Power grid system demand response control method, device and equipment for improving resilience

Abstract

The present application provides a method, device and equipment for demand response control of a power grid system for improving resilience, and relates to the technical field of power systems. A first adjustment is performed on the power consumption of the demand-side load resources in the power grid system; a first adjustment deviation of the power consumption of the demand-side load resources after the first adjustment is determined; if the first adjustment deviation is greater than a preset power deviation threshold, a second adjustment is performed on the power consumption of the demand-side load resources according to a preset power state condition, so that the power state of the demand-side load resources after the second adjustment meets the preset power state condition; a second adjustment deviation of the power consumption of the demand-side load resources after the second adjustment is determined; if the second adjustment deviation is still greater than the preset power deviation threshold, a second adjustment is performed again on the power consumption of the demand-side load resources according to the preset power state condition, until the second adjustment deviation is less than or equal to the preset power deviation threshold. Thus, the resilience of the demand response control of the power grid system is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of power systems, and in particular to a method, device and equipment for demand response control of a power grid system for improving resilience. Background Art

[0002] In the power sector, renewable energy generation is being widely promoted. However, this intermittent and uncertain nature of renewable energy generation has led to increased short-term power fluctuations in the power grid. To ensure real-time power balance between supply and demand in the power system, demand-side resources are widely used to provide ancillary services such as frequency regulation and operational backup to the grid. This is known as demand response. Demand response is a crucial component in ensuring the safe and stable operation of the power system.

[0003] Existing technologies have been used to achieve real-time power balance between the supply and demand sides of power systems by controlling the power output of the power grid system. However, the control results are poorly accurate, with significant differences in control results across multiple demand sides, making it difficult to accurately achieve control requirements. Summary of the Invention

[0004] The purpose of the present invention is to address the deficiencies in the above-mentioned prior art. This application provides a method, device and equipment for demand response control of a power grid system for improving resilience, so as to solve problems such as the difficulty in accurately realizing control requirements in the prior art.

[0005] To achieve the above objectives, the technical solutions adopted in the embodiments of the present application are as follows:

[0006] In a first aspect, an embodiment of the present application provides a method for controlling demand response of a power grid system for improving resilience, the method comprising:

[0007] Performing a first adjustment on the power consumption of the demand-side load resource in the power grid system;

[0008] determining a first adjustment deviation of the power consumption of the demand-side load resource after the first adjustment;

[0009] If the first adjustment deviation is greater than a preset power deviation threshold, performing a second adjustment on the power consumption of the demand-side load resource according to a preset power state condition, so that the power state of the demand-side load resource after the second adjustment meets the preset power state condition;

[0010] determining a second adjustment deviation of the power consumption of the demand-side load resource after the second adjustment;

[0011] If the second adjustment deviation is still greater than the preset power deviation threshold, the power consumption of the demand side load resource is re-adjusted for the second time according to the preset power state condition, so that the power state of the demand side load resource meets the preset power state condition after the second adjustment, until the second adjustment deviation is less than or equal to the preset power deviation threshold.

[0012] Optionally, determining a first adjustment deviation of the power consumption of the demand-side load resource after the first adjustment includes:

[0013] Determining a first power difference between power consumption of the demand-side load resource before and after the first adjustment;

[0014] The first regulation deviation is calculated according to the target regulation power value of the power grid system and the first power difference.

[0015] Optionally, determining a second adjustment deviation of the power consumption of the demand-side load resource after the second adjustment includes:

[0016] Determining a second power difference between the power consumed by the demand-side load resource before and after the second adjustment;

[0017] The second adjustment deviation is calculated according to the target adjustment power value and the second power difference.

[0018] Optionally, the first adjusting the power consumption of the demand-side load resources in the power grid system includes:

[0019] Determining the target regulated power value according to the dispatch instruction of the power grid system;

[0020] A first adjustment is performed on the power consumption of the demand-side load resource according to the target adjustment power value.

[0021] Optionally, the preset power state condition includes: a reference ratio of a target power state, the reference ratio being a target ratio of the consumed power and the rated power of the demand-side load resource;

[0022] The second adjustment of the power consumption of the demand-side load resource according to the preset power state condition so that the power state of the demand-side load resource meets the preset power state condition after the second adjustment includes:

[0023] According to the reference ratio, a second adjustment is performed on the power consumption of the demand-side load resource so that after the second adjustment, the ratio of the power consumption and rated power of the demand-side load resource reaches the reference ratio and is in the target power state.

[0024] Optionally, performing a second adjustment on the power consumption of the demand-side load resource according to the reference ratio includes:

[0025] Calculating a control amount of power consumption of the power grid system for the demand-side load resource according to the reference ratio, the power state ratio of the demand-side load resource, and the power state ratios of adjacent load resources of the demand-side load resource;

[0026] A second adjustment is performed on the power consumption of the demand-side load resource according to the control amount of the power grid system for the power consumption of the demand-side load resource, wherein the adjacent load resource is a load resource connected to the demand-side load resource.

[0027] Optionally, the performing a second adjustment on the power consumption of the demand-side load resource according to the reference ratio further includes:

[0028] Calculating a controlled amount of power consumption of the plurality of demand-side load resources of the power grid system according to the reference ratio, the pull matrix of the plurality of demand-side load resources, and the pin connection matrix;

[0029] A second adjustment is performed on the power consumption of the plurality of demand-side load resources according to the controlled amount of power consumption of the plurality of demand-side load resources in the power grid system.

[0030] Optionally, the calculating, based on the reference ratio, the pull matrix and the pin connection matrix of the plurality of demand-side load resources, the controlled amount of power consumption of the plurality of demand-side load resources of the power grid system includes:

[0031] Calculating a controlled amount of power consumption of the plurality of demand-side load resources of the power grid system according to the reference ratio, the attack vector, the pull matrix and the pin connection matrix of the plurality of demand-side load resources;

[0032] The attack vector is a vector composed of multiple attack data for different demand-side load resources.

[0033] In a second aspect, an embodiment of the present application provides a power grid system demand response control device for improving resilience, the device comprising:

[0034] A first regulating module, configured to perform a first regulation on the power consumption of the demand-side load resources in the power grid system;

[0035] A first determining module, configured to determine a first adjustment deviation of the power consumption of the demand-side load resource after the first adjustment;

[0036] a second adjustment module, configured to, if the first adjustment deviation is greater than a preset power deviation threshold, perform a second adjustment on the power consumption of the demand-side load resource according to a preset power state condition, so that the power state of the demand-side load resource meets the preset power state condition after the second adjustment;

[0037] A second determining module is used to determine a second adjustment deviation of the power consumption of the demand-side load resource after the second adjustment;

[0038] The second adjustment module is also used to re-adjust the power consumption of the demand-side load resource for a second time according to the preset power state condition if the second adjustment deviation is still greater than the preset power deviation threshold, so that the power state of the demand-side load resource meets the preset power state condition after the second adjustment, until the second adjustment deviation is less than or equal to the preset power deviation threshold.

[0039] In a third aspect, an embodiment of the present application provides a control device, comprising: a processor and a storage medium, wherein the processor and the storage medium are communicatively connected via a bus, the storage medium stores program instructions executable by the processor, and the processor calls the program stored in the storage medium to execute the steps of the power grid system demand response control method for resilience improvement as described in any one of the first aspects.

[0040] Compared with the prior art, this application has the following beneficial effects:

[0041] The present application provides a method, device and equipment for demand response control of a power grid system for improving resilience. The method performs a first adjustment on the power consumption of the demand-side load resources in the power grid system; determines a first adjustment deviation of the power consumption of the demand-side load resources after the first adjustment; if the first adjustment deviation is greater than a preset power deviation threshold, then, according to a preset power state condition, performs a second adjustment on the power consumption of the demand-side load resources, so that the power state of the demand-side load resources after the second adjustment meets the preset power state condition; determines a second adjustment deviation of the power consumption of the demand-side load resources after the second adjustment; if the second adjustment deviation is still greater than the preset power deviation threshold, then, according to the preset power state condition, re-adjusts the power consumption of the demand-side load resources for a second time, so that the power state of the demand-side load resources after the second adjustment meets the preset power state condition, until the second adjustment deviation is less than or equal to the preset power deviation threshold. Thus, the power consumption of the demand-side load resources in the power grid system is accurately controlled, and the resilience of the demand response control of the power grid system is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0043] Figure 1 A flowchart of a power grid system demand response control method for improving resilience provided in this application;

[0044] Figure 2 A flowchart of a method for calculating a first adjustment deviation provided in this application;

[0045] Figure 3 A flowchart of a method for calculating a second adjustment deviation provided in this application;

[0046] Figure 4 A flowchart of a method for first adjusting power consumption provided by the present application;

[0047] Figure 5 A flowchart of a method for performing a second adjustment on power consumption provided by the present application;

[0048] Figure 6 A flowchart of another method for performing a second adjustment on power consumption provided by the present application;

[0049] Figure 7 This is a control effect diagram of the traditional power grid system;

[0050] Figure 8 The effect diagram of the demand response control of the power grid system for improving resilience provided in this application;

[0051] Figure 9 A schematic diagram of a power grid system demand response control device for improving resilience provided in an embodiment of the present application;

[0052] Figure 10 A schematic diagram of a control device provided in an embodiment of the present application.

[0053] Icons: 901 - first adjustment module, 902 - first determination module, 903 - second adjustment module, 904 - second determination module, 1001 - processor, 1002 - storage medium. DETAILED DESCRIPTION

[0054] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of 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. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0055] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0056] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0057] In addition, the terms "first", "second", etc., if used, are merely used to distinguish and describe, and should not be understood as indicating or implying relative importance.

[0058] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0059] In order to improve the control accuracy of the power grid system, the present application provides a power grid system demand response control method for improving resilience.

[0060] During the control process of the power grid system, the power consumption of the demand-side load resources in the power grid system is controlled through control devices.

[0061] The following is an explanation of a power grid system demand response control method for improving resilience provided by this application through specific examples. Figure 1 This is a flow chart of a method for controlling demand response of a power grid system for improving resilience provided by this application. The execution subject of this method may be a control device, which may be a device with computing and processing control functions. Figure 1 As shown, the method includes:

[0062] S101: Perform a first adjustment on the power consumption of demand-side load resources in a power grid system.

[0063] The first adjustment is equivalent to performing an adjustment using the power adjustment value so that the adjusted power value approaches the target adjustment power value.

[0064] S102: Determine a first adjustment deviation of the power consumption of the demand-side load resource after the first adjustment.

[0065] The first adjustment deviation represents the accuracy of the first adjustment.

[0066] S103. If the first adjustment deviation is greater than the preset power deviation threshold, a second adjustment is performed on the power consumption of the demand-side load resource according to the preset power state condition, so that the power state of the demand-side load resource after the second adjustment meets the preset power state condition.

[0067] If the first adjustment deviation is greater than the preset power deviation threshold, it indicates that the accuracy of the first adjustment is poor and does not meet the user's adjustment requirements, and further adjustment is required. Based on the preset power state condition, a second adjustment is performed on the power consumption of the demand-side load resource. After the second adjustment, the power state of the demand-side load resource meets the preset power state condition.

[0068] The preset power deviation threshold is a value set in advance according to the regulation accuracy requirement, and the preset power state condition is a power state set according to the regulation target.

[0069] Furthermore, if the first adjustment deviation is less than or equal to the preset power deviation threshold, it indicates that the accuracy of the first adjustment meets the user's adjustment requirements and the adjustment is completed.

[0070] S104: Determine a second adjustment deviation of the power consumption of the demand-side load resource after the second adjustment.

[0071] The second adjustment deviation represents the accuracy of the second adjustment.

[0072] S105. If the second adjustment deviation is still greater than the preset power deviation threshold, the power consumption of the demand side load resource is re-adjusted for the second time according to the preset power state condition, so that the power state of the demand side load resource after the second adjustment meets the preset power state condition, until the second adjustment deviation is less than or equal to the preset power deviation threshold.

[0073] If the second adjustment deviation is still greater than the preset power deviation threshold, it indicates that the accuracy of the second adjustment still does not meet the user's adjustment requirements and further adjustment is required. The second adjustment of the power consumption of the demand-side load resource is then re-performed according to the preset power state conditions. This ensures that the power state of the demand-side load resource after the second adjustment meets the preset power state conditions. This continues until the second adjustment deviation is less than or equal to the preset power deviation threshold.

[0074] If the second adjustment deviation is less than or equal to the preset power deviation threshold, it indicates that the accuracy of the second adjustment meets the user's adjustment requirements and the adjustment is completed.

[0075] Furthermore, the control device controls the power grid system to transmit the regulated power to the demand-side load resources, thereby achieving precise control of the power grid system.

[0076] In summary, in this embodiment, a first adjustment is made to the power consumption of the demand-side load resources in the power grid system; a first adjustment deviation of the power consumption of the demand-side load resources after the first adjustment is determined; if the first adjustment deviation is greater than the preset power deviation threshold, then according to the preset power state condition, a second adjustment is made to the power consumption of the demand-side load resources, so that the power state of the demand-side load resources after the second adjustment meets the preset power state condition; a second adjustment deviation of the power consumption of the demand-side load resources after the second adjustment is determined; if the second adjustment deviation is still greater than the preset power deviation threshold, then according to the preset power state condition, a second adjustment is made to the power consumption of the demand-side load resources again, so that the power state of the demand-side load resources after the second adjustment meets the preset power state condition, until the second adjustment deviation is less than or equal to the preset power deviation threshold. Thus, the power consumption of the demand-side load resources in the power grid system is precisely controlled, and the resilience of the demand response control of the power grid system is improved.

[0077] In the above Figure 1 Based on the corresponding embodiment, the present application also provides a method for calculating a first adjustment deviation. Figure 2 This is a flow chart of a method for calculating a first adjustment deviation provided by this application. Figure 2 As shown, determining the first adjustment deviation of the power consumption of the demand-side load resource after the first adjustment in S102 includes:

[0078] S201: Determine a first power difference between power consumption of a demand-side load resource before and after a first adjustment.

[0079] The absolute value of the difference between the power consumption of the demand-side load resource before and after the first adjustment is determined as a first power difference. The first power difference represents the actual adjustment effect of the first adjustment.

[0080] S202: Calculate a first regulation deviation according to a target regulation power value of the power grid system and the first power difference.

[0081] The absolute value of the difference between the target regulated power value of the power grid system and the first power difference is determined as a first regulation deviation. The first regulation deviation represents the accuracy of the first regulation. The smaller the first regulation deviation, the more accurate the first regulation; the larger the first regulation deviation, the less accurate the first regulation.

[0082] In summary, in this embodiment, the first adjustment deviation is determined by determining a first power difference between the power consumption of the demand-side load resource before and after the first adjustment and calculating the first adjustment deviation based on the target adjustment power value of the power grid system and the first power difference.

[0083] In the above Figure 2 Based on the corresponding embodiment, the present application also provides a method for calculating a second adjustment deviation. Figure 3 This is a flow chart of a method for calculating the second adjustment deviation provided by this application. Figure 3 As shown, determining the second adjustment deviation of the power consumption of the demand-side load resource after the second adjustment in S104 includes:

[0084] S301: Determine a second power difference between power consumption of a demand-side load resource before and after a second adjustment.

[0085] The absolute value of the difference between the power consumption of the demand-side load resource before and after the second adjustment is determined as the second power difference. The second power difference represents the actual adjustment effect of the second adjustment.

[0086] S302: Calculate a second adjustment deviation according to the target adjustment power value and the second power difference.

[0087] The second power difference is added to the power differences of the multiple rounds of adjustment before the second adjustment, and the difference between the sum and the target adjustment power value is calculated. The absolute value of the difference is determined as the second adjustment deviation. The second adjustment deviation represents the accuracy of the second adjustment. The smaller the second adjustment deviation, the more accurate the second adjustment; the larger the second adjustment deviation, the less accurate the second adjustment.

[0088] In summary, in this embodiment, the second adjustment deviation is determined by determining the second power difference between the power consumption of the demand-side load resource before and after the second adjustment and calculating the second adjustment deviation based on the target adjustment power value and the second power difference.

[0089] In the above Figure 2 Based on the corresponding embodiment, the present application also provides a method for performing a first adjustment on power consumption. Figure 4 This is a flow chart of a method for first adjusting power consumption provided by this application. Figure 4 As shown, the first adjustment of the power consumption of the demand-side load resource in S101 includes:

[0090] S401. Determine a target adjustment power value according to a dispatch instruction of the power grid system.

[0091] Receive a dispatch instruction from the power grid system, parse a power regulation instruction in the dispatch instruction, and determine a target regulated power value from the power regulation instruction.

[0092] S402: Perform a first adjustment on the power consumption of the demand-side load resource according to the target adjustment power value.

[0093] The target regulated power value is the power value to be regulated, and the regulation direction (decrease or increase) must also be determined. If the regulation direction is decrease, the target regulated power value for the power consumption of the demand-side load resource needs to be reduced. If the regulation direction is increase, the target regulated power value for the power consumption of the demand-side load resource needs to be increased.

[0094] In summary, in this embodiment, a target adjustment power value is determined based on a dispatch instruction from the power grid system, and a first adjustment is performed on the power consumption of the demand-side load resource based on the target adjustment power value. Thus, the first adjustment of the power consumption of the demand-side load resource is achieved.

[0095] In the above Figure 1 On the basis of the corresponding embodiments, in the present application, the preset power state condition includes: a reference ratio of the target power state, where the reference ratio is a target ratio of the consumed power and the rated power of the demand-side load resource.

[0096] Furthermore, in S103, the power consumption of the demand-side load resource is second-adjusted according to the preset power state condition, so that the power state of the demand-side load resource after the second adjustment meets the preset power state condition, including:

[0097] According to the reference ratio, a second adjustment is performed on the power consumption of the demand side load resource so that after the second adjustment, the ratio of the power consumption of the demand side load resource to the rated power reaches the reference ratio and is in the target power state.

[0098] The rated power of demand-side load resources is fixed, so the reference ratio can represent their target power consumption. Introducing the reference ratio makes power consumption control of demand-side load resources more uniform, allowing control of different demand-side load resources using a single reference ratio.

[0099] Specifically, when the power state of the demand-side load resources is greater than the reference ratio, the operating power of the demand-side load resources is lowered to provide more operating reserve power for the power grid system; when the power state of the demand-side load resources is less than the reference ratio, the operating power of the demand-side load resources is increased, so that the operating power distribution of the power grid system is more balanced, and the power consumption of the demand-side load resources can be accurately adjusted.

[0100] In summary, in this embodiment, by performing a second adjustment on the power consumption of the demand-side load resource based on the reference ratio, the ratio of the power consumption of the demand-side load resource to the rated power reaches the reference ratio after the second adjustment, and the power consumption of the demand-side load resource is in the target power state. This allows for precise adjustment of the power consumption of the demand-side load resource.

[0101] Based on the above embodiment, the present application also provides a method for performing a second adjustment on power consumption. Figure 5 This is a flow chart of a method for performing a second adjustment on power consumption provided by this application. Figure 5 As shown, according to the reference ratio, the second adjustment is performed on the power consumption of the demand-side load resource, including:

[0102] S501. Calculate the control amount of power consumption of the power grid system for the demand-side load resource based on the reference ratio, the power state ratio of the demand-side load resource, and the power state ratio of the adjacent load resources of the demand-side load resource.

[0103] On the basis of referring to the reference ratio, the power state ratio of the adjacent load resources of the demand-side load resource may also be referred to to calculate the control amount of the power consumption of the power grid system for the demand-side load resource.

[0104] The specific calculation method is shown in the following formula (1):

[0105]

[0106] Among them, u i is the control amount of the load resource on the i-th demand side, is the adjustment value of the power state ratio of the i-th demand-side load resource, α i is the power state ratio of the i-th demand-side load resource (the ratio of current power to rated power); k α is the coupling gain coefficient; is the set of load resources adjacent to the i-th demand-side load resource; a ij is the element in the adjacency matrix A of the i-th demand-side load resource, α ref is the reference ratio, b i is the acceptance coefficient for the reference ratio.

[0107] Among them, the adjacency matrix is a square matrix used to indicate whether each two demand-side load resources are adjacent. If the two demand-side load resources are adjacent, the corresponding element of the adjacency matrix is 1; if the two demand-side load resources are not adjacent, the corresponding element of the adjacency matrix is 0.

[0108] S502: Perform a second adjustment on the power consumption of the load resources on the demand side of the power grid system according to the controlled amount of the power consumption of the load resources on the demand side of the power grid system.

[0109] By referring to the reference ratio and adjacent load resources, the calculated control value of the power consumption of the power resources on the demand side of the power grid system becomes more accurate. Using this control value, the second adjustment of the power consumption of the power resources on the demand side of the power grid system can be performed to improve the control accuracy of the power grid system.

[0110] Among them, the adjacent load resources are load resources connected to the demand-side load resources, which can be determined by the communication topology relationship of the demand-side load resources.

[0111] In summary, in this embodiment, the control amount of power consumption of the grid system's demand-side load resources is calculated based on the reference ratio, the power state ratio of the demand-side load resources, and the power state ratios of the grid system's adjacent demand-side load resources. Based on the control amount of power consumption of the grid system's demand-side load resources, a second adjustment is performed on the power consumption of the grid system's demand-side load resources, where the adjacent load resources are loads connected to the demand-side load resources. This improves the control accuracy of the grid system.

[0112] Based on the above embodiment, the present application also provides another method for performing a second adjustment on power consumption. Figure 6 This is a flow chart of another method for performing a second adjustment on power consumption provided by this application. Figure 6 As shown, performing a second adjustment on the power consumption of the load resource on the demand side of the power grid system according to the reference ratio also includes:

[0113] S601. Calculate the controlled amount of power consumption of multiple demand-side load resources of the power grid system according to a reference ratio, a pull matrix and a pin connection matrix of multiple demand-side load resources.

[0114] When there are multiple demand-side load resources that need to be adjusted, it is necessary to simultaneously refer to the pull matrix and the pin connection matrix of multiple demand-side load resources based on the reference ratio.

[0115] The specific calculation method can be expressed in matrix form, as shown in the following formula (2):

[0116]

[0117] Where L is the pull matrix, B is the pin connection matrix, 1 N is a column vector whose elements are all 1, and u is a control vector composed of the control quantities of multiple demand-side load resources. It is a regulation vector composed of the regulation values of the power state ratios of multiple demand-side load resources, and α is a vector composed of the power state ratios of multiple demand-side load resources.

[0118] Wherein, the Pull-type matrix L = DA, D is the out-degree matrix, and A is the adjacency matrix. The out-degree matrix is a diagonal matrix, and the diagonal elements of the diagonal matrix correspond to the number of adjacent load resources of the demand-side load resource in the communication network.

[0119] The pin connection matrix is a diagonal matrix, and the diagonal element values of the diagonal matrix correspond to whether the demand side load resource receives the reference ratio signal. If received, the diagonal element value is 1; if not received, the diagonal element value is 0.

[0120] S602: Perform a second adjustment on the power consumption of the plurality of demand-side load resources of the power grid system according to the controlled amount of the power consumption of the plurality of demand-side load resources of the power grid system.

[0121] By referring to the reference ratio and the adjacent load resources of the multiple demand-side load resources, the control amount of the power consumption of the multiple demand-side load resources of the power grid system is calculated to be more accurate. Using this control amount, the second adjustment of the power consumption of the demand-side load resources of the power grid system can be performed to improve the control accuracy of the power grid system.

[0122] In summary, in this embodiment, the controlled amount of power consumption of the multiple demand-side load resources in the power grid system is calculated based on the reference ratio, the pull matrix of the multiple demand-side load resources, and the pin connection matrix. Based on the controlled amount of power consumption of the multiple demand-side load resources in the power grid system, a second adjustment is performed on the power consumption of the multiple demand-side load resources in the power grid system. This improves the control accuracy of the power grid system.

[0123] In the above Figure 6 On the basis of the corresponding embodiment, in S601, the control amount of power consumption of multiple demand-side load resources of the power grid system is calculated according to the reference ratio, the pull matrix and the pin connection matrix of the multiple demand-side load resources, including:

[0124] The control amount of power consumption of the multiple demand-side load resources of the power grid system is calculated according to the reference ratio, the attack vector, the pull matrix and the pin connection matrix of the multiple demand-side load resources.

[0125] When facing external attacks, the control plan for the power grid system needs to take external attack factors into consideration to resolve the control risks brought about by external attacks.

[0126] The calculation method of the control amount after being tampered by an external attacker can be shown in the following formula (3):

[0127]

[0128] Wherein, Ξ is an attack vector when subjected to an external attack. The attack vector is a vector composed of multiple attack data for different demand-side load resources.

[0129] When facing external attacks, the control device will be tampered by the attacker. However, for the control solution provided by the embodiment of the present application, any external attack on the control device will not affect the final control effect. Specifically, under the attack of any attack vector, the power state steady-state value of the control solution provided by the embodiment of the present application is expressed as shown in the following formula (4):

[0130]

[0131] From the above formula (4), it can be seen that in the face of any external attack, the control scheme provided by the embodiment of the present application can control the power state of the demand-side load resource to the reference ratio α ref This means that the power state of the demand-side load resource will be completely unaffected by external attacks. In other words, the control device that applies the control solution provided by the embodiment of the present application can resist any external attack.

[0132] For example, an external attack could be a false data injection (FDI) attack, which can have a serious negative impact on the control system of a control device. Specifically, the original control input data is contaminated by maliciously injected data, causing the control device to malfunction, resulting in power deviations on the demand side, load resources, and control regulation failures, making it impossible to complete control and regulation tasks according to the grid's dispatch requirements.

[0133] By improving the control logic of control devices at the software level, the cost of defending against FDI attacks is reduced, the success rate of defending against FDI attacks is improved, and the adjustment control is made more precise.

[0134] In summary, in this embodiment, the controlled power consumption of multiple demand-side load resources in the power grid system is calculated based on the reference ratio, the attack vector, the pull matrix, and the pin connection matrix of multiple demand-side load resources. The attack vector is a vector composed of multiple attack data for different demand-side load resources. Thus, by improving the control logic of the control device at the software level, the cost of defending against FDI attacks is reduced, the success rate of FDI attacks is increased, and the regulation control is more precise.

[0135] Based on the above embodiments, the embodiments of the present application demonstrate the beneficial effects of the power grid system demand response control method for improving resilience provided by the present application in the form of comparative experiments.

[0136] For example, there are 6 demand-side load resources with a rated capacity of 10MW in the power system, and their initial total power is 33MW. The injection data of the FDI attack is designed to be 0.1, and then the power consumption of the power grid is controlled by using a control device that applies a traditional power grid system control method and a control device that applies a power grid system demand response control method for improving resilience provided by this application. Among them, the control reference ratio of the power state is 0.3, and the goal is to reduce the total power of multiple demand-side load resources by 15MW (from 33MW to 18MW) in response to the grid dispatch requirements.

[0137] Figure 7 This is a control effect diagram of the traditional power grid system; Figure 8 This is the power grid system control effect diagram provided for this application.

[0138] By reference Figure 7 、 Figure 8 It can be seen that the traditional control equipment cannot converge the power state ratio to the reference ratio (0.3) under the FDI attack. The power state ratios of 6 different demand-side load resources finally stabilized at 0.4641, 0.3923, 0.3975, 0.4359, 0.4077 and 0.4026 respectively. The controller that adopts the demand response control method for the power grid system for improving resilience proposed in this application can quickly converge the power state of all demand-side load resources to the reference ratio (0.3). This shows that the demand response control method for the power grid system for improving resilience proposed in this application can completely eliminate the negative impact of external network attacks and can accurately control the demand-side load resources.

[0139] The following describes a power grid system demand response control device, equipment, and storage medium for improving resilience provided by this application. The specific implementation process and technical effects are described above and will not be repeated below.

[0140] Figure 9 Schematic diagram of a power grid system demand response control device for improving resilience provided in an embodiment of the present application. Figure 9 As shown, the device includes:

[0141] The first regulating module 901 is configured to perform a first regulation on the power consumption of the load resources on the demand side of the power grid system.

[0142] The first determining module 902 is configured to determine a first adjustment deviation of the power consumption of the demand-side load resource after the first adjustment.

[0143] The second adjustment module 903 is used to perform a second adjustment on the power consumption of the load resources on the demand side of the power grid system according to the preset power state condition if the first adjustment deviation is greater than the preset power deviation threshold, so that the power state of the load resources on the demand side after the second adjustment meets the preset power state condition.

[0144] The second determining module 904 is configured to determine a second adjustment deviation of the power consumption of the demand-side load resource after the second adjustment.

[0145] The second adjustment module 903 is also used to re-adjust the power consumption of the demand-side load resources of the power grid system according to the preset power state conditions if the second adjustment deviation is still greater than the preset power deviation threshold, so that the power state of the demand-side load resources after the second adjustment meets the preset power state conditions, until the second adjustment deviation is less than or equal to the preset power deviation threshold.

[0146] Furthermore, the first determination module 902 is specifically configured to determine a first power difference between the power consumption of the demand-side load resource before and after the first adjustment; and calculate a first adjustment deviation based on the target adjustment power value of the power grid system and the first power difference.

[0147] Furthermore, the second determining module 904 is specifically configured to determine a second power difference between the power consumption of the demand-side load resource before and after the second adjustment; and calculate a second adjustment deviation according to the target adjustment power value and the second power difference.

[0148] Furthermore, the first adjustment module 901 is specifically configured to determine a target adjustment power value according to a dispatch instruction of the power grid system; and perform a first adjustment on the power consumption of the demand-side load resource according to the target adjustment power value.

[0149] Furthermore, the second adjustment module 903 is specifically used to preset power state conditions including: a reference ratio of the target power state, the reference ratio being the target ratio of the consumed power and the rated power of the demand-side load resources; performing a second adjustment on the consumed power of the demand-side load resources of the power grid system according to the reference ratio, so that after the second adjustment, the ratio of the consumed power and the rated power of the demand-side load resources reaches the reference ratio and is in the target power state.

[0150] Furthermore, the second adjustment module 903 is specifically used to calculate the control amount of power consumption of the demand-side load resources of the power grid system based on the reference ratio, the power state ratio of the demand-side load resources and the power state ratio of the adjacent demand-side load resources of the power grid system; and perform a second adjustment on the power consumption of the demand-side load resources of the power grid system based on the control amount of power consumption of the demand-side load resources of the power grid system, wherein the adjacent load resources are loads connected to the demand-side load resources.

[0151] Furthermore, the second adjustment module 903 is specifically used to calculate the control amount of power consumption of multiple demand-side load resources of the power grid system based on the reference ratio, the pull matrix and the pin connection matrix of multiple demand-side load resources; and perform a second adjustment on the power consumption of multiple demand-side load resources of the power grid system based on the control amount of power consumption of multiple demand-side load resources of the power grid system.

[0152] Furthermore, the second adjustment module 903 is specifically used to calculate the control amount of power consumption of multiple demand-side load resources in the power grid system based on the reference ratio, the attack vector, the pull matrix and the pin connection matrix of multiple demand-side load resources; wherein the attack vector is a vector composed of multiple attack data for different demand-side load resources.

[0153] Figure 10 A schematic diagram of a control device provided in an embodiment of the present application, which may be a device with computing and processing functions.

[0154] The control device includes: a processor 1001 and a storage medium 1002. The processor 1001 and the storage medium 1002 are connected via a bus.

[0155] The storage medium 1002 is used to store programs, and the processor 1001 calls the programs stored in the storage medium 1002 to execute the above method embodiment. The specific implementation methods and technical effects are similar and will not be repeated here.

[0156] Optionally, the present invention also provides a storage medium, including a program, which is used to execute the above-mentioned method embodiment when executed by a processor. In the several embodiments provided by the present invention, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0157] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0158] In addition, the functional units in various embodiments of the present invention may be integrated into a single processing unit, each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or hardware plus software functional units.

[0159] The above-mentioned integrated unit implemented in the form of a software functional unit can be stored in a storage medium. The above-mentioned software functional unit is stored in a storage medium and includes a number of instructions for causing a computer device (which can be a personal computer, server, or network device, etc.) or a processor (English: processor) to perform some steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: a USB flash drive, a mobile hard disk, a read-only memory (English: Read-Only Memory, abbreviated: ROM), a random access memory (English: Random Access Memory, abbreviated: RAM), a magnetic disk or an optical disk, and other media that can store program code.

Claims

1. A power grid system demand response control method for improving resilience, characterized in that: The method comprises: Performing a first adjustment on the power consumption of the demand-side load resource in the power grid system; determining a first adjustment deviation of the power consumption of the demand-side load resource after the first adjustment; If the first adjustment deviation is greater than a preset power deviation threshold, performing a second adjustment on the power consumption of the demand-side load resource according to a preset power state condition, so that the power state of the demand-side load resource after the second adjustment meets the preset power state condition; determining a second adjustment deviation of the power consumption of the demand-side load resource after the second adjustment; If the second adjustment deviation is still greater than the preset power deviation threshold, re-adjusting the power consumption of the demand-side load resource according to the preset power state condition, so that the power state of the demand-side load resource meets the preset power state condition after the second adjustment, until the second adjustment deviation is less than or equal to the preset power deviation threshold; The preset power state condition includes: a reference ratio of a target power state, wherein the reference ratio is a target ratio of the consumed power and the rated power of the demand-side load resource; The second adjustment of the power consumption of the demand-side load resource according to the preset power state condition so that the power state of the demand-side load resource meets the preset power state condition after the second adjustment includes: According to the reference ratio, a second adjustment is performed on the power consumption of the demand-side load resource, so that after the second adjustment, the ratio of the power consumption of the demand-side load resource to the rated power reaches the reference ratio and is in the target power state; The second adjustment of the power consumption of the demand-side load resource according to the reference ratio includes: The control amount of the power consumption of the power grid system for the demand-side load resource is calculated based on the reference ratio, the power state ratio of the demand-side load resource, and the power state ratio of the adjacent load resources of the demand-side load resource; the calculation method is shown in the following formula: Among them, u i is the control amount of the load resource on the i-th demand side, is the adjustment value of the power state ratio of the i-th demand-side load resource, α i is the power state ratio of the i-th demand-side load resource; k α is the coupling gain coefficient; is the set of load resources adjacent to the i-th demand-side load resource; a ij is the element in the adjacency matrix A of the i-th demand-side load resource, α ref is the reference ratio, b i is the acceptance coefficient for the reference ratio; A second adjustment is performed on the power consumption of the demand-side load resource according to the control amount of the power grid system for the power consumption of the demand-side load resource, wherein the adjacent load resource is a load resource connected to the demand-side load resource.

2. The method according to claim 1, characterized in that The determining of a first adjustment deviation of the power consumption of the demand-side load resource after the first adjustment includes: Determining a first power difference between power consumption of the demand-side load resource before and after the first adjustment; The first regulation deviation is calculated according to the target regulation power value of the power grid system and the first power difference.

3. The method according to claim 2, characterized in that The determining of a second adjustment deviation of the power consumption of the demand-side load resource after the second adjustment includes: Determining a second power difference between the power consumed by the demand-side load resource before and after the second adjustment; The second adjustment deviation is calculated according to the target adjustment power value and the second power difference.

4. The method according to claim 2, characterized in that The first adjustment of the power consumption of the demand-side load resources in the power grid system includes: Determining the target regulated power value according to the dispatch instruction of the power grid system; A first adjustment is performed on the power consumption of the demand-side load resource according to the target adjustment power value.

5. The method according to claim 1, wherein The second adjustment of the power consumption of the demand-side load resource according to the reference ratio further includes: Calculating a control amount of power consumption of the power grid system for the plurality of demand-side load resources according to the reference ratio, the pull matrix and the pin connection matrix of the plurality of demand-side load resources; The power consumption of the plurality of demand-side load resources is second-adjusted according to the control amount of the power grid system for the power consumption of the plurality of demand-side load resources.

6. The method according to claim 5, characterized in that The calculating, according to the reference ratio, the pull matrix and the pin connection matrix of the plurality of demand-side load resources, of the control amount of the power consumption of the power grid system for the plurality of demand-side load resources comprises: Calculating a control amount of power consumption of the power grid system for the plurality of demand-side load resources according to the reference ratio, the attack vector, the pull matrix and the pin connection matrix of the plurality of demand-side load resources; The attack vector is a vector composed of multiple attack data for different demand-side load resources.

7. A power grid system demand response control device for improving resilience, characterized in that: The device comprises: A first regulating module, configured to perform a first regulation on the power consumption of the demand-side load resources in the power grid system; A first determining module, configured to determine a first adjustment deviation of the power consumption of the demand-side load resource after the first adjustment; a second adjustment module, configured to, if the first adjustment deviation is greater than a preset power deviation threshold, perform a second adjustment on the power consumption of the demand-side load resource according to a preset power state condition, so that the power state of the demand-side load resource meets the preset power state condition after the second adjustment; A second determining module is used to determine a second adjustment deviation of the power consumption of the demand-side load resource after the second adjustment; The second adjustment module is further configured to, if the second adjustment deviation is still greater than the preset power deviation threshold, re-adjust the power consumption of the demand-side load resource according to the preset power state condition, so that the power state of the demand-side load resource meets the preset power state condition after the second adjustment, until the second adjustment deviation is less than or equal to the preset power deviation threshold; The second adjustment module is specifically configured to: when the preset power state condition includes: a reference ratio of a target power state, the reference ratio being a target ratio of the consumed power of the demand-side load resource to the rated power; and performing a second adjustment on the consumed power of the demand-side load resource according to the reference ratio, so that after the second adjustment, the ratio of the consumed power of the demand-side load resource to the rated power reaches the reference ratio and is in the target power state; The second adjustment module is further configured to calculate the control amount of the power consumption of the power grid system for the demand-side load resource based on the reference ratio, the power state ratio of the demand-side load resource, and the power state ratio of the adjacent load resources of the demand-side load resource; the calculation method is shown in the following formula: Among them, u i is the control amount of the load resource on the i-th demand side, is the adjustment value of the power state ratio of the i-th demand-side load resource, α i is the power state ratio of the i-th demand-side load resource; k α is the coupling gain coefficient; is the set of load resources adjacent to the i-th demand-side load resource; a ij is the element in the adjacency matrix A of the i-th demand-side load resource, α ref is the reference ratio, b i is the acceptance coefficient for the reference ratio; A second adjustment is performed on the power consumption of the demand-side load resource according to the control amount of the power grid system for the power consumption of the demand-side load resource, wherein the adjacent load resource is a load resource connected to the demand-side load resource.

8. A control device, characterized in that: include: A processor and a storage medium, wherein the processor and the storage medium are communicatively connected via a bus, the storage medium stores program instructions executable by the processor, and the processor calls the program stored in the storage medium to execute the steps of the power grid system demand response control method for improving resilience as described in any one of claims 1 to 6.

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