Control method and system for water source heat pump system

Abstract

The present invention discloses a control method and system for a water source heat pump system, and relates to the technical field of water source heat pump systems. The method of the present invention first monitors the operation and load of each heat pump unit, analyzes the working status, and when the operation is abnormal, starts the corresponding regulating device for adjustment. If it is still abnormal after the adjustment, the heat energy of the area corresponding to the abnormal heat pump unit is allocated to other normal heat pump units. The heat energy loss between the normal heat pump unit and the abnormal heat pump unit is used to select the normal heat pump unit to be allocated and calculate the allocated heat energy data. After the allocation, the normal heat pump unit is monitored, and then the allocation strategy is adjusted to ensure the safety and stability of the operation of the heat pump unit, reduce the loss of heat energy, and ensure that each area can be properly heated, thereby improving the comfort of users.

Description

Technical Field

[0001] The present invention relates to the technical field of water source heat pump systems, and in particular to a control method and system applied to water source heat pump systems. Background Art

[0002] A water source heat pump system is a heating and cooling system that uses water as a heat source or cold source. When a component in a water source heat pump system fails or the load is too large, heat energy can be distributed with water source heat pump systems in other areas to ensure that each area can receive appropriate heating and improve comfort.

[0003] In the prior art, the water temperature in the water source heat pump system is usually monitored and controlled. However, when the water source heat pump system is in operation, its operating data and load data can affect the working state of the water source heat pump system. The prior art lacks monitoring of the operating data and load data in the water source heat pump system, and then analyzing the working state of the water source heat pump system, and starting the corresponding regulating device to adjust the operation of the water source heat pump system. As a result, it is impossible to timely discover and adjust abnormal parameters of the water source heat pump system to ensure the stable operation of the water source heat pump system. It is also impossible to distribute the heat energy required in a region to the water source heat pump systems in other regions when a water source heat pump system is abnormal or overloaded, and it is impossible to ensure that each region can get proper heating, thereby reducing the comfort of users.

[0004] In addition, the prior art lacks the ability to screen out water source heat pump systems with lower losses and better operating conditions for distribution based on the heat losses of pipelines and parts when distributing heat energy, thereby failing to improve the operating effect and stability of other water source heat pump systems distributed to other systems, and failing to reduce heat loss, nor to provide guarantees for heating or cooling in each area, thereby reducing the working effect of the water source heat pump system; and after the heat energy is distributed, the distributed water source heat pump system is not monitored, and timely adjustments cannot be made when the water source heat pump system is operating abnormally, thereby reducing the operating safety and stability of the water source heat pump system. Summary of the invention

[0005] In view of the above-mentioned technical deficiencies, the object of the present invention is to provide a control method and system for a water source heat pump system.

[0006] To solve the above technical problems, the present invention adopts the following technical solutions: In the first aspect, the present invention provides a control method for a water source heat pump system, comprising the following steps: S1, monitoring the initial operation data and initial load data of each heat pump unit in the water source heat pump system within a set time period, and obtaining the required thermal energy data of the corresponding area of ​​each heat pump unit.

[0007] S2. Analyze the working status of each heat pump unit using the initial operation data and initial load data of each heat pump unit. When at least one heat pump unit has an abnormal working status, mark the heat pump units with abnormal working status as marked heat pump units, and start the regulating device in the control system to perform regulation.

[0008] S3. After the adjustment is completed, the operation data and load data of each marked heat pump unit are monitored again, and the demand heat energy data of the corresponding area of ​​each marked heat pump unit is extracted to analyze whether each marked heat pump unit is abnormal. When at least one marked heat pump unit is abnormal, the abnormal marked heat pump units are recorded as abnormal heat pump units, and corresponding abnormal operations are performed. At the same time, the non-abnormal heat pump units are recorded as normal heat pump units.

[0009] S4. Extract the required thermal energy data of the area corresponding to each abnormal heat pump unit, and simultaneously obtain the environmental data of each normal heat pump unit, confirm the heat allocation strategy of the area corresponding to each abnormal heat pump unit, and then control according to the heat allocation strategy of the area corresponding to each abnormal heat pump unit.

[0010] S5. After controlling the preset time, based on the heat allocation strategy of the area corresponding to each abnormal heat pump unit, obtain the first operation data and the first load data of each normal heat pump corresponding to each abnormal heat pump unit, and adjust the heat allocation strategy of the area corresponding to each abnormal heat pump unit.

[0011] In a second aspect, the present invention provides a control system applied to a water source heat pump system, comprising: a first monitoring module for monitoring the initial operation data and initial load data of each heat pump unit in the water source heat pump system within a set time period, and obtaining the required thermal energy data of the corresponding area of ​​each heat pump unit.

[0012] The first regulating module is used to analyze the working status of each heat pump unit by using the initial operation data and initial load data of each heat pump unit. When the working status of at least one heat pump unit is abnormal, each heat pump unit with abnormal working status is marked as a marked heat pump unit, and the regulating device in the control system is started to perform regulation.

[0013] The first analysis module is used to monitor the operation data and load data of each marked heat pump unit again after the adjustment is completed, and extract the demand heat energy data of the corresponding area of ​​each marked heat pump unit, and analyze whether each marked heat pump unit is abnormal. When at least one marked heat pump unit is abnormal, the abnormal marked heat pump units are recorded as abnormal heat pump units, and corresponding abnormal operations are performed. At the same time, the non-abnormal heat pump units are recorded as normal heat pump units.

[0014] The first allocation module is used to extract the required thermal energy data of the area corresponding to each abnormal heat pump unit, and at the same time obtain the environmental data of each normal heat pump unit, confirm the heat allocation strategy of the area corresponding to each abnormal heat pump unit, and then control it according to the heat allocation strategy of the area corresponding to each abnormal heat pump unit.

[0015] The second allocation module is used to control the preset time period, based on the heat allocation strategy of the area corresponding to each abnormal heat pump unit, obtain the first operation data and the first load data of each normal heat pump assigned to each abnormal heat pump unit, and adjust the heat allocation strategy of the area corresponding to each abnormal heat pump unit.

[0016] The beneficial effects of the present invention are as follows: the present invention provides a control method and system for a water source heat pump system, which first monitors the operation and load of each heat pump unit, analyzes the working status, and when the operation is abnormal, starts the corresponding regulating device for adjustment. If it is still abnormal after adjustment, the heat energy of the area corresponding to the abnormal heat pump unit is allocated to other normal heat pump units. The heat energy loss between the normal heat pump unit and the abnormal heat pump unit is used to select the normal heat pump unit to be allocated and calculate the allocated heat energy data. After the allocation, the normal heat pump unit is monitored, and then the allocation strategy is adjusted to ensure the safety and stability of the operation of the heat pump unit, reduce the loss of heat energy, and ensure that each area can get proper heating, thereby improving the comfort of the user. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 The present invention is a schematic flow chart of the steps for implementing the method.

[0019] Figure 2 It is a schematic diagram of the system structure connection of the present invention. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] See also Figure 1As shown, the control method applied to the water source heat pump system includes the following steps: S1, monitoring the initial operation data and initial load data of each heat pump unit in the water source heat pump system within a set time period, and obtaining the required thermal energy data of the corresponding area of ​​each heat pump unit.

[0022] In the above, the operation data includes power data flow data, including but not limited to voltage, current, evaporation pressure and condensation pressure; the load data includes heat data and temperature data, including but not limited to the heat provided per unit time, inlet and outlet water temperatures. The required heat data indicates the required heat data, and the heat data includes heat.

[0023] Each heat pump unit is provided with a number of sensors, including but not limited to voltage sensors, pressure sensors, temperature sensors and heat meter sensors, which collect the initial operation data and initial load data of each heat pump unit. At the same time, the control system is connected to the thermal energy management system to obtain the required thermal energy data of the corresponding area of ​​each heat pump unit from the thermal energy management system, where one heat pump unit corresponds to one area.

[0024] S2. Analyze the working status of each heat pump unit using the initial operation data and initial load data of each heat pump unit. When at least one heat pump unit has an abnormal working status, mark the heat pump units with abnormal working status as marked heat pump units, and start the regulating device in the control system to perform regulation.

[0025] In a specific embodiment, the specific process of analyzing the working status of each heat pump unit is as follows: obtaining the safe operation data interval and the safe load data interval of each heat pump unit from the control system, which are respectively recorded as and , g represents the number of each heat pump unit, g is a positive integer; the initial operation data and initial load data of each heat pump unit are recorded as and .

[0026] According to the expression: , get the working status analysis value of each heat pump unit , where the working status analysis value includes values ​​of 1 and 0. When the working status analysis value is 1, it indicates that the working status is normal. When the working status analysis value is 0, it indicates that the working status is abnormal.

[0027] In another specific embodiment, the adjustment device in the startup control system performs adjustment, and the specific process is as follows: a reference operation data interval and a reference load data interval corresponding to each abnormal type are obtained from the control system. If the initial operation data and the initial load data of a marked heat pump unit respectively belong to the reference operation data interval and the reference load data interval corresponding to a certain abnormal type, it indicates that the abnormal type is the abnormal type of the marked heat pump unit, thereby obtaining the abnormal type of each marked heat pump unit.

[0028] The abnormality type corresponding to the adjustment of each adjustment device is obtained from the control center, and the abnormality type of each marked heat pump unit is compared with the abnormality type corresponding to the adjustment of each adjustment device. If the abnormality type of a marked heat pump unit is the same as the abnormality type corresponding to the adjustment of a certain adjustment device, the adjustment device is used as the adjustment device required to be started by the control system of the marked heat pump unit, thereby obtaining the adjustment device required to be started for each marked heat pump unit; the control system starts the adjustment devices required to be started for each marked heat pump unit respectively, and adjusts each marked heat pump unit.

[0029] It should be noted that the regulating device includes a variable frequency drive and a regulating valve, etc., which are used to adjust the water flow rate and operating speed, etc.

[0030] S3. After the adjustment is completed, the operation data and load data of each marked heat pump unit are monitored again, and the demand heat energy data of the corresponding area of ​​each marked heat pump unit is extracted to analyze whether each marked heat pump unit is abnormal. When at least one marked heat pump unit is abnormal, the abnormal marked heat pump units are recorded as abnormal heat pump units, and corresponding abnormal operations are performed. At the same time, the non-abnormal heat pump units are recorded as normal heat pump units.

[0031] In a specific embodiment, the specific process of S3 is as follows: S3-1. Obtain the historical highest thermal energy data provided by each marked heat pump unit to the corresponding area from the heat pump work record of the control system as the maximum thermal energy data of each marked heat pump unit, and use the maximum thermal energy data of each marked heat pump unit, the required thermal energy data of the corresponding area, the operation data and the load data to calculate the abnormal analysis value of each marked heat pump unit, and the abnormal analysis value includes values ​​of 1 and 0; when the abnormal analysis value of a marked heat pump unit is 1, it indicates that the marked heat pump unit is successfully adjusted, and when the abnormal analysis value of a marked heat pump unit is 0, it indicates that the marked heat pump unit fails to be adjusted and the marked heat pump unit is abnormal, so as to analyze whether each marked heat pump unit is abnormal.

[0032] In the above, the abnormal analysis value of each marked heat pump unit is calculated. The specific process is as follows: the maximum heat energy data of each marked heat pump unit is subtracted from the required heat energy data of the region to obtain the heat energy data difference of each marked heat pump unit, which is recorded as , j represents the number of each marked heat pump unit, j is a positive integer, and the operation data and load data of each marked heat pump unit are recorded as and .

[0033] Substitute into the analysis formula , get the abnormal analysis value of the jth marked heat pump unit , where and They respectively represent the safe operation data interval and safe load data interval of the j-th marked heat pump unit.

[0034] S3-2. Each marked abnormal heat pump unit is recorded as an abnormal heat pump unit, and each non-abnormal heat pump unit is recorded as a normal heat pump unit, and the corresponding position of each abnormal heat pump unit is obtained from the control system, thereby displaying the corresponding position of each abnormal heat pump unit in the area map of the display, and the alarm issues an abnormal warning prompt.

[0035] S4. Extract the required thermal energy data of the area corresponding to each abnormal heat pump unit, and simultaneously obtain the environmental data of each normal heat pump unit, confirm the heat allocation strategy of the area corresponding to each abnormal heat pump unit, and then control according to the heat allocation strategy of the area corresponding to each abnormal heat pump unit.

[0036] In a specific embodiment, the heat distribution strategy for the area corresponding to each abnormal heat pump unit is confirmed, and the specific process is as follows: the historical highest heat energy data provided by each normal heat pump unit to the corresponding area is obtained from the heat pump operation record of the control system, which is recorded as the maximum heat energy data of each normal heat pump unit, recorded as , and extract the required heat energy data of the corresponding area of ​​each normal heat pump unit, recorded as , f represents the number of each normal heat pump unit, and f is a positive integer.

[0037] The environmental data corresponding to each normal heat pump unit is extracted, and the working capacity coefficient of each normal heat pump unit is analyzed according to the maximum heat energy data of each normal heat pump unit, the required heat energy data of the corresponding area, the initial operation data and the initial load data.

[0038] In the above, the working capacity coefficient of each normal heat pump unit is analyzed, and the specific process is as follows: the environmental data corresponding to the optimal operation of each normal heat pump unit is obtained from the control system, which is recorded as ; At the same time, the environmental data corresponding to each normal heat pump unit is recorded as .

[0039] The input power data is extracted from the initial operation data of each normal heat pump unit, the output heat data is extracted from the initial load data of each normal heat pump unit, and the ratio of the input and output heat data to the power data of each normal heat pump unit is used as the performance coefficient of each normal heat pump unit, which is recorded as ; Obtain the performance coefficient threshold corresponding to each normal heat pump unit from the control system, denoted as .

[0040] According to the analysis formula , and obtain the working capacity coefficient of the fth normal heat pump unit , where e represents a natural constant, , They respectively represent the proportionality coefficient of the set environmental data and the proportionality coefficient of the performance coefficient.

[0041] in, , The setting process is as follows: the difference of the environmental data corresponding to the optimal operation of each normal heat pump unit is calculated, and then the maximum environmental data difference and the minimum environmental data difference are selected and recorded as and ; Similarly, the maximum performance coefficient difference and the minimum performance coefficient difference are obtained, which are recorded as and , using the formula and , obtain the first difference rate s1 and the second difference rate s2; , The setting formula is: , .

[0042] By using the abnormal heat pump units and the normal heat pump units, the normal heat pump units to which the abnormal heat pump units can be heat-distributed are screened out, and then a heat distribution strategy for the area corresponding to each abnormal heat pump unit is formulated.

[0043] In the above, the formulation process of the heat distribution strategy for the area corresponding to each abnormal heat pump unit is as follows: the required pipe length and the number of accessories between each normal heat pump unit and each abnormal heat pump unit are obtained from the control center, and the loss coefficient of heat energy transmitted from each normal heat pump unit to each abnormal heat pump unit is calculated, which is recorded as , y represents the serial number of each abnormal heat pump unit, y is a positive integer, and the loss coefficient of heat energy transmitted from each normal heat pump unit to each abnormal heat pump unit is compared with a preset first loss coefficient threshold. If the loss coefficient of heat energy transmitted from a normal heat pump unit to an abnormal heat pump unit is less than the loss coefficient threshold, it indicates that the normal heat pump unit is the normal heat pump unit with heat distribution corresponding to the abnormal heat pump unit, so as to screen out the normal heat pump units with heat distribution corresponding to the abnormal heat pump units.

[0044] Among them, the first loss coefficient threshold represents the loss coefficient corresponding to when the loss is relatively small, and is discussed and set by multiple experts based on experience and historical data.

[0045] Preferably, the calculation process of the loss coefficient of heat energy transmitted from each normal heat pump unit to each abnormal heat pump unit is as follows: the required pipe length and the number of accessories between each normal heat pump unit and each abnormal heat pump unit are normalized, and their values ​​are taken and marked as and .

[0046] Select the maximum pipe length, minimum pipe length, maximum number of accessories and minimum number of accessories from the required pipe lengths and number of accessories between each normal heat pump unit and each abnormal heat pump unit, and then follow , The setting process sets the proportional coefficient of the pipe length and the proportional coefficient of the number of accessories, which are recorded as and , using the calculation formula , and obtain the loss coefficient of heat energy transmitted from each normal heat pump unit to each abnormal heat pump unit .

[0047] Pipes and fittings are usually made of metal or other heat-conducting materials, which will cause a certain amount of heat loss when transferring heat. Therefore, using the required pipe length and the number of fittings to calculate the loss coefficient of the transferred heat energy can reduce heat loss and cost during subsequent distribution.

[0048] The working capacity coefficient of each normal heat pump unit corresponding to the heat distribution of each abnormal heat pump unit is recorded as At the same time, obtain the heat energy loss value corresponding to the unit loss coefficient from the control system, record it as k, and substitute it into the distribution formula , get the heat data corresponding to the fth normal heat pump unit that can be allocated to the yth abnormal heat pump unit , where x represents the number of normal heat pump units, Represents the demand thermal energy data of the area corresponding to the yth abnormal heat pump unit.

[0049] The heat data corresponding to each normal heat pump unit to which each abnormal heat pump unit can allocate heat is used as a heat allocation strategy for the area corresponding to each abnormal heat pump unit.

[0050] S5. After controlling the preset time, based on the heat allocation strategy of the area corresponding to each abnormal heat pump unit, obtain the first operation data and the first load data of each normal heat pump corresponding to each abnormal heat pump unit, and adjust the heat allocation strategy of the area corresponding to each abnormal heat pump unit.

[0051] The preset duration is set by the engineer and can be 1 hour or 2 hours.

[0052] It should be noted that the first operating data and the first load data represent operating data and load data of a normal heat pump after distributing heat for a preset period of time according to the heat distribution strategy.

[0053] In a specific embodiment, the heat allocation strategy for the area corresponding to each abnormal heat pump unit is adjusted, and the specific process is as follows: obtaining the working status of each normal heat pump corresponding to each abnormal heat pump unit, screening out each secondary abnormal heat pump unit and each corresponding secondary normal heat pump unit; then adding secondary normal heat pumps and adjusting the heat data corresponding to the secondary normal heat pump unit, so as to adjust the heat allocation strategy for the area corresponding to each abnormal heat pump unit.

[0054] The first operation data and the first load data of the normal heat pumps corresponding to the abnormal heat pump units are analyzed according to the working state analysis process of the heat pump units in S2, and the working states of the normal heat pumps corresponding to the abnormal heat pump units are analyzed. The abnormal heat pump units with at least one normal heat pump having an abnormal working state are recorded as secondary abnormal heat pump units, and the normal heat pump units corresponding to the secondary abnormal heat pump units with normal working states are recorded as secondary normal heat pump units, thereby screening out the secondary abnormal heat pump units and the corresponding secondary normal heat pump units.

[0055] In the above, the increase of secondary normal heat pumps and the adjustment of the corresponding allocated heat data of the secondary normal heat pump units, the specific process is as follows: obtain the distributable thermal energy data of the secondary normal heat pumps corresponding to each secondary abnormal heat pump unit and the demand thermal energy data of the corresponding area of ​​each secondary abnormal heat pump unit, analyze the adjustment type corresponding to each secondary abnormal heat pump unit, the adjustment type includes one type of adjustment and two types of adjustment, and then make adjustments separately.

[0056] Preferably, the specific process of the first type of adjustment and the second type of adjustment is as follows: the maximum thermal energy data of each secondary normal heat pump unit corresponding to each secondary abnormal heat pump unit is subtracted from the demand thermal energy data, and then accumulated to obtain the distributable thermal energy data of the secondary normal heat pump corresponding to each secondary abnormal heat pump unit, and the distributable thermal energy data of the secondary normal heat pump corresponding to each secondary abnormal heat pump unit is compared with the demand thermal energy data of the corresponding area of ​​each secondary abnormal heat pump unit. If the distributable thermal energy data of the secondary normal heat pump unit corresponding to a certain secondary abnormal heat pump unit is less than or equal to the demand thermal energy data and the total value of thermal energy loss of the corresponding area, then the secondary abnormal heat pump unit needs to add a secondary normal heat pump unit, and adjust the corresponding thermal energy data of each secondary normal heat pump unit, and it is recorded as the first type of adjustment; otherwise, the secondary abnormal heat pump unit only needs to adjust the corresponding thermal energy data of each secondary normal heat pump unit, and it is recorded as the second type of adjustment.

[0057] It should be noted that the total heat energy loss value is equal to the value obtained by multiplying the heat energy loss value of each secondary normal heat pump by the heat energy loss value and then adding them together.

[0058] One type of adjustment: Count the loss coefficients of heat energy transmitted from each secondary normal heat pump unit to each abnormal heat pump unit, and compare them with the preset second loss coefficient threshold. Then, screen out the secondary normal heat pump units that can be heat allocated to each abnormal heat pump unit, extract the working capacity coefficients of the secondary normal heat pump units that can be heat allocated to each abnormal heat pump unit, and calculate the corresponding allocated heat data of each secondary normal heat pump unit that can be heat allocated to each abnormal heat pump unit.

[0059] Among them, the second loss coefficient threshold represents the loss coefficient corresponding to moderate loss, which is discussed and set by multiple experts based on experience and historical data.

[0060] The second type of adjustment: extract the working capacity coefficient of each secondary normal heat pump unit that can distribute heat to each abnormal heat pump unit, and calculate the corresponding allocated heat data of each secondary normal heat pump unit that can distribute heat to each abnormal heat pump unit.

[0061] It should be noted that the screening process of each secondary normal heat pump unit to which heat can be allocated corresponding to each abnormal heat pump unit is the same as the screening process of each normal heat pump unit to which heat can be allocated corresponding to each abnormal heat pump unit; the calculation method of the allocated heat data corresponding to each secondary normal heat pump unit to which heat can be allocated corresponding to each abnormal heat pump unit is the same as the calculation method of the allocated heat data corresponding to the fth normal heat pump unit to which heat can be allocated corresponding to the yth abnormal heat pump unit, which will not be repeated here.

[0062] See also Figure 2As shown, the control system applied to the water source heat pump system includes: a first monitoring module, which is used to monitor the initial operation data and initial load data of each heat pump unit in the water source heat pump system within a set time period, and at the same time obtain the required thermal energy data of the corresponding area of ​​each heat pump unit.

[0063] The first regulating module is used to analyze the working status of each heat pump unit by using the initial operation data and initial load data of each heat pump unit. When the working status of at least one heat pump unit is abnormal, each heat pump unit with abnormal working status is marked as a marked heat pump unit, and the regulating device in the control system is started to perform regulation.

[0064] The first analysis module is used to monitor the operation data and load data of each marked heat pump unit again after the adjustment is completed, and extract the demand heat energy data of the corresponding area of ​​each marked heat pump unit, and analyze whether each marked heat pump unit is abnormal. When at least one marked heat pump unit is abnormal, the abnormal marked heat pump units are recorded as abnormal heat pump units, and corresponding abnormal operations are performed. At the same time, the non-abnormal heat pump units are recorded as normal heat pump units.

[0065] The first allocation module is used to extract the required thermal energy data of the area corresponding to each abnormal heat pump unit, and at the same time obtain the environmental data of each normal heat pump unit, confirm the heat allocation strategy of the area corresponding to each abnormal heat pump unit, and then control it according to the heat allocation strategy of the area corresponding to each abnormal heat pump unit.

[0066] The second allocation module is used to control the preset time period, based on the heat allocation strategy of the area corresponding to each abnormal heat pump unit, obtain the first operation data and the first load data of each normal heat pump corresponding to each abnormal heat pump unit, and adjust the heat allocation strategy of the area corresponding to each abnormal heat pump unit.

[0067] The embodiment of the present invention first monitors the operation and load of each heat pump unit, analyzes the working status, and when the operation is abnormal, starts the corresponding regulating device for adjustment. If it is still abnormal after adjustment, the heat energy of the area corresponding to the abnormal heat pump unit is allocated to other normal heat pump units. The heat energy loss between the normal heat pump unit and the abnormal heat pump unit is used to select the normal heat pump unit to be allocated and calculate the allocated heat energy data. After the allocation, the normal heat pump unit is monitored, and then the allocation strategy is adjusted to ensure the safety and stability of the operation of the heat pump unit, reduce the loss of heat energy, ensure that each area can get proper heating, and thus improve the comfort of users.

[0068] The above contents are merely examples and explanations of the concept of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the concept of the invention or exceed the scope defined in this specification, they shall all fall within the protection scope of the present invention.

Claims

1. A control method applied to a water source heat pump system, characterized in that: The steps include: S1. Monitor the initial operation data and initial load data of each heat pump unit in the water source heat pump system within a set period of time, and obtain the required thermal energy data of the corresponding area of ​​each heat pump unit; S2. Analyze the working state of each heat pump unit by using the initial operation data and initial load data of each heat pump unit. When at least one heat pump unit has an abnormal working state, mark each heat pump unit with an abnormal working state as a marked heat pump unit, and start the regulating device in the control system to perform regulation. S3. After the adjustment is completed, the operation data and load data of each marked heat pump unit are monitored again, and the required heat energy data of the corresponding area of ​​each marked heat pump unit are extracted to analyze whether each marked heat pump unit is abnormal. When at least one marked heat pump unit is abnormal, the abnormal marked heat pump units are recorded as abnormal heat pump units, and corresponding abnormal operations are performed, and at the same time, the non-abnormal heat pump units are recorded as normal heat pump units; S4, extracting the required heat energy data of the area corresponding to each abnormal heat pump unit, and obtaining the environmental data of each normal heat pump unit at the same time, confirming the heat allocation strategy of the area corresponding to each abnormal heat pump unit, and then controlling according to the heat allocation strategy of the area corresponding to each abnormal heat pump unit; S5. After controlling the preset time, based on the heat allocation strategy of the area corresponding to each abnormal heat pump unit, obtain the first operation data and the first load data of each normal heat pump corresponding to each abnormal heat pump unit, and adjust the heat allocation strategy of the area corresponding to each abnormal heat pump unit.

2. The control method for a water source heat pump system according to claim 1, characterized in that: The specific process of analyzing the working status of each heat pump unit is as follows: The safe operation data interval and safe load data interval of each heat pump unit are obtained from the control system and recorded as and , g represents the number of each heat pump unit, g is a positive integer; the initial operation data and initial load data of each heat pump unit are recorded as and ; According to the expression: , get the working status analysis value of each heat pump unit , where the working status analysis value includes values ​​of 1 and 0. When the working status analysis value is 1, it indicates that the working status is normal. When the working status analysis value is 0, it indicates that the working status is abnormal.

3. The control method for a water source heat pump system according to claim 1, characterized in that: The regulating device in the start control system is adjusted, and the specific process is as follows: Obtaining reference operation data intervals and reference load data intervals corresponding to each abnormality type from the control system; if the initial operation data and initial load data of a marked heat pump unit respectively belong to the reference operation data interval and reference load data interval corresponding to a certain abnormality type, it indicates that the abnormality type is the abnormality type of the marked heat pump unit, thereby obtaining the abnormality type of each marked heat pump unit; Obtain the abnormality type corresponding to each regulating device from the control center, compare the abnormality type of each marked heat pump unit with the abnormality type corresponding to each regulating device, if the abnormality type of a marked heat pump unit is the same as the abnormality type corresponding to a certain regulating device, then use the regulating device as the regulating device required to be started by the control system of the marked heat pump unit, thereby obtaining the regulating device required to be started by each marked heat pump unit; The control system respectively starts the regulating devices required to be started for each marked heat pump unit, and regulates each marked heat pump unit.

4. The control method for a water source heat pump system according to claim 1, characterized in that: The specific process of S3 is as follows: S3-1. Obtain the highest historical heat energy data provided by each marked heat pump unit to the corresponding area from the heat pump work record of the control system as the maximum heat energy data of each marked heat pump unit. Calculate the abnormal analysis value of each marked heat pump unit using the maximum heat energy data of each marked heat pump unit, the required heat energy data of the corresponding area, the operation data and the load data. The abnormal analysis value includes the values ​​of 1 and 0. When the abnormal analysis value of a marked heat pump unit is 1, it indicates that the marked heat pump unit is successfully adjusted. When the abnormal analysis value of a marked heat pump unit is 0, it indicates that the marked heat pump unit fails to be adjusted and the marked heat pump unit is abnormal. In this way, it is analyzed whether each marked heat pump unit is abnormal. S3-2. Each marked abnormal heat pump unit is recorded as an abnormal heat pump unit, and each non-abnormal heat pump unit is recorded as a normal heat pump unit, and the corresponding position of each abnormal heat pump unit is obtained from the control system, thereby displaying the corresponding position of each abnormal heat pump unit in the area map of the display, and the alarm issues an abnormal warning prompt.

5. The control method for a water source heat pump system according to claim 1, characterized in that: The specific process of confirming the heat distribution strategy for the area corresponding to each abnormal heat pump unit is as follows: The highest historical heat energy data provided by each normal heat pump unit to the corresponding area is obtained from the heat pump operation record of the control system, which is recorded as the maximum heat energy data of each normal heat pump unit, recorded as , and extract the required heat energy data of the corresponding area of ​​each normal heat pump unit, recorded as , f represents the number of each normal heat pump unit, and f is a positive integer; Extract the environmental data corresponding to each normal heat pump unit, and analyze the working capacity coefficient of each normal heat pump unit according to the maximum heat energy data of each normal heat pump unit, the required heat energy data of the corresponding area, the initial operation data and the initial load data; By using the abnormal heat pump units and the normal heat pump units, the normal heat pump units to which the abnormal heat pump units can be heat-distributed are screened out, and then a heat distribution strategy for the area corresponding to each abnormal heat pump unit is formulated.

6. The control method for a water source heat pump system according to claim 5, characterized in that: The specific process of analyzing the working capacity coefficient of each normal heat pump unit is as follows: Obtain the optimal operating environment data of each normal heat pump unit from the control system, recorded as ; At the same time, the environmental data corresponding to each normal heat pump unit is recorded as ; The input power data is extracted from the initial operation data of each normal heat pump unit, the output heat data is extracted from the initial load data of each normal heat pump unit, and the ratio of the input and output heat data to the power data of each normal heat pump unit is used as the performance coefficient of each normal heat pump unit, which is recorded as ; Obtain the performance coefficient threshold corresponding to each normal heat pump unit from the control system, denoted as ; According to the analysis formula , get the working capacity coefficient of the fth normal heat pump unit , where e represents a natural constant, , They respectively represent the proportionality coefficient of the set environmental data and the proportionality coefficient of the performance coefficient.

7. The control method for a water source heat pump system according to claim 5, characterized in that: The process of formulating the heat distribution strategy for the area corresponding to each abnormal heat pump unit is as follows: Obtain the required pipe length and number of fittings between each normal heat pump unit and each abnormal heat pump unit from the control center, and calculate the loss coefficient of heat energy transmitted from each normal heat pump unit to each abnormal heat pump unit, which is recorded as , y represents the serial number of each abnormal heat pump unit, y is a positive integer, and the loss coefficient of heat energy transmitted from each normal heat pump unit to each abnormal heat pump unit is compared with a preset first loss coefficient threshold. If the loss coefficient of heat energy transmitted from a normal heat pump unit to an abnormal heat pump unit is less than the loss coefficient threshold, it indicates that the normal heat pump unit is a normal heat pump unit that can be heat-distributed to the abnormal heat pump unit, thereby screening out the normal heat pump units that can be heat-distributed to the abnormal heat pump units; The working capacity coefficient of each normal heat pump unit corresponding to the heat distribution of each abnormal heat pump unit is recorded as At the same time, obtain the heat energy loss value corresponding to the unit loss coefficient from the control system, record it as k, and substitute it into the distribution formula , get the heat data corresponding to the fth normal heat pump unit that can be allocated to the yth abnormal heat pump unit , where x represents the number of normal heat pump units, represents the required heat energy data of the area corresponding to the yth abnormal heat pump unit; The heat data corresponding to each normal heat pump unit to which each abnormal heat pump unit can allocate heat is used as a heat allocation strategy for the area corresponding to each abnormal heat pump unit.

8. The control method for a water source heat pump system according to claim 5, characterized in that: The specific process of adjusting the heat distribution strategy for the area corresponding to each abnormal heat pump unit is as follows: Obtain the working status of each normal heat pump corresponding to each abnormal heat pump unit, and filter out each secondary abnormal heat pump unit and each corresponding secondary normal heat pump unit; Then, the secondary normal heat pump is added and the corresponding allocated heat data of the secondary normal heat pump unit is adjusted, so as to adjust the heat allocation strategy of the corresponding area of ​​each abnormal heat pump unit.

9. The control method for a water source heat pump system according to claim 8, characterized in that: The specific process of adding the secondary normal heat pump and adjusting the heat data corresponding to the secondary normal heat pump unit is as follows: Obtain the distributable thermal energy data of the secondary normal heat pumps corresponding to each secondary abnormal heat pump unit and the required thermal energy data of the corresponding area of ​​each secondary abnormal heat pump unit, analyze the adjustment type corresponding to each secondary abnormal heat pump unit, the adjustment type includes one type of adjustment and two types of adjustment, and then make adjustments separately.

10. A system for executing the control method for a water source heat pump system according to any one of claims 1 to 9, characterized in that: include: The first monitoring module is used to monitor the initial operation data and initial load data of each heat pump unit in the water source heat pump system within a set period of time, and simultaneously obtain the required thermal energy data of the corresponding area of ​​each heat pump unit; A first regulating module is used to analyze the working state of each heat pump unit by using the initial operation data and initial load data of each heat pump unit, and when at least one heat pump unit has an abnormal working state, the heat pump units with abnormal working states are marked as marked heat pump units, and the regulating device in the control system is started to perform regulation; The first analysis module is used to monitor the operation data and load data of each marked heat pump unit again after the adjustment is completed, and extract the required heat energy data of the corresponding area of ​​each marked heat pump unit, and analyze whether each marked heat pump unit is abnormal. When at least one marked heat pump unit is abnormal, the abnormal marked heat pump units are recorded as abnormal heat pump units, and corresponding abnormal operations are performed, and at the same time, the non-abnormal heat pump units are recorded as normal heat pump units; The first allocation module is used to extract the required heat energy data of the area corresponding to each abnormal heat pump unit, and at the same time obtain the environmental data of each normal heat pump unit, confirm the heat allocation strategy of the area corresponding to each abnormal heat pump unit, and then control according to the heat allocation strategy of the area corresponding to each abnormal heat pump unit; The second allocation module is used to control the preset time period, based on the heat allocation strategy of the area corresponding to each abnormal heat pump unit, obtain the first operation data and the first load data of each normal heat pump assigned to each abnormal heat pump unit, and adjust the heat allocation strategy of the area corresponding to each abnormal heat pump unit.

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