Variable frequency air conditioner cluster regulation and control system and method based on privacy protection and distributed communication network

Abstract

The invention provides a variable frequency air conditioner cluster regulation and control system based on privacy protection and a distributed communication network, and the system comprises a model building module which is used for building an air conditioner comfort model, building an air conditioner operation model, and substituting the air conditioner comfort model into the air conditioner operation model to obtain an air conditioner regulation and control model, designing a mask function according to the encryption amplitude and the encryption offset; the communication masking module is used for masking the comfort level and the comfort level change rate according to a masking function and disclosing the masked comfort level and the masked comfort level change rate between adjacent air conditioners in the distributed communication network; and the air conditioner regulation and control module is used for controlling each air conditioner in the distributed communication network to adjust the actual power change rate of the air conditioner based on the masked comfort degree and the masked comfort degree change rate of the adjacent air conditioner of the air conditioner. According to the invention, on the premise of ensuring the privacy security of the user, accurate power grid power response and comfortable fair distribution are realized.

Description

Technical Field

[0001] This invention relates to the field of load privacy management technology, specifically to a variable frequency air conditioning cluster control system and method based on privacy protection and distributed communication networks. Background Technology

[0002] With increasingly severe environmental pollution and persistent power shortages, distributed renewable energy sources, such as photovoltaics and wind power, have been widely adopted. However, the inherent intermittency and randomness of distributed renewable energy sources pose significant challenges to the stable operation and precise control of the power grid. Against this backdrop, integrating flexible demand-side resources to provide grid ancillary services has become a key approach to improving the power system's regulation capabilities.

[0003] Among them, thermostatically controlled loads (TCL) demonstrate excellent practical power regulation potential. The primary purpose of these loads is to regulate the temperature within a comfortable range for users. Due to their thermal inertia, short-term power fluctuations have a relatively small impact on indoor temperature, making them ideal for grid interaction. In particular, air conditioning equipment, a typical representative of TCL, has over 1.6 billion units installed globally, constituting a large-scale, readily available, and flexible resource. However, the regulation capacity of a single air conditioner is limited; therefore, it is necessary to aggregate a large number of air conditioning units and design effective control strategies to meet the regulation requirements at the power system level.

[0004] Currently, centralized control of air conditioning clusters is the primary method, where a central controller directly regulates all air conditioning equipment. This approach has significant limitations when dealing with large-scale clusters, including computational bottlenecks, single-point-of-failure risks, and poor scalability. Research indicates that distributed coordination-based control strategies can significantly improve computational efficiency, avoid the vulnerabilities of centralized control structures, and are more suitable for geographically dispersed resource clusters. Furthermore, ensuring fairness in user comfort is crucial when using air conditioning clusters for ancillary services. Existing research largely focuses on power allocation ratios but fails to consider differences in user temperature sensitivity, meaning different users have varying tolerances for indoor temperature deviations. Therefore, introducing a "fair comfort sharing" mechanism—maintaining an equal ratio of actual temperature deviation to permissible deviation for each user—has become an important way to reflect user differences and achieve fair regulation.

[0005] It is worth noting that distributed control strategies rely on information exchange between devices, making privacy protection particularly critical. In recent years, frequent privacy breaches have posed a serious threat to distributed control strategies. Research shows that internal attackers may steal sensitive information such as active power and frequency to train external hostile systems and launch targeted cyberattacks, ultimately causing air conditioning cluster control to fail and resulting in significant economic losses. Furthermore, with the deep integration of cyber-physical systems, there are conflicts of interest among stakeholders within the cluster. For example, in distributed economic dispatch, power generation units need to collaborate and optimize while also wanting to hide their power generation costs and capabilities from their neighbors. These privacy concerns and cybersecurity issues will reduce users' willingness to share data and severely restrict the development of advanced communication and control applications.

[0006] In summary, the pressing technical challenges are: how to introduce a fair and comfortable temperature sharing mechanism during the control process to take into account the diverse temperature sensitivity needs of users; and how to ensure the security of user privacy data during distributed control to prevent sensitive information from being stolen or maliciously used, thereby improving system reliability and user participation. Summary of the Invention

[0007] The purpose of this invention is to address the shortcomings of existing technologies by providing a variable frequency air conditioning cluster control system based on privacy protection and a distributed communication network, comprising: The model building module is used to build an air conditioning comfort model based on the indoor temperature where the air conditioner is located and the user's expected temperature setting, and to build an air conditioning operation model based on the indoor temperature where the air conditioner is located and the actual power of the air conditioner. The air conditioning comfort model is substituted into the air conditioning operation model to obtain the air conditioning control model. The mask function is designed based on the encryption amplitude and encryption offset. The communication masking module is used to calculate the comfort level and comfort change rate of each air conditioner in the air conditioning cluster according to the air conditioning comfort model, mask the comfort level and comfort change rate according to the masking function, and expose the masked comfort level and masked comfort change rate between adjacent air conditioners in the distributed communication network. The air conditioning control module is used to control each air conditioner in the distributed communication network to adjust its actual power change rate based on the comfort level of its neighboring air conditioners after masking and the rate of change of the comfort level after masking, until the real-time comfort level of each air conditioner in the air conditioning cluster is the same and the current aggregated power of the air conditioning cluster is equal to the target aggregated power.

[0008] Furthermore, in the model building module, the air conditioning comfort model is specifically as follows: In the formula, air conditioning at time t Comfort air conditioning at time t Indoor temperature For air conditioning The user-set expected temperature, and air conditioners The upper and lower limits of the temperature range that users feel comfortable with. For air conditioning The temperature difference that users can accept above or below the expected temperature.

[0009] Furthermore, in the model building module, the air conditioning operation model is specifically as follows: In the formula, air conditioning at time t The actual power Let t be the outdoor ambient temperature. and air conditioners The heat capacity and thermal resistance.

[0010] Furthermore, in the model building module, the air conditioning control model is specifically as follows: In the formula, air conditioning at time t The rate of change in comfort, Through the air conditioning comfort model Differentiation yields, air conditioning at time t The second-order rate of change of comfort, By analyzing the air conditioning at time t Comfort variation rate Differentiating again, we get air conditioning at time t The actual power change rate, By analyzing the air conditioning at time t Differentiating yields the result.

[0011] Furthermore, in the model building module, the mask output function is as follows: in, It is related to air conditioning The set of output mask parameters, For air conditioning Data, The initial encryption amplitude gain, The decay rate of the encryption amplitude gain. The decay rate of the encryption offset, For the encryption offset magnitude, For air conditioning Data The mask output.

[0012] Furthermore, the mask output function satisfies the following properties: No. The calculation of the mask output of an air conditioner depends only on its own data. and its own set of mask parameters And data from any other air conditioner in the distributed communication network. Irrelevant; At the initial time t=0, for any data Its encrypted output value None of them equal itself; air conditioner mask output value This does not contain, imply, or disclose data of any neighboring air conditioner j in the distributed communication network. ; If time and mask parameter set If it is fixed, then the mask function The output value will change with its input. It increases monotonically with the increase of , as It decreases monotonically as it decreases; For any data Its mask output value The error between it and time The distance is getting smaller and smaller. .

[0013] Furthermore, air conditioning Actual power change rate The specific calculation method is as follows: In the formula, To adjust the aggregated power of the air conditioning cluster to the target aggregated power gain factor, the aggregator sends the deviation ∆Q(t) between the current aggregated power and the target aggregated power to some of the air conditioners via a distributed communication network. The air conditioners capable of receiving ∆Q(t)... The value is 1 if it is not 0 otherwise. For air conditioning It can receive the mark of ∆Q(t); It is a symbolic function; The parameters that affect the convergence speed of comfort are... The larger the size, the faster the comfort level decreases. Air conditioning in distributed communication networks and air conditioning The communication connection between them, if the air conditioner and air conditioning If a communication link exists, then =1, if air conditioner and air conditioning There is no communication link between them. =0; Air conditioning in distributed communication networks The total number of neighbors; For time t and air conditioning Adjacent air conditioners Comfort level after masking; For time t and air conditioning Adjacent air conditioners The rate of change in comfort after masking.

[0014] Furthermore, in the air conditioning control module, the specific method for controlling each air conditioner in the distributed communication network to adjust its actual power change rate based on the comfort level of its neighboring air conditioners after masking and the rate of change of the comfort level after masking is as follows: In a distributed communication network, each air conditioner receives masked comfort levels and masked comfort change rates from neighboring air conditioners. Based on its own comfort level and comfort change rate, it calculates the relative difference, controls its own power value by adjusting its own power change rate, and then adjusts its own comfort level and comfort change rate according to the air conditioner comfort model to reduce the relative difference.

[0015] A method for controlling a variable frequency air conditioning cluster based on privacy protection and a distributed communication network includes: An air conditioning comfort model is established based on the indoor temperature where the air conditioner is located and the user's expected temperature. An air conditioning operation model is established based on the indoor temperature where the air conditioner is located and the actual power of the air conditioner. The air conditioning comfort model is substituted into the air conditioning operation model to obtain the air conditioning control model. A mask function is designed based on the encryption amplitude and encryption offset. The comfort level and comfort change rate of each air conditioner in the air conditioning cluster are calculated based on the air conditioning comfort model. The comfort level and comfort change rate are masked according to the masking function. The masked comfort level and comfort change rate are then disclosed between adjacent air conditioners in the distributed communication network. Each air conditioner in the distributed communication network adjusts its actual power change rate based on the comfort level of its neighboring air conditioners after masking and the rate of change of the comfort level after masking, until the real-time comfort level of each air conditioner in the air conditioning cluster is the same and the current aggregated power of the air conditioning cluster is equal to the target aggregated power.

[0016] A computer program product includes a computer program / instructions that, when executed by a processor, implement the aforementioned variable frequency air conditioning cluster control method based on privacy protection and a distributed communication network.

[0017] The beneficial effects of this invention are as follows: 1. This invention achieves secure and reliable distributed collaborative control, completely avoiding the inherent defects of centralized control. Compared with traditional centralized control methods, this invention adopts a fully distributed control architecture. Each air conditioner only needs to exchange encrypted local information with adjacent devices to participate in global control, without relying on a central controller for all calculations and command distribution. This approach fundamentally eliminates the single-point failure risk and communication bottleneck problem caused by centralized control, greatly enhancing the system's reliability and robustness. Even if some nodes or communication links fail, the entire cluster can still maintain stable control functions through the remaining connected network, making it particularly suitable for the collaborative management of large-scale, geographically dispersed air conditioning clusters.

[0018] 2. While ensuring user privacy and security, this invention achieves precise grid power response and comfortable, fair power allocation. One of its core innovations lies in the introduction of a dynamic output masking mechanism with rigorous mathematical properties, successfully resolving the contradiction between information sharing and privacy protection in distributed control. During the initial and ongoing control phases, all comfort and rate-of-change data exchanged in the communication network are encrypted masked values, significantly different from the user's actual data. This effectively prevents malicious eavesdroppers from inferring sensitive privacy information such as user habits and temperature preferences by analyzing communication content. Thanks to the meticulously designed asymptotic convergence of the masking function, the encrypted data eventually approximates the true value infinitely, ensuring that the distributed control algorithm can asymptotically achieve the same control precision as unencrypted communication, thus enabling precise tracking of aggregated power.

[0019] 3. A quantitative "comfort" index is introduced to ensure differentiated user satisfaction. This invention abandons traditional strategies of simple power allocation or absolute temperature control, and innovatively defines a standardized comfort index. This index maps different users' varying temperature preferences and sensitivities to a comparable numerical range. The control objective aims to make all users' experiences consistent, meaning the system pursues relative, personalized fairness. Regardless of the user's set baseline temperature, their perceived "relative comfort level" is fair, thus significantly improving user participation and satisfaction while providing grid ancillary services, and resolving the control resistance problem caused by differences in user experience.

[0020] 4. The system boasts strong scalability and flexible deployment, laying the foundation for plug-and-play grid integration of large-scale flexible resources. Due to its distributed architecture, newly added air conditioning equipment only needs to be connected to the local communication network; no modifications to the central control algorithm or architecture are required to integrate it into the cluster and participate in regulation. This plug-and-play characteristic allows the system to easily scale to massive scales, making it highly suitable for future commercial operation models of virtual power plants (VPPs) and distributed energy aggregators. It provides a safe and efficient technical path for integrating massive amounts of flexible resources from across society to participate in grid interaction. Attached Figure Description

[0021] Figure 1 This is a system block diagram of the present invention.

[0022] Figure 2 This diagram illustrates malicious eavesdropping and an output masking mechanism in a distributed communication network.

[0023] Figure 3 A graph showing the total power data of the air conditioning cluster after coordinated control, taking privacy protection into account.

[0024] Figure 4 A comfort data graph of individual air conditioners after cluster coordinated control to consider privacy protection. Detailed Implementation

[0025] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0026] In the following text, aggregated power equals the sum of the actual power of all air conditioners in the air conditioning cluster.

[0027] Example 1 A variable frequency air conditioning cluster control system based on privacy protection and distributed communication network, referenced Figure 1 ,include: The model building module is used to build an air conditioning comfort model based on the indoor temperature where the air conditioner is located and the user's expected temperature setting, and to build an air conditioning operation model based on the indoor temperature where the air conditioner is located and the actual power of the air conditioner. The air conditioning comfort model is substituted into the air conditioning operation model to obtain the air conditioning control model. The mask function is designed based on the encryption amplitude and encryption offset. The communication masking module is used to calculate the comfort level and comfort change rate of each air conditioner in the air conditioning cluster according to the air conditioning comfort model, mask the comfort level and comfort change rate according to the masking function, and expose the masked comfort level and masked comfort change rate between adjacent air conditioners in the distributed communication network. The air conditioning control module is used to control each air conditioner in the distributed communication network to adjust its actual power change rate based on the comfort level of its neighboring air conditioners after masking and the rate of change of the comfort level after masking, until the real-time comfort level of each air conditioner in the air conditioning cluster is the same and the current aggregated power of the air conditioning cluster is equal to the target aggregated power.

[0028] The air conditioner involved in this invention must be a variable frequency air conditioner, whose power can be continuously controlled within the range of 0 to rated power.

[0029] like Figure 2 As shown, a graph is used to describe the distributed communication network involving air conditioners. Nodes in the graph represent air conditioning devices, and edges represent communication links in the network layer. Assume the distributed communication network is represented as... ,in and These represent sets of nodes and sets of communication links, respectively. Represents a node The adjacent nodes. The adjacency matrix is ​​represented as ,in .picture The Laplace matrix is ​​defined as in .picture A graph is called a connected graph if there is a path between any two air conditioners that are adjacent nodes. At least one air conditioner device in the graph can obtain the required actual power information.

[0030] (1) In the model building module, the air conditioning comfort model is as follows: In the formula, air conditioning at time t Comfort air conditioning at time t Indoor temperature For air conditioning The user-set expected temperature, and air conditioners The upper and lower limits of the temperature range that users feel comfortable with. For air conditioning The temperature difference that a user can accept above or below the expected temperature. In this embodiment, , .

[0031] This invention defines a quantitative formula for "comfort," the core effect of which is to transform users' subjective and diverse temperature preferences (e.g., some prefer 22°C, others prefer 25°C) into a standardized and comparable index x_i. This solves the problem mentioned in the background technology of "not considering differences in users' temperature sensitivity," providing a unified measurement benchmark and mathematical foundation for achieving "fair comfort sharing." The system no longer pursues consistency in absolute temperature values, but rather consistency in comfort indices, achieving true user fairness.

[0032] The specific operation model of the air conditioner is as follows: In the formula, air conditioning at time t The actual power Let t be the outdoor ambient temperature. and air conditioners The heat capacity and thermal resistance. In this embodiment, the parameters satisfy... , For all air conditioners, set... =32℃.

[0033] The air conditioning operation model establishes power The mathematical relationship between indoor and outdoor temperature difference and the rate of temperature change reveals the dynamic influence of the actual power of the air conditioner on indoor temperature. This provides a precise mathematical model of the controlled object for the entire control system, enabling subsequent controller design to be targeted and achieve refined and precise control of the actual power of the air conditioner, rather than blind on / off control.

[0034] By mathematically transforming the air conditioning comfort model and substituting it into the air conditioning operation model, we obtain: make As a constant, we get Furthermore, the air conditioning control model was obtained: In the formula, air conditioning at time t The rate of change in comfort, Through the air conditioning comfort model Differentiation yields, air conditioning at time t The second-order rate of change of comfort, By analyzing the air conditioning at time t Comfort variation rate Differentiating again, we get air conditioning at time t The actual power change rate, By analyzing the air conditioning at time t Differentiating yields the result.

[0035] The air conditioning control model successfully transforms the state variable of the control system from "temperature" to "comfort level." The resulting air conditioning control model is a standard form of controller in modern control theory, easy to analyze and design. This allows the controller to directly regulate the user's "comfort level," breaking down the barrier between "power adjustment" and "comfort perception," and is a key step in achieving synergistic optimization of dual objectives (power point tracking and comfort consistency).

[0036] In this embodiment, , .

[0037] (2) In the model building module, the mask output function is as follows: in, It is related to air conditioning The set of output mask parameters, For air conditioning Data, The initial encryption amplitude gain, The decay rate of the encryption amplitude gain. The decay rate of the encryption offset, For the encryption offset magnitude, For air conditioning Data The mask output.

[0038] The mask output function satisfies the following properties: No. The calculation of the mask output of an air conditioner depends only on its own data. and its own set of mask parameters And data from any other air conditioner in the distributed communication network. It's irrelevant. This is the fundamental premise of privacy protection. Its design eliminates the possibility of nodes unintentionally "leaking" neighbor information during encryption, ensuring data isolation at the source. If a mask function requires neighbor data for calculation, then it itself becomes a channel for privacy leakage.

[0039] At the initial time t=0, for any data Its encrypted output value None of them equal This ensures that privacy data is protected immediately and effectively from the outset of control. Attackers cannot obtain the true initial state of any device by intercepting initial communication packets, providing an initial security barrier for the system.

[0040] air conditioner mask output value This does not contain, imply, or disclose data of any neighboring air conditioner j in the distributed communication network. Even if node i knows some neighbor information before computation (which is necessary for collaborative control), the encrypted data it ultimately sends must be "clean" and not carry any neighbor privacy information, thus cutting off the path for privacy information to spread on the network.

[0041] If time and mask parameter set If it is fixed, then the mask function The output value will change with its input. It increases monotonically with the increase of , as The value decreases monotonically as it decreases. This is a crucial bridge connecting privacy protection and controllability. It ensures that the encrypted data maintains its sequential relationship with the original data. From a control perspective, although each air conditioner does not know the precise state of its neighbors, it can determine their relative size through the encrypted value (e.g., whether the neighbor is "more comfortable" or "less comfortable"), which is sufficient to support the consensus algorithm in making correct coordination decisions. From a privacy perspective, attackers can only know the trend of data changes, not its precise absolute value. This protects the most sensitive specific data while providing the information necessary for controllability.

[0042] For any data Its mask output value The error between it and time The distance is getting smaller and smaller. This is the core guarantee for ensuring ultimate control accuracy. It allows the system to achieve a perfect balance between "initial privacy and security" and "long-term control precision." Larger initial errors provide strong privacy protection. Long-term errors tend to zero, enabling the distributed controller to perform calculations based on increasingly accurate information, ultimately asymptotically achieving fully accurate collaborative control goals (consistent comfort, power point tracking).

[0043] (3) In the air conditioning control module, the specific method for controlling each air conditioner in the distributed communication network to adjust its actual power change rate based on the comfort level of its neighboring air conditioners after masking and the comfort change rate after masking is as follows: In a distributed communication network, each air conditioner receives masked comfort levels and masked comfort change rates from neighboring air conditioners. Based on its own comfort level and comfort change rate, it calculates the relative difference, adjusts its own power change rate to control its own power value, and further adjusts its own comfort level and comfort change rate according to the air conditioner comfort model to reduce the relative difference. Actual power change rate The specific calculation method is as follows: In the formula, To adjust the aggregated power of the air conditioning cluster to the target aggregated power gain factor, the aggregator sends the deviation ∆Q(t) between the current aggregated power and the target aggregated power to some of the air conditioners via a distributed communication network. The air conditioners capable of receiving ∆Q(t)... The value is 1 if it is not 0 otherwise. For air conditioning It can receive the mark of ∆Q(t); It is a symbolic function; The parameters that affect the convergence speed of comfort are... The larger the size, the faster the comfort level decreases. Air conditioning in distributed communication networks and air conditioning The communication connection between them, if the air conditioner and air conditioning If a communication link exists, then =1, if air conditioner and air conditioning There is no communication link between them. =0; Air conditioning in distributed communication networks The total number of neighbors; For time t and air conditioning Adjacent air conditioners Comfort level after masking; For time t and air conditioning Adjacent air conditioners The rate of change in comfort after masking.

[0044] For all air conditioners, the first 200 seconds are positive. The setting is 0, and the target power is set to 16kW. Set to 0.05, start at 200s, and set the target polymerization power to 18kW. It is a power tracking term that is positively correlated with the deviation of the current target power. It receives the global power deviation ΔQ(t) through some nodes and spreads it through the network. Its effect is to drive the total power of the entire cluster to track the grid dispatch command quickly and accurately. It is a comfort consistency item. By exchanging encrypted comfort data among neighbors, its effect is to drive the comfort of all users to be consistent, thereby achieving fairness.

[0045] make , , , After encrypting the information in the communication channel using an output mask, the total power of the air conditioning cluster is collected and measured, and compared with the rated power required by the power system. The results are as follows: Figure 3 As shown, compared to the first 200 seconds without a controller, after adding a controller at time 200, the air conditioning cluster's power reaches the reference power after approximately 50 seconds. After coordinated control, the comfort level of the air conditioning cluster is calculated. With the addition of the controller, the comfort levels of the air conditioners gradually become more consistent, achieving fair sharing of user satisfaction while protecting privacy. This distributed algorithm avoids dependence on a central controller, improves the system's scalability and robustness (no single point of failure), and perfectly integrates a privacy protection mechanism.

[0046] When measuring information in a communication channel, private information undergoes an output masking process, such as... Figure 4 As shown, private information cannot be inferred from the nodes, thus achieving privacy protection.

[0047] Example 2 A method for controlling a variable frequency air conditioning cluster based on privacy protection and a distributed communication network includes: An air conditioning comfort model is established based on the indoor temperature where the air conditioner is located and the user's expected temperature. An air conditioning operation model is established based on the indoor temperature where the air conditioner is located and the actual power of the air conditioner. The air conditioning comfort model is substituted into the air conditioning operation model to obtain the air conditioning control model. A mask function is designed based on the encryption amplitude and encryption offset. The comfort level and comfort change rate of each air conditioner in the air conditioning cluster are calculated based on the air conditioning comfort model. The comfort level and comfort change rate are masked according to the masking function. The masked comfort level and comfort change rate are then disclosed between adjacent air conditioners in the distributed communication network. Each air conditioner in the distributed communication network adjusts its actual power change rate based on the comfort level of its neighboring air conditioners after masking and the rate of change of the comfort level after masking, until the real-time comfort level of each air conditioner in the air conditioning cluster is the same and the current aggregated power of the air conditioning cluster is equal to the target aggregated power.

[0048] Example 3 A computer program product includes a computer program / instructions that, when executed by a processor, implement the variable frequency air conditioning cluster control method based on privacy protection and a distributed communication network as described in Embodiment 2.

[0049] The contents not described in detail in this specification are prior art known to those skilled in the art. Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0050] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0051] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0052] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit its scope of protection. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that after reading the present invention, they can still make various changes, modifications or equivalent substitutions to the specific implementation of the invention, but these changes, modifications or equivalent substitutions are all within the scope of protection of the pending claims of the invention.

Claims

1. A variable frequency air conditioning cluster control system based on privacy protection and a distributed communication network, characterized in that, include: The model building module is used to build an air conditioning comfort model based on the indoor temperature where the air conditioner is located and the user's expected temperature setting, and to build an air conditioning operation model based on the indoor temperature where the air conditioner is located and the actual power of the air conditioner. The air conditioning comfort model is substituted into the air conditioning operation model to obtain the air conditioning control model. The mask function is designed based on the encryption amplitude and encryption offset. The communication masking module is used to calculate the comfort level and comfort change rate of each air conditioner in the air conditioning cluster according to the air conditioning comfort model, mask the comfort level and comfort change rate according to the masking function, and expose the masked comfort level and masked comfort change rate between adjacent air conditioners in the distributed communication network. The air conditioning control module is used to control each air conditioner in the distributed communication network to adjust its actual power change rate based on the comfort level of its neighboring air conditioners after masking and the rate of change of the comfort level after masking, until the real-time comfort level of each air conditioner in the air conditioning cluster is the same and the current aggregated power of the air conditioning cluster is equal to the target aggregated power.

2. The variable frequency air conditioning cluster control system based on privacy protection and distributed communication network according to claim 1, characterized in that, In the model building module, the air conditioning comfort model is as follows: In the formula, Air conditioning at time t Comfort Air conditioning at time t Indoor temperature For air conditioning The user-set expected temperature, and air conditioners The upper and lower limits of the temperature range that users feel comfortable with. For air conditioning The temperature difference that users can accept above or below the expected temperature.

3. The variable frequency air conditioning cluster control system based on privacy protection and distributed communication network according to claim 2, characterized in that, In the model building module, the air conditioning operation model is as follows: In the formula, Air conditioning at time t The actual power Let t be the outdoor ambient temperature. and air conditioners The heat capacity and thermal resistance.

4. The variable frequency air conditioning cluster control system based on privacy protection and distributed communication network according to claim 3, characterized in that, In the model building module, the air conditioning control model is as follows: In the formula, Air conditioning at time t The rate of change in comfort, Through the air conditioning comfort model Differentiation yields, Air conditioning at time t The second-order rate of change of comfort, By analyzing the air conditioning at time t Comfort variation rate Differentiating again, we get Air conditioning at time t The actual power change rate, By analyzing the air conditioning at time t Differentiating yields the result.

5. The variable frequency air conditioning cluster control system based on privacy protection and distributed communication network according to claim 4, characterized in that, In the model building module, the mask output function is as follows: in, It is related to air conditioning The set of output mask parameters, For air conditioning Data, The initial encryption amplitude gain, The decay rate of the encryption amplitude gain. The decay rate of the encryption offset, For the encryption offset magnitude, For air conditioning Data The mask output.

6. The variable frequency air conditioning cluster control system based on privacy protection and distributed communication network according to claim 5, characterized in that, The mask output function satisfies the following properties: No. The calculation of the mask output of an air conditioner depends only on its own data. and its own set of mask parameters And data from any other air conditioner in the distributed communication network. Irrelevant; At the initial time t=0, for any data Its encrypted output value None of them equal itself; air conditioner mask output value This does not contain, imply, or disclose data of any neighboring air conditioner j in the distributed communication network. ; If time and mask parameter set If it is fixed, then the mask function The output value will change with its input. It increases monotonically with the increase of , as It decreases monotonically as it decreases; For any data Its mask output value The error between it and time The distance is getting smaller and smaller. .

7. The variable frequency air conditioning cluster control system based on privacy protection and distributed communication network according to claim 6, characterized in that, air conditioner Actual power change rate The specific calculation method is as follows: In the formula, To adjust the aggregated power of the air conditioning cluster to the target aggregated power gain factor, the aggregator sends the deviation ∆Q(t) between the current aggregated power and the target aggregated power to some of the air conditioners via a distributed communication network. The air conditioners capable of receiving ∆Q(t)... The value is 1 if it is not 0 otherwise. For air conditioning It can receive the mark of ∆Q(t); It is a symbolic function; The parameters that affect the convergence speed of comfort are... The larger the size, the faster the comfort level decreases. Air conditioning in distributed communication networks and air conditioning The communication connection between them, if the air conditioner and air conditioning If a communication link exists, then =1, if air conditioner and air conditioning There is no communication link between them. =0; Air conditioning in distributed communication networks The total number of neighbors; For time t and air conditioning Adjacent air conditioners Comfort after masking; For time t and air conditioning Adjacent air conditioners The rate of change in comfort after masking.

8. The variable frequency air conditioning cluster control system based on privacy protection and distributed communication network according to claim 1, characterized in that, In the air conditioning control module, the specific method for controlling each air conditioner in the distributed communication network to adjust its actual power change rate based on the comfort level after masking its adjacent air conditioners and the comfort change rate after masking is as follows: In a distributed communication network, each air conditioner receives masked comfort levels and masked comfort change rates from neighboring air conditioners. Based on its own comfort level and comfort change rate, it calculates the relative difference, controls its own power value by adjusting its own power change rate, and then adjusts its own comfort level and comfort change rate according to the air conditioner comfort model to reduce the relative difference.

9. A method for controlling a variable frequency air conditioning cluster based on privacy protection and a distributed communication network, characterized in that, include: An air conditioning comfort model is established based on the indoor temperature where the air conditioner is located and the user's expected temperature. An air conditioning operation model is established based on the indoor temperature where the air conditioner is located and the actual power of the air conditioner. The air conditioning comfort model is substituted into the air conditioning operation model to obtain the air conditioning control model. A mask function is designed based on the encryption amplitude and encryption offset. The comfort level and comfort change rate of each air conditioner in the air conditioning cluster are calculated based on the air conditioning comfort model. The comfort level and comfort change rate are masked according to the masking function. The masked comfort level and comfort change rate are then disclosed between adjacent air conditioners in the distributed communication network. Each air conditioner in the distributed communication network adjusts its actual power change rate based on the comfort level of its neighboring air conditioners after masking and the rate of change of the comfort level after masking, until the real-time comfort level of each air conditioner in the air conditioning cluster is the same and the current aggregated power of the air conditioning cluster is equal to the target aggregated power.

10. A computer program product comprising a computer program / instructions, characterized in that, When the computer program / instructions are executed by the processor, they implement the variable frequency air conditioning cluster control method based on privacy protection and distributed communication network as described in claim 9.

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