Regulation and control method, system and equipment for transformer area flexible interconnection device and storage medium

Abstract

The invention discloses a transformer area flexible interconnection device regulation and control method, system and equipment and a storage medium, and belongs to the technical field of electric power regulation and control. According to the invention, a transformer area actual regulation and control demand calculation model is constructed through transformer area historical load data and a transformer area heavy load boundary value, and then a transformer area flexible resource regulation and control model is constructed through transformer area power equipment information and transformer area power equipment historical operation data. Calculating an actual regulation and control demand value of the transformer area according to the real-time load data of the transformer area and the regulation and control demand value of the transformer area, and solving the flexible resource regulation and control model of the transformer area according to the actual regulation and control demand value of the transformer area, thereby determining a coordinated regulation and control value of the power equipment of the transformer area. And accurate regulation and control of the transformer area flexible interconnection device are realized in combination with transformer area power equipment information. According to the invention, the problem of inaccurate regulation and control of the transformer area flexible interconnection device in the prior art can be solved, and the regulation and control accuracy of the transformer area flexible interconnection device is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of power regulation and control, and particularly relates to a regulation method, system, device and storage medium for a flexible interconnection device in a substation area. Background Art

[0002] With the increasing demand for electricity, the difference between peak and valley electricity consumption becomes more and more obvious. During peak hours, the grid load rises sharply, which may lead to overloading of power equipment and increase the risk of power outages; during valley hours, the utilization rate of power equipment is low, resulting in waste of resources, which leads to unstable operation of the power system. In addition, the large-scale access of renewable energy to the grid brings great challenges to the stable operation of the power system due to the intermittency and volatility of its power generation. Therefore, it is necessary to control the load in the substation area to ensure the stable operation of the power system in the substation area.

[0003] At present, most of the flexible load control in the substation area is realized through flexible interconnection devices, so that some non-critical loads in the substation area can be temporarily adjusted or transferred, effectively reducing the burden on the power grid and ensuring the stable operation of the power system. However, in the current control process of flexible interconnection devices, due to the differences in load equipment and photovoltaic equipment in the substation area and the diversity of load demands, the regulation of flexible interconnection devices is inaccurate, the regulation effect is poor, it is difficult to play the role of flexible interconnection devices in the substation area in reducing the burden on the power grid and stabilizing the operation of the system, and the operation stability of the power system is affected. Therefore, there is an urgent need for a regulation method, system, device and storage medium for a flexible interconnection device in a substation area to solve the defects of the existing technology. Summary of the Invention

[0004] The present invention aims to provide a regulation method, system, device and storage medium for a flexible interconnection device in a substation area to solve the problem of inaccurate regulation of the flexible interconnection device in the substation area in the existing technology. By constructing a calculation model for the actual regulation demand in the substation area and a regulation model for flexible resources in the substation area, the collaborative regulation value of power equipment in the substation area is solved, and the regulation accuracy of the flexible interconnection device in the substation area is improved.

[0005] To solve the above technical problems, an embodiment of the present invention provides a regulation method for a flexible interconnection device in a substation area, including:

[0006] Obtain the historical load data of the substation area, the heavy-load boundary value of the substation area, the power equipment information of the substation area, and the historical operation data of the power equipment in the substation area;

[0007] Construct a calculation model for the actual regulation demand in the substation area according to the historical load data of the substation area and the heavy-load boundary value of the substation area;

[0008] Construct a regulation model for flexible resources in the substation area according to the power equipment information of the substation area and the historical operation data of the power equipment in the substation area;

[0009] Obtain the real-time load data of the substation area and the regulation requirement value of the substation area, and input the real-time load data of the substation area and the regulation requirement value of the substation area into the actual regulation demand calculation model of the substation area to determine the actual regulation demand value of the substation area;

[0010] Solve the flexible resource regulation model of the substation area according to the actual regulation demand value of the substation area to determine the coordinated regulation value of the power equipment in the substation area;

[0011] Obtain the real-time operation data of the power equipment in the substation area, and regulate the flexible interconnection device in the substation area according to the coordinated regulation value of the power equipment in the substation area and the real-time operation data of the power equipment in the substation area.

[0012] It can be understood that, compared with the prior art, the present invention constructs an actual regulation demand calculation model for the substation area through the historical load data of the substation area and the heavy load boundary value of the substation area, and then constructs a flexible resource regulation model for the substation area through the power equipment information of the substation area and the historical operation data of the power equipment in the substation area. Then, according to the real-time load data of the substation area and the regulation requirement value of the substation area, the actual regulation demand value of the substation area is calculated. Then, the flexible resource regulation model of the substation area is solved through the actual regulation demand value of the substation area, so as to determine the coordinated regulation value of the power equipment in the substation area. Furthermore, combined with the power equipment information of the substation area, the accurate regulation of the flexible interconnection device in the substation area is realized. By integrating the historical load data of the substation area, the heavy load boundary value of the substation area, the power equipment information of the substation area and the historical operation data of the power equipment in the substation area, the present invention enables the actual regulation demand calculation model and the flexible resource regulation model of the substation area to comprehensively and deeply analyze the characteristics of different power equipment in the substation area, accurately reflect the state change trend of the power resources in the substation area, and then realize the refined and accurate regulation of different flexible loads of different power equipment; then, by solving the actual regulation demand value of the substation area through the real-time load data of the substation area and the regulation requirement value of the substation area, the actual regulation demand value of the substation area can not only consider the actual situation of the load change in the substation area, but also consider the influence of other external factors such as the regulation instructions of the superior power system, realizing the integration of multi-factor demands, and further optimizing the comprehensiveness and accuracy of the regulation of the flexible interconnection device in the substation area; by solving the coordinated regulation value of the power equipment in the substation area and then regulating the flexible interconnection device in the substation area through the power equipment information of the substation area and the historical operation data of the power equipment in the substation area, the coordinated regulation of multiple devices in the substation area can be realized, the characteristics of different power equipment in the substation area can be fully explored, and then the regulation of the flexible interconnection device in the substation area is more accurate, thereby reducing the influence of unbalanced load in the substation area and ensuring the stable and efficient operation of the power system.

[0013] As a preferred solution, the construction of the actual regulation demand calculation model for the substation area according to the historical load data of the substation area and the heavy load boundary value of the substation area specifically includes:

[0014] Construct a function of the load change degree of the substation area according to the historical load data of the substation area;

[0015] Determine the variable terms of the load change in the substation area according to the load change degree function of the substation area, and construct a load prediction function for the substation area according to the load change terms of the substation area;

[0016] Obtain the real-time load variable terms of the substation area and the variable terms of the substation area regulation requirement value;

[0017] Construct a calculation function for the actual regulation demand of the substation area according to the real-time load variable terms of the substation area, the variable terms of the substation area regulation requirement value, and the heavy load boundary value of the substation area;

[0018] Construct a calculation model for the actual regulation demand of the substation area according to the load change degree function of the substation area, the load prediction function of the substation area, and the calculation function of the actual regulation demand of the substation area.

[0019] This preferred solution constructs a load change degree function for the substation area through historical load data, and then constructs a load prediction function for the substation area, which can accurately quantify the load fluctuation intensity of the substation area and predict the future load of the substation area. The heavy load boundary value of the substation area is embedded in the calculation function of the actual regulation demand of the substation area, so that the calculation function of the actual regulation demand of the substation area can consider the limit requirements of the load of the substation area, so that the calculation model of the actual regulation demand of the substation area can achieve double correction of the long-term law and short-term fluctuation of the load, improve the real-time performance and accuracy of the calculation model of the actual regulation demand of the substation area, and further make the regulation of the flexible interconnection device in the substation area more accurate.

[0020] As a preferred solution, constructing a flexible resource regulation model for the substation area according to the power equipment information of the substation area and the historical operation data of the power equipment in the substation area specifically includes:

[0021] The power equipment information of the substation area includes: the number of load storage equipment, the number of photovoltaic equipment, the upper limit value of the regulation capacity of the load storage equipment, the lower limit value of the regulation capacity of the load storage equipment, and the upper limit value of the regulation capacity of the photovoltaic equipment;

[0022] The historical operation data of the power equipment in the substation area includes: the historical active power of the load of the load storage equipment and the historical photovoltaic active power output of the photovoltaic equipment;

[0023] Construct an optimization objective function for load balancing according to the historical active power of the load of the load storage equipment and the historical photovoltaic active power output of the photovoltaic equipment;

[0024] Construct regulation potential constraints, source-load non-offset regulation constraints, and regulation demand constraints according to the number of load storage equipment, the number of photovoltaic equipment, the upper limit value of the regulation capacity of the load storage equipment, the lower limit value of the regulation capacity of the load storage equipment, and the upper limit value of the regulation capacity of the photovoltaic equipment;

[0025] Construct a flexible resource regulation model for the substation area according to the load balancing optimization objective function, regulation potential constraints, source-load non-offset regulation constraints, and regulation demand constraints.

[0026] In this preferred solution, a load balancing objective function is constructed based on the historical active power of the load and storage equipment and the historical photovoltaic active power output of the photovoltaic equipment, so that the load balancing objective function can fully measure the working characteristics of the load and storage equipment and the photovoltaic equipment in the substation area, and thus accurately characterize the superimposed load fluctuations in the substation area. By constructing the regulation potential constraint, the source-load non-canceling regulation constraint, and the regulation demand constraint, it can not only accurately reflect the differences in the flexible loads of different power equipment in the substation area, but also ensure that the power equipment in the substation area operates within a safe range, enabling the flexible resource regulation model in the substation area to accurately characterize the relationship between the power equipment, flexible interconnection device regulation, and load balancing in the substation area, thereby ensuring the accuracy of the flexible interconnection device regulation in the substation area.

[0027] As a preferred solution, the load balancing optimization objective function specifically includes:

[0028]

[0029] Among them, P 1,m,t represents the active power of the load of the mth load and storage equipment at time t; represents the regulation amount of the mth load and storage equipment at time t; M is the total number of load and storage equipment; P 2,n,t represents the photovoltaic active power output of the nth photovoltaic equipment at time t; represents the regulation amount of the nth photovoltaic equipment at time t; P 1,m,t-1 represents the active power of the load of the mth load and storage equipment at time t - 1; P 2,n,t-1 represents the photovoltaic active power output of the nth photovoltaic equipment at time t - 1.

[0030] In this preferred solution, a load balancing objective function is constructed based on the historical active power of the load and storage equipment and the historical photovoltaic active power output of the photovoltaic equipment, enabling the load balancing objective function to consider the superimposed load volatility in the substation area, and then dynamically allocate the regulation amounts of the load and storage equipment and the photovoltaic equipment, thereby improving the regulation accuracy of the flexible interconnection device in the substation area.

[0031] As a preferred solution, obtaining the real-time load data of the substation area and the substation area regulation requirement value, and inputting the real-time load data of the substation area and the substation area regulation requirement value into the actual regulation demand calculation model of the substation area to determine the actual regulation demand value of the substation area specifically includes:

[0032] Obtain the real-time load data of the substation area and the substation area regulation requirement value;

[0033] Input the real-time load data of the substation area into the load prediction function of the substation area to determine the load prediction data of the substation area;

[0034] After determining that the substation area needs to be regulated according to the substation area load prediction data, the substation area real-time load data, and the substation area heavy-load boundary value, substitute the substation area regulation requirement value into the substation area regulation requirement value variable term, and substitute the substation area real-time load data into the substation area real-time load variable term, and then calculate the substation area actual regulation demand value based on the substation area actual regulation demand calculation function.

[0035] In this preferred solution, by obtaining the substation area real-time load data and the substation area regulation requirement value, and then obtaining the substation area load prediction data; through the substation area load prediction data, the substation area real-time load data, and the substation area heavy-load boundary value, it is possible to make the judgment on whether the substation area needs to be regulated not only consider the current substation area load, but also consider the load fluctuation situation in a future period of time, thus avoiding inaccurate regulation of the substation area flexible interconnection device caused by incorrect judgment; through the substation area real-time load data and the substation area heavy-load boundary value, it is possible to make the calculated substation area actual regulation demand value not only consider the actual situation of the substation area load change, but also consider the influence of other external factors such as the regulation instructions of the superior power system, realizing the integration of multi-factor demands, and further optimizing the comprehensiveness and accuracy of the regulation of the substation area flexible interconnection device.

[0036] As a preferred solution, solving the substation area flexible resource regulation model according to the substation area actual regulation demand value to determine the coordinated regulation value of the substation area power equipment specifically includes:

[0037] Substitute the substation area actual regulation demand value into the regulation demand constraint, and according to the preset load coordinated regulation amount solving algorithm, combine the regulation potential constraint, the source-load non-canceling regulation constraint, and the regulation demand constraint to perform iterative solution on the load balance optimization objective function until the preset iteration termination condition is met, and complete the iteration of the load balance optimization objective function to determine the load coordinated regulation amount of each load storage device and each photovoltaic device in the substation area;

[0038] Determine the coordinated regulation value of the substation area power equipment according to the load coordinated regulation amount of each load storage device and each photovoltaic device in the substation area.

[0039] In this preferred solution, by substituting the substation area actual regulation demand value into the regulation demand constraint and performing iterative solution on the load balance optimization objective function in combination with the regulation potential constraint, the source-load non-canceling regulation constraint, and the regulation demand constraint, it is ensured that the load coordinated regulation amount of each load storage device and each photovoltaic device in the substation area obtained can not only meet the requirements of the substation area power equipment regulation at the same time, but also reduce the flexible load difference between different power equipment, thus improving the regulation effect of the substation area flexible interconnection device; by separately obtaining the load coordinated regulation amount for different types of power equipment, the regulation target of the substation area flexible interconnection device can be refined, thus improving the regulation accuracy of the substation area flexible interconnection device.

[0040] As a preferred solution, obtaining the real-time operation data of the power equipment in the substation area, and regulating the flexible interconnection device in the substation area according to the cooperative regulation value of the power equipment in the substation area and the real-time operation data of the power equipment in the substation area, specifically including:

[0041] Obtain the real-time operation data of the power equipment in the substation area, where the real-time operation data of the power equipment in the substation area includes: the real-time load active power of the load storage equipment and the real-time photovoltaic active power output of the photovoltaic equipment;

[0042] Compare the load cooperative regulation amount of each load storage equipment with the real-time load active power to obtain the first comparison result corresponding to each load storage equipment;

[0043] Compare the load cooperative regulation amount of each photovoltaic equipment with the real-time photovoltaic active power output to obtain the second comparison result corresponding to each photovoltaic equipment;

[0044] Based on the first comparison result corresponding to each load storage equipment and the second comparison result corresponding to each photovoltaic equipment, regulate the flexible interconnection device in the substation area.

[0045] This preferred solution compares with the respective historical working characteristics for different types of power equipment, thereby reasonably allocating power resources, further refining the regulation target of the flexible interconnection device in the substation area, and thus improving the regulation accuracy of the flexible interconnection device in the substation area.

[0046] Correspondingly, an embodiment of the present invention provides a regulation system for a flexible interconnection device in a substation area, including: a substation area data acquisition module, a construction module for a calculation model of the actual regulation demand in the substation area, a construction module for a regulation model of flexible resources in the substation area, a solution module for the actual regulation demand value in the substation area, a solution module for the cooperative regulation value of the power equipment in the substation area, and a regulation module for the flexible interconnection device in the substation area;

[0047] Among them, the substation area data acquisition module is used to acquire the historical load data of the substation area, the heavy load boundary value of the substation area, the power equipment information in the substation area, and the historical operation data of the power equipment in the substation area;

[0048] The construction module for the calculation model of the actual regulation demand in the substation area is used to construct a calculation model of the actual regulation demand in the substation area according to the historical load data of the substation area and the heavy load boundary value of the substation area;

[0049] The construction module for the regulation model of flexible resources in the substation area is used to construct a regulation model of flexible resources in the substation area according to the power equipment information in the substation area and the historical operation data of the power equipment in the substation area;

[0050] The solution module for the actual regulation demand value in the substation area is used to obtain the real-time load data of the substation area and the substation area regulation requirement value, and input the real-time load data of the substation area and the substation area regulation requirement value into the calculation model of the actual regulation demand in the substation area to determine the actual regulation demand value in the substation area;

[0051] The module for solving the collaborative regulation value of the power equipment in the substation area is used to solve the flexible resource regulation model of the substation area according to the actual regulation demand value of the substation area, and determine the collaborative regulation value of the power equipment in the substation area;

[0052] The module for regulating the flexible interconnection device in the substation area is used to obtain the real-time operation data of the power equipment in the substation area, and regulate the flexible interconnection device in the substation area according to the collaborative regulation value of the power equipment in the substation area and the real-time operation data of the power equipment in the substation area.

[0053] It can be understood that, compared with the prior art, the present system constructs a calculation model for the actual regulation demand of the substation area through the historical load data of the substation area and the heavy load boundary value of the substation area, then constructs a flexible resource regulation model of the substation area through the power equipment information of the substation area and the historical operation data of the power equipment in the substation area, then calculates the actual regulation demand value of the substation area according to the real-time load data of the substation area and the regulation requirement value of the substation area, and then solves the flexible resource regulation model of the substation area through the actual regulation demand value of the substation area, so as to determine the collaborative regulation value of the power equipment in the substation area, and then realize the accurate regulation of the flexible interconnection device in the substation area by combining the power equipment information of the substation area. By integrating the historical load data of the substation area, the heavy load boundary value of the substation area, the power equipment information of the substation area and the historical operation data of the power equipment in the substation area, the calculation model for the actual regulation demand of the substation area and the flexible resource regulation model of the substation area can comprehensively and deeply analyze the characteristics of different power equipment in the substation area, accurately reflect the state change trend of the power resources in the substation area, and then realize the refined and accurate regulation of different flexible loads for different power equipment; then, by solving the actual regulation demand value of the substation area through the real-time load data of the substation area and the regulation requirement value of the substation area, the actual regulation demand value of the substation area can not only consider the actual situation of the load change in the substation area, but also consider the influence of other external factors such as the regulation instructions of the superior power system, realizing the integration of multi-factor demands, and further optimizing the comprehensiveness and accuracy of the regulation of the flexible interconnection device in the substation area; by solving the collaborative regulation value of the power equipment in the substation area and then regulating the flexible interconnection device in the substation area through the power equipment information of the substation area and the historical operation data of the power equipment in the substation area, the collaborative regulation of multiple devices in the substation area can be realized, the characteristics of different power equipment in the substation area can be fully explored, and then the regulation of the flexible interconnection device in the substation area is made more accurate, thus reducing the influence of unbalanced load in the substation area and ensuring the stable and efficient operation of the power system.

[0054] Correspondingly, an embodiment of the present invention provides a terminal device, including:

[0055] One or more processors;

[0056] A memory, coupled to the processor, for storing one or more programs;

[0057] When the one or more programs are executed by the one or more processors, the one or more processors implement a method for regulating a flexible interconnection device in a substation area as described above.

[0058] Correspondingly, an embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored. The computer program is executed by a processor to implement a method for regulating a flexible interconnection device in a substation area as described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] Figure 1 : A flowchart of steps of a method for regulating a flexible interconnection device in a substation area provided by an embodiment of the present invention;

[0060] Figure 2 : A schematic structural diagram of a system for regulating a flexible interconnection device in a substation area provided by an embodiment of the present invention;

[0061] Among them, 201: Substation area data acquisition module; 202: Substation area actual regulation demand calculation model construction module; 203: Substation area flexible resource regulation model construction module; 204: Substation area actual regulation demand value solving module; 205: Substation area power equipment collaborative regulation value solving module; 206: Substation area flexible interconnection device regulation module. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0062] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0063] With the development of society, the demand for electricity is increasing day by day. In the current power system, the difference between peak and valley electricity consumption is becoming more and more obvious. During peak electricity consumption periods, the grid load rises sharply, which may lead to overloading of power equipment and increase the risk of power outages; during off-peak electricity consumption periods, the utilization rate of power equipment is low, resulting in a waste of power resources. On the other hand, the large-scale access of renewable energy (such as solar energy and wind energy) to the grid brings huge challenges to the stable operation of the power system. When the renewable energy generation is excessive, it is difficult to effectively absorb it; when the generation is insufficient, power needs to be quickly supplemented. Therefore, there is an urgent need to adjust the power supply balance in the substation area in real time through flexible load control technology to adapt to the large-scale access of renewable energy. The flexible interconnection device can realize the flexible load control of the substation area. It can temporarily adjust or transfer some non-critical loads, thus effectively reducing the burden on the grid and ensuring the stable operation of the system. However, the existing flexible interconnection device control strategy does not consider the decomposition and coordination problems of different types of flexible loads, and lacks a comprehensive and in-depth consideration of the coordinated operation and load balance between the power sources, loads and energy storage in the distribution network. This deficiency makes it difficult to effectively integrate and coordinate the control of the characteristics of various flexible loads during the application process of the flexible interconnection device control. Specifically, on the one hand, the existing flexible interconnection device control strategy does not conduct in-depth research on the decomposition and coordination of different types of flexible loads, and cannot accurately control according to the characteristics of various flexible loads, resulting in poor control effects. On the other hand, there is a lack of comprehensive consideration in the coordinated operation and load balance of the power sources, loads and energy storage in the substation area distribution network. The power sources, loads and energy storage cannot effectively cooperate with each other, resulting in low power distribution efficiency; at the same time, improper load balance handling is likely to cause uneven power distribution, which not only affects the operation efficiency of the grid, but also increases potential safety hazards, making it difficult to play the role of the flexible interconnection device in the substation area to reduce the burden on the grid and stabilize the system operation, and unable to meet the power control requirements after the large-scale access of renewable energy. Therefore, the embodiments of the present invention provide a control method, system, device and storage medium for a flexible interconnection device in a substation area, so as to solve the problem of inaccurate control of the flexible interconnection device in the substation area in the prior art.

[0064] Embodiment 1

[0065] To solve the problem of inaccurate control of the flexible interconnection device in the substation area in the prior art, please refer to Figure 1 , which is a step flow chart of a control method for a flexible interconnection device in a substation area provided by an embodiment of the present invention, including steps S101 to S106.

[0066] Step S101: Obtain the historical load data of the substation area, the heavy load boundary value of the substation area, the power equipment information of the substation area, and the historical operation data of the power equipment in the substation area.

[0067] In an optional embodiment, the heavy load boundary value of the substation area is defined as P lim, which is used to represent the maximum load threshold that the substation area is allowed to bear; define the historical load data of the substation area as represents the historical load of the substation area at the t-th moment on the k-th day; the substation area power equipment information can be obtained through the equipment manuals of each power equipment in the substation area, testing the power equipment, etc. The historical operation data of the substation area power equipment in this embodiment can be obtained by measuring each power equipment in the substation area. The measurement time interval is 15 minutes and the time span is one month.

[0068] Step S102: Construct a calculation model for the actual regulation demand of the substation area according to the historical load data of the substation area and the heavy load boundary value of the substation area.

[0069] In this embodiment, the constructing a calculation model for the actual regulation demand of the substation area according to the historical load data of the substation area and the heavy load boundary value of the substation area specifically includes:

[0070] Construct a function for the degree of change of the substation area load according to the historical load data of the substation area;

[0071] Determine the variable term of the substation area load change according to the function for the degree of change of the substation area load, and construct a load prediction function for the substation area according to the variable term of the substation area load change;

[0072] Obtain the real-time load variable term of the substation area and the variable term of the substation area regulation requirement value;

[0073] Construct a calculation function for the actual regulation demand of the substation area according to the real-time load variable term of the substation area, the variable term of the substation area regulation requirement value and the heavy load boundary value of the substation area;

[0074] Construct a calculation model for the actual regulation demand of the substation area according to the function for the degree of change of the substation area load, the load prediction function for the substation area and the calculation function for the actual regulation demand of the substation area.

[0075] In an alternative embodiment, the function for the degree of change of the substation area load is specifically shown in the following formula (1),

[0076]

[0077] In formula (1), δ t represents the degree of change of the substation area load at the t-th moment, N day represents the number of historical days, represents the historical load data at the t-th moment on the k-th day, represents the historical load data at the (t - 1)-th moment on the k-th day;

[0078] The load prediction function for the substation area is specifically shown in the following formula (2). In the load prediction function for the substation area, the variable term of the substation area load change refers to δ t ;

[0079] P today,t+1= P today,t (δ t + 1)(2);

[0080] In formula (2), P today,t+1 represents the predicted data of the substation area load at the time t + 1 on the current day; P today,t represents the real-time load data of the substation area at the time t on the current day; δ t represents the degree of change in the substation area load at the time t;

[0081] The real-time load variable term of the substation area is defined as P today,t , that is, the real-time load variable term of the substation area is a mathematical variable term used to substitute the real-time load data of the substation area at the time t on the current day. The variable term of the substation area regulation requirement value is defined as P ins,t , that is, the variable term of the substation area regulation requirement value is a mathematical variable term used to substitute the substation area regulation requirement value P ins,t ;

[0082] The specific calculation function of the actual regulation demand of the substation area is shown in the following formula (3),

[0083]

[0084] In formula (3), P need,t represents the actual regulation demand value of the substation area at the time t, P ins,t is the substation area regulation requirement value at the time t, P today,t is the real-time load data of the substation area at the time t on the current day, P lim is the heavy load boundary value of the substation area;

[0085] Based on the substation area load change degree function (formula (1)), the substation area load prediction function (formula (2)) and the substation area actual regulation demand calculation function (formula (3)), a substation area actual regulation demand calculation model is constructed.

[0086] In this embodiment, the substation area load change degree function is constructed through historical load data, and then the substation area load prediction function is constructed, which can accurately quantify the substation area load fluctuation intensity and predict the future load of the substation area. The heavy load boundary value of the substation area is embedded in the substation area actual regulation demand calculation function, so that the substation area actual regulation demand calculation function can consider the limitation requirements of the substation area load, so that the substation area actual regulation demand calculation model can realize the double correction of the long-term law and short-term fluctuation of the load, improve the real-time performance and accuracy of the substation area actual regulation demand calculation model, and further make the regulation of the substation area flexible interconnection device more accurate.

[0087] Step S103: Construct a substation area flexible resource regulation model according to the substation area power equipment information and the historical operation data of the substation area power equipment.

[0088] In this embodiment, constructing a flexible resource regulation model for the substation area based on the substation area power equipment information and the historical operation data of the substation area power equipment specifically includes:

[0089] The substation area power equipment information includes: the number of load storage devices, the number of photovoltaic devices, the upper limit value of the regulation capacity of the load storage devices, the lower limit value of the regulation capacity of the load storage devices, and the upper limit value of the regulation capacity of the photovoltaic devices;

[0090] The historical operation data of the substation area power equipment includes: the historical active power of the load of the load storage devices and the historical photovoltaic active power output of the photovoltaic devices;

[0091] Construct a load balancing optimization objective function based on the historical active power of the load of the load storage devices and the historical photovoltaic active power output of the photovoltaic devices;

[0092] Construct regulation potential constraints, source-load non-canceling regulation constraints, and regulation demand constraints based on the number of load storage devices, the number of photovoltaic devices, the upper limit value of the regulation capacity of the load storage devices, the lower limit value of the regulation capacity of the load storage devices, and the upper limit value of the regulation capacity of the photovoltaic devices;

[0093] Construct a flexible resource regulation model for the substation area based on the load balancing optimization objective function, regulation potential constraints, source-load non-canceling regulation constraints, and regulation demand constraints.

[0094] In this embodiment, a load balancing objective function is constructed through the historical active power of the load of the load storage devices and the historical photovoltaic active power output of the photovoltaic devices, so that the load balancing objective function can fully measure the working characteristics of the load storage devices and photovoltaic devices in the substation area, and thus accurately characterize the superimposed load fluctuations in the substation area. By constructing regulation potential constraints, source-load non-canceling regulation constraints, and regulation demand constraints, it can not only accurately reflect the differences in the flexible loads of different power equipment in the substation area, but also ensure that the substation area power equipment operates within a safe range, enabling the flexible resource regulation model for the substation area to accurately characterize the relationship between the substation area power equipment, flexible interconnection device regulation, and load balancing, thereby ensuring the accuracy of the flexible interconnection device regulation in the substation area.

[0095] In this embodiment, the load balancing optimization objective function is specifically as shown in the following formula (4);

[0096]

[0097] In formula (4), P 1,m,t represents the active power of the load of the m-th load storage device at time t; represents the regulation amount of the m-th load storage device at time t; M is the total number of load storage devices; P 2,n,t represents the photovoltaic active power output of the n-th photovoltaic device at time t; represents the regulation amount of the n-th photovoltaic device at time t; P1,m,t-1 represents the active power of the m-th energy storage device at the (t - 1)th moment; P 2,n,t-1 represents the active power output of the n-th photovoltaic device at the (t - 1)th moment; N is the total number of photovoltaic devices.

[0098] In this embodiment, the load balancing objective function is constructed based on the historical active power of the energy storage device and the historical active power output of the photovoltaic device, so that the load balancing objective function can consider the superposition load volatility in the substation area, and then can dynamically allocate the regulation amounts of the energy storage device and the photovoltaic device, thereby improving the regulation accuracy of the flexible interconnection device in the substation area.

[0099] In an alternative embodiment, the regulation potential constraint is shown in the following formula (5), the source-load non-canceling regulation constraint is shown in the following formula (6), and the regulation demand constraint is shown in the following formula (7);

[0100]

[0101] In formulas (5), (6), and (7), represents the upper limit value of the regulation capacity of the m-th energy storage device at the t-th moment, represents the lower limit value of the regulation capacity of the m-th energy storage device at the t-th moment, represents the regulation amount of the m-th energy storage device at the t-th moment; represents the upper limit value of the regulation capacity of the n-th photovoltaic device at the t-th moment; represents the regulation amount of the n-th photovoltaic device at the t-th moment; formula (6) is used to indicate that the regulation amounts of the energy storage device and the photovoltaic device need to have different signs, that is, the regulation amounts cannot cancel each other out; M is the total number of energy storage devices; N is the total number of photovoltaic devices; P need,t is the actual regulation demand value of the substation area at the t-th moment.

[0102] Step S104: Obtain the real-time load data of the substation area and the substation area regulation requirement value, and input the real-time load data of the substation area and the substation area regulation requirement value into the substation area actual regulation demand calculation model to determine the substation area actual regulation demand value.

[0103] It should be noted that the substation area regulation requirement value refers to the external substation area regulation demand value, such as the regulation demand value from the superior power system of the substation area.

[0104] In this embodiment, the obtaining of the real-time load data of the substation area and the substation area regulation requirement value, and inputting the real-time load data of the substation area and the substation area regulation requirement value into the substation area actual regulation demand calculation model to determine the substation area actual regulation demand value specifically includes:

[0105] Obtain the real-time load data of the substation area and the substation area regulation requirement value;

[0106] Input the real-time load data of the substation area into the load prediction function of the substation area to determine the load prediction data of the substation area;

[0107] After determining that the substation area needs to be regulated according to the load prediction data of the substation area, the real-time load data of the substation area, and the heavy-load boundary value of the substation area, substitute the regulation requirement value of the substation area into the variable term of the regulation requirement value of the substation area, and substitute the real-time load data of the substation area into the variable term of the real-time load of the substation area, and then calculate the actual regulation demand value of the substation area based on the actual regulation demand calculation function of the substation area.

[0108] In an alternative embodiment, obtain the real-time load data of the substation area and the regulation requirement value of the substation area, and substitute the real-time load data of the substation area into the load prediction function of the substation area to obtain the load prediction data of the substation area; then judge the magnitude relationship among the load prediction data of the substation area, the real-time load data of the substation area, and the heavy-load boundary value of the substation area. If the load prediction data of the substation area or the real-time load data of the substation area exceeds the heavy-load boundary value of the substation area, it is determined that the substation area needs to be regulated; then substitute the regulation requirement value of the substation area into the variable term of the regulation requirement value of the substation area, and substitute the real-time load data of the substation area into the variable term of the real-time load of the substation area, and solve the actual regulation demand calculation function of the substation area (i.e., formula (3)) to obtain the actual regulation demand value of the substation area.

[0109] In this embodiment, by obtaining the real-time load data of the substation area and the regulation requirement value of the substation area, and then obtaining the load prediction data of the substation area; through the load prediction data of the substation area, the real-time load data of the substation area, and the heavy-load boundary value of the substation area, the judgment on whether the substation area needs to be regulated can not only consider the current load of the substation area, but also consider the load fluctuation situation in a future period of time, thus avoiding inaccurate regulation of the flexible interconnection device of the substation area caused by misjudgment; through the real-time load data of the substation area and the heavy-load boundary value of the substation area, the calculated actual regulation demand value of the substation area can not only consider the actual situation of the load change of the substation area, but also consider the influence of other external factors such as the regulation instructions of the superior power system, realizing the integration of multi-factor demands, and further optimizing the comprehensiveness and accuracy of the regulation of the flexible interconnection device of the substation area.

[0110] Step S105: Solve the flexible resource regulation model of the substation area according to the actual regulation demand value of the substation area to determine the coordinated regulation value of the power equipment in the substation area.

[0111] In this embodiment, the solving the flexible resource regulation model of the substation area according to the actual regulation demand value of the substation area to determine the coordinated regulation value of the power equipment in the substation area specifically includes:

[0112] Substitute the actual regulation demand value of the substation area into the regulation demand constraint, and according to the preset load collaborative regulation quantity solving algorithm, combined with the regulation potential constraint, the source-load non-canceling regulation constraint and the regulation demand constraint, perform iterative solution on the load balance optimization objective function until the preset iteration termination condition is met, complete the iteration of the load balance optimization objective function, and determine the load collaborative regulation quantity of each energy storage device and each photovoltaic device in the substation area;

[0113] Determine the collaborative regulation value of the power equipment in the substation area according to the load collaborative regulation quantity of each energy storage device and each photovoltaic device in the substation area.

[0114] In an optional embodiment, substitute the actual regulation demand value P of the substation area need,t into the regulation demand constraint (i.e., formula (7)), and then according to the particle swarm optimization algorithm (i.e., the preset load collaborative regulation quantity solving algorithm), perform iterative solution on the load balance optimization objective function under the conditions of meeting the regulation potential constraint, the source-load non-canceling regulation constraint and the regulation demand constraint until the number of iterations for the iterative solution of the load balance optimization objective function reaches 30 times (i.e., the preset iteration termination condition in this embodiment is set to 30 times), complete the iteration of the load balance optimization objective function, and determine the load collaborative regulation quantity of each energy storage device in the substation area and the load collaborative regulation quantity of each photovoltaic device Then, determine the collaborative regulation value of the power equipment in the substation area according to the load collaborative regulation quantity of each energy storage device and each photovoltaic device in the substation area.

[0115] Specifically, the preset load collaborative regulation quantity solving algorithm in this embodiment can also use other iterative algorithms such as the wolf pack algorithm, and the preset iteration termination condition in this embodiment can also use a threshold as the iteration termination condition.

[0116] It should be noted that the Particle Swarm Optimization Algorithm (PSO) is a stochastic heuristic search algorithm based on group iterative optimization. In the process of optimization and solution, after each iteration of each particle, in addition to having corresponding position and velocity, there is also an objective function value obtained from the objective function. The position of each particle represents a feasible solution to the problem. The direction and distance of each particle's movement in each iteration are determined by the particle's velocity. The particle's velocity cannot be too large or too small. The objective function value of the particle represents the quality of the particle. PSO is not completely random in each iteration process, but is updated by tracking two extreme values, the local optimal solution and the global optimal solution. The position vector of particle i in the D-dimensional space is x i =[x i1 ,x i2 ,x i3 ,…,x iD, the velocity vector is v i =[v i1 ,v i2 ,v i3 ,…,v iD . The iterative formulas for the particle velocity and position are as follows:

[0117]

[0118] x ij (k+1) =x ij (k) +v ij (k+1) ;

[0119] In the formula, k represents the number of iterations of the particle; represents the velocity of particle i in the j -th dimension at the k -th iteration; ω is called the inertia weight coefficient, which is a kind of maintenance of the original motion state of the particle; is the local optimal solution found by particle i at the k -th iteration; is the global optimal solution found by particle i at the k -th iteration; c1 and c1 are called learning factors; rand1 and rand2 are random numbers between [0, 1]. Generally speaking, the particle swarm algorithm hopes to have better exploration ability at the beginning of the flight, and with the increase of the number of iterations, especially in the later stage of the flight, it hopes to have better exploitation ability. Therefore, it is hoped that the relationship weight can be dynamically adjusted. Adopt the linear decreasing inertia weight change method. Suppose the value range of the inertia weight is [w min ,w max , and the maximum number of iterations is k max , then the inertia weight at the k -th iteration is calculated according to the following formula: ω = ω max -k(ω max -ω min ) / k max .

[0120] The above description of the relevant formulas of the Particle Swarm Optimization Algorithm (PSO) belongs to the conventional application of those skilled in the art. This application is only for adaptive explanation and will not be elaborated here too much.

[0121] In this embodiment, by substituting the actual regulation demand value of the substation area into the regulation demand constraint, and combining the regulation potential constraint, the source-load non-canceling regulation constraint and the regulation demand constraint to iteratively solve the load balancing optimization objective function, it is ensured that the coordinated regulation amount of each load storage device and each photovoltaic device in the substation area obtained can not only meet the requirements of the power equipment regulation in the substation area at the same time, but also reduce the flexibility load difference between different power equipment, thereby improving the regulation effect of the flexible interconnection device in the substation area; by separately obtaining the coordinated regulation amount of different types of power equipment, the regulation target of the flexible interconnection device in the substation area can be refined, thereby improving the regulation accuracy of the flexible interconnection device in the substation area.

[0122] Step S106: Obtain the real-time operation data of the power equipment in the substation area, and regulate the flexible interconnection device in the substation area according to the coordinated regulation value of the power equipment in the substation area and the real-time operation data of the power equipment in the substation area.

[0123] In this embodiment, the obtaining the real-time operation data of the power equipment in the substation area and regulating the flexible interconnection device in the substation area according to the coordinated regulation value of the power equipment in the substation area and the real-time operation data of the power equipment in the substation area specifically includes:

[0124] Obtain the real-time operation data of the power equipment in the substation area, and the real-time operation data of the power equipment in the substation area includes: the real-time load active power of the load storage device and the real-time photovoltaic active power output of the photovoltaic device;

[0125] Compare the coordinated regulation amount of each load storage device with the real-time load active power to obtain the first comparison result corresponding to each load storage device;

[0126] Compare the coordinated regulation amount of each photovoltaic device with the real-time photovoltaic active power output to obtain the second comparison result corresponding to each photovoltaic device;

[0127] Based on the first comparison result corresponding to each load storage device and the second comparison result corresponding to each photovoltaic device, regulate the flexible interconnection device in the substation area.

[0128] In an optional embodiment, after obtaining the coordinated regulation amount of each load storage device and the coordinated regulation amount of each photovoltaic device for the load storage device, compare with the real-time load active power P 1,m,t to obtain the first comparison result; where when the load of the load storage device m needs to be completely cut off, and at this time, the flexible interconnection device in the substation area is regulated, that is, the flexible interconnection device in the substation area directly disconnects the switch of the load storage device m, when When the load of the energy storage device m needs to be partially reduced, the flexible interconnection device in the distribution area is regulated at this time, that is, the flexible switch of the energy storage device m is controlled by the flexible interconnection device in the distribution area to reduce the load.

[0129] For the photovoltaic device, is compared with the real-time photovoltaic active power output to obtain a second comparison result. When the photovoltaic active power output of the photovoltaic device n needs to be completely cut off. At this time, the flexible interconnection device in the distribution area is regulated, that is, the flexible interconnection device in the distribution area directly disconnects the switch of the photovoltaic device n; when the photovoltaic active power output of the photovoltaic device n needs to be partially reduced. At this time, the flexible interconnection device in the distribution area is regulated, that is, the flexible interconnection device in the distribution area controls the flexible switch of the photovoltaic device n to reduce the load.

[0130] In this embodiment, by comparing different types of power equipment with their respective historical working characteristics, electric power resources are reasonably allocated, and the goal of regulating the flexible interconnection device in the distribution area is further refined, thereby improving the regulation accuracy of the flexible interconnection device in the distribution area.

[0131] Steps S101 to S106 of the embodiment of the present invention effectively overcome the problem of inaccurate regulation of the flexible interconnection device in the distribution area in the prior art. On the basis of collecting various types of data, the present invention establishes a flexible resource regulation model for the flexible resources in the distribution area based on the collaboration of multiple flexible resources, and deeply analyzes the characteristics of the energy storage device and the photovoltaic device. Using the load balancing optimization objective function that considers the minimum superimposed load volatility in the distribution area, combined with constraint conditions such as regulation potential and source-load non-cancellation regulation, the accurate regulation amount of each device is calculated, and differential and refined regulation of different flexible loads is realized, significantly improving the regulation effect. In terms of the collaborative operation and load balancing of the source, load, and energy storage in the distribution network, the present invention comprehensively grasps the real-time state and change trend of the source, load, and energy storage by collecting the historical load data of the distribution area, the heavy load boundary value of the distribution area, the power equipment information of the distribution area, and the historical operation data of the power equipment in the distribution area. The established calculation model for the actual regulation demand in the distribution area, combined with the risks in the distribution area and the superior instructions, clarifies the regulation direction and intensity; the flexible resource regulation model in the distribution area further coordinates the relationship between the source, load, and energy storage, and reasonably allocates electric power resources according to the regulation amount of each device, enabling efficient collaborative operation between the source, load, and energy storage in the distribution network. At the same time, under the action of the load balancing optimization objective function, the power distribution in each area is more reasonable, effectively solving the problem of load imbalance and ensuring the stable and efficient operation of the power system.

[0132] In this embodiment, a calculation model for the actual regulation demand of the substation area is constructed based on the historical load data of the substation area and the overload boundary value of the substation area. Then, a flexible resource regulation model for the substation area is constructed based on the power equipment information of the substation area and the historical operation data of the power equipment in the substation area. Then, the actual regulation demand value of the substation area is calculated according to the real-time load data of the substation area and the regulation requirement value of the substation area. Then, the flexible resource regulation model of the substation area is solved by the actual regulation demand value of the substation area, so as to determine the coordinated regulation value of the power equipment in the substation area, and then the accurate regulation of the flexible interconnection device in the substation area is realized by combining the power equipment information in the substation area. By integrating the historical load data of the substation area, the overload boundary value of the substation area, the power equipment information of the substation area and the historical operation data of the power equipment in the substation area, this embodiment enables the calculation model of the actual regulation demand of the substation area and the flexible resource regulation model of the substation area to comprehensively and deeply analyze the characteristics of different power equipment in the substation area, accurately reflect the state change trend of the power resources in the substation area, and then realize the refined and accurate regulation of different flexible loads of different power equipment; then, by solving the actual regulation demand value of the substation area through the real-time load data of the substation area and the regulation requirement value of the substation area, the actual regulation demand value of the substation area can not only consider the actual situation of the load change in the substation area, but also consider the influence of other external factors such as the regulation instructions of the superior power system, realizing the integration of multi-factor demands, and further optimizing the comprehensiveness and accuracy of the regulation of the flexible interconnection device in the substation area; by solving the coordinated regulation value of the power equipment in the substation area and then regulating the flexible interconnection device in the substation area through the power equipment information of the substation area and the historical operation data of the power equipment in the substation area, the coordinated regulation of multiple devices in the substation area can be realized, the characteristics of different power equipment in the substation area can be fully explored, and then the regulation of the flexible interconnection device in the substation area is more accurate, thus reducing the influence of unbalanced load in the substation area and ensuring the stable and efficient operation of the power system.

[0133] Embodiment 2

[0134] Please refer to Figure 2 , which is a schematic structural diagram of a flexible interconnection device regulation system for a substation area provided by an embodiment of the present invention, including: a substation area data acquisition module 201, a substation area actual regulation demand calculation model construction module 202, a substation area flexible resource regulation model construction module 203, a substation area actual regulation demand value solving module 204, a substation area power equipment coordinated regulation value solving module 205, and a substation area flexible interconnection device regulation module 206;

[0135] Among them, the substation area data acquisition module 201 is used to acquire the historical load data of the substation area, the overload boundary value of the substation area, the power equipment information of the substation area, and the historical operation data of the power equipment in the substation area.

[0136] The substation area actual regulation demand calculation model construction module 202 is used to construct a substation area actual regulation demand calculation model according to the historical load data of the substation area and the overload boundary value of the substation area.

[0137] In this embodiment, the building module 202 of the actual regulation demand calculation model for the substation area includes: a building unit of the actual regulation demand calculation model for the substation area;

[0138] The building unit of the actual regulation demand calculation model for the substation area is used to build a function of the load change degree of the substation area according to the historical load data of the substation area;

[0139] Determine the load change variable term of the substation area according to the function of the load change degree of the substation area, and build a load prediction function for the substation area according to the load change term of the substation area;

[0140] Obtain the real-time load variable term of the substation area and the variable term of the regulation requirement value of the substation area;

[0141] Build a calculation function of the actual regulation demand for the substation area according to the real-time load variable term of the substation area, the variable term of the regulation requirement value of the substation area and the overload boundary value of the substation area;

[0142] Build an actual regulation demand calculation model for the substation area according to the function of the load change degree of the substation area, the load prediction function for the substation area and the calculation function of the actual regulation demand for the substation area.

[0143] The building module 203 of the flexible resource regulation model for the substation area is used to build a flexible resource regulation model for the substation area according to the power equipment information of the substation area and the historical operation data of the power equipment in the substation area.

[0144] In this embodiment, the building module 203 of the flexible resource regulation model for the substation area includes: a building unit of the flexible resource regulation model for the substation area;

[0145] In the building unit of the flexible resource regulation model for the substation area, the power equipment information of the substation area includes: the number of load storage equipment, the number of photovoltaic equipment, the upper limit value of the regulation capacity of the load storage equipment, the lower limit value of the regulation capacity of the load storage equipment and the upper limit value of the regulation capacity of the photovoltaic equipment; the historical operation data of the power equipment in the substation area includes: the historical active power of the load of the load storage equipment and the historical photovoltaic active power output of the photovoltaic equipment;

[0146] The building unit of the flexible resource regulation model for the substation area is used to build an optimization objective function for load balance according to the historical active power of the load of the load storage equipment and the historical photovoltaic active power output of the photovoltaic equipment;

[0147] Build regulation potential constraints, source-load non-offset regulation constraints and regulation demand constraints according to the number of load storage equipment, the number of photovoltaic equipment, the upper limit value of the regulation capacity of the load storage equipment, the lower limit value of the regulation capacity of the load storage equipment and the upper limit value of the regulation capacity of the photovoltaic equipment;

[0148] Build a flexible resource regulation model for the substation area according to the optimization objective function for load balance, the regulation potential constraints, the source-load non-offset regulation constraints and the regulation demand constraints.

[0149] In this embodiment, the construction unit of the flexible resource regulation model for the substation area includes: a load balancing optimization objective function subunit;

[0150] In the load balancing optimization objective function subunit, the load balancing optimization objective function specifically includes:

[0151]

[0152] Among them, P 1,m,t represents the active power of the load of the m-th load-storage device at time t; represents the regulation amount of the m-th load-storage device at time t; M is the total number of load-storage devices; P 2,n,t represents the active power output of the n-th photovoltaic device at time t; represents the regulation amount of the n-th photovoltaic device at time t; P 1,m,t-1 represents the active power of the load of the m-th load-storage device at time t - 1; P 2,n,t-1 represents the active power output of the n-th photovoltaic device at time t - 1.

[0153] The module 204 for solving the actual regulation demand value of the substation area is used to obtain the real-time load data of the substation area and the regulation requirement value of the substation area, and input the real-time load data of the substation area and the regulation requirement value of the substation area into the actual regulation demand calculation model of the substation area to determine the actual regulation demand value of the substation area.

[0154] In this embodiment, the module 204 for solving the actual regulation demand value of the substation area includes: a unit for solving the actual regulation demand value of the substation area;

[0155] The unit for solving the actual regulation demand value of the substation area is used to obtain the real-time load data of the substation area and the regulation requirement value of the substation area;

[0156] Input the real-time load data of the substation area into the load prediction function of the substation area to determine the load prediction data of the substation area;

[0157] After determining that the substation area needs to be regulated according to the load prediction data of the substation area, the real-time load data of the substation area, and the heavy load boundary value of the substation area, substitute the regulation requirement value of the substation area into the variable item of the regulation requirement value of the substation area, and substitute the real-time load data of the substation area into the real-time load variable item of the substation area, and then calculate the actual regulation demand value of the substation area based on the actual regulation demand calculation function of the substation area.

[0158] The module 205 for solving the coordinated regulation value of the substation area power equipment is used to solve the flexible resource regulation model of the substation area according to the actual regulation demand value of the substation area to determine the coordinated regulation value of the substation area power equipment.

[0159] In this embodiment, the substation area power equipment collaborative regulation value solving module 205 includes: a substation area power equipment collaborative regulation value solving unit;

[0160] The substation area power equipment collaborative regulation value solving unit is configured to substitute the actual regulation demand value of the substation area into the regulation demand constraint, and according to a preset load collaborative regulation amount solving algorithm, and in combination with the regulation potential constraint, the source-load non-canceling regulation constraint and the regulation demand constraint, perform iterative solution on the load balancing optimization objective function until the preset iterative termination condition is satisfied, complete the iteration of the load balancing optimization objective function, and determine the load collaborative regulation amount of each load storage device and each photovoltaic device in the substation area;

[0161] Determine the substation area power equipment collaborative regulation value according to the load collaborative regulation amount of each load storage device and each photovoltaic device in the substation area.

[0162] The substation area flexible interconnection device regulation module 206 is configured to obtain the real-time operation data of the substation area power equipment, and regulate the substation area flexible interconnection device according to the substation area power equipment collaborative regulation value and the real-time operation data of the substation area power equipment.

[0163] In this embodiment, the substation area flexible interconnection device regulation module 206 includes: a substation area flexible interconnection device regulation unit;

[0164] The substation area flexible interconnection device regulation unit is configured to obtain the real-time operation data of the substation area power equipment, and the real-time operation data of the substation area power equipment includes: the real-time load active power of the load storage device and the real-time photovoltaic active power output of the photovoltaic device;

[0165] Compare the load collaborative regulation amount of each load storage device with the real-time load active power to obtain a first comparison result corresponding to each load storage device;

[0166] Compare the load collaborative regulation amount of each photovoltaic device with the real-time photovoltaic active power output to obtain a second comparison result corresponding to each photovoltaic device;

[0167] Regulate the substation area flexible interconnection device based on the first comparison result corresponding to each load storage device and the second comparison result corresponding to each photovoltaic device.

[0168] In this embodiment, a calculation model for the actual regulation demand of the substation area is constructed based on the historical load data of the substation area and the overload boundary value of the substation area. Then, a flexible resource regulation model for the substation area is constructed based on the power equipment information of the substation area and the historical operation data of the power equipment in the substation area. Then, the actual regulation demand value of the substation area is calculated according to the real-time load data of the substation area and the regulation requirement value of the substation area. Then, the flexible resource regulation model of the substation area is solved by the actual regulation demand value of the substation area, so as to determine the coordinated regulation value of the power equipment in the substation area, and further realize the accurate regulation of the flexible interconnection device in the substation area by combining the power equipment information of the substation area. By integrating the historical load data of the substation area, the overload boundary value of the substation area, the power equipment information of the substation area and the historical operation data of the power equipment in the substation area, this embodiment enables the actual regulation demand calculation model and the flexible resource regulation model of the substation area to comprehensively and deeply analyze the characteristics of different power equipment in the substation area, accurately reflect the state change trend of the power resources in the substation area, and further realize the refined and accurate regulation of different flexible loads for different power equipment; then, by solving the actual regulation demand value of the substation area through the real-time load data of the substation area and the regulation requirement value of the substation area, the actual regulation demand value of the substation area can not only consider the actual situation of the load change in the substation area, but also consider the influence of other external factors such as the regulation instructions of the superior power system, realizing the integration of multi-factor demands, and further optimizing the comprehensiveness and accuracy of the regulation of the flexible interconnection device in the substation area; by solving the coordinated regulation value of the power equipment in the substation area and then regulating the flexible interconnection device in the substation area through the power equipment information of the substation area and the historical operation data of the power equipment in the substation area, the coordinated regulation of multiple devices in the substation area can be realized, the characteristics of different power equipment in the substation area can be fully explored, and further the regulation of the flexible interconnection device in the substation area can be made more accurate, thereby reducing the influence of unbalanced load in the substation area and ensuring the stable and efficient operation of the power system.

[0169] Embodiment 3

[0170] Based on the above embodiment of a scheduling method for an energy storage charging and discharging device, Embodiment 3 of the present invention provides a terminal device, which includes a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor. When the processor executes the computer program, a method for regulating a flexible interconnection device in a substation area according to an embodiment of the present invention is implemented.

[0171] Exemplarily, in this embodiment, the computer program may be divided into one or more modules, and the one or more modules are stored in the memory and executed by the processor to complete the present invention. The one or more module elements may be a series of computer program instruction segments capable of performing specific functions, and the instruction segments are used to describe the execution process of the computer program in the terminal device.

[0172] The terminal device may be a computing device such as a desktop computer, a notebook, a palm computer, and a cloud server. The terminal device may include, but is not limited to, a processor and a memory.

[0173] The so-called processor may be a Central Processing Unit (CPU), or may also be other general-purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field-Programmable Gate Arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc. The processor is the control center of the terminal device, and uses various interfaces and lines to connect all parts of the entire terminal device.

[0174] Based on the above method item embodiments, a computer-readable storage medium provided by an embodiment of the present invention includes a stored computer program, wherein when the computer program runs, it controls the device where the computer-readable storage medium is located to execute a method for regulating a flexible interconnection device in a power distribution area described in any one of the above method item embodiments of the present invention.

[0175] Among them, if the modules / units integrated in the device / terminal device are implemented in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on such an understanding, to implement all or part of the processes in the above embodiment methods of the present invention, it can also be completed by a computer program instructing relevant hardware. The computer program can be stored in a computer-readable storage medium. When the computer program is executed by a processor, the steps of the above various method embodiments can be implemented. Among them, the computer program includes computer program code, and the computer program code can be in the form of source code, object code, executable file, or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, USB flash drive, mobile hard disk, magnetic disk, optical disc, computer memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier signal, telecommunication signal, and software distribution medium, etc.

[0176] In summary, in the embodiment of the present invention, a calculation model for the actual regulation demand of the power distribution area is constructed through the historical load data of the power distribution area and the overload boundary value of the power distribution area. Then, a flexible resource regulation model for the power distribution area is constructed through the power equipment information of the power distribution area and the historical operation data of the power equipment in the power distribution area. Then, the actual regulation demand value of the power distribution area is calculated based on the real-time load data of the power distribution area and the regulation requirement value of the power distribution area. Then, the flexible resource regulation model of the power distribution area is solved through the actual regulation demand value of the power distribution area, so as to determine the coordinated regulation value of the power equipment in the power distribution area, and then the accurate regulation of the flexible interconnection device in the power distribution area is realized by combining the power equipment information in the power distribution area. By integrating the historical load data, overload boundary value, power equipment information and historical operation data of the power equipment in the power distribution area in the embodiment of the present invention, the calculation model of the actual regulation demand of the power distribution area and the flexible resource regulation model of the power distribution area can comprehensively and deeply analyze the characteristics of different power equipment in the power distribution area, accurately reflect the state change trend of the power resources in the power distribution area, and then realize the refined and accurate regulation of different flexible loads for different power equipment; then, by solving the actual regulation demand value of the power distribution area through the real-time load data of the power distribution area and the regulation requirement value of the power distribution area, the actual regulation demand value of the power distribution area can not only consider the actual situation of the load change in the power distribution area, but also consider the influence of other external factors such as the regulation instructions of the superior power system, realizing the integration of multi-factor demands, and further optimizing the comprehensiveness and accuracy of the regulation of the flexible interconnection device in the power distribution area; by solving the coordinated regulation value of the power equipment in the power distribution area and then regulating the flexible interconnection device in the power distribution area through the power equipment information and historical operation data of the power equipment in the power distribution area, the coordinated regulation of multiple devices in the power distribution area can be realized, the characteristics of different power equipment in the power distribution area can be fully explored, and then the regulation of the flexible interconnection device in the power distribution area is more accurate, thus reducing the influence of unbalanced load in the power distribution area and ensuring the stable and efficient operation of the power system.

[0177] In the specific embodiments described above, the purpose, technical solutions and beneficial effects of the present invention have been further described in detail. It should be understood that the above description is only for the specific embodiments of the present invention and is not used to limit the protection scope of the present invention. It is particularly pointed out that for those skilled in the art, any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A control method for a flexible interconnection device in a substation area, characterized in that, Including: Obtain the historical load data of the substation area, the heavy load boundary value of the substation area, the power equipment information of the substation area, and the historical operation data of the power equipment in the substation area; Construct a calculation model for the actual regulation demand of the substation area according to the historical load data and the heavy load boundary value of the substation area; Construct a flexible resource regulation model for the substation area according to the power equipment information of the substation area and the historical operation data of the power equipment in the substation area; Obtain the real-time load data of the substation area and the regulation requirement value of the substation area, and input the real-time load data of the substation area and the regulation requirement value of the substation area into the calculation model for the actual regulation demand of the substation area to determine the actual regulation demand value of the substation area; Solve the flexible resource regulation model of the substation area according to the actual regulation demand value of the substation area to determine the coordinated regulation value of the power equipment in the substation area; Obtain the real-time operation data of the power equipment in the substation area, and regulate the flexible interconnection device of the substation area according to the coordinated regulation value of the power equipment in the substation area and the real-time operation data of the power equipment in the substation area.

2. The regulation method of a flexible interconnection device for a substation area according to claim 1, characterized in that The constructing a calculation model for the actual regulation demand of the substation area according to the historical load data and the heavy load boundary value of the substation area specifically includes: Construct a function for the degree of change of the load in the substation area according to the historical load data of the substation area; Determine the load change variable term according to the function for the degree of change of the load in the substation area, and construct a load prediction function according to the load change term; Obtain the real-time load variable term of the substation area and the variable term of the regulation requirement value of the substation area; Construct a calculation function for the actual regulation demand of the substation area according to the real-time load variable term of the substation area, the variable term of the regulation requirement value of the substation area, and the heavy load boundary value of the substation area; Construct a calculation model for the actual regulation demand of the substation area according to the function for the degree of change of the load in the substation area, the load prediction function, and the calculation function for the actual regulation demand of the substation area.

3. The control method of a flexible interconnection device for a transformer substation area according to claim 1, characterized in that, The constructing a flexible resource regulation model for the substation area according to the power equipment information of the substation area and the historical operation data of the power equipment in the substation area specifically includes: The power equipment information of the substation area includes: the number of load storage devices, the number of photovoltaic devices, the upper limit value of the regulation capacity of the load storage devices, the lower limit value of the regulation capacity of the load storage devices, and the upper limit value of the regulation capacity of the photovoltaic devices; The historical operation data of the power equipment in the substation area includes: the historical active power of the load of the load storage devices and the historical photovoltaic active power output of the photovoltaic devices; Construct an optimization objective function for load balancing according to the historical active power of the load of the load storage devices and the historical photovoltaic active power output of the photovoltaic devices; Construct a regulation potential constraint, a source-load non-canceling regulation constraint, and a regulation demand constraint according to the number of load storage devices, the number of photovoltaic devices, the upper limit value of the regulation capacity of the load storage devices, the lower limit value of the regulation capacity of the load storage devices, and the upper limit value of the regulation capacity of the photovoltaic devices; Construct a flexible resource regulation model for the substation area according to the optimization objective function for load balancing, the regulation potential constraint, the source-load non-canceling regulation constraint, and the regulation demand constraint.

4. The control method of a flexible interconnection device for a transformer substation area according to claim 3, wherein, The optimization objective function for load balancing specifically includes: Among them, P 1,m,t represents the active power of the load of the m-th energy storage device at time t; represents the regulation amount of the m-th energy storage device at time t; M is the total number of energy storage devices; P 2,n,t represents the active power output of the n-th photovoltaic device at time t; represents the regulation amount of the n-th photovoltaic device at time t; P 1,m,t-1 represents the active power of the load of the m-th energy storage device at time t-1; P 2,n,t-1 represents the active power output of the n-th photovoltaic device at time t-1.

5. The control method of a flexible interconnection device for a transformer substation area according to claim 2, characterized in that, The obtaining the real-time load data of the substation area and the regulation requirement value of the substation area, and inputting the real-time load data of the substation area and the regulation requirement value of the substation area into the calculation model for the actual regulation demand of the substation area to determine the actual regulation demand value of the substation area specifically includes: Obtain the real-time load data of the substation area and the regulation requirement value of the substation area; Input the real-time load data of the substation area into the load prediction function of the substation area to determine the load prediction data of the substation area; After determining that the substation area needs to be regulated according to the substation area load prediction data, the substation area real-time load data, and the substation area heavy load boundary value, substitute the substation area regulation requirement value into the substation area regulation requirement value variable item, and substitute the substation area real-time load data into the substation area real-time load variable item, and then calculate the substation area actual regulation demand value based on the substation area actual regulation demand calculation function.

6. A control method for a flexible interconnection device in a transformer substation area according to claim 3 or 4, characterized in that Solving the flexible resource regulation model of the substation area according to the actual regulation demand value of the substation area to determine the coordinated regulation value of the substation area power equipment specifically includes: Substitute the actual regulation demand value of the substation area into the regulation demand constraint, and according to the preset load coordinated regulation amount solving algorithm, combine the regulation potential constraint, the source-load non-canceling regulation constraint, and the regulation demand constraint to perform iterative solution on the load balancing optimization objective function until the preset iteration termination condition is met, complete the iteration of the load balancing optimization objective function, and determine the load coordinated regulation amount of each load storage device and each photovoltaic device in the substation area; Determine the coordinated regulation value of the substation area power equipment according to the load coordinated regulation amount of each load storage device and each photovoltaic device in the substation area.

7. A control method for a flexible interconnection device in a substation area according to claim 6, characterized in that Obtaining the real-time operation data of the substation area power equipment and regulating the flexible interconnection device of the substation area according to the coordinated regulation value of the substation area power equipment and the real-time operation data of the substation area power equipment specifically includes: Obtain the real-time operation data of the substation area power equipment, and the real-time operation data of the substation area power equipment includes: the real-time load active power of the load storage device and the real-time photovoltaic active output of the photovoltaic device; Compare the load coordinated regulation amount and the real-time load active power of each load storage device to obtain the first comparison result corresponding to each load storage device; Compare the load coordinated regulation amount and the real-time photovoltaic active output of each photovoltaic device to obtain the second comparison result corresponding to each photovoltaic device; Regulate the flexible interconnection device of the substation area based on the first comparison result corresponding to each load storage device and the second comparison result corresponding to each photovoltaic device.

8. A control system for a flexible interconnection device in a transformer substation area, characterized in that, Including: A substation area data acquisition module, a substation area actual regulation demand calculation model construction module, a substation area flexible resource regulation model construction module, a substation area actual regulation demand value solving module, a substation area power equipment coordinated regulation value solving module, and a substation area flexible interconnection device regulation module; Among them, the substation area data acquisition module is used to acquire the substation area historical load data, the substation area heavy load boundary value, the substation area power equipment information, and the substation area power equipment historical operation data; The substation area actual regulation demand calculation model construction module is used to construct a substation area actual regulation demand calculation model according to the substation area historical load data and the substation area heavy load boundary value; The substation area flexible resource regulation model construction module is used to construct a substation area flexible resource regulation model according to the substation area power equipment information and the substation area power equipment historical operation data; The substation area actual regulation demand value solving module is used to acquire the substation area real-time load data and the substation area regulation requirement value, and input the substation area real-time load data and the substation area regulation requirement value into the substation area actual regulation demand calculation model to determine the substation area actual regulation demand value; The substation area power equipment collaborative regulation value solving module is used to solve the substation area flexible resource regulation model according to the actual regulation demand value of the substation area, and determine the substation area power equipment collaborative regulation value; The substation area flexible interconnection device regulation module is used to obtain the real-time operation data of the substation area power equipment, and regulate the substation area flexible interconnection device according to the substation area power equipment collaborative regulation value and the real-time operation data of the substation area power equipment.

9. A terminal device, characterized in that, Comprising: One or more processors; A memory coupled to the processor for storing one or more programs; When the one or more programs are executed by the one or more processors, the one or more processors implement a method for regulating a substation area flexible interconnection device as described in any one of claims 1 to 7.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, The computer program is executed by a processor to implement a method for regulating a substation area flexible interconnection device as described in any one of claims 1 to 7.

Images