Distributed energy dynamic control system and method based on soil medium

Abstract

The invention relates to the technical field of energy control, in particular to a distributed energy dynamic control system and method based on a soil medium, and the method comprises the following steps: collecting physical data of a buried pipe field, and constructing a regional model based on the physical data; collecting equipment data of the heat pump connected with each buried pipe group, and integrating the three-dimensional model of the heat pump into the regional model to form a heat exchange model; configuring a control network for each heat exchange sub-region in the heat exchange model, and establishing communication connection between the control network and the heat pump corresponding to each heat exchange sub-region; and the heat load demand temperature values of the heat pumps corresponding to the heat exchange sub-areas and the operation data corresponding to the heat pumps are obtained, the stability of the water flow temperature in the heat exchange areas corresponding to the heat pumps can be improved, and therefore the operation efficiency of the heat pumps is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of energy control, in particular to a distributed energy dynamic control system and method based on soil medium. BACKGROUND

[0002] With the deepening of the "double carbon" goal, clean heating / cooling technologies represented by ground source heat pumps have been widely used. Such technologies use soil as a constant temperature heat source or heat sink, and exchange energy with buildings through buried pipe heat exchangers, which has the characteristics of high energy efficiency and stable operation. In the long-term operation of traditional ground source heat pumps, the soil in the heat absorption area becomes colder (cold accumulation), and the soil in the heat rejection area becomes hotter (hot accumulation), which reduces the temperature difference between the heat pump and the soil and affects the heat exchange efficiency.

[0003] To solve the above problems, we propose a distributed energy dynamic control system and method based on soil medium. SUMMARY

[0004] The purpose of the present application is to provide a distributed energy dynamic control system and method based on soil medium to solve the problems raised in the background.

[0005] To achieve the above purpose, the present application provides the following technical solution: a distributed energy dynamic control system and method based on soil medium, the method comprising the following steps: Collecting physical data of the buried pipe field, constructing a regional model based on the physical data; collecting equipment data of the heat pump connected to each buried pipe group, and integrating a three-dimensional model of the heat pump into the regional model to form a heat exchange model; Configuring a control network for each heat exchange sub-region in the heat exchange model, and establishing a communication connection between the control network and the corresponding heat pump of each heat exchange sub-region; Obtaining the heat load demand temperature value of the corresponding heat pump of each heat exchange sub-region and the operation data of the heat pump, adjusting the position of the control point in the control network based on the communication connection according to the heat load demand temperature value and the operation data, and controlling the corresponding pipe valve based on the position of the control point.

[0006] Preferably, the step of collecting physical data of the buried pipe field and constructing a regional model based on the physical data comprises: Collecting structure data of the buried pipe in the soil area for energy supply, wherein the structure data includes the layout of the buried pipe and the connection mode between the buried pipes; Collecting the soil type, soil temperature and water depth of the soil where the buried pipe field is located as geothermal physical data; Collecting the geothermal physical data and structure data of the buried pipe field as physical data, and constructing a regional model based on the physical data.

[0007] Preferably, the step of configuring a control network for each heat exchange sub-region in the heat exchange model comprises: In the heat exchange model, the ground heat exchanger field is divided into multiple heat exchange sub-regions, and at least one heating sub-region and at least one cooling sub-region are defined based on the functional attributes of the heat pumps corresponding to the multiple heat exchange sub-regions; Obtain multiple ground heat exchanger groups in the heat exchange sub-region, configure a control point and a corresponding control line for each ground heat exchanger group; Connect multiple control points to obtain a control network corresponding to the heat exchange sub-region.

[0008] Preferably, the step of obtaining multiple ground heat exchanger groups in the heat exchange sub-region, configuring a control point and a corresponding control line for each ground heat exchanger group comprises: Based on the installation depth of the ground heat exchanger, the ground heat exchanger group is divided into multiple exchange regions of different levels; Configure a control point for each exchange region, and connect multiple control points in order of level to obtain a control line; Configure a control point for each ground heat exchanger group and the movement condition of the control point, wherein the movement condition is determined according to the temperature difference of the heat exchange sub-region.

[0009] Preferably, the step of establishing a communication connection between the control network and the heat pumps corresponding to each heat exchange sub-region comprises: Obtain the control points corresponding to each control line in the control network and the multiple heat pumps in the heat exchange sub-region; Configure a communication port for each of the multiple heat pumps and the control points, establish a connection line between the communication port of the corresponding heat pump and the communication port of the corresponding control point, and set a trigger condition for the connection line, wherein the trigger condition includes a disconnection condition and a connection condition; Based on the connection line and the corresponding trigger condition, establish a communication connection between the control point and the heat pump, and take the communication connection between multiple control points and multiple heat pumps as the communication connection between the control network and the heat pumps corresponding to each heat exchange sub-region.

[0010] Preferably, the step of establishing a communication connection between the control point and the heat pump based on the connection line and the corresponding trigger condition comprises: Obtain the functional attributes of the heat pumps connected to the control point, determine the functional attributes of the ground heat exchanger group soil associated with the heat pumps according to the functional attributes of the heat pumps, and set a corresponding soil temperature threshold for the ground heat exchanger group; and The soil temperature value not meeting the set soil temperature threshold is taken as a disconnecting condition, when the disconnecting condition is triggered, the control point actively disconnects the connection with the current heat pump, and meanwhile, from the heat pump group different from the disconnected heat pump in the functional attribute, a heat pump with the largest temperature difference between the heat load demand temperature value and the current soil temperature value in the heat exchange sub-region is selected as a new connection object; The communication port of the control point triggering the disconnection and the new connection object is connected to obtain a communication connection between the control point and the heat pump.

[0011] Preferably, the step of obtaining the heat load demand temperature value of the heat pump corresponding to each heat exchange sub-region and the operation data corresponding to the heat pump, adjusting the position of the control point in the control network based on the communication connection according to the heat load demand temperature value and the operation data, and controlling the corresponding pipeline valve based on the position of the control point comprises: The water supply temperature set value corresponding to each heat exchange sub-region is obtained in real time as the heat load demand temperature value of the heat pump; The soil temperature value of each exchange region corresponding to the heat pump is obtained in real time as the operation data corresponding to the heat pump; The connection object of the control point in the control network and the control point position of the control point are adjusted based on the heat load demand temperature value and the operation data corresponding to the heat pump; Based on the binding relationship between the current control point position of the control point and the pipeline valve, a valve control signal corresponding to the current control instruction is generated, and the bound pipeline valve is controlled.

[0012] A distributed energy dynamic control system based on soil medium, applied to the distributed energy dynamic control method based on soil medium in any of the above, comprising: A model construction module is configured to collect physical data of the buried pipe field, construct a regional model based on the physical data, collect equipment data of the heat pump connected to each buried pipe group, and integrate a three-dimensional model of the heat pump into the regional model to form a heat exchange model; A setting module is configured to configure a control network for each heat exchange sub-region in the heat exchange model, and establish a communication connection between the control network and the heat pump corresponding to each heat exchange sub-region; A control module is configured to obtain the heat load demand temperature value of the heat pump corresponding to each heat exchange sub-region and the operation data corresponding to the heat pump, adjust the position of the control point in the control network based on the communication connection according to the heat load demand temperature value and the operation data, and control the corresponding pipeline valve based on the position of the control point.

[0013] Compared with the prior art, the beneficial effects of the present application are: Based on the connection between the multiple control points in the control network and the heat pump and the soil area where the control point is located and the ground heat exchanger group is driven to flow between multiple heat pumps with different functional attributes, the heat accumulation or cold accumulation of the soil area caused by the long-term use of the heat pump with the same functional attribute to the same area is reduced, the global resource is balanced and distributed, the stability of the water flow temperature in the heat exchange area corresponding to each heat pump is increased, and the operation efficiency of the heat pump is improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0015] Fig. 1 The method flowchart of the present application is shown in the figure. Fig. 2 The structure diagram of the control network of the present application is shown in the figure. Fig. 3 The system structure block diagram of the present application is shown in the figure. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present application will be described clearly and completely in the following with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application. EMBODIMENT

[0017] Please refer to Figs. 1 to 3 The present application provides a kind of distributed energy dynamic control system and method based on soil medium technical solutions: a kind of distributed energy dynamic control method based on soil medium, comprising the following steps: S1: collect the physical data of ground heat exchanger field, construct regional model based on physical data;Collect the equipment data of heat pump connected with each ground heat exchanger group, and integrate the three-dimensional model of heat pump into the regional model, form heat exchange model; The step of collecting physical data of the ground heat exchanger field and constructing a regional model based on the physical data comprises: collecting structure data of the ground heat exchanger in the soil region for energy supply, wherein the structure data comprises a layout of the ground heat exchanger and a connection mode between the ground heat exchangers; collecting soil types, soil temperatures and water level depths of the soil where the ground heat exchanger field is located as geothermal physical data; taking the geothermal physical data and the structure data of the ground heat exchanger field as physical data, and constructing a regional model based on the physical data; Specifically, the layout data comprises geographical coordinates and distribution of the drill holes in the ground heat exchanger field, distances between the drill holes, depths and sizes of the drill holes, determination of parallel connection of the U-shaped pipes in each adjacent drill hole through the water collector to form a ground heat exchanger loop, division of the entire ground heat exchanger field into multiple ground heat exchanger groups, and installation of an electric regulating valve on a main pipeline of each ground heat exchanger group; the geothermal physical data at least comprises soil types, soil temperatures and water level depths, and the collected physical data is input into simulation software such as TRNSYS, so as to construct a ground heat exchanger field regional model capable of simulating fluid flow, heat transfer and soil temperature field change, for subsequent communication connection with corresponding heat pumps to form a heat exchange model, and for dynamic regulation and control of the multiple ground heat exchanger groups in the soil region, which is equivalent to dynamic scheduling of the heat pumps connected with the ground heat exchanger groups, so as to make the resource distribution of the soil region more balanced, wherein the resource refers to temperature brought by the soil medium, and energy is generated through operation of the heat pumps.

[0018] S2: configuring a control network for each heat exchange sub-region in the heat exchange model, and establishing communication connection between the control network and the heat pumps corresponding to the heat exchange sub-regions; The step of configuring a control network for each heat exchange sub-region in the heat exchange model comprises: performing regional division on the ground heat exchanger field to obtain multiple heat exchange sub-regions, defining at least one heating sub-region and at least one cooling sub-region based on function attributes of the heat pumps corresponding to the multiple heat exchange sub-regions; obtaining multiple ground heat exchanger groups in the heat exchange sub-region, configuring a control point and a corresponding control line for each ground heat exchanger group; and connecting the multiple control points to obtain a control network corresponding to the heat exchange sub-region.

[0019] The step of obtaining multiple ground heat exchanger groups in the heat exchange sub-region and configuring a control point and a corresponding control line for each ground heat exchanger group comprises: dividing the ground heat exchanger groups based on installation depths of the ground heat exchangers to obtain multiple exchange regions of different levels; configuring a control point for each exchange region, and sequentially connecting the multiple control points to obtain a control line in the order of levels; and configuring a control point and a movement condition of the control point for each ground heat exchanger group, wherein the movement condition is determined according to a change temperature difference of the heat exchange sub-region; It should be noted that the temperature difference is determined according to the temperature value of the heat load demand of the heat pump and the soil temperature value of the newly accessed buried pipe group, and the operation data refers to the current temperature of the buried pipe group, and the change temperature difference in the heat exchange sub-region is determined according to the temperature; Specifically, by collecting soil areas used as energy sources, forming a ground heat exchanger field according to the ground heat exchanger buried in the soil area, dividing the soil area where the ground heat exchanger field is located according to different functional attributes of each soil area, obtaining a plurality of heat exchange sub-regions, and using at least one heat exchange sub-region for cooling, while using another heat exchange sub-region for heating, the cooling and heating here refer to the functional attributes of the heat pump unit corresponding to the heat exchange sub-region, each heat exchange sub-region corresponds to a heat pump unit, thereby obtaining two heat pump units running simultaneously and corresponding to the cooling sub-region and the heating sub-region respectively, each soil area contains a plurality of ground heat exchanger groups, the ground heat exchanger field is composed of a plurality of ground heat exchanger groups, and the ground heat exchanger group is composed of a plurality of ground heat exchanger loops of different levels, the level of the ground heat exchanger loop is according to the burial depth of the ground heat exchanger, a plurality of ground heat exchanger loops contained in a ground heat exchanger group are located on the same vertical line, which is equivalent to longitudinally dividing the soil area where the ground heat exchanger group is located into a plurality of soil sub-regions; obtaining each heat pump unit connected in the ground heat exchanger field, each heat pump unit corresponds to a heat exchange sub-region, classifying the heat pump units and the heat exchange sub-regions corresponding to the heat pump units according to the functional attributes of the heat pump units, the heat exchange sub-region contains a plurality of ground heat exchanger groups, the ground heat exchanger group contains a plurality of exchange areas composed of ground heat exchanger loops, each exchange area corresponds to a ground heat exchanger loop, the ground heat exchanger loop here refers to the area that can exchange heat at the corresponding soil depth, the temperature of the soil corresponding to the ground heat exchanger at different depths is different, the soil is divided into levels according to the depth, thereby obtaining a plurality of exchange areas of different levels, a control point is arranged in each exchange area, a communication port is arranged on each control point and each heat pump unit, the control point is a virtual, movable intelligent control unit, the intelligent control unit at least contains a virtual communication port and a control instruction set; the control point can establish and maintain an independent communication session with any virtual communication port of the corresponding heat pump through its communication port; the control point can dynamically logically bind itself with a physical executor (valve corresponding to the ground heat exchanger loop in the exchange area), so that its control instruction set only takes effect on the currently bound physical executor; by changing the logical binding target of the control point, the control and communication focus can be seamlessly migrated in the ground heat exchanger group, dynamically selecting which level of exchange area in the ground heat exchanger group to use, the control points are connected in communication, and the ground heat exchanger groups for cooling and the ground heat exchanger groups for heating are interacted according to the communication connection between the control points and the heat pumps, so that the areas between them are used alternately, thereby avoiding long-term one-way heat extraction or heat rejection to a single area, actively maintaining the annual heat balance of the soil area, preventing "heat accumulation" or "cold depletion", enhancing the thermal stability of the heat exchange area, and improving the ability of the system to cope with intermittent load and intermittent energy supply;The heat pump absorbs heat from the circulating water. The higher the temperature of the circulating water, the easier the refrigerant in the heat pump evaporator evaporates, the less work the compressor does, and the higher the efficiency of the heat pump unit. The heat pump discharges heat into the circulating water. The lower the temperature of the circulating water, the easier the refrigerant in the heat pump condenser condenses, the lower the system pressure, the less work the compressor does, and the higher the efficiency of the heat pump unit. Therefore, by using the exchange areas of each level in the heat exchange sub-area in combination, the stability of the overall water temperature from or to the soil is enhanced, the stability of the outlet water temperature of the heat exchange sub-area is effectively maintained, and the heat pump unit connected thereto can be continuously operated in high-efficiency working condition, that is, the stability of the coefficient of performance (COP), the stability of the output capacity and the reliability of long-term operation are ensured.

[0020] The step of establishing a communication connection between the control network and the heat pumps corresponding to each heat exchange sub-area includes: obtaining each control point corresponding to each control line in the control network and a plurality of heat pumps in the heat exchange sub-area; configuring a communication port for each of the plurality of heat pumps and the control points, establishing a connection line between the communication port of the corresponding heat pump and the communication port of the corresponding control point, and setting a trigger condition for the connection line, wherein the trigger condition includes a disconnection condition and a connection condition; based on the connection line and the corresponding trigger condition, establish a communication connection between the control point and the heat pump, and the communication connection between the plurality of control points and the plurality of heat pumps as the communication connection between the control network and the heat pumps corresponding to each heat exchange sub-area. The step of establishing a communication connection between the control point and the heat pump based on the connection line and the corresponding trigger condition includes: obtaining the functional attribute of the heat pump connected to the control point, determining the functional attribute of the ground source heat pump group associated with the heat pump according to the functional attribute of the heat pump, and setting a corresponding soil temperature threshold for the ground source heat pump group; real-time monitoring the soil temperature value of the ground source heat pump group; taking the soil temperature value not meeting the set soil temperature threshold as the disconnection condition, when the disconnection condition is triggered, the control point actively disconnects the connection with the current heat pump, and at the same time, selects the heat pump with the largest temperature difference between the heat load demand temperature value and the current soil temperature value in the heat exchange sub-area from the heat pump group with different functional attributes from the disconnected heat pump as a new connection object; and establishing a connection between the communication port of the control point triggering disconnection and the new connection object to obtain a communication connection between the control point and the heat pump.

[0021] It should be noted that the soil temperature value of the buried pipe group is monitored in real time, and the temperature value herein refers to the average soil temperature value of each exchange region corresponding to the buried pipe group; when the functional attribute of the soil is a heat source, the set soil temperature threshold is the minimum temperature threshold, and when the functional attribute of the soil is a heat sink, the set soil temperature threshold is the maximum temperature threshold, wherein the soil temperature threshold is a dynamically changing value, which can be adaptively adjusted according to seasonal climate prediction data and historical operation data of the buried pipe field; the calculation method of the temperature difference between the heat load demand temperature value and the current soil temperature value in the heat exchange sub-region is as follows: when seeking heating, the temperature difference is the soil temperature value minus the heat pump demand heating temperature; when seeking cooling, the temperature difference is the heat pump demand cooling temperature minus the soil temperature value; when selecting from the candidate heat pump group, the heat pump with the largest temperature difference in the standby state is preferentially selected; if they are all in the running state, the heat pump with the largest temperature difference is selected, and the communication relationship between the heat pump and the control point is triggered to connect them, wherein the current soil temperature value refers to the average soil temperature value of the soil region where the plurality of buried pipe groups in the heat exchange sub-region are located.

[0022] The functional attribute refers to whether the corresponding heat pump of the heat exchange sub-region uses a sink heat exchanger or a source heat exchanger, the sink heat exchanger is connected to the pipeline of the buried pipe group through a valve group and is used for cooling, and the source heat exchanger is connected to the pipeline of the buried pipe group through a valve group and is used for heating; the functional attribute of the soil in the heat exchange sub-region is determined according to whether it is used for heating or cooling; for example, the soil in the heat exchange sub-region is used for heating, which means that it is connected to the source heat exchanger, and the soil in the heat exchange sub-region is used for cooling, which means that it is connected to the sink heat exchanger. The triggering condition includes a disconnection condition and a connection condition. The disconnection condition is that the functional attribute of the heat pump is obtained according to the current soil temperature value of the buried pipe group, the functional attribute of the soil is determined according to the functional attribute of the heat pump, and the soil temperature threshold of the soil region where the buried pipe group is located is set according to the functional attribute of the soil; when the threshold is not met, the control point actively disconnects from the corresponding heat pump, and a heat pump with a different functional attribute is found; from the heat pumps with the same functional attribute, the heat pump with the largest temperature difference between the heat load demand temperature value and the soil temperature value is selected as the connection object, and the communication port of the connection object is connected to the communication port of the control point which is actively disconnected.

[0023] Specifically, the communication ports are arranged on the control points and the heat pumps, the communication connection between the multiple control points indicates the communication connection between the communication ports corresponding to the multiple control points, the communication connection between the multiple control points and the heat pumps is also realized through the communication ports, the communication port of one control point can be connected with the communication ports corresponding to multiple heat pumps, the connection line and the corresponding trigger condition are arranged to realize the disconnection and connection between the control points and the heat pumps, and the control point can be connected with only one heat pump at a time.The heat exchange sub-region for heating is taken as a heating sub-region, the heat exchange sub-region for cooling is taken as a cooling sub-region, a plurality of control points corresponding to the heating sub-region, a heat pump corresponding to the heating sub-region, a plurality of control points corresponding to the cooling sub-region, and a heat pump corresponding to the cooling sub-region are obtained, the soil temperature of the soil sub-region where each ground loop in the heat exchange sub-region is located is monitored in real time, the average soil temperature value of the soil region where the ground pipe group is located is determined based on the soil temperature of each soil sub-region, the soil temperature threshold value of the ground pipe group is set in advance, the ground pipe group corresponding to the average soil temperature value that does not meet the soil temperature threshold value is taken as the disconnection condition of the control point, and the control point is taken as the target control point; at this time, the target control point is actively disconnected from the corresponding heat pump, and the functional attribute of the heat exchange sub-region where the target control point corresponding ground pipe group is located is obtained; assuming that the functional attribute of the heat exchange sub-region where the target control point corresponding ground pipe group is located is cooling, it means that the target control point corresponding ground pipe group is in the cooling sub-region, and its corresponding heat pump is used for cooling, but at this time, the average soil temperature value of the target control point does not meet the soil temperature threshold value, and has been disconnected from the heat pump for cooling, so the target control point at this time is not connected with any heat pump, at this time, a plurality of heat pumps for heating are obtained, and the temperature difference value between the heat load demand temperature value of each heat pump for heating and the average soil temperature value of the heat exchange sub-region is obtained, the heat pump for heating with the largest temperature difference value is taken as the connection object of the target control point, and the communication port of the target control point is started to be connected with the communication port of the connection object, before the connection, the soil temperature value of each exchange region in the target control point corresponding ground pipe group is obtained, the target control point is set on the exchange region whose soil temperature value is closest to the heat load demand temperature value of the heating region, the temperature difference value between the two is obtained, and the control point position of the control point in each ground pipe group in the heating sub-region is adjusted according to the temperature difference value, so as to adjust the exchange region of the control point in other ground pipe groups in the heating sub-region, and further drive the change of the water flow temperature in the whole soil region in the heating sub-region, so that the adjusted temperature is closest to the temperature difference value, and the position of the control point in other ground pipe groups in the cooling sub-region is also adjusted, so as to reduce the water flow temperature change rate caused by the target control point corresponding ground pipe group accessing the heating sub-region, improve the stability of the whole water flow temperature of each heat exchange sub-region while the region is rotated, and ensure the stability of the operation of the heat pump corresponding to the heat exchange sub-region.

[0024] S3: obtaining the heat load demand temperature value of each heat pump corresponding to the heat exchange sub-region and the operation data of the heat pump, adjusting the position of the control point in the control network based on the communication connection according to the heat load demand temperature value and the operation data, and controlling the corresponding pipe valve based on the position of the control point; The step of obtaining the heat load demand temperature value of the heat pump corresponding to each heat exchange sub-region and the operation data of the heat pump and adjusting and controlling the position of the control point in the control network based on the communication connection according to the heat load demand temperature value and the operation data includes: obtaining the water supply temperature set value of each heat exchange sub-region in real time as the heat load demand temperature value of the heat pump; obtaining the soil temperature value of each exchange region corresponding to the heat pump in real time as the operation data corresponding to the heat pump; adjusting the connection object of the control point in the control network and the control point position based on the heat load demand temperature value and the operation data corresponding to the heat pump; based on the binding relationship between the current control point position of the control point and the pipeline valve, generating a valve control signal corresponding to the current control instruction, and controlling the bound pipeline valve.

[0025] The specific content of moving the control points on the control point positions: a plurality of control point positions are set, the control points are located on the control line composed of the control point positions, the control points are moved between the plurality of control point positions according to the moving condition, each control point position corresponds to a different level of soil area where the buried pipe loop is located, and the purpose of moving the control points is to select a suitable level of soil area according to the moving condition, and the moving condition is determined according to the water flow temperature change value caused when the target control point accesses the heat exchange sub-region. According to the water flow temperature change value, the other control points are moved on the control line to be adjusted to the corresponding control point position, and the water flow temperature change value caused after the adjustment level is consistent with the water flow temperature change value caused when the target control point accesses the heat exchange sub-region. The influence value of the water flow temperature after each control point in the heat exchange sub-region is adjusted from the current control point position to other control point positions is obtained, the influence value closest to the water flow temperature change value is obtained, and the difference between the two is calculated. The difference value satisfying the preset fluctuation threshold is taken as the moving condition, and the control point position corresponding to the influence value corresponding to the difference value is taken as the target control point position. According to the moving condition, the control points are selected in turn to be moved to the target control point position, and after the position of one of the control points is moved, the water flow temperature value will change, and at this time the difference value will also be updated. Then, the control points are selected according to the updated difference value to be moved to the corresponding control point position; when the control points are moved on the control line, a pipe valve is set in each buried pipe group, and when the control points need to be moved, the pipe valve corresponding to the current control point position of the control point is closed. At the same time, the control point and the pipe valve corresponding to the current control point position are decoupled, and the pipe valve corresponding to the new control point position is bound. The control point position is equivalent to a virtual network interface, which is used to connect with the control point position equivalent to a port; the control point releases a sub-control point to each control point position in advance, the plurality of sub-control points are communicatively connected, the control point stores the influence value of the control point moving from the current control point position to the control point position on the control point, and the sub-control point carries the stored influence value on the control point source at the same time. According to the influence value, the corresponding difference value is calculated, the control point position corresponding to the difference value satisfying the moving condition is taken as the target control point position, the control point is moved from the current control point position to the target control point position, and the sub-control point on the target control point position sends information to the sub-control point on the other control point position, issues an instruction that the task is completed, and returns each sub-control point to the corresponding control point, so as to ensure the stability of the overall water flow temperature in the heat exchange sub-region when the target control point accesses.

[0026] Specifically, the soil region where the control points between the multiple different levels are located is different, for example, the first layer is the temperature of the soil region closest to the ground surface where the pipe group is located, the second layer is the temperature located between the first layer and the third layer, and the third layer is the lowest temperature, which is also the normal temperature of the soil; when in summer and when the control point corresponds to the soil region for the heating sub-region, at this time the temperature of the soil will decrease with the depth of the soil, indicating that the soil temperature of the first layer is higher than that of the second layer, the soil temperature of the second layer is higher than that of the third layer, and the heating sub-region needs to take heat from the soil region, so the temperature of the soil will gradually decrease, when the average soil temperature value of the soil region corresponding to the ground heat exchanger is lower than the preset soil temperature threshold, it indicates that the ground heat exchanger corresponding to the soil region needs to be disconnected from the heat pump for the heating sub-region, and a new connection object is determined from the cooling sub-region for connection, before the target control point is connected to the new connection object, the control point is moved to the control point position corresponding to the highest soil temperature on the control line, and the temperature difference between the highest soil temperature and the heat load demand temperature value of the new connection object is obtained as the first temperature difference, when connecting the new connection object, the target control point establishes communication with other control points in the cooling sub-region, obtains the current control point position of each control point in the ground heat exchanger in the cooling sub-region, obtains the maximum difference between the soil temperature corresponding to the current control point position and the soil temperature of the exchange region in the same ground heat exchanger as the second temperature difference, and moves the control point corresponding to the second temperature difference closest to the first temperature difference from the current control point position to the control point position of the exchange region corresponding to the maximum difference, obtains the difference between the first temperature difference and the second temperature difference as the after-supplement difference, and moves the control points corresponding to the after-supplement difference from other ground heat exchangers according to the after-supplement difference, so that when the ground heat exchanger is connected to the new connection object, the control points of other ground heat exchangers corresponding to the heat pump are adjusted according to the change of the temperature of the heat pump when the soil temperature exchanges heat with the heat pump, the control point position of the control point is adjusted in different exchange regions, so as to adjust the temperature of the ground heat exchanger, and then adjust the water flow temperature through the ground heat exchanger, and the change of the water flow temperature through the ground heat exchanger is consistent with the change of the soil temperature when the ground heat exchanger is connected, ensuring the stability of the overall water flow temperature, thereby ensuring the stability of the heat pump operating power; when the ground heat exchanger is disconnected from the heat pump corresponding to the heating sub-region, the target control point simultaneously establishes communication with other control points in the heating sub-region, and drives other control points to move the control points in other ground heat exchangers in the heating sub-region according to the temperature change caused by the disconnection of the ground heat exchanger, adjusts the position of the control point in different levels, so as to adjust the temperature of the soil through which the water flows, thereby maintaining the stability of the overall water temperature in the heating sub-region when the ground heat exchanger is disconnected, and thereby ensuring the stability of the heat pump.

[0027] A distributed energy dynamic control system based on soil medium is applied to the distributed energy dynamic control method based on soil medium in any one of the preceding aspects, and comprises: A model construction module is configured to collect physical data of a ground buried pipe field, construct a regional model based on the physical data, collect equipment data of heat pumps connected to each ground buried pipe group, integrate a three-dimensional model of the heat pumps into the regional model, and form a heat exchange model; A setting module is configured to configure a control network for each heat exchange sub-region in the heat exchange model, and establish a communication connection between the control network and the heat pumps corresponding to each heat exchange sub-region; A control module is configured to obtain a heat load demand temperature value of the heat pumps corresponding to each heat exchange sub-region and operation data of the heat pumps, adjust a position of a control point in the control network based on the communication connection according to the heat load demand temperature value and the operation data, and control a corresponding pipe valve based on the position of the control point.

[0028] In the present application, one control point is set for each heat exchange region, the control point is connected with the heat pump, and the control point has the functions of active disconnection and connection. When the other side is disconnected, the other side is connected, and the connection is from the lowest. After the lowest connection, the position of the other control point is adjusted, so that the temperature influence of the connected region on the region is the same as that of the connected region, so that the stability of the heat exchange region when the region is connected is ensured. When the other side is actively disconnected, the other side is adjusted downward to ensure the stability of the heat exchange region when the other side is disconnected. Whether the heat supply region or the cold supply region is added, the same method is used. Based on the connection between the multiple control points in the control network and the heat pumps and the soil region where the control point is located, the soil region where the ground buried pipe group is located flows between multiple heat pumps with different functional attributes, reduces the situation that the same functional attribute heat pump is used for a long time to cause heat accumulation or cold accumulation in the soil region, realizes balanced distribution and scheduling control of global resources, increases the stability of the water flow temperature in the heat exchange region corresponding to each heat pump, and improves the operation efficiency of the heat pump. Through active rotation and fallow, the overused region is given time for natural recovery, effectively preventing the extreme of local soil temperature. This ensures the long-term stability of the basic temperature field of the entire ground buried pipe field, thereby ensuring that the heat pump unit can maintain the high efficiency at the initial design stage throughout the entire life cycle. When part of the load is running, the region with the best heat exchange condition (i.e., the coldest soil for cooling and the hottest soil for heating) can be intelligently enabled in priority. The heat pump unit is always operated under the optimal temperature difference condition, thereby improving the energy efficiency ratio. When the main operating region temporarily decreases in performance or has a slight fault, it can be switched to a heat pump for another functional attribute, thereby improving the soil temperature of the soil region and improving the utilization rate of energy.

[0029] In the description of the specification, reference to "one embodiment", "an example", "a specific example" or the like means that a particular feature, structure, material or characteristic is included in at least one embodiment or example of the present application. The appearances of the above expressions in various places in the specification do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics can be combined in any suitable manner in one or more embodiments or examples.

[0030] While embodiments of the application have been shown and described, it is to be understood that the application is not limited to the details of the embodiments described, since the scope of the application is defined with respect to the appended claims.

Claims

1. A dynamic control method for distributed energy based on soil media, characterized in that, Includes the following steps: Collect physical data of the underground pipeline site and construct a regional model based on the physical data; collect equipment data of heat pumps connected to the underground pipeline group in various places, and integrate the three-dimensional model of the heat pump into the regional model to form a heat exchange model; In the heat exchange model, a control network is configured for each heat exchange sub-region, and a communication connection is established between the control network and the heat pumps corresponding to each heat exchange sub-region. The system acquires the heat load demand temperature value and the corresponding operating data of the heat pumps for each heat exchange sub-region. Based on the heat load demand temperature value and the operating data, it adjusts the position of the control point in the control network through communication connection, and controls the corresponding pipeline valves based on the position of the control point.

2. The method for dynamic control of distributed energy based on soil media according to claim 1, characterized in that: The steps of collecting physical data of the underground pipeline site and constructing a regional model based on the physical data include: Structural data of underground pipes within soil areas used for energy supply is collected, including the layout of underground pipes and the connection methods between them. Soil type, soil temperature, and water depth at the site of the buried pipe are collected as geological thermal property data; Geological, thermal, and structural data of the underground pipeline site are used as physical data, and a regional model is constructed based on the physical data.

3. The method for dynamic control of distributed energy based on soil medium according to claim 1, characterized in that: The step of configuring a control network for each heat transfer sub-region in the heat transfer model includes: In the heat exchange model, the buried pipeline field is divided into multiple heat exchange sub-regions. Based on the functional attributes of the heat pumps corresponding to the multiple heat exchange sub-regions, at least one heating sub-region and at least one cooling sub-region are defined. Obtain multiple underground pipe groups in the heat exchange sub-region, and configure a control point and corresponding control line for each underground pipe group; The control network for the corresponding heat exchange sub-region is obtained by connecting multiple control points.

4. The method for dynamic control of distributed energy based on soil medium according to claim 3, characterized in that: The step of acquiring multiple buried pipe groups in the heat exchange sub-region and configuring a control point and corresponding control line for each buried pipe group includes: The underground pipe network is divided into multiple exchange areas of different levels based on the installation depth of the underground pipes. Configure a control point for each switching area, and connect multiple control points sequentially according to the hierarchical order to obtain control lines; For each underground pipe group, a control point and the movement conditions of the control point are configured. The movement conditions are determined based on the temperature difference of the heat exchange sub-region.

5. The method for dynamic control of distributed energy based on soil medium according to claim 4, characterized in that: The steps for establishing communication connections between the control network and the heat pumps corresponding to each heat exchange sub-region include: Obtain the control point corresponding to each control line in the control network and multiple heat pumps in the heat exchange sub-region; Communication ports are configured for multiple heat pumps and control points. A connection line is established between the communication port of the corresponding heat pump and the communication port of the corresponding control point. Trigger conditions are set for the connection line, including disconnection conditions and connection conditions. A communication connection between the control point and the heat pump is established based on the connection line and the corresponding triggering conditions. The communication connection between multiple control points and multiple heat pumps is used as the communication connection between the control network and the heat pumps corresponding to each heat exchange sub-region.

6. The method for dynamic control of distributed energy based on soil medium according to claim 5, characterized in that: The steps for establishing a communication connection between the control point and the heat pump based on the connection line and the corresponding triggering conditions include: The system acquires the functional attributes of the heat pump connected to the control point, determines the functional attributes of the soil associated with the buried pipe group based on the functional attributes of the heat pump, and sets a corresponding soil temperature threshold for the buried pipe group; and monitors the soil temperature value of the buried pipe group in real time. The condition for disconnection is that the soil temperature value does not meet the set soil temperature threshold. When the disconnection condition is triggered, the control point actively disconnects from the current heat pump. At the same time, from the heat pump group with different functional attributes from the disconnected heat pump, the heat pump with the largest temperature difference between the heat load demand temperature value and the current soil temperature value in the heat exchange sub-region is selected as the new connection object. A communication connection between the control point that triggered the disconnection and the communication port of the new connection object is established, thus creating a communication connection between the control point and the heat pump.

7. The method for dynamic control of distributed energy based on soil medium according to claim 1, characterized in that: The steps of obtaining the heat load demand temperature value and the corresponding operating data of the heat pumps for each heat exchange sub-region, adjusting the position of the control point in the control network based on the heat load demand temperature value and the operating data, and controlling the corresponding pipeline valves based on the position of the control point include: The water supply temperature setpoints for each heat exchange sub-region are acquired in real time as the heat load demand temperature values ​​for the heat pump; the soil temperature values ​​for each exchange zone of the heat pump are acquired in real time as the corresponding operating data for the heat pump. Based on the heat load demand temperature value corresponding to the heat pump and the operation data, adjust the connection objects of the control points in the control network and the location of the control points; Based on the binding relationship between the current control point position and the pipeline valve, a valve control signal corresponding to the current control command is generated, and the bound pipeline valve is controlled.

8. A distributed energy dynamic control system based on soil medium, applied to the distributed energy dynamic control method based on soil medium as described in any one of claims 1-7, characterized in that, include: The model building module is used to collect physical data of the underground pipeline site and build a regional model based on the physical data; Collect equipment data of heat pumps connected to buried pipe networks in various locations, and integrate the three-dimensional model of the heat pumps into the regional model to form a heat exchange model; The configuration module is used to configure a control network for each heat exchange sub-region in the heat exchange model and establish a communication connection between the control network and the heat pumps corresponding to each heat exchange sub-region. The control module is used to acquire the heat load demand temperature value of the heat pump corresponding to each heat exchange sub-region and the corresponding heat pump operation data. Based on the heat load demand temperature value and operation data, it adjusts the position of the control point in the control network through communication connection, and controls the corresponding pipeline valves based on the position of the control point.

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