collection and processing is first performed to obtain the first most unfavorable loop differential pressure data. Then, the differential pressure safety threshold comparison and the heat exchange station circulating pump operation frequency analysis and calculation processing are performed to obtain the first operating frequency adjustment data. Combined with the first operating frequency control data, the first user classification data, the first current valve opening increase instruction, the second user collection data and the first closed loop verification data, a continuous closed loop link is formed by first reducing the current valve opening, then adjusting the operating frequency, and then increasing the current valve opening.

[0055] The following are its main beneficial effects:

[0056] (1) In view of the problems of unclear correspondence between heat consumption and indoor temperature data and separation of heat consumption deviation value and control action in the existing technology, by continuously generating the first user data, the first standard heat supply data and the first heat consumption deviation value sequence, a direct correspondence is formed between the user-side data and the subsequent user classification data, and the subsequent screening of overheated users and the screening of users whose room temperature does not meet the standard have a unified data caliber.

[0057] (2) In view of the problem that the hot water flow is transferred to other users after the current valve opening is reduced in the existing technology, the combination of reducing the current valve opening of the user inlet flow regulating device and maintaining the inlet differential pressure of the user inlet flow regulating device is used to make the first current valve opening reduction command correspond to the first inlet differential pressure maintenance data at the user inlet. The user side control action and the inlet differential pressure status are recorded synchronously, and the subsequent most unfavorable loop differential pressure acquisition and processing has a clear pre-order input.

[0058] (3) In view of the problem of insufficient connection between the most unfavorable loop pressure difference and the operating frequency adjustment in the existing technology, by continuously processing the first most unfavorable loop pressure difference data, the first operating frequency adjustment data and the first operating frequency control data, the pressure transmitter acquisition results are in the same link as the control process of the heat exchange station frequency converter and the heat exchange station circulating pump, and the system-side adjustment action and the user-side current valve opening reduction processing are kept in the same link.

[0059] (4) In view of the problem that the handling of users whose room temperature does not meet the standard is disconnected from the preceding adjustment link in the existing technology, the screening of users whose room temperature does not meet the standard and the heat consumption verification are triggered by the first operating frequency control data and the first user classification data, and then the first current valve opening adjustment instruction is generated and the second user collection data is obtained, so that the subsequent handling of users whose room temperature does not meet the standard is based on the preceding user classification and system-side control records.

[0060] (5) In view of the problem that the control process is repeatedly switched and the operation record is difficult to be continuously updated in the existing technology, the first closed loop verification data is returned to the data cleaning and alignment process and the heat consumption deviation value calculation process, so that the heat consumption deviation value verification, the most unfavorable loop pressure difference verification and the one-key recovery judgment form a continuous update relationship with the previous acquisition, judgment and control records. Attached Figure Description

[0061] Figure 1 A flowchart illustrating an energy-saving method for centralized heating secondary network regulation based on individual household heat feedback, provided as an embodiment of this application;

[0062] Figure 2 This is a structural block diagram of a centralized heating secondary network regulation and energy-saving method based on individual household heat feedback, provided in an embodiment of this application. Detailed Implementation

[0063] Example 1: Refer to Figure 1 This is a flowchart illustrating an energy-saving method for centralized heating secondary network regulation based on individual household heat feedback, provided by an embodiment of the present invention. The process may include at least steps S100-S400:

[0064] S100. Acquire multi-source data, perform data cleaning and alignment processing, standard heating analysis and calculation processing, and heat consumption deviation value calculation processing to obtain the first heat consumption deviation value sequence.

[0065] S200. Based on the first heat consumption deviation value sequence, perform overheated user screening and preset valve opening matching processing, and execute a combination of reducing the current valve opening of the user inlet flow regulating device and maintaining the inlet differential pressure of the user inlet flow regulating device at the user inlet to generate the first inlet differential pressure maintenance data.

[0066] S300: Based on the first inlet differential pressure holding data, perform the most unfavorable loop differential pressure acquisition processing, differential pressure safety threshold comparison and heat exchange station circulating pump operation frequency analysis and calculation processing, and then perform heat exchange station inverter operation frequency adjustment and circulating pump operation speed control processing to generate the first operation frequency control data.

[0067] S400: Based on the first operating frequency control data, perform user screening for non-compliant room temperature, increase the current valve opening of the user inlet flow regulating device, and perform closed-loop verification processing to generate the first closed-loop verification data.

[0068] Step S100 includes at least steps S110-S130:

[0069] S110. Acquire multi-source data, perform data cleaning and alignment processing, and obtain the first user-collected data;

[0070] The multi-source data includes flow rate, supply water temperature, return water temperature, supply and return water temperature difference and heat consumption collected by the heat meter, as well as real indoor temperature data and indoor temperature demand data collected by the indoor wireless temperature control panel and room temperature collector.

[0071] Specifically, the heat meter is installed at the inlet of the household pipe for each user, the flow rate is the real-time flow rate of hot water through the household pipe inlet, the supply water temperature is the temperature of the hot water entering the user's room, the return water temperature is the temperature of the hot water leaving the user's room and returning to the secondary network pipe, the supply and return water temperature difference is the difference between the supply water temperature and the return water temperature, and the heat consumption is the heat consumption data measured by the heat meter in the current time period.

[0072] The indoor wireless temperature control panel and the room temperature collector are installed in the end user's room. The actual indoor temperature data is the collected result of the indoor air temperature at the current time. The indoor temperature demand data is the demand temperature data written by the end user on the indoor wireless temperature control panel, or the demand temperature data pre-stored on the digital management platform. The temperature control panel is used to collect actual indoor temperature data and allow users to set their indoor temperature demand data.

[0073] In actual operation, the digital management platform receives data uploaded by the heat meter, the indoor wireless temperature control panel, and the room temperature collector after the current time period arrives, and merges them according to the user correspondence.

[0074] Data cleaning involves filtering out duplicate uploads, intermittent data collection, data jumps, and obvious discrepancies, and then supplementing them by combining similar records from the previous time period of the same user and similar records already uploaded in the same secondary network pipeline. Alignment involves putting the actual data of the same user's flow rate, supply water temperature, return water temperature, supply and return water temperature difference, heat consumption, indoor temperature, and indoor temperature demand data in the same user record for the current time period, so that the data correspond within the same current time period.

[0075] Furthermore, when the heat meter has completed its upload but the indoor wireless temperature control panel or room temperature collector has not yet completed its upload, the digital management platform first retains the heat meter data and records the corresponding location of the actual indoor temperature data in the operation report; after the indoor wireless temperature control panel or room temperature collector completes its upload, the data alignment process for the same user is then performed.

[0076] When both indoor wireless temperature control panels and room temperature data collectors are present, the digital management platform prioritizes using the more complete set of real indoor temperature data uploaded within the same current time period. When there are differences between the two, the differences are recorded in the operation report, and both sets of records are retained for subsequent review and retrieval.

[0077] Understandably, in the scenario of secondary network operation in residential buildings, if a nearby user uploads flow rate, water supply temperature and heat consumption at the beginning of the morning heating season, while the actual indoor temperature data is uploaded later, the digital management platform will first clean the heat meter data of that nearby user, and then complete the alignment after the actual indoor temperature data arrives, so as to avoid mixing data from different current time periods into the same user's record.

[0078] After the above processing, the digital management platform generates the first user collection data by generating complete records corresponding to the same user, the same current time period, and the same household pipeline inlet. The first user collection data is recorded as the input for subsequent S120 calls. At the same time, the first user collection data continues to serve as the first user collection data input for S130, and this record link continues to be passed to the preceding source on which the user classification processing in S200 depends.

[0079] S120. Based on the first user-collected data, perform historical heating data information, outdoor ambient temperature and supply and return water temperature difference analysis and calculation to obtain the first standard heating data.

[0080] Specifically, the historical heating data is continuously stored by the digital management platform, including corresponding records of the same user's flow rate, supply water temperature, return water temperature, supply and return water temperature difference, heat consumption, real indoor temperature data and indoor temperature demand data for multiple current time periods. The outdoor ambient temperature is the external temperature data read by the digital management platform in the current time period.

[0081] The first standard heating data is not a simple value, nor is it given directly based solely on the actual indoor temperature data. Instead, it is the heating data for the current period obtained by analyzing and calculating the indoor temperature demand data, the supply and return water temperature difference, and the heat consumption from the first user-collected data, together with the historical heating data and the outdoor ambient temperature.

[0082] In practice, the digital management platform first reads historical heating data for the same user, then filters out historical records that are close to the current outdoor ambient temperature, have the same or adjacent indoor temperature demand data, and have the same supply and return water temperature difference. Then, based on the correspondence between the heat consumption, the actual indoor temperature data and the indoor temperature demand data in the historical records, the standard heating for the current period is formed.

[0083] The standard heating supply referred to here is the heating supply data that a particular user should receive at the current time period. It is not the zone pressure difference, the building return water temperature, or the secondary network heating temperature setting value.

[0084] Furthermore, in one processing method, the digital management platform prioritizes calling the historical heating data information of the same user for analysis and calculation; in another processing method, when the historical heating data information of the same user is insufficient, the digital management platform calls the historical heating data information of other users in the same unfavorable loop to supplement it, and adjusts the standard heating of the current user in combination with the outdoor ambient temperature and the supply and return water temperature difference at the current time.

[0085] During the processing, if a user's historical heating data is found to have long-term data collection interruptions, the digital management platform will remove that part of the historical data from the analysis and calculation process and write the removal result into the operation report. If the outdoor ambient temperature changes significantly during the current period, the digital management platform will prioritize calling the record that is closer to the current outdoor ambient temperature from the same user's historical heating data to reduce the deviation caused by directly applying historical records under different outdoor ambient temperature conditions.

[0086] Understandably, in a continuous operation scenario during the heating season, the same user will form a stable set of heat consumption records under conditions of similar outdoor ambient temperature, the same indoor temperature demand data, and a similar supply and return water temperature difference. The digital management platform completes the analysis and calculation of the standard heat supply for the current period by calling this set of historical heating data information.

[0087] After completing the analysis and calculation, the digital management platform writes the standard heating amount corresponding to the current user into the first standard heating amount data, and uses the first standard heating amount data as the first standard heating amount data input in S130. At the same time, this data caliber continues to be maintained in the subsequent S200 and S400 pre-judgment links for heat consumption verification and screening of users whose room temperature does not meet the standard.

[0088] S130. Based on the first user-collected data and the first standard heating data, perform heat consumption deviation value calculation and processing to obtain the first heat consumption deviation value sequence.

[0089] Specifically, the calculation and processing of the heat consumption deviation value is performed by the digital management platform for each user. The digital management platform first reads the heat consumption data collected from the first user, then reads the corresponding standard heat supply data from the first standard heat supply data, and then compares them one by one according to the same user, the same current time period, and the same household pipe inlet to obtain the comparison result of the user's heat consumption relative to the standard heat supply in the current time period. The heat consumption deviation value referred to here is not a comparison result of indoor temperature alone, nor a comparison result of the most unfavorable loop pressure difference alone, but rather the corresponding deviation data between heat consumption and standard heat supply.

[0090] Furthermore, after completing the comparison for a single user, the digital management platform will also synchronously write the user's corresponding supply and return water temperature difference, valve opening, and indoor temperature data into the user's deviation record. This allows subsequent steps to simultaneously view the user's current valve opening status, supply and return water temperature difference status, and indoor temperature data status when reading the heat consumption deviation value.

[0091] If a user's heat consumption is significantly higher than the standard heat supply, the digital management platform will record the comparison result of "higher than the standard heat supply" in the user's deviation record; if the heat consumption is within the standard heat supply range, the platform will record the comparison result of "within the standard heat supply range"; if the heat consumption is lower than the standard heat supply, the platform will record the comparison result of "lower than the standard heat supply".

[0092] For any abnormal situations that occur during the comparison process, such as a sudden increase in heat consumption but no synchronous change in the supply and return water temperature difference, or low heat consumption but no corresponding change in the actual indoor temperature data, the digital management platform first retains the user's deviation record, and then writes the abnormal situation into the operation report for subsequent S400 heat consumption verification.

[0093] After completing the comparison of all users one by one, the digital management platform arranges all deviation records into the first heat consumption deviation value sequence according to the corresponding order of users in the secondary network pipeline.

[0094] The first heat consumption deviation value sequence is directly used as the first heat consumption deviation value sequence input in S210, and the same comparison caliber is continuously used in the subsequent screening of overheated users in S220, screening of users whose room temperature does not meet the standard in S410, and heat consumption verification processing.

[0095] Understandably, in actual engineering implementation, when the heat consumption of near-end users is consistently higher than the standard heat supply, while the heat consumption of end users is close to or lower than the standard heat supply, the digital management platform can distinguish the two types of users in the same current time period through the first heat consumption deviation value sequence, and there is no need to start from the building return water temperature or zone pressure difference to complete the first round of judgment.

[0096] The key technical effect of this step is that it converges the heat consumption, supply and return water temperature difference, and indoor temperature demand data collected by the heat meter into a judgment chain for the same user and the same current time period, forming a first heat consumption deviation value sequence that can be directly called by S210. Compared to the processing path that only initiates adjustment based on actual indoor temperature data or zone pressure difference, this step moves the standard heating supply to the user-side judgment stage, allowing subsequent screening of overheated users and processing of reducing the current valve opening to proceed continuously along the same data caliber.

[0097] Step S200 includes at least steps S210-S230:

[0098] S210. Obtain the first heat consumption deviation value sequence, perform user inlet flow regulation device opening and parameter matching processing for unfavorable loops, and obtain the first user classification data.

[0099] Specifically, the first heat consumption deviation value sequence comes from the output result of S130. The first heat consumption deviation value sequence contains the corresponding deviation record of each user's heat consumption and standard heat supply in the current period, and retains the actual data of the supply and return water temperature difference, valve opening, valve status and indoor temperature of the same user.

[0100] The unfavorable loop is the user path in the secondary network pipeline that has a longer heating path and is more sensitive to changes in the top floor water supply pressure and top floor return pressure. The opening degree and parameters of the user inlet flow regulating device are the current valve opening degree, the preset valve opening degree, and the corresponding opening degree record of the user in the historical heating data information of the user inlet flow regulating device installed at the inlet of the corresponding user's household pipeline.

[0101] After receiving the first heat consumption deviation value sequence, the digital management platform first sorts the users according to their positional relationship in the secondary network pipeline, and then calls the user location table corresponding to the most unfavorable loop where the pressure transmitter is located, comparing each user to see if they belong to the unfavorable loop.

[0102] For users belonging to unfavorable loops, the digital management platform further reads the opening degree and parameters of the user's inlet flow regulation device to determine the corresponding status of the current valve opening and the preset valve opening. For users not belonging to unfavorable loops, the platform also reads the opening degree and parameters of their inlet flow regulation device and matches them with the heat consumption deviation value, supply and return water temperature difference and valve status.

[0103] The matching described here does not simply determine whether a certain data point is out of range, but rather synchronously verifies the heat consumption deviation value with the location of the unfavorable loop, the current valve opening, the preset valve opening, the supply and return water temperature difference, and the actual indoor temperature data in the same user record.

[0104] Furthermore, when a user's heat consumption consistently exceeds the standard heating supply, the current valve opening is higher than the record for similar users, and the user is not in the most unfavorable loop, the digital management platform adds the user to the overheating user candidate record; when a user's heat consumption is within the standard heating supply range, and the current valve opening is consistent with or close to the preset valve opening, the user is added to the standard user candidate record; when a user's heat consumption is lower than the standard heating supply, and the actual indoor temperature data is lower than the indoor temperature demand data, or the user is in the most unfavorable loop, the user is added to the room temperature non-compliant user candidate record.

[0105] Understandably, in a real-world residential building scenario, near-end users typically exhibit a combination of high heat consumption and excessively large valve opening, while end-users are more likely to exhibit a combination of low heat consumption and lower-than-normal indoor temperature. The digital management platform uses these combined records from the same time period to complete the matching of the opening and parameters of the user inlet flow regulation device for unfavorable loops.

[0106] After processing, the digital management platform summarizes the classification results of various users into the first user classification data. The first user classification data serves as the input for S220 and is subsequently used in the screening of users whose room temperature does not meet the standard and the verification of heat consumption in S410, thus forming the same classification standard that is passed from S210 to S220 and then to S400.

[0107] S220. Based on the first user classification data, perform overheating user screening and preset valve opening matching processing to obtain the first current valve opening reduction instruction;

[0108] Specifically, the first user classification data comes from S210. The first user classification data includes at least corresponding records of overheated users, standard users, and users whose room temperature does not meet the standard. Each corresponding record contains the user's current valve opening, preset valve opening, valve status, and heat consumption deviation value in the current time period.

[0109] The digital management platform first extracts overheated user records from the first user category data within the current time period, and then completes the screening of overheated users one by one according to whether the user is located in the most unfavorable loop, the difference between the current valve opening and the preset valve opening, and the duration of heat consumption higher than the standard heat supply.

[0110] The overheating user screening described here further narrows down the candidate records of overheating users to the set of users who need to perform the current valve opening reduction process.

[0111] Specifically, for users whose heat consumption is only briefly higher than the standard heat supply in a single current period, but whose supply and return water temperature difference and indoor temperature data do not change synchronously, the digital management platform will first keep them in the observation record and will not immediately write the first current valve opening reduction instruction; for users whose heat consumption is continuously higher than the standard heat supply, whose current valve opening is higher than the preset valve opening, and who do not belong to the most unfavorable loop, the digital management platform will write them into the execution record.

[0112] The preset valve opening matching process involves reading the user's preset valve opening and current valve opening based on the user number in the execution record, determining the target opening range after reducing the current valve opening, and judging whether the user's inlet flow regulating device is in an executable opening adjustment state based on the valve status.

[0113] Furthermore, when the current valve opening of a certain overheating user is close to the preset valve opening, the digital management platform does not directly issue a large reduction instruction, but issues a small reduction instruction; when the current valve opening of a certain overheating user is significantly higher than the preset valve opening, the digital management platform issues a more obvious reduction instruction.

[0114] For standard users, the digital management platform maintains the original state; for users whose room temperature does not meet the standard, the digital management platform only retains their classification results and does not generate an instruction to increase the current valve opening in this step.

[0115] Understandably, this processing chain fixes the order of "screening overheated users first, then matching preset valve openings" to avoid performing opposite opening operations on overheated users and users whose room temperature does not meet the standard at the same time period.

[0116] After completing the screening and matching, the digital management platform writes the current valve opening reduction content corresponding to each superheated user into the first current valve opening reduction instruction. The first current valve opening reduction instruction serves as the direct input of S230. At the same time, this instruction link is also related to the subsequent worst loop differential pressure acquisition and processing of S300, because the inlet differential pressure holding state after S230 is executed will continue to be transmitted to S310 for invocation.

[0117] S230. Based on the first current valve opening reduction instruction, perform current valve opening reduction of user inlet flow regulating device and inlet differential pressure maintenance of user inlet flow regulating device to obtain first inlet differential pressure maintenance data;

[0118] Specifically, the first current valve opening reduction instruction comes from S220. The first current valve opening reduction instruction includes the executing user number, the current valve opening of the corresponding user inlet flow regulating device, the target opening range, and the execution time period.

[0119] After receiving the first instruction to reduce the opening of the current valve, the heat exchange station controller or local monitoring and control terminal sends the instruction to the user inlet flow regulating device at the corresponding user's household pipeline inlet. The user inlet flow regulating device then gradually completes the reduction of the current valve opening according to the target opening range.

[0120] In one specific implementation, the user inlet flow regulating device can be achieved by a user-end electric balancing valve and a user-operated self-regulating differential pressure control valve connected in series. The user-end electric balancing valve receives commands to adjust the opening, while the user-operated self-regulating differential pressure control valve maintains the inlet differential pressure. In another specific implementation, the device can also employ an integrated electric self-regulating flow control valve, simultaneously achieving electric opening regulation and differential pressure self-regulation functions within a single valve body.

[0121] It should be noted that the user inlet flow regulating device can be a combination of discrete components, such as a user-side electric balancing valve and a user-operated self-regulating differential pressure control valve connected in series; or it can be an integrated device, such as an electric self-regulating flow control valve. Regardless of whether it adopts a discrete or integrated form, it can achieve the coordinated function of electric valve opening regulation and inlet differential pressure self-regulation.

[0122] The gradual completion mentioned here refers to adjusting the valve in stages within one or more consecutive current time periods, rather than switching the current valve opening to the final position all at once. The reason for this is that the hot water flow in the same secondary network pipeline will change with the valve status of multiple users. Adjusting in stages makes it easier for the digital management platform to simultaneously observe and record changes in heat consumption, supply and return water temperature difference, and valve status.

[0123] While the user inlet flow regulating device reduces the current valve opening, the user inlet flow regulating device installed at the same user's household pipeline inlet maintains the inlet differential pressure.

[0124] The user inlet flow regulating device is located at the inlet of the household pipeline. The inlet differential pressure maintenance process maintains the pressure difference between the water supply side and the return side at the user inlet, thereby ensuring that the flow change after the current valve opening decreases is recorded stably at the user inlet.

[0125] Furthermore, after receiving feedback on the opening degree and status of the user's inlet flow regulating device, the digital management platform rewrites the current valve opening degree, valve status, supply and return water temperature difference, and inlet differential pressure status of the same user before and after execution into the execution record. If a user experiences a valve status abnormality after reducing the current valve opening degree, or if the user's inlet flow regulating device fails to complete the inlet differential pressure maintenance process, the digital management platform suspends the user's subsequent adjustments and writes the abnormality into the operation report for S430's one-click recovery judgment call.

[0126] Understandably, in a high-rise residential building engineering embodiment, the digital management platform will first issue a first current valve opening reduction command to the near-end overheated user. The user inlet flow regulating device will first adjust from the larger current valve opening to a position close to the preset valve opening, while the user inlet flow regulating device continues to maintain the user inlet differential pressure. The heat consumption, supply and return water temperature difference and valve status after execution will continue to be recorded by the heat meter and valve feedback, thereby providing a preliminary state for the subsequent acquisition of the most unfavorable loop differential pressure.

[0127] After processing, the digital management platform will summarize the inlet differential pressure maintenance results of all users into the first inlet differential pressure maintenance data. The first inlet differential pressure maintenance data serves as the direct input of S310 and as the prerequisite operating status for subsequent S320 and S330 to determine the operating frequency adjustment of the heat exchange station circulating pump.

[0128] The key technical advantage of this step is that it integrates overheat user screening, preset valve opening matching, current valve opening reduction, and inlet differential pressure maintenance into a single, continuous processing loop. The user classification results from the previous stage can be directly converted into executable instructions for the next stage. Compared to a processing path that first checks the zone differential pressure and then adjusts the valve opening, this step first reduces excessive heating records at the user inlet, and then transmits the inlet differential pressure maintenance status to the most unfavorable loop differential pressure acquisition step. This provides a clear source of preceding data for subsequent frequency adjustment of the heat exchange station's inverter.

[0129] In one specific embodiment, firstly in S210, the first heat consumption deviation value sequence is obtained, and the opening degree and parameter matching processing of the user inlet flow adjustment device for the unfavorable loop are performed to obtain the first user classification data.

[0130] The first heat consumption deviation value sequence contains records of the corresponding deviations between each user's heat consumption and the standard heat supply during the current time period, and retains the actual data of the supply and return water temperature difference, valve opening, valve status, and indoor temperature for the same user. After receiving the sequence, the digital management platform first sorts the users according to their positional relationship in the secondary network pipeline, and then calls the user location table corresponding to the most unfavorable loop where the pressure transmitter is located, comparing each user one by one to see if they belong to the unfavorable loop. For users belonging to the unfavorable loop, the opening and parameters of their user inlet flow regulating device are further read to determine the corresponding status of the current valve opening and the preset valve opening; for users not belonging to the unfavorable loop, their opening and parameters are also read, and matched with the heat consumption deviation value, supply and return water temperature difference, and valve status. The matching is not just judging whether a certain data exceeds the range, but synchronously verifying the heat consumption deviation value with the unfavorable loop location, current valve opening, preset valve opening, supply and return water temperature difference, and actual indoor temperature data in the same user record.

[0131] Therefore, define user In the current period Heat consumption deviation coefficient As given by formula ①:

[0132] Formula①

[0133]

[0134] Variable and symbol definition:

[0135] :user In the current period The heat consumption deviation coefficient, a positive value indicates overheating, and a negative value indicates underheating;

[0136] User index, a positive integer, with a value range of [value range missing]. ( (Total number of users in the secondary network).

[0137] : Current time period index, integer, corresponding to a collection and control cycle of the digital management platform;

[0138] :user In the current period The actual heat consumption, in kWh, is data collected from the first user uploaded by the heat meter.

[0139] :user In the current period Standard heating capacity, in kWh, data source is the first standard heating capacity data output by S120;

[0140] : Minimal positive number, take This is used to avoid division by zero errors.

[0141] Extracting each user's data from the first heat consumption deviation value sequence and Substituting into formula ①, we get .

[0142] Simple numerical example: A user , , ,but This indicates an overheating of 25%.

[0143] Furthermore, define the valve opening degree matching degree. Integrate current valve opening (Value range 0~100) and preset valve opening As given by formula ②:

[0144] Formula②

[0145]

[0146] Variable and symbol definition:

[0147] :user In the current period The valve opening degree matching degree, close to 1 indicates that the current opening degree matches the preset opening degree well;

[0148] : Same as formula ①;

[0149] :user In the current period The current valve opening of the user inlet flow regulating device, with a value range of 0~100, and the data source is the user-side valve feedback;

[0150] :user The preset valve opening is stored in the preset parameter table of the digital management platform;

[0151] : Same as formula ①;

[0152] : Absolute value symbol, used to calculate the absolute value of the difference between two openings.

[0153] when (Overheat threshold, e.g., 0.15) and If the user does not belong to the most unfavorable cycle (matching lower limit, e.g., 0.8), then write the user into the overheated user candidate record; when... exist Inner and When, write to the standard user candidate record; when Write a candidate record for users whose room temperature does not meet the standard when the user is in the most unfavorable loop (underheating threshold, e.g., -0.1) or when the user is in the most unfavorable loop.

[0154] This step outputs the first user classification data, which includes corresponding records for overheated users, standard users, and users whose room temperature does not meet the standard. This data serves as the input for S220 and is subsequently called in S410.

[0155] This section summarizes the technical effects: By quantitatively comparing the deviation coefficient and the matching degree, the fuzzy overheating / underheating judgment is transformed into a repeatable numerical judgment, thus realizing the automation and standardization of user classification.

[0156] Further, in S220, based on the first user classification data, overheated user screening and preset valve opening matching processing are performed to obtain a first current valve opening reduction instruction. The digital management platform first extracts overheated user records from the first user classification data, and then completes the overheated user screening one by one according to whether the user is in the most unfavorable loop, the difference between the current valve opening and the preset valve opening, and the duration of heat consumption exceeding the standard heating supply. Specifically, users whose heat consumption is only briefly higher than the standard heating supply in a single current period, but whose supply and return water temperature difference and indoor temperature data do not change synchronously, are retained in the observation record; users whose heat consumption is continuously higher than the standard heating supply, whose current valve opening is higher than the preset valve opening, and who do not belong to the most unfavorable loop, are written into the execution record. The preset valve opening matching processing reads the preset valve opening and the current valve opening of the user according to the user number in the execution record to determine the target opening range after the current valve opening is reduced.

[0157] Define overheating severity The formula is given by formula ③, which is obtained directly from formula ①. And obtained from formula ② :

[0158] Formula③

[0159]

[0160] Variable and symbol definition:

[0161] :user In the current period The severity of overheating is indicated by a higher value, which means that the valve opening needs to be reduced more.

[0162] : The coefficient of deviation of heat consumption from formula ①;

[0163] : Valve opening matching degree from formula ②;

[0164] :user In the current period The duration factor is calculated using the following formula: ,in:

[0165] :user The number of consecutive periods during which heat consumption exceeded the standard heat supply, and the data source is historical deviation records;

[0166] : A preset continuous threshold, for example, 3, is stored in the digital management platform;

[0167] : Minimum value function.

[0168] when When the value is 0.1 (for example), it is determined that the valve opening needs to be reduced.

[0169] Simple numerical example: A user , ,but Number of consecutive overheating periods , , ; ,like Then it will be triggered.

[0170] When determining the target opening range, a piecewise linear reduction strategy is adopted, and the reduction step size is calculated using formula ④. :

[0171] Formula④

[0172]

[0173] Variable and symbol definition:

[0174] :user In the current period The amount by which the current valve opening is reduced;

[0175] The maximum single reduction step size, for example, 5%, is stored in the digital management platform;

[0176] The proportional coefficient, for example, is 0.2 (i.e., 20%), and is stored in the digital management platform;

[0177] : Definition as above;

[0178] : The minimum value function, which outputs the smaller of the two values.

[0179] Simple numerical examples: , The difference is 20%. ,but ; , The product is Multiplying by 100 gives 0.3077%, which is much smaller than... Therefore (In actual engineering, it can be rounded to 0.5%).

[0180] If the difference is large and the severity is high, the reduction step size will be larger. After screening and matching are completed, the digital management platform writes the current valve opening reduction content corresponding to each overheating user into the first current valve opening reduction instruction, which serves as the direct input of S230. In summary, this section summarizes the technical effects: by utilizing the duration factor and piecewise linear reduction formula, the screening of overheating users and the valve adjustment range are precisely quantified, avoiding over-adjustment or frequent adjustments, and improving the stability of control.

[0181] Furthermore, in S230, based on the first current valve opening reduction command, the current valve opening of the user inlet flow regulating device is reduced and the inlet differential pressure of the user inlet flow regulating device is maintained, resulting in the first inlet differential pressure maintenance data. After receiving the command, the heat exchange station controller or local monitoring terminal sends the command to the user inlet flow regulating device at the corresponding user's household pipeline inlet. The user inlet flow regulating device gradually completes the current valve opening reduction processing according to the target opening range. While the user inlet flow regulating device is performing the current valve opening reduction processing, the user inlet flow regulating device installed at the same user's household pipeline inlet performs inlet differential pressure maintenance processing to maintain the pressure difference between the supply and return water sides at the user inlet, thereby ensuring that the flow change after the current valve opening reduction forms a stable record at the user inlet. To quantify the inlet differential pressure maintenance effect, an inlet differential pressure maintenance coefficient is defined. As given by formula ⑤:

[0182] Formula⑤

[0183]

[0184] Variable and symbol definition:

[0185] :user In the current period The inlet differential pressure maintenance coefficient, with an ideal value of 1, indicates that the user's inlet differential pressure remains unchanged before and after the valve opening is reduced;

[0186] :user Before the valve opening is reduced, the supply and return water pressure difference at the user inlet, in kPa, is measured from the initial feedback of a pressure transmitter or the user inlet flow regulating device.

[0187] :user After the valve opening is reduced, the supply and return water pressure difference at the same user inlet, in kPa, is obtained from the status feedback of the user inlet flow regulation device.

[0188] : Same as formula ①.

[0189] like If the value is 0.05 (e.g., 0.05), then the inlet differential pressure is considered to have been maintained successfully.

[0190] Furthermore, to assess whether the flow rate change after reducing the valve opening forms a stable record at the user inlet, a flow stability index is defined. The formula is given by formula ⑥, which directly uses formula ⑤. And the rate of change of valve opening:

[0191] Formula⑥

[0192]

[0193] Variable and symbol definition:

[0194] :user In the current period Traffic stability index, with values... The closer to 1, the more stable the flow rate change is after the valve opening decreases, and the lateral transfer is effectively blocked;

[0195] Same as formula ②, the current valve opening before execution;

[0196] :user The new valve opening after the valve opening is reduced, in percentage, is fed back from the user's inlet flow control device.

[0197] The decrease in valve opening from formula ④, in percentage (%).

[0198] : Same as formula ①;

[0199] : Inlet differential pressure maintenance coefficient from formula ⑤;

[0200] : Absolute value symbol, for fractions and Take the absolute value.

[0201] Simple numerical examples: , , Then the molecular part ; , ;product denominator , Stable. If If the differential pressure at the user's inlet remains good, then it is determined that no lateral transfer occurs.

[0202] After processing is completed, the digital management platform will summarize the inlet differential pressure maintenance results of all users into the first inlet differential pressure maintenance data. This data serves as the direct input of S310 and as the prerequisite operating status for subsequent S320 and S330 to determine the operating frequency adjustment of the heat exchange station circulating pump.

[0203] This section summarizes the technical effects: By introducing the inlet differential pressure maintenance coefficient and the flow stability index, the abstract requirement of "no lateral heat transfer" is transformed into a detectable numerical condition, providing a reliable precondition for subsequent system-side recovery. The difference in this formula system lies in coupling the maintenance capability of the self-operated differential pressure control valve with the valve opening change rate to form a closed-loop verification, rather than relying solely on a single differential pressure threshold.

[0204] Step S300 includes at least steps S310-S330:

[0205] S310. Obtain the first inlet differential pressure holding data and the top floor water supply pressure and top floor return water pressure collected by the pressure transmitter, perform the most unfavorable loop differential pressure acquisition processing, and obtain the first most unfavorable loop differential pressure data.

[0206] Specifically, the first inlet differential pressure holding data comes from S230. The first inlet differential pressure holding data includes the user inlet differential pressure status after the current valve opening is reduced, the valve status of the corresponding user inlet flow regulating device, and the holding status of the user inlet flow regulating device.

[0207] The pressure transmitter is installed on the rooftop water supply pipe section and rooftop return pipe section of the most unfavorable loop. The rooftop water supply pressure is the pressure record of the rooftop water supply pipe section in the current time period, and the rooftop return water pressure is the pressure record of the rooftop return water pipe section in the current time period.

[0208] Upon receiving the first inlet differential pressure holding data, the digital management platform does not immediately increase the valve opening for users whose room temperature is below standard. Instead, it first calls the acquisition channel of the pressure transmitter to read the rooftop water supply pressure and rooftop return water pressure according to the current time period, and places both of them in the same operation record along with the first inlet differential pressure holding data. The most unfavorable loop differential pressure acquisition and processing described here involves corresponding reading, differential pressure generation, anomaly screening, and record updating of the rooftop water supply pressure and rooftop return water pressure under the same most unfavorable loop, the same current time period, and the same acquisition batch.

[0209] Furthermore, the digital management platform first determines whether the pressure transmitter is online. If the online status is normal, it receives the top floor water supply pressure and top floor return pressure. If the online status is abnormal, it calls the pressure record already recorded in the previous current period as temporary supplementary data, writes the abnormal status into the operation report, and marks the most unfavorable loop as pending review.

[0210] For multiple pressure records uploaded within the same current time period, the digital management platform aligns them according to their time sequence, retaining the pressure record that is closest to the first inlet differential pressure data, to prevent the old pressure record before the reduction from being used after the overheating user has already reduced the current valve opening.

[0211] Understandably, in a high-rise residential building engineering embodiment, after the near-end overheating user completes the current valve opening reduction, the digital management platform first waits for a preset data collection period before reading the pressure records of the top floor water supply pipe section and the top floor return water pipe section. At this time, the pressure records read are closer to the system state after the inlet differential pressure is maintained.

[0212] If the top floor water supply pressure and the top floor return water pressure remain stable within the same data collection batch, the digital management platform will write the corresponding differential pressure record into the current most unfavorable loop record; if the two change frequently within a short period of time, the set of records will be marked as fluctuation records, and another data collection will be added until a pressure record that can be used for subsequent comparison is obtained.

[0213] After the above-mentioned worst-case loop differential pressure acquisition and processing, the digital management platform summarizes the worst-case loop differential pressure result, pressure transmitter status and acquisition batch identifier corresponding to the current time period into the first worst-case loop differential pressure data, and uses the first worst-case loop differential pressure data as the input of S320. At the same time, this data will also be called again in the subsequent worst-case loop differential pressure verification processing in S430, so as to maintain the same differential pressure recording caliber from S310 to S320 and then to S430.

[0214] S320. Based on the first most unfavorable loop pressure difference data, perform pressure difference safety threshold comparison and heat exchange station circulating pump operation frequency analysis and calculation to obtain the first operation frequency adjustment data.

[0215] Specifically, the first most unfavorable loop differential pressure data comes from S310. The first most unfavorable loop differential pressure data includes the most unfavorable loop differential pressure record for the current time period, the pressure transmitter status, the batch identification, and the time relationship with the first inlet differential pressure holding data.

[0216] The differential pressure safety threshold is a differential pressure range record pre-stored in the digital management platform. The differential pressure range record corresponds to the most unfavorable loop and is associated with the operating status of the circulating pump in the heat exchange station.

[0217] The analysis and calculation of the operating frequency of the circulating pump in the heat exchange station is based on the relationship between the current most unfavorable loop differential pressure record and the differential pressure safety threshold, and generates the operating frequency adjustment content that the frequency converter of the heat exchange station should perform in the next current time period.

[0218] In practice, the digital management platform first reads the current differential pressure record from the differential pressure data of the first most unfavorable loop, and then calls the differential pressure safety threshold for comparison.

[0219] When the current differential pressure record is higher than the upper edge of the differential pressure safety threshold, the digital management platform writes this status into the high differential pressure record and reads the current operating frequency of the heat exchange station circulating pump, the operating frequency change record of the previous current period, and the number of executing users in the first inlet differential pressure maintenance data. Then, it generates an analysis result of reducing the operating frequency. When the current differential pressure record is within the range of the differential pressure safety threshold, the digital management platform retains the current operating frequency status and generates an analysis result of maintaining the operating frequency. When the current differential pressure record is lower than the lower edge of the differential pressure safety threshold, the digital management platform does not directly increase the operating frequency. Instead, it first checks the pressure transmitter status and the first inlet differential pressure maintenance data. If it is confirmed that the overheating user reduction processing has not been fully written, it waits for the next data acquisition batch. If it is confirmed that the writing has been completed, it generates an analysis result of slightly adjusting the operating frequency.

[0220] The analysis and calculation described here do not provide the operating frequency result independently based on the most unfavorable loop pressure difference. Instead, it incorporates the most unfavorable loop pressure difference record, the current operating frequency of the heat exchange station circulating pump, the inlet differential pressure holding status in the first inlet differential pressure holding data, and the operating frequency change record of the previous current period into the same processing link.

[0221] Furthermore, in an engineering operation scenario, if the differential pressure of the most unfavorable loop is higher than the upper edge of the differential pressure safety threshold for three consecutive current time periods, and the near-end overheated user has completed the current valve opening reduction process, the digital management platform will regard this continuous record as a trigger condition for the execution of a reduction in operating frequency and write the proposed reduction in operating frequency into the adjustment record; if only a single current time period is higher than the upper edge of the differential pressure safety threshold, and the pressure transmitter status fluctuates, the digital management platform will first write this record into the pending confirmation record and will not immediately generate a large change in operating frequency.

[0222] After completing the comparison of differential pressure safety thresholds and the analysis and calculation of the operating frequency of the circulating pump in the heat exchange station, the digital management platform summarizes the direction of operating frequency change, the magnitude of operating frequency change, the execution period and the review status corresponding to the current time period into the first operating frequency adjustment data. The first operating frequency adjustment data is used as the input of S330 and continues to maintain the same generation caliber when the first operating frequency control data is retrieved in the subsequent S400.

[0223] S330. Based on the first operating frequency adjustment data, perform operating frequency adjustment of the heat exchange station inverter and operating speed control of the heat exchange station circulating pump to obtain the first operating frequency control data.

[0224] Specifically, the first operating frequency adjustment data comes from S320, and the first operating frequency adjustment data includes at least the direction of operating frequency change, the magnitude of operating frequency change, the execution period, and the review status for the current time period.

[0225] After receiving the first operating frequency adjustment data, the heat exchange station controller first determines whether the execution period has arrived. If the execution period has arrived and the verification status is executable, it sends an operating frequency adjustment command to the heat exchange station inverter. If the execution period has not arrived, it temporarily stores the adjustment command and sends it after the execution period arrives. If the verification status is pending confirmation, it maintains the current operating frequency of the heat exchange station inverter and re-calls the first worst loop differential pressure data output by S310 for the next round of acquisition.

[0226] The frequency adjustment of the inverter in the heat exchange station is achieved by the inverter changing the operating frequency according to the adjustment command sent by the controller of the heat exchange station. The speed control of the circulating pump in the heat exchange station is achieved by the inverter driving the circulating pump to change its operating speed accordingly, thereby changing the hot water flow in the secondary network pipeline.

[0227] Furthermore, after sending the adjustment command, the heat exchange station controller synchronously reads the operating frequency status fed back by the heat exchange station frequency converter and the operating status fed back by the heat exchange station circulating pump, and compares the feedback results with the first operating frequency adjustment data item by item. If the heat exchange station frequency converter has completed the operating frequency change and the operating status of the heat exchange station circulating pump is normal, the control result of the current period is written into the execution record. If the heat exchange station frequency converter has not completed the operating frequency change, or the operating status of the heat exchange station circulating pump is abnormal, the control process is written into the abnormal record, and a new operating frequency adjustment command is restricted from being issued again within the current period.

[0228] Understandably, in an actual heating scenario of a residential building complex, a group of near-end overheated users have already reduced the current valve opening. The most unfavorable loop pressure difference collected from the top-floor water supply and return pipe sections is higher than the upper edge of the pressure difference safety threshold. After the digital management platform generates adjustment data to reduce the operating frequency via S320, the heat exchange station controller sends a down-adjustment command to the heat exchange station frequency converter in the next execution period. The heat exchange station circulating pump then reduces its operating speed, and the total system flow begins to change. At this time, the new operating status will continue to be used by S410 for screening users whose room temperature does not meet the standard and for heat consumption verification.

[0229] After completing the frequency adjustment of the inverter and the speed control of the circulating pump in the heat exchange station, the heat exchange station controller summarizes the command status, feedback status, operating frequency status and operating status of the current period into the first operating frequency control data. The first operating frequency control data is used as the input of S410. At the same time, this data is also read again as the previous control record in the one-key recovery judgment process of S430.

[0230] The key technical advantage of this step is that it integrates the acquisition of the most unfavorable loop differential pressure, comparison of differential pressure safety thresholds, analysis and calculation of operating frequency, and the execution process of the heat exchange station's frequency converter into a single system-side processing link. The first inlet differential pressure maintenance data generated in the previous stage can be directly transmitted along this link to the heat exchange station's circulating pump operating speed control stage. Compared to the method of adjusting the heat exchange station's circulating pump solely based on the most unfavorable loop differential pressure, this step incorporates the system state after the current valve opening of the superheated user is reduced into the operating frequency analysis and calculation process, ensuring that the heat exchange station's frequency converter operating frequency adjustment and the preceding user-side processing are recorded in the same closed-loop record.

[0231] Step S400 includes at least steps S410-S430:

[0232] S410. Obtain the first operating frequency control data and the first user classification data, perform user screening for non-compliant room temperature and heat consumption verification, and obtain the first current valve opening increase instruction.

[0233] Specifically, the first operating frequency control data comes from S330. The first operating frequency control data includes the operating frequency status after the heat exchange station frequency converter has been executed, the operating status of the heat exchange station circulating pump, and the control record corresponding to the current time period. The first user classification data comes from S210. The first user classification data includes classification records of overheated users, standard users, and users whose room temperature does not meet the standard, and retains the heat consumption deviation value, current valve opening, preset valve opening, valve status, and real indoor temperature data of each user.

[0234] When the digital management platform enters this step, it first reads the first operating frequency control data to determine whether the operating speed control of the heat exchange station circulating pump has been written into the execution record. When the execution record has been written, it then calls the first user classification data to filter users whose room temperature does not meet the standard one by one.

[0235] The user screening method described here for non-compliant room temperature is not based solely on actual indoor temperature data. Instead, it involves reviewing the actual indoor temperature data, indoor temperature demand data, heat consumption deviation, current valve opening, and the most unfavorable loop location within the same user record.

[0236] Furthermore, the digital management platform first extracts candidate records of users whose room temperature does not meet the standard from the first user classification data, and then checks whether the user has been included in the overheated user execution record in S220 and S230. If the user is an overheated user in the previous step and has already executed the current valve opening reduction process, this step does not directly generate an increase instruction, but first observes the user's new round of heat consumption changes after the heat exchange station circulating pump running speed control.

[0237] If the user is not among those recorded as overheating users and is still experiencing substandard room temperature, the digital management platform will further perform a heat consumption verification process. This heat consumption verification process involves continuously checking the user's heat consumption, supply and return water temperature difference, and valve status in the current and adjacent time periods to determine whether the state of heat consumption being lower than the standard heating supply persists.

[0238] If heat consumption is lower than the standard heat supply only in a single current period, and the supply and return water temperature difference and valve status do not change synchronously, the digital management platform will write the user into the observation record and will not immediately proceed to the current valve opening adjustment process; if heat consumption is continuously lower than the standard heat supply, and the actual indoor temperature data is continuously lower than the indoor temperature demand data, the user will be written into the adjustment execution record.

[0239] Understandably, in a real-world residential building scenario, after the previous steps of reducing the opening of the current valve and controlling the operating speed of the circulating pump in the heat exchange station, the actual indoor temperature data of some end users is still lower than the indoor temperature demand data. At this time, the digital management platform does not directly treat all end users as targets for adjustment, but first checks whether the heat consumption is consistently lower than the standard heat supply before deciding whether to enter the adjustment execution record.

[0240] After completing the screening of users whose room temperature does not meet the standard and the verification of heat consumption, the digital management platform will summarize the user number, the corresponding current valve opening, the preset valve opening, the direction of adjustment, and the execution period into the first current valve opening adjustment instruction, and record the first current valve opening adjustment instruction as the direct input for S420 call. At the same time, the instruction caliber will continue to be consistent with the heat consumption deviation value verification in the subsequent S430.

[0241] S420. Based on the first current valve opening increase instruction, perform current valve opening increase processing of the user inlet flow regulating device to obtain the second user collected data;

[0242] Specifically, the first current valve opening increase instruction comes from S410. The first current valve opening increase instruction includes the user number entering the increase execution record, the current valve opening, the preset valve opening, the increase period, and the corresponding valve status.

[0243] After receiving the first current valve opening increase instruction, the heat exchange station controller or local monitoring and control terminal sends the instruction to the user inlet flow regulating device at the corresponding user's household pipeline inlet, and executes the current valve opening increase processing according to the adjustment period. The current valve opening increase processing described here still adopts a phased adjustment method, rather than a one-time large-scale increase.

[0244] The reason is that the preceding S230 has already reduced the current valve opening for the overheated user, and the preceding S330 has already adjusted the operating frequency of the frequency converter in the heat exchange station. If the room temperature is directly increased significantly for the user whose room temperature does not meet the standard, the new hot water flow rate change may affect the most unfavorable loop pressure difference record again.

[0245] Specifically, the heat exchange station controller first reads the target range in the first current valve opening increase instruction, and then controls the user inlet flow regulating device to gradually advance from the current valve opening to the target range; after each advance, the heat meter continues to collect flow rate, supply water temperature, return water temperature, supply and return water temperature difference and heat consumption, and the indoor wireless temperature control panel and room temperature collector continue to collect real indoor temperature data and indoor temperature demand data, thereby forming a new round of user records after execution.

[0246] Furthermore, if a user whose room temperature does not meet the standard experiences a valve status abnormality during the current valve opening increase process, or if the current valve opening is close to the upper limit of the preset valve opening but the actual indoor temperature data has not changed, the heat exchange station controller will suspend the user's subsequent increase actions and write the suspension information into the operation report for the S430's one-click recovery judgment call.

[0247] If a user whose room temperature does not meet the standard has undergone an adjustment once, and the heat consumption and supply-return water temperature difference collected by the heat meter have changed synchronously, the digital management platform allows the user to enter the next collection batch, instead of adding new adjustments within the same current time period.

[0248] Understandably, in a practical engineering implementation, if the actual indoor temperature data of the top-floor end user is still lower than expected after the operating frequency of the circulating pump in the heat exchange station is reduced, the digital management platform issues a command to increase the opening of the first current valve to the user. The user's inlet flow rate adjustment device is used to perform a small increase. Subsequently, the heat meter re-records the user's flow rate, supply and return water temperature difference, and heat consumption, forming a new user record after the increase.

[0249] The digital management platform re-merges these newly enlarged user records according to the same user, the same current time period, and the same household pipeline inlet to obtain the second user collection data. The second user collection data is used as the direct input of S430 and continues to be verified against the first most unfavorable loop pressure difference data.

[0250] S430. Based on the second user-collected data and the first most unfavorable loop pressure difference data, perform heat consumption deviation value verification, most unfavorable loop pressure difference verification and one-key recovery determination processing to obtain the first closed-loop verification data.

[0251] Specifically, the second user data is collected from S420. The second user data includes the flow rate, supply water temperature, return water temperature, supply and return water temperature difference, heat consumption, actual indoor temperature data, indoor temperature demand data, current valve opening and valve status after the user whose room temperature does not meet the standard increases the current valve opening. The first most unfavorable loop pressure difference data is collected from S310. The first most unfavorable loop pressure difference data includes the most unfavorable loop pressure difference record corresponding to the previous user's adjustment state.

[0252] In this step, the digital management platform first performs a heat consumption deviation value verification process. The heat consumption deviation value verification process compares the heat consumption in the second user's collected data with the previous standard heating range again to check whether the heat consumption of users whose room temperature does not meet the standard continues to be lower than the standard heating range after the current valve opening is increased, or whether it has returned to the standard heating range.

[0253] Subsequently, the most unfavorable loop differential pressure verification process is performed. This process involves comparing the user records of users whose room temperature does not meet the standard after increasing the current valve opening with the first most unfavorable loop differential pressure data to determine whether this round of adjustment has caused the most unfavorable loop differential pressure to deviate from the recorded range corresponding to the differential pressure safety threshold.

[0254] Furthermore, when the heat consumption deviation verification result shows that the heat consumption of the relevant user is close to the standard heat supply, and the most unfavorable loop pressure difference verification result shows that the most unfavorable loop pressure difference is still within the original recorded range, the digital management platform will write this round of processing into the closed-loop completion record; when the heat consumption deviation verification result shows that the heat consumption of the relevant user continues to be low, or the most unfavorable loop pressure difference verification result shows that the pressure difference record shows continuous abnormal fluctuations, the digital management platform will enter the one-click recovery judgment process.

[0255] The one-click recovery judgment process calls the system's automatically saved balance control strategy, control parameters, and valve opening information, compares the execution link of the current period, and determines whether it is necessary to restore the relevant user inlet flow regulation device and heat exchange station frequency converter to the recorded state of the previous stable period.

[0256] The previous stable period mentioned here refers to the period in the operation report where the heat consumption deviation value verification and the most unfavorable loop pressure difference verification have been completed, and no abnormal records have been found. If the digital management platform determines that the current period meets the one-click recovery conditions, it will generate a recovery call record; if it does not meet the conditions, it will retain the verification results of the current period as the input preceding record for the next round of data cleaning and alignment processing.

[0257] Understandably, in an engineering implementation of a residential building complex, if a user increases the current valve opening and the heat consumption rebounds, but the most unfavorable loop pressure difference fluctuates significantly in two consecutive data collection batches, the digital management platform will read the valve opening information and operating frequency record saved in the previous stable period to determine whether it is necessary to restore the control state of the previous stable period. If it is not necessary to restore, the current fluctuation record will be sent to the next round of data collection and alignment link.

[0258] After completing the verification of heat consumption deviation, the verification of the most unfavorable loop pressure difference, and the one-click recovery judgment, the digital management platform summarizes the verification results, recovery call records, and closed-loop status into the first closed-loop verification data. The first closed-loop verification data is called again as the pre-record for the next round of data cleaning and alignment processing, and together with the heat meter data collected by S110, the indoor wireless temperature control panel data, and the room temperature collector data, it constitutes the continuous operation link for the current period.

[0259] The key technical benefit of this step is that it integrates the user records of those whose room temperature is below standard (after increasing the valve opening) with the previous record of the most unfavorable loop pressure difference into the same verification chain. The verification of heat consumption deviation and the verification of the most unfavorable loop pressure difference use the same real-time data collected after the same round of execution. Compared to a method that only separately verifies user-side temperature changes, this step adds a one-click recovery judgment process. When new deviation records appear in the previous round of user-side adjustment and system-side operating frequency control, it can recall the saved balance control strategy, control parameters, and valve opening information to return to the recorded state of the previous stable period.

[0260] Example 2: Figure 2 This diagram illustrates a structural block diagram of a centralized heating secondary network control and energy-saving method based on individual household heat feedback, according to an embodiment of the present invention. Figure 2 As shown, the structure may include:

[0261] The user-side data acquisition module 01 is used to collect flow rate, supply water temperature, return water temperature, supply and return water temperature difference, and heat consumption through a heat meter, and to collect real indoor temperature data and indoor temperature demand data through an indoor wireless temperature control panel and a room temperature collector. Specifically, the user-side data acquisition module is deployed at two locations: the user's household pipe inlet and the user's indoor space. The heat meter receives information about hot water flow at the household pipe inlet, generating flow rate records, supply water temperature records, return water temperature records, supply and return water temperature difference records, and heat consumption records. The indoor wireless temperature control panel and room temperature collector receive indoor temperature information, generating real indoor temperature data and indoor temperature demand data. The user-side data acquisition module triggers data collection during the current time period. If there are incomplete upload records from the previous current time period, they are first written to the buffer, and then merged with the current time period according to the user number. The user-side acquisition module initially marks missing, duplicate, and jump records, and sends the original records and marked records together to the data cleaning and alignment module. The original records are used as input objects for flow rate, supply water temperature, return water temperature, supply and return water temperature difference, heat consumption, indoor temperature real data, and indoor temperature demand data. The marked records are retained in the local storage area as supplementary records of the same batch of acquisition status for subsequent retrieval and traceability.

[0262] The data cleaning and alignment module 02 is used to clean and align the flow rate, supply water temperature, return water temperature, supply and return water temperature difference, heat consumption, actual indoor temperature data, and indoor temperature demand data to obtain the first user's collected data. Specifically, the data cleaning and alignment module receives various collection records from the user-side collection module and establishes a corresponding relationship according to user number, current time period, and collection batch. The data cleaning and alignment module first performs an integrity check on the flow rate, supply water temperature, return water temperature, supply and return water temperature difference, and heat consumption, and then performs a consistency check on the actual indoor temperature data and indoor temperature demand data. When there are missing records, the data cleaning and alignment module calls the corresponding record from the previous current time period to mark it as a supplementary record; when there are duplicate records, the data cleaning and alignment module retains the record with the later collection time and writes the remaining records into the operation report; when there are jump records, the data cleaning and alignment module first retains the jump position and then waits for the next batch of records from the same user to enter. After cleaning, the data cleaning and alignment module places the same user's flow rate, supply water temperature, return water temperature, supply and return water temperature difference, heat consumption, actual indoor temperature data, and indoor temperature demand data into the same user record, generating the first user's collected data. This first user's collected data is transmitted to the standard heat supply and deviation value generation module as direct input, and simultaneously stored in the buffer within the data cleaning and alignment module for use by the closed-loop verification and recovery judgment module after data refresh.

[0263] The standard heating capacity and deviation value generation module 03 is used to perform historical heating data analysis, outdoor ambient temperature analysis, and supply and return water temperature difference analysis and calculation based on the first user collected data to obtain the first standard heating capacity data. It then performs heat consumption deviation value calculation based on the first user collected data and the first standard heating capacity data to obtain the first heat consumption deviation value sequence. Specifically, the standard heating capacity and deviation value generation module receives the first user collected data from the data cleaning and alignment module, reads historical heating data information of the same user from the historical storage area, and reads the outdoor ambient temperature from the outdoor acquisition interface. The module first categorizes the supply and return water temperature difference and indoor temperature demand data in the first user collected data, then extracts records of the same type corresponding to the current time period from the historical heating data information to form the basis for calculating the standard heating capacity of the current user, and then outputs the first standard heating capacity data. Next, the module calls the heat consumption data from the first user collected data, compares it one by one with the corresponding records in the first standard heating capacity data, forms heat consumption deviation value records, and organizes them into the first heat consumption deviation value sequence according to the user's order in the secondary network pipeline. When historical heating data is insufficient, the standard heating output and deviation value generation module marks the user as pending data entry and calls records from adjacent time periods to participate in this round of processing. The first heat consumption deviation value sequence is passed to the user classification and opening reduction control module as an input field name. The first standard heating output data is stored within the standard heating output and deviation value generation module for subsequent heat consumption review and heat consumption deviation value verification.

[0264] The user classification and opening reduction control module 04 is used to acquire the first heat consumption deviation value sequence, perform user inlet flow regulation device opening and parameter matching processing for unfavorable loops to obtain first user classification data, and perform overheat user screening and preset valve opening matching processing based on the first user classification data to obtain a first current valve opening reduction command. It is also used to control the user inlet flow regulation device to execute current valve opening reduction processing based on the first current valve opening reduction command, and control the user inlet flow regulation device to execute inlet differential pressure maintenance processing to obtain first inlet differential pressure maintenance data. Specifically, the user classification and opening reduction control module receives the first heat consumption deviation value sequence from the standard heat supply and deviation value generation module, and reads the user inlet flow regulation device opening and parameters corresponding to the user number. The user classification and opening reduction control module first determines whether each user is in an unfavorable loop, and then puts the unfavorable loop position, heat consumption deviation value, current valve opening, preset valve opening, and valve status into the same determination link to form the first user classification data. After classification, the user classification and valve opening reduction control module filters overheated users and matches the preset valve opening to the filtered users, forming a first current valve opening reduction command. This first current valve opening reduction command is sent to the user inlet flow regulating device's execution component. The user inlet flow regulating device completes the current valve opening reduction process according to the target opening range for the corresponding user. Simultaneously, the user inlet flow regulating device receives inlet differential pressure maintenance control content and maintains the corresponding user's inlet differential pressure state. The user classification and valve opening reduction control module receives execution feedback and generates first inlet differential pressure maintenance data. If there is a valve status abnormality or feedback interruption during execution, the user classification and valve opening reduction control module suspends the user's subsequent opening actions and sends the abnormality record to the operation report. The first user classification data is transmitted to the user room temperature non-compliant adjustment control module for invocation, and the first inlet differential pressure maintenance data is transmitted to the most unfavorable loop differential pressure acquisition and operating frequency control module for invocation. The first current valve opening reduction command is stored in the internal storage area of ​​this module for traceability by the closed-loop verification and recovery judgment module.

[0265] The most unfavorable loop differential pressure acquisition and operating frequency control module 05 is used to acquire the first inlet differential pressure maintenance data and the rooftop water supply pressure and rooftop return water pressure acquired by the pressure transmitter, perform most unfavorable loop differential pressure acquisition processing to obtain the first most unfavorable loop differential pressure data, and perform differential pressure safety threshold comparison and heat exchange station circulating pump operating frequency analysis and calculation processing based on the first most unfavorable loop differential pressure data to obtain the first operating frequency adjustment data. It is also used to control the heat exchange station frequency converter to perform operating frequency adjustment processing based on the first operating frequency adjustment data, and control the heat exchange station circulating pump to perform operating speed control processing to obtain the first operating frequency control data. Specifically, the most unfavorable loop differential pressure acquisition and operating frequency control module receives the first inlet differential pressure maintenance data from the user classification and opening reduction control module, and receives the rooftop water supply pressure and rooftop return water pressure from the pressure transmitter. The most unfavorable loop differential pressure acquisition and operating frequency control module first aligns the rooftop water supply pressure and rooftop return pressure according to the current time period, then combines the first inlet differential pressure maintenance data to form the most unfavorable loop differential pressure record and outputs the first most unfavorable loop differential pressure data. Subsequently, the most unfavorable loop differential pressure acquisition and operating frequency control module reads the differential pressure safety threshold, compares it with the first most unfavorable loop differential pressure data, and combines it with the current operating status of the heat exchange station circulating pump to form the first operating frequency adjustment data. The first operating frequency adjustment data is sent to the heat exchange station frequency converter, which completes the operating frequency adjustment according to the received adjustment data, and the heat exchange station circulating pump then performs operating speed control processing. The most unfavorable loop differential pressure acquisition and operating frequency control module receives execution feedback from the heat exchange station frequency converter and the heat exchange station circulating pump, and generates the first operating frequency control data. When the pressure transmitter acquisition is interrupted, the differential pressure record fluctuates abnormally, or the heat exchange station frequency converter fails to complete the adjustment, the most unfavorable loop differential pressure acquisition and operating frequency control module first retains the operating status of the current time period, and then writes the status into the abnormal record area. The first operating frequency control data is transmitted to the user adjustment control module for users whose room temperature does not meet the standard. The first most unfavorable loop pressure difference data is transmitted to the closed-loop verification and recovery judgment module for use. The first operating frequency adjustment data is retained in this module for use in the next current period's operating frequency analysis and calculation.

[0266] The room temperature non-compliant user adjustment control module 06 is used to acquire the first operating frequency control data and the first user classification data, perform screening of users with non-compliant room temperature and heat consumption verification processing, obtain the first current valve opening adjustment command, and control the user inlet flow regulating device to perform current valve opening adjustment processing based on the first current valve opening adjustment command to obtain the second user collected data; specifically, the room temperature non-compliant user adjustment control module receives the first operating frequency control data from the most unfavorable loop pressure difference acquisition and operating frequency control module, and receives the first user classification data from the user classification and opening reduction control module. The room temperature non-compliant user adjustment control module first checks the control status of the heat exchange station frequency converter and the heat exchange station circulating pump, then extracts the room temperature non-compliant user records from the first user classification data, and performs room temperature non-compliant user screening and heat consumption verification processing. The heat consumption verification processing calls historical heating data information, the first standard heating data, and the current time period record to continuously check the heat consumption, supply and return water temperature difference, and valve status of relevant users, and then generates the first current valve opening adjustment command. The first current valve opening increase command is sent to the corresponding user's inlet flow regulating device execution component. The user inlet flow regulating device completes the current valve opening increase processing according to the target opening range of the corresponding user. After the increase processing is completed, the heat meter, indoor wireless temperature control panel, and room temperature collector re-enter the current time period for data collection, and the relevant records are merged into the second user's collected data. If there are records of no feedback after the increase, abnormal valve status, or no change in heat consumption, the room temperature non-compliant user increase control module stops the user's subsequent increase actions and sends the stop record to the operation report. The second user's collected data is transmitted to the closed-loop verification and recovery judgment module for invocation. The first current valve opening increase command is retained within this module for subsequent traceability and recovery judgment invocation.

[0267] The closed-loop verification and recovery judgment module 07 is used to perform heat consumption deviation value verification, most unfavorable loop pressure difference verification, and one-click recovery judgment processing based on the second user collected data and the first most unfavorable loop pressure difference data to obtain first closed-loop verification data. This first closed-loop verification data is then updated to the data cleaning and alignment module and the standard heating capacity and deviation value generation module. Specifically, the closed-loop verification and recovery judgment module receives second user collected data from the user adjustment control module for substandard room temperature and receives first most unfavorable loop pressure difference data from the most unfavorable loop pressure difference acquisition and operating frequency control module. The closed-loop verification and recovery judgment module first verifies the heat consumption deviation value in the second user collected data, then verifies the most unfavorable loop pressure difference in the first most unfavorable loop pressure difference data, and subsequently puts the two types of verification records into the same closed-loop record link. During the verification process, the closed-loop verification and recovery judgment module calls the system's automatically saved balance control strategy, control parameters, and valve opening information to check the execution record of the current period against the execution record of the previous stable period item by item. When the verification result meets the recovery conditions, the closed-loop verification and recovery judgment module performs one-click recovery judgment processing and generates a corresponding recovery record. When the verification result does not meet the recovery conditions, the closed-loop verification and recovery judgment module retains the current verification record and enters the next round of data refresh. After completing the above processing, the closed-loop verification and recovery judgment module generates the first closed-loop verification data and sends it back to the data cleaning and alignment module as a pre-record call for subsequent data cleaning and alignment processing. At the same time, it sends it back to the standard heating capacity and deviation value generation module as a pre-record call for subsequent historical heating data information updates and heat consumption deviation value calculation processing. This forms a continuous data and control closed loop starting from the user-side acquisition module, passing through the data cleaning and alignment module, the standard heating capacity and deviation value generation module, the user classification and opening degree reduction control module, the most unfavorable loop differential pressure acquisition and operating frequency control module, the room temperature non-compliant user adjustment control module, and then returning to the data cleaning and alignment module and the standard heating capacity and deviation value generation module.

Claims

1. A method for energy-saving control of a centralized heating secondary network based on individual household heat feedback, characterized in that, include: S100. Acquire multi-source data, perform data cleaning and alignment processing, standard heating analysis and calculation processing, and heat consumption deviation value calculation processing to obtain the first heat consumption deviation value sequence. The multi-source data includes flow rate, supply water temperature, return water temperature, supply and return water temperature difference and heat consumption collected by the heat meter, as well as real indoor temperature data and indoor temperature demand data collected by the indoor wireless temperature control panel and room temperature collector. S200. Based on the first heat consumption deviation value sequence, perform overheated user screening and preset valve opening matching processing, and execute a combination of reducing the current valve opening of the user inlet flow regulating device and maintaining the inlet differential pressure of the user inlet flow regulating device at the user inlet to generate the first inlet differential pressure maintenance data. S300: Based on the first inlet differential pressure holding data, perform the most unfavorable loop differential pressure acquisition processing, differential pressure safety threshold comparison and heat exchange station circulating pump operation frequency analysis and calculation processing, and then perform heat exchange station inverter operation frequency adjustment and circulating pump operation speed control processing to generate the first operation frequency control data. S400: Based on the first operating frequency control data, perform user screening for non-compliant room temperature, increase the current valve opening of the user inlet flow regulating device, and perform closed-loop verification processing to generate the first closed-loop verification data.

2. The method according to claim 1, characterized in that, The data cleaning and alignment process includes: The data uploaded by the heat meter, indoor wireless temperature control panel and room temperature collector are filtered for duplicate uploads, intermittent data are supplemented and data jumps are screened. Then, the flow rate, supply water temperature, return water temperature, supply and return water temperature difference, heat consumption, indoor temperature real data and indoor temperature demand data are put into the same user record for the same user and the same current time period to generate the first user data collection.

3. The method according to claim 2, characterized in that, The process of standard heating supply analysis and calculation, and heating consumption deviation calculation includes: The indoor temperature demand data, supply and return water temperature difference and heat consumption in the first user collected data are analyzed and calculated together with historical heating data and outdoor ambient temperature to generate the first standard heating data. When the historical heating data of the same user is insufficient, the historical heating data of other users in the same unfavorable loop is called to supplement it, and the standard heating of the current user is corrected by combining the outdoor ambient temperature and the temperature difference between the supply and return water at the current time. The heat consumption deviation value calculation process includes: reading the heat consumption in the first user's collected data and the standard heat supply in the first standard heat supply data for each user, comparing them one by one according to the same user and the same current time period to obtain the heat consumption deviation value, and synchronously writing the actual data of the supply and return water temperature difference, valve opening degree and indoor temperature corresponding to the user into the deviation record, and summarizing the deviation records of all users to generate the first heat consumption deviation value sequence.

4. The method according to claim 3, characterized in that, The process of overheating user screening and preset valve opening matching includes: Users whose heat consumption is consistently higher than the standard heat supply, whose current valve opening is higher than the preset valve opening, and who do not belong to the most unfavorable loop are extracted from the first heat consumption deviation value sequence and recorded as overheated users. For each user in the overheated user execution record, read their preset valve opening and current valve opening, determine the target opening range after reducing the current valve opening, and generate a first current valve opening reduction command.

5. The method according to claim 4, characterized in that, The process of the user inlet executing the combined action of reducing the current valve opening of the user inlet flow regulator and maintaining the inlet differential pressure of the user inlet flow regulator includes: The combined action includes: after receiving the first current valve opening reduction instruction, the heat exchange station controller or local measurement and control terminal sends the instruction to the user inlet flow regulating device at the corresponding user's household pipeline inlet, and the user inlet flow regulating device gradually completes the current valve opening reduction process according to the target opening range; While the user inlet flow regulating device performs the current valve opening reduction process, the user inlet flow regulating device installed at the same user's household pipeline inlet performs inlet differential pressure maintenance process. This process maintains the pressure difference between the water supply side and the return side at the user inlet, so that the flow change after the current valve opening is reduced forms a stable record at the user inlet. The current valve opening, valve status, supply and return water temperature difference, and inlet differential pressure status of the same user before and after execution are rewritten into the execution record. The inlet differential pressure maintenance results of all executing users are summarized to generate the first inlet differential pressure maintenance data. The first inlet differential pressure holding data includes the user inlet differential pressure status after the current valve opening is reduced, the valve status of the corresponding user inlet flow regulating device, and the holding status of the user inlet flow regulating device.

6. The method according to claim 5, characterized in that, The process of acquiring and processing the most unfavorable loop differential pressure includes: After receiving the first inlet differential pressure holding data, the pressure transmitters set in the top floor water supply pipe section and the top floor return pipe section of the most unfavorable loop are invoked to read the top floor water supply pressure and the top floor return pressure according to the current time period, perform differential pressure generation, anomaly screening and record updating, and generate the first most unfavorable loop differential pressure data. The first most unfavorable loop differential pressure data includes the most unfavorable loop differential pressure record for the current time period, the pressure transmitter status, the batch identification, and the time relationship with the first inlet differential pressure holding data.

7. The method according to claim 6, characterized in that, The process of comparing differential pressure safety thresholds and analyzing and calculating the operating frequency of circulating pumps in heat exchange stations includes: Read the current differential pressure record in the first most unfavorable loop differential pressure data and compare it with the pre-stored differential pressure safety threshold; when the current differential pressure record is higher than the upper edge of the differential pressure safety threshold, read the current operating frequency of the heat exchange station circulating pump, the operating frequency change record of the previous current period, and the number of executing users in the first inlet differential pressure maintenance data, generate the analysis result of reducing the operating frequency, and write the result into the adjustment record; When the current differential pressure record is within the differential pressure safety threshold range, an analysis result is generated to maintain the operating frequency. When the current differential pressure record is below the lower edge of the differential pressure safety threshold, first check the pressure transmitter status and the first inlet differential pressure holding data. If it is confirmed that the overheating user reduction processing has not been fully written, wait for the next batch of data acquisition. If it is confirmed that the writing has been completed, generate the analysis result of slightly adjusting the operating frequency. The first operating frequency adjustment data is generated by summarizing the direction of operating frequency change, the magnitude of operating frequency change, the execution period and the review status corresponding to the current time period. The differential pressure safety threshold is not simply a protection threshold, but a boundary for determining whether the user-side throttling benefits can be taken over by the system side. The differential pressure comparison is triggered by preceding user-side actions rather than by independent system operation requirements.

8. The method according to claim 7, characterized in that, The process of regulating the operating frequency of the frequency converter and controlling the operating speed of the circulating pump in the heat exchange station includes: The heat exchange station controller receives the first operating frequency adjustment data, determines whether the execution period has arrived and whether the verification status is executable. If so, it sends an operating frequency adjustment command to the heat exchange station frequency converter. The frequency converter of the heat exchange station changes the operating frequency according to the adjustment command, which drives the circulating pump of the heat exchange station to change the operating speed accordingly, thereby changing the hot water flow in the secondary network pipeline. The command status, feedback status, operating frequency status, and operating status of the current time period are summarized to generate the first operating frequency control data.

9. The method according to claim 8, characterized in that, The process for screening and handling users whose room temperature does not meet the standard includes: Read the first operating frequency control data and determine whether the operating speed control of the heat exchange station circulating pump has been written into the execution record; The first user classification data is called up, and users whose room temperature does not meet the standard are filtered one by one. The filtering process puts the actual indoor temperature data, indoor temperature demand data, heat consumption deviation value, current valve opening degree and the most unfavorable loop position into the same user record for verification. Extract candidate records of users whose room temperature does not meet the standard, and check whether the user has been included in the overheating user execution record in the previous steps. If the user is not in the overheating user execution record and is still in the state of room temperature not meeting the standard, proceed to heat consumption review. The heat consumption verification process includes: continuously verifying the user's heat consumption, supply and return water temperature difference, and valve status in the current and adjacent time periods. If the heat consumption is continuously lower than the standard heat supply and the actual indoor temperature data is continuously lower than the indoor temperature demand data, the user is written into the adjustment execution record, and a first current valve opening adjustment instruction is generated.

10. The method according to claim 9, characterized in that, The process of adjusting the current valve opening and performing closed-loop verification on the user inlet flow regulating device includes: The current valve opening adjustment process of the user inlet flow regulating device includes: The heat exchange station controller or local monitoring and control terminal receives the first current valve opening increase instruction and sends it to the user inlet flow regulating device at the corresponding user's household pipeline inlet, and performs the current valve opening increase processing according to the increase period; The adjustment process is carried out in stages. After each adjustment, the heat meter continues to collect flow rate, supply water temperature, return water temperature, supply and return water temperature difference and heat consumption. The indoor wireless temperature control panel and room temperature collector continue to collect real indoor temperature data to form a new user record after the adjustment. The data of the second user is re-merged according to the same user, the same current time period and the same household pipe inlet. The closed-loop verification process includes: heat consumption deviation value verification process: compare the heat consumption in the second user's collected data with the previous standard heating caliber again, and check whether the heat consumption of the user whose room temperature does not meet the standard is still lower than the standard heating or has returned to the standard heating range after the current valve opening is increased. Most unfavorable loop pressure difference verification process: The second user-collected data is compared with the first most unfavorable loop pressure difference data to determine whether the current adjustment action has caused the most unfavorable loop pressure difference to deviate from the recording range corresponding to the pressure difference safety threshold again; One-click recovery judgment and processing: When the heat consumption deviation value verification result shows that the heat consumption is still low, or the most unfavorable loop pressure difference verification result shows that the pressure difference record has continuous abnormal fluctuations, the system automatically saves the balance control strategy, control parameters and valve opening information, compares them with the execution link of the current period, and determines whether it is necessary to restore the relevant user inlet flow regulation device and heat exchange station frequency converter to the recorded state of the previous stable period. The verification results, recovery call records, and closed-loop status are summarized to generate the first closed-loop verification data, which serves as the preliminary record for the next round of data cleaning and alignment processing.

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