CN115468215A - Heating power pipe network equipment regulation and control initialization method and device based on historical operation data - Google Patents
Heating power pipe network equipment regulation and control initialization method and device based on historical operation data Download PDFInfo
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Abstract
The invention provides a heating power pipe network equipment regulation and initialization method based on historical operation data, which comprises the following steps: acquiring historical operation data of a thermal pipe network system to be initialized, outdoor climate data at the current moment and system return water temperature; obtaining a system constant pressure difference point, a system total flow, each heat exchange station flow and each heat exchange station resource pressure difference according to historical operating data of the system in a steady state; inputting the total system flow and outdoor climate data into a pre-constructed system heat load model, outputting heat demand and system supply and return water temperature difference, and obtaining system supply water temperature according to the system return water temperature and the system supply and return water temperature difference; inputting a system constant pressure difference point and a system total flow into a pre-constructed heat source water pump model, and outputting heat source water pump frequency; and inputting the flow and the qualification pressure difference of each heat exchange station into a corresponding pre-constructed heat exchange station regulation and control equipment model, and outputting the regulation and control information of each heat exchange station. The initialization state setting of the heating power pipe network equipment can be completed quickly and accurately.
Description
Technical Field
The invention relates to the technical field of heating power pipe network regulation and control, in particular to a method and a device for initializing the regulation and control of heating power pipe network equipment based on historical operation data.
Background
With the acceleration of the urbanization process of China and the continuous improvement of the living standard of people, the urban centralized heating industry of China is greatly developed. However, the urban centralized heat supply pipe network system is a very complex multivariable control system, has the characteristics of large heat supply area, multiple influence factors, strong internal relevance, long lag time, serious nonlinearity and the like, is more and more difficult to operate and adjust, and is of great importance in selecting an effective adjusting scheme.
After the urban heat supply pipe network system completes the heat supply task in the heating season, the pressure of the pipe network is usually released and the water is drained for safety, finally, all pipeline valves of a heat source and a heat exchange station in the pipe network system are in a fully-opened or fully-closed state, and a water pump is in an off-state.
When heating begins in the next year and the heating pipe network system is restarted, a heat user generally resets the control equipment according to the original experience, and then rebuilds to find a proper opening degree to complete the initialization of the heating system, so that the hydraulic balance is ensured. This is because the current heat supply environment is different from the previous heat supply environment, and the original experience cannot adapt to the current heat supply environment, that is, the original heat source end cannot adapt to the current heat supply demand.
At present, the initialization adjustment of a heat supply pipe network system is completed through artificial experience, and when the operation environments in front and back heating seasons have large differences, the initialization adjustment of the heat supply pipe network system can cause the following regulation and control problems:
1. because the heat load requirement is not clear and the temperature target of the supply water and the return water is unknown, the heat supply target and the heat load distribution of the heat source are both in a searching stage; in the initial stage of heat supply, the heat source needs to be slowly started to supply heat, and the parameters of the heat medium cannot reach higher temperature immediately, namely in the initial stage of heat supply, the heat source is not sufficiently prepared.
2. Because the manual regulation cannot achieve the overall regulation strategy of the system, and the specific equipment initialization value of each hot user is quantized, feedback regulation is usually required by means of the indoor temperature of the user, and feedback running-in for 1 month is usually required. During the period, the water power of the heating system vibrates seriously, and the heating quality can not be guaranteed.
Therefore, most heating power companies initialize and set equipment under the condition that the system regulation and control target is not clear, time and labor are wasted, the total heat supply cannot be accurately estimated, the mutual influence between heat exchange stations and between heat users due to the equipment regulation and control cannot be realized, and the heat supply quality cannot be stably guaranteed.
Disclosure of Invention
Technical problem to be solved
In view of the problems in the art described above, the present invention is at least partially addressed. Therefore, one object of the present invention is to provide a method for initializing regulation and control of a heat distribution network device based on historical operating data, which can complete the initialization state setting of the heat distribution network device quickly and accurately after the completion of water injection in a heat supply system.
The second purpose of the invention is to provide a heating power pipe network equipment regulation and initialization device based on historical operation data.
(II) technical scheme
In order to achieve the above object, the present invention provides a method for initializing regulation and control of a thermal pipe network device based on historical operating data, comprising:
acquiring historical operation data of a thermal pipe network system to be initialized, outdoor climate data at the current moment and system return water temperature; obtaining an initialized system constant pressure difference point, a system total flow, each heat exchange station flow and each heat exchange station resource pressure difference according to historical operating data of the system in a steady state;
inputting the total system flow and outdoor climate data into a pre-constructed system heat load model, outputting heat demand and system supply and return water temperature difference, and obtaining system supply water temperature according to the system return water temperature and the system supply and return water temperature difference; inputting a system constant pressure difference point and a system total flow into a pre-constructed heat source water pump model, and outputting heat source water pump frequency; inputting the flow and the qualification pressure difference of each heat exchange station into a corresponding pre-constructed heat exchange station regulation and control equipment model, and outputting the regulation and control information of each heat exchange station;
and (4) regulating and controlling the initialization of the heating power pipe network equipment according to the system water supply temperature, the heat source water pump frequency and the regulation and control information of each heat exchange station.
Optionally, inputting the flow and the qualification pressure difference of each heat exchange station into a corresponding pre-constructed heat exchange station valve model, and outputting the valve opening of each heat exchange station; regulating and controlling the initialization of heating power pipe network equipment according to the system water supply temperature, the frequency of a heat source water pump and the opening degree of a valve of each heat exchange station;
or inputting the flow and the qualification pressure difference of each heat exchange station into a corresponding pre-constructed secondary pump model of the heat exchange station, and outputting the operating frequency of the secondary pump of each heat exchange station; and regulating and controlling the initialization of the heating power pipe network equipment according to the system water supply temperature, the frequency of the heat source water pump and the operating frequency of the secondary pump of each heat exchange station.
Optionally, the outdoor climate data comprises outdoor temperature, outdoor wind speed and outdoor humidity.
Optionally, the steady state is a state corresponding to a longest period of time during which the system flow value and the pressure values of the water supply and return main pipes are kept constant in the operation process of the heat pipe network system:
the system constant flow conditions are as follows: the flow value data of the main pipe of the continuous system for more than 4 weeks meets G e [ G ∈ 0 ×0.85，G 0 ×1.15]Wherein G is the flow value of the system main pipe, G 0 The flow of the system main pipe is taken as a change reference value;
the system constant pressure conditions are as follows: the pressure difference value of the water supply and return main pipes of the system for more than 4 continuous weeks meets the requirement that delta P belongs to [ delta P0-0.05 and delta P0+0.05], wherein the delta P is the pressure difference value of the water supply and return main pipes of the system, and the delta P0 is the change reference value of the pressure difference value of the water supply and return main pipes of the system.
Optionally, obtaining an initialized system constant pressure difference point, a system total flow, flows of the heat exchange stations and a resource pressure difference of the heat exchange stations according to historical operating data of the system in a steady state, including: obtaining a change reference value of the pressure difference value of a water supply main pipe and a water return main pipe of the system and a change reference value of the flow of the main pipe of the system according to historical operation data of the system in a steady state, taking the change reference value of the pressure difference value of the water supply main pipe and the water return main pipe of the system as an initialized system constant pressure difference point, and taking the change reference value of the flow of the main pipe of the system as a total flow of the system; or, carrying out weighted average on historical operation data of the system in a steady state, and acquiring an initialized system constant pressure difference point and a system total flow according to the operation data after weighted average;
acquiring a resource pressure difference data set of each heat exchange station under a constant pressure difference point of the system and a flow data set of each heat exchange station under the total flow of the system according to historical operating data of the system under a steady state; and averaging the qualification pressure difference data sets of each heat exchange station to obtain initialized qualification pressure difference of each heat exchange station, and averaging the flow data sets of each heat exchange station to obtain initialized flow of each heat exchange station.
Optionally, according to historical operation data of the system in a steady state, determining a difference value between a water supply main pipe pressure value and a water return main pipe pressure value of the thermal power pipe network system as a system constant pressure difference point, and determining a main pipe flow value of the thermal power pipe network system as a system total flow.
The invention also provides a thermal pipe network equipment regulation and initialization device based on historical operating data, which comprises:
the data acquisition module is used for acquiring historical operation data of the thermal pipe network system to be initialized, outdoor climate data at the current moment and system return water temperature;
the data mining module is used for acquiring initialized system constant pressure difference points, system total flow, flow of each heat exchange station and resource pressure difference of each heat exchange station according to historical operating data of the system in a steady state;
the system comprises an initialization module, a heat load model, a heat demand model and a system water supply and return temperature difference model, wherein the initialization module is used for inputting the total system flow and outdoor climate data into a system heat load model which is constructed in advance, outputting the heat demand and the system water supply and return temperature difference, and obtaining the system water supply temperature according to the system water return temperature and the system water supply and return temperature difference; inputting a system constant pressure difference point and a system total flow into a pre-constructed heat source water pump model, and outputting heat source water pump frequency; inputting the flow and the qualification pressure difference of each heat exchange station into a corresponding pre-constructed heat exchange station regulation and control equipment model, and outputting the regulation and control information of each heat exchange station; and (4) regulating and controlling the initialization of the heating power pipe network equipment according to the system water supply temperature, the heat source water pump frequency and the regulation and control information of each heat exchange station.
Optionally, the device for regulating and initializing a heat distribution network equipment based on historical operating data further includes: the data preprocessing module is used for preprocessing historical operating data;
and the data mining module is used for acquiring initialized system constant pressure difference points, system total flow, flow of each heat exchange station and resource pressure difference of each heat exchange station according to the preprocessed historical operating data of the system in a stable state.
Optionally, the data mining module is configured to obtain a change reference value of a pressure difference value of the water supply main pipe and the water return main pipe of the system and a change reference value of a flow rate of the system main pipe according to historical operation data of the system in a steady state, use the change reference value of the pressure difference value of the water supply main pipe and the change reference value of the flow rate of the water return main pipe of the system as an initialized system constant pressure difference point, and use the change reference value of the flow rate of the system main pipe as a total flow rate of the system; acquiring a resource pressure difference data set of each heat exchange station at a constant pressure difference point of the system and a flow data set of each heat exchange station at the total flow of the system according to historical operating data of the system at a steady state; and averaging the qualification pressure difference data sets of each heat exchange station to obtain initialized qualification pressure difference of each heat exchange station, and averaging the flow data sets of each heat exchange station to obtain initialized flow of each heat exchange station.
(III) advantageous effects
The invention has the beneficial effects that:
the invention provides a heat pipe network equipment regulation and initialization method based on historical operation data, which obtains the total heat load of a system according to the historical operation data of a heat pipe network system under a steady state and the current outdoor climate data, provides a total target requirement for the system, provides a target requirement for the supply capacity of each equipment in the system according to the historical operation data of the heat pipe network system under the steady state and the condition of each equipment in the heat pipe network system, and specifically reflects the regulation and control information of the water supply temperature, the heat source water pump frequency and each heat exchange station of the system. The initialization state of the heating power pipe network equipment is further set according to the obtained system water supply temperature, the heat source water pump frequency and the regulation and control information of each heat exchange station, so that the initialization process is quick and effective, the heat source preparation and the heat supply quality at the initial stage of heat supply are ensured, the operation regulation and control risk is reduced, a favorable basis is provided for converting the passive regulation mode of the traditional urban heating pipe network system into the active regulation mode, the hydraulic working condition stability of the system is improved, and the operation efficiency is improved.
Drawings
The invention is described with the aid of the following figures:
fig. 1 is a schematic flow chart of a method for initializing regulation and control of a thermal pipe network device based on historical operating data according to an embodiment of the present invention;
FIG. 2 is a piping diagram of a thermal piping system to be initialized, according to an embodiment of the present invention;
FIG. 3 is a pipe network topology diagram of a thermal pipe network system to be initialized according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a thermal pipe network equipment regulation and initialization device based on historical operating data according to an embodiment of the present invention.
[ instruction of reference ]
1: a data acquisition module;
2: a data mining module;
3: initializing a module;
4: and a data preprocessing module.
Detailed Description
For the purpose of better explaining the present invention and to facilitate understanding, the present invention will be described in detail by way of specific embodiments with reference to the accompanying drawings.
In order to facilitate the regulation and control of the operation process of the heat pipe network system, a heat load model for acquiring the heat demand and the temperature difference between the supply water and the return water of the system, a heat source water pump model for acquiring the operation frequency of a heat source water pump and a heat exchange station valve model for acquiring the opening of a heat exchange station valve exist. The method utilizes the existing heat load model, heat source water pump model and heat exchange station valve model to effectively analyze historical operating data based on the heat pipe network system, excavates a system constant pressure difference point, a system total flow, flows of each heat exchange station and a resource differential pressure of each heat exchange station according to the historical operating data of the system in a steady state, inputs the excavated system constant pressure difference point, system total flow, flows of each heat exchange station and resource differential pressure of each heat exchange station into the heat load model, and can obtain the system water supply temperature, the heat source water pump frequency and the valve opening of each heat exchange station for regulating and controlling the initialization of the heat pipe network equipment. The method realizes the setting of the initialization state when the heat pipe network system is started based on the historical operation data of the heat pipe network system, the initialization process is quick and effective, the heat source preparation and the heat supply quality at the initial stage of heat supply are ensured, the operation regulation risk is reduced, a favorable basis is provided for converting the passive regulation mode of the traditional urban heat supply pipe network system into the active regulation mode, the hydraulic working condition stability of the system is improved, and the operation efficiency is improved.
In order to better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
The method for regulating and initializing the heating pipe network equipment based on historical operation data according to the embodiment of the invention is described below with reference to the attached drawings.
Fig. 1 is a method for initializing regulation and control of a thermal pipe network device based on historical operating data according to an embodiment of the present invention. As shown in fig. 1, the method for initializing regulation and control of a thermal pipe network device based on historical operating data includes the following steps:
101. the method comprises the steps of butt-joint of a heat supply automatic control system of a heat pipe network system to be initialized, and collecting historical operation data of the heat pipe network system to be initialized and water return temperature of the heat pipe network system to be initialized at the current moment; and collecting outdoor climate data at the current moment.
Specifically, as an example, the collected historical operation data of the thermal pipe network system to be initialized is 2 years of historical operation data, and the historical operation data includes basic data such as the temperature, pressure and flow of a heat source and each heat exchange station, the frequency of a heat source water pump, the opening of a valve of each heat exchange station and the like.
Specifically, before a heat pipe network system is initialized, cold water is filled in the heat pipe network to prepare for starting the heat pipe network; when the heat pipe network system is initialized, the system return water temperature Th at the current moment can be acquired in real time through the automatic heat supply control system of the heat pipe network system to be initialized 0 . Because the heat pipe network system does not start to supply heat at the current moment, the return water temperature of the system at the current moment is actually the circulating return water temperature of the cold water of the system.
Specifically, outdoor climate data at the current moment is collected by butting weather forecast; outdoor climate data includes outdoor temperature T W Outdoor wind speed V and outdoor humidity phi.
In this example, as shown in fig. 2 and 3, the heat pipe network system to be initialized is composed of 1 heat source and 3 heat exchange stations (heat exchange station a, heat exchange station B and heat exchange station C, respectively), wherein a, B, C, d, e and f represent each connection node between water supply pipelines in the heat pipe network system to be initialized, and a ', B ', C ', d ', e ' and f represent each connection node between water return pipelines in the heat pipe network system to be initialized, the regulating and controlling device of the heat source is a circulating water pump, the regulating and controlling device of the heat exchange station is an electric regulating valve, and the heat supply automatic control system of the heat pipe network system to be initialized has real-time data acquisition and storage functions.
102. And preprocessing historical operating data.
Specifically, the pretreatment process comprises: cleaning data missing values, unifying data formats, removing data repeated values, correcting unreasonable data values, removing non-target data segments, and performing relevance verification among data from different sources according to expert knowledge.
Wherein, cleaning the data missing value comprises: determining a data missing range, removing non-target data segments in the missing range, and filling data missing values of target data segments in the missing range according to business knowledge.
In this embodiment, the target data segment refers to the temperature, pressure, and flow rate of the heat source and each heat exchange station, as well as the frequency of the water pump of the heat source and the valve opening of each heat exchange station.
And correcting the unreasonable data value, wherein the unreasonable data value comprises the following steps: and taking the historical operating data exceeding the preset data distribution range as an unreasonable data value, and correcting the unreasonable data value according to the service knowledge.
As an example, relevance verification is performed between data from different sources according to expert knowledge, and the relevance verification comprises the following steps: and performing relevance verification on data from corresponding different sources according to expert knowledge that the outlet temperature of the heat source pipe network is higher than the water supply temperature of each user, the water supply pressure of each heat exchange station is higher than the return water pressure of each heat exchange station, the total circulation flow of the system is greater than the sum of the circulation flows of the heat exchange stations and the like. The accuracy of the data can be researched and judged.
Therefore, by preprocessing the historical data, the data searching and running speed is improved, and the accuracy of analyzing the historical running data is ensured.
103. And obtaining an initialized system constant pressure difference point, a system total flow, each heat exchange station flow and each heat exchange station resource pressure difference according to the historical operating data of the heat pipe network system to be initialized in a stable state.
And the steady state is a state corresponding to the longest period of time for which the system flow value and the system pressure value are kept constant in the operation process of the thermal pipe network system. Specifically, as an example, the system constant flow (i.e., the system flow value is constant) condition is: the flow value data of the main pipe of the continuous system for more than 4 weeks meets G e [ G ∈ 0 ×0.85，G 0 ×1.15]Wherein G is the flow value of the system main pipe, G 0 The flow of the system main pipe is taken as a change reference value; the system constant pressure conditions are as follows: the pressure difference of the water supply and return main pipes of the system for more than 4 continuous weeks meets the requirement that delta P belongs to the range of delta P0-0.05 and delta P0+0.05]Wherein, the delta P is the pressure difference value of the water supply and return main pipes of the system, and the delta P0 is the change reference value of the pressure difference value of the water supply and return main pipes of the system.
The heat pipe network system can be determined to be in a stable state only according to the flow value and the pressure value without considering the temperature value, because the temperature is a dependent variable and changes along with the change of the pressure and the flow, the change state of the flow and the pressure is determined, and the change state of the temperature is also determined.
Specifically, obtaining an initialized system constant pressure difference point, a system total flow, flows of heat exchange stations and resource pressure differences of the heat exchange stations according to historical operating data of the system in a steady state includes: obtaining a change reference value of the pressure difference value of a water supply main pipe and a water return main pipe of the system and a change reference value of the flow of the main pipe of the system according to historical operation data of the system in a steady state, taking the change reference value of the pressure difference value of the water supply main pipe and the water return main pipe of the system as an initialized system constant pressure difference point, and taking the change reference value of the flow of the main pipe of the system as a total flow of the system; acquiring a resource pressure difference data set of each heat exchange station under a constant pressure difference point of the system and a flow data set of each heat exchange station under the total flow of the system according to historical operating data of the system under a steady state; and averaging the qualification pressure difference data sets of each heat exchange station to obtain initialized qualification pressure difference of each heat exchange station, and averaging the flow data sets of each heat exchange station to obtain initialized flow of each heat exchange station.
Specifically, as an example, according to historical operation data of the system in a steady state, a difference value between a pressure value of a water supply main pipe and a pressure value of a water return main pipe of the heat pipe network system is determined as a representation value of a system constant pressure difference point, and a main pipe flow value of the heat pipe network system is determined as a system total flow. Thus, the calculation amount is reduced, and the initialization efficiency is high.
Specifically, in the thermal pipe network system to be initialized of the present example, the initialized system constant pressure difference point Δ P is obtained 0 Total flow G of the system 0 Heat exchange station A flow G A Energy supply pressure difference (one-network side water supply and return pressure difference) delta P of heat exchange station A A B flow G of heat exchange station B Pressure difference delta P for resource B of heat exchange station B C flow G of heat exchange station C Pressure difference delta P for capital C of heat exchange station C 。
Conceivably, obtaining the initialized system constant pressure difference point, the system total flow, the flow of each heat exchange station and the resource pressure difference of each heat exchange station according to the historical operating data of the system in the steady state includes: carrying out weighted average on historical operating data of the system in a steady state, and acquiring an initialized system constant pressure difference point and a system total flow according to the operating data after weighted average; the flow rate of each heat exchange station and the resource pressure difference of each heat exchange station are obtained as described above. In this manner, a similar effect can be achieved.
104. When the system is initialized, the total flow of the system and outdoor climate data during system startup (namely the current moment) are input into a system heat load model which is constructed in advance, heat demand and system supply and return water temperature difference are output, and the system supply water temperature is obtained according to the system return water temperature and the system supply and return water temperature difference. Inputting a system constant pressure difference point and a system total flow into a pre-constructed heat source water pump model, and outputting heat source water pump frequency; and inputting the flow and the qualification pressure difference of each heat exchange station into a corresponding pre-constructed heat exchange station regulation and control equipment model, and outputting the regulation and control information of each heat exchange station.
Specifically, in the thermal pipe network system to be initialized in this example, the total system flow rate G is set 0 Outdoor temperature T W Inputting the outdoor wind speed V and the outdoor humidity phi into a pre-constructed system heat load model-1, and outputting a heat demand Q 0 Temperature difference delta T of supply and return water of sum system 0 。
Specifically, the system water supply temperature Tg is obtained according to the system water return temperature and the system water supply and return temperature difference 0 The method comprises the following steps: tg of 0 ＝△T 0 +Th 0 。
Specifically, in the thermal pipe network system to be initialized of the present example, the system constant differential pressure point Δ P 0 And total flow rate of system G 0 Inputting a pre-constructed heat source water pump model-2 and outputting heat source water pump frequency f 0 。
Specifically, in the thermal pipe network system to be initialized in this example, the heat exchange station regulation and control equipment model is a heat exchange station valve model, and the flow G of the heat exchange station a is calculated A And the asset differential pressure DeltaP A Inputting a pre-constructed valve model-3A of the heat exchange station A and outputting the valve opening theta of the heat exchange station A A (ii) a Flow G of heat exchange station B B And the asset differential pressure DeltaP B Inputting a pre-constructed valve model-3B of the heat exchange station B and outputting the valve opening theta of the heat exchange station B B (ii) a Flow G of heat exchange station C C And the asset differential pressure DeltaP C Inputting a pre-constructed valve model-3C of the heat exchange station C and outputting the valve opening theta of the heat exchange station C C 。
It should be noted that the control device of the heat exchange station is not necessarily only a valve, but also can control the heat exchange station by a secondary pump. Therefore, optionally, the heat exchange station regulation and control equipment model is a heat exchange station secondary pump model, the flow and the qualification pressure difference of each heat exchange station are input into a corresponding heat exchange station secondary pump model which is constructed in advance, and the operating frequency of each heat exchange station secondary pump is output.
Specifically, the system heat load model, the heat source water pump model and the heat exchange station valve model that this embodiment relates to are constructed by the following method: generating trend characteristics according with equipment and system operation mechanisms according to historical operation data so as to improve the fitting degree and accuracy of the model; based on the trend characteristics, a machine learning mode is adopted, and a mathematical model representing physical operating characteristics is obtained by training through a multivariate primary model, a multivariate secondary model, a least square algorithm and a Bayesian parameter optimization algorithm. Therefore, a system heat load model, a heat source water pump model and a heat exchange station valve model can be established.
105. And regulating and controlling the initialization of the heating power pipe network equipment according to the water supply temperature of the system, the frequency of the heat source water pump and the opening degree of a valve of each heat exchange station.
Specifically, in the thermal power piping system to be initialized in this example, the water supply temperature Tg is set according to the system 0 Heat source water pump frequency f 0 Valve opening theta of heat exchange station A A Valve opening theta of heat exchange station B B And valve opening theta of heat exchange station C C And regulating and controlling the initialization of the heating power pipe network equipment.
In summary, the total heat load of the system is obtained according to the historical operation data of the heat pipe network system under the steady state and the current outdoor climate data, a total target requirement is provided for the system, a target requirement is provided for the supply capacity of each device in the system according to the historical operation data of the heat pipe network system under the steady state and the condition of each device in the heat pipe network system, and the target requirement is specifically reflected as the water supply temperature of the system, the frequency of a heat source water pump and the regulation and control information of each heat exchange station. The initialization state of the heating power pipe network equipment is further set according to the obtained system water supply temperature, the heat source water pump frequency and the regulation and control information of each heat exchange station, so that the initialization process is quick and effective, the heat source preparation and the heat supply quality at the initial stage of heat supply are ensured, the operation regulation and control risk is reduced, a favorable basis is provided for converting the passive regulation mode of the traditional urban heating pipe network system into the active regulation mode, the hydraulic working condition stability of the system is improved, and the operation efficiency is improved. In addition, the invention adopts a big data and artificial intelligence mode, and the strong data analysis capability can realize the self-learning and self-adaptive capability of the system when facing the central heating problem under the same complex working condition, and is not limited to a certain special trigger time.
It should be noted that after the initialization of the thermal pipe network equipment is regulated, the system of the thermal pipe network needs to be reviewed and corrected. Specifically, the execution condition of the thermal pipe network system is checked, and manual intervention is performed on users who cannot achieve preset effects due to pipe network hardware problems, communication faults, user changes and the like. For example, in a special scenario where a device failure cannot reach an expected setting value, the device is not temporarily brought into an initialization range due to a hardware problem or a communication failure, and a user temporarily does not need to supply heat, manual judgment and regulation are required.
Fig. 4 is a schematic structural diagram of a device for regulating and initializing a thermal pipe network based on historical operating data according to an embodiment of the present invention.
As shown in fig. 4, the device for initializing regulation and control of a thermal pipe network equipment based on historical operating data includes: the system comprises a data acquisition module 1, a data mining module 2 and an initialization module 3.
The data acquisition module 1 is used for acquiring historical operation data of the thermal pipe network system to be initialized, outdoor climate data at the current moment and system return water temperature. And the data mining module 2 is used for acquiring initialized system constant pressure difference points, system total flow, flow of each heat exchange station and resource pressure difference of each heat exchange station according to historical operating data of the system in a steady state. The initialization module 3 is used for inputting the total system flow and outdoor climate data into a system heat load model which is constructed in advance, outputting heat demand and system supply and return water temperature difference, and obtaining system supply water temperature according to the system return water temperature and the system supply and return water temperature difference; inputting a system constant pressure difference point and a system total flow into a pre-constructed heat source water pump model, and outputting heat source water pump frequency; inputting the flow and the qualification pressure difference of each heat exchange station into a corresponding pre-constructed heat exchange station regulation and control equipment model, and outputting the regulation and control information of each heat exchange station; and (4) regulating and controlling the initialization of the heating power pipe network equipment according to the system water supply temperature, the heat source water pump frequency and the regulation and control information of each heat exchange station.
As an embodiment, the thermal pipe network equipment regulation and initialization device based on historical operating data further comprises a data preprocessing module 4; the data preprocessing module 4 is used for preprocessing historical operating data; the pretreatment comprises the following steps: cleaning missing data values, unifying data formats, removing repeated data values, correcting unreasonable data values, deleting non-target data segments, and performing relevance verification between data from different sources according to expert knowledge.
And the data mining module 2 is used for acquiring initialized system constant pressure difference points, system total flow, flow of each heat exchange station and resource pressure difference of each heat exchange station according to the preprocessed historical operating data of the system in a stable state.
As an embodiment, the data mining module 2 is configured to obtain a change reference value of a pressure difference value of a water supply main pipe and a water return main pipe of the system and a change reference value of a flow rate of the system main pipe according to historical operation data of the system in a steady state, use the change reference value of the pressure difference value of the water supply main pipe and the water return main pipe of the system as an initialized system constant pressure difference point, and use the change reference value of the flow rate of the system main pipe as a total flow rate of the system; acquiring a resource pressure difference data set of each heat exchange station under a constant pressure difference point of the system and a flow data set of each heat exchange station under the total flow of the system according to historical operating data of the system under a steady state; and averaging the qualification pressure difference data sets of each heat exchange station to obtain initialized qualification pressure difference of each heat exchange station, and averaging the flow data sets of each heat exchange station to obtain initialized flow of each heat exchange station.
It should be noted that specific functions of each module in the apparatus for initializing regulation and control of a heat distribution network device based on historical operating data and the process for initializing regulation and control of a heat distribution network device based on historical operating data, which are provided in this embodiment, may refer to the detailed description of the method for initializing regulation and control of a heat distribution network device based on historical operating data, which is provided in embodiment 1 and is not described herein again.
In summary, the device for initializing regulation and control of a thermal pipe network device based on historical operating data according to the embodiments of the present invention obtains a total heat load of a system according to historical operating data of a thermal pipe network system under a steady state and current outdoor climate data, and provides a total target requirement for the system, and provides a target requirement for the supply capacity of each device in the system according to historical operating data of the thermal pipe network system under the steady state and the condition of each device in the thermal pipe network system, which is specifically reflected as the system water supply temperature, the heat source water pump frequency and the regulation and control information of each heat exchange station. The initialization state of the heating power pipe network equipment is further set according to the obtained system water supply temperature, the heat source water pump frequency and the regulation and control information of each heat exchange station, so that the initialization process is quick and effective, the heat source preparation and the heat supply quality at the initial stage of heat supply are ensured, the operation regulation and control risk is reduced, a favorable basis is provided for converting the passive regulation mode of the traditional urban heating pipe network system into the active regulation mode, the hydraulic working condition stability of the system is improved, and the operation efficiency is improved.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions.
It should be noted that in the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The use of the terms first, second, third and the like are for convenience only and do not denote any order. These words are to be understood as part of the name of the component.
Furthermore, it should be noted that in the description of the present specification, the description of the term "one embodiment", "some embodiments", "examples", "specific examples" or "some examples", etc., means that a specific feature, structure, material or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, the claims should be construed to include preferred embodiments and all changes and modifications that fall within the scope of the invention.
It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention should also include such modifications and variations.
Claims (9)
1. A heating power pipe network equipment regulation and initialization method based on historical operation data is characterized by comprising the following steps:
acquiring historical operation data of a thermal pipe network system to be initialized, outdoor climate data at the current moment and system return water temperature; obtaining an initialized system constant pressure difference point, a system total flow, each heat exchange station flow and each heat exchange station resource pressure difference according to historical operating data of the system in a steady state;
inputting the total system flow and outdoor climate data into a pre-constructed system heat load model, outputting heat demand and system supply and return water temperature difference, and obtaining system supply water temperature according to the system return water temperature and the system supply and return water temperature difference;
inputting a system constant pressure difference point and a system total flow into a pre-constructed heat source water pump model, and outputting heat source water pump frequency; inputting the flow and the qualification pressure difference of each heat exchange station into a corresponding pre-constructed heat exchange station regulation and control equipment model, and outputting the regulation and control information of each heat exchange station;
and regulating and controlling the initialization of the heating power pipe network equipment according to the system water supply temperature, the heat source water pump frequency and the regulation and control information of each heat exchange station.
2. The thermal pipe network plant regulation initialization method based on historical operating data of claim 1, wherein,
inputting the flow and the qualification pressure difference of each heat exchange station into a corresponding heat exchange station valve model which is constructed in advance, and outputting the valve opening of each heat exchange station; regulating and controlling the initialization of heating power pipe network equipment according to the system water supply temperature, the frequency of a heat source water pump and the opening degree of a valve of each heat exchange station;
or,
inputting the flow and the qualification pressure difference of each heat exchange station into a corresponding pre-constructed secondary pump model of the heat exchange station, and outputting the operating frequency of the secondary pump of each heat exchange station; and regulating and controlling the initialization of the heating power pipe network equipment according to the water supply temperature of the system, the frequency of the heat source water pump and the operating frequency of the secondary pump of each heat exchange station.
3. The thermal pipe network plant regulation initialization method based on historical operating data of claim 1, wherein,
outdoor climate data includes outdoor temperature, outdoor wind speed, and outdoor humidity.
4. The thermal pipe network plant regulation initialization method based on historical operating data of claim 1, wherein,
the steady state is a state corresponding to the longest period of time that the system flow value and the system pressure value are kept constant in the operation process of the thermal pipe network system;
the system constant flow conditions are as follows: the flow value data of the main pipe of the continuous system for more than 4 weeks meets G e [ G ∈ 0 ×0.85，G 0 ×1.15]Wherein G is the flow value of the system main pipe, G 0 The flow of the system main pipe is taken as a change reference value;
the system constant pressure conditions are as follows: the pressure difference value of the water supply and return main pipes of the system for more than 4 continuous weeks meets the requirement that delta P belongs to [ delta P0-0.05 and delta P0+0.05], wherein the delta P is the pressure difference value of the water supply and return main pipes of the system, and the delta P0 is the change reference value of the pressure difference value of the water supply and return main pipes of the system.
5. The method for regulating and initializing heat distribution pipe network equipment based on historical operating data according to claim 1 or 4, wherein the steps of obtaining the initialized system constant pressure difference point, the total system flow, the flow of each heat exchange station and the resource pressure difference of each heat exchange station according to the historical operating data of the system in a steady state comprise:
obtaining a change reference value of the pressure difference value of a water supply main pipe and a water return main pipe of the system and a change reference value of the flow of the main pipe of the system according to historical operation data of the system in a steady state, taking the change reference value of the pressure difference value of the water supply main pipe and the water return main pipe of the system as an initialized system constant pressure difference point, and taking the change reference value of the flow of the main pipe of the system as a total flow of the system; or,
carrying out weighted average on historical operating data of the system in a steady state, and acquiring an initialized system constant pressure difference point and a system total flow according to the operating data after weighted average;
acquiring a resource pressure difference data set of each heat exchange station under a constant pressure difference point of the system and a flow data set of each heat exchange station under the total flow of the system according to historical operating data of the system under a steady state; and averaging the qualification pressure difference data sets of each heat exchange station to obtain initialized qualification pressure difference of each heat exchange station, and averaging the flow data sets of each heat exchange station to obtain initialized flow of each heat exchange station.
6. The thermal pipe network plant regulation initialization method based on historical operating data of claim 1, wherein,
according to historical operation data of the system in a steady state, determining the difference value between the pressure value of a water supply main pipe and the pressure value of a water return main pipe of the heat power pipe network system as a system constant pressure difference point, and determining the main pipe flow value of the heat power pipe network system as the total system flow.
7. A heating power pipe network equipment regulation and control initialization device based on historical operation data is characterized by comprising the following components:
the data acquisition module is used for acquiring historical operation data of the thermal pipe network system to be initialized, outdoor climate data at the current moment and system return water temperature;
the data mining module is used for acquiring initialized system constant pressure difference points, system total flow, flow of each heat exchange station and resource pressure difference of each heat exchange station according to historical operating data of the system in a steady state;
the system comprises an initialization module, a system water supply module and a system water supply and return module, wherein the initialization module is used for inputting the total system flow and outdoor climate data into a pre-constructed system heat load model, outputting heat demand and system water supply and return temperature difference, and obtaining system water supply temperature according to the system water return temperature and the system water supply and return temperature difference; inputting a system constant pressure difference point and a system total flow into a pre-constructed heat source water pump model, and outputting heat source water pump frequency; inputting the flow and the qualification pressure difference of each heat exchange station into a corresponding pre-constructed heat exchange station regulation and control equipment model, and outputting the regulation and control information of each heat exchange station; and regulating and controlling the initialization of the heating power pipe network equipment according to the system water supply temperature, the heat source water pump frequency and the regulation and control information of each heat exchange station.
8. The thermal pipe network equipment regulation and initialization device based on historical operating data of claim 7, further comprising:
the data preprocessing module is used for preprocessing historical operating data;
and the data mining module is used for acquiring initialized system constant pressure difference points, system total flow, flow of each heat exchange station and resource pressure difference of each heat exchange station according to the preprocessed historical operating data of the system in a stable state.
9. The thermal pipe network equipment regulation and initialization device based on historical operating data of claim 7, wherein,
the data mining module is used for acquiring a change reference value of the pressure difference value of the water supply main pipe and the water return main pipe of the system and a change reference value of the flow of the system main pipe according to historical operation data of the system in a steady state, taking the change reference value of the pressure difference value of the water supply main pipe and the water return main pipe of the system as an initialized system constant pressure difference point, and taking the change reference value of the flow of the system main pipe as a total flow of the system; acquiring a resource pressure difference data set of each heat exchange station under a constant pressure difference point of the system and a flow data set of each heat exchange station under the total flow of the system according to historical operating data of the system under a steady state; and averaging the qualification pressure difference data sets of each heat exchange station to obtain initialized qualification pressure difference of each heat exchange station, and averaging the flow data sets of each heat exchange station to obtain initialized flow of each heat exchange station.
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| CN117830033B (en) * | 2024-03-06 | 2024-06-04 | 深圳市前海能源科技发展有限公司 | Regional cooling and heating system regulation and control method and device, electronic equipment and storage medium |
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