Load control method and device of electric power system, electric power system and electronic equipment

Abstract

The invention discloses a load control method and device of a power system, the power system and electronic equipment, and belongs to the technical field of power systems. The method comprises the following steps: acquiring each removable load of a power system; and in response to a target stability problem occurring in the power system, controlling the cuttable load to execute a cutting operation according to the corresponding priority participation factor so as to enable the power system to operate stably, wherein the priority participation factor is used for representing the removal priority of the removable load; the priority participation factor is based on the removal economic cost of the removable load, the load carbon emission cost and the target stability contribution degree; the target stability contribution degree is used for representing the influence degree of the cuttable load on the operation stability of the power system under the condition that the target stability problem occurs. According to the method, the removal economic cost of the removable load, the load carbon emission cost and the stability contribution degree are integrated, the priority participation factor is evaluated, the load is reasonably removed, the system stability problem is solved, and the control cost and the carbon emission are reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power systems, and particularly relates to a load control method and device of a power system, the power system and an electronic device. BACKGROUND

[0002] The power system fluctuates with time, season, weather and other factors, and the stability of the system can be maintained, the power quality can be improved, and the power grid operation can be optimized by performing load shedding.

[0003] At present, when the system load is cut off, the selection of the load and the cut-off load capacity mostly depends on experience. Such load cutting method is prone to overcutting problem, resulting in unnecessary economic loss, poor control effect and difficulty in meeting the stability requirement of the power system. SUMMARY

[0004] The present application aims to at least solve one of the technical problems in the related art. To this end, the present application provides a load control method and device of a power system, the power system and an electronic device, which can reasonably cut off the cut-off load, solve the system stability problem, and reduce the control cost and carbon emissions.

[0005] In a first aspect, the present application provides a load control method of a power system, the method comprising:

[0006] obtaining each cut-off load of the power system;

[0007] in response to a target stability problem occurring in the power system, controlling the cut-off load to perform a cut-off operation according to a corresponding priority participation factor, so as to make the power system operate stably;

[0008] wherein the priority participation factor is used to represent the cut-off priority of the cut-off load;

[0009] the priority participation factor is based on the cut-off economic cost, the load carbon emission cost and the target stability contribution degree of the cut-off load to the target stability problem;

[0010] the target stability contribution degree is used to represent the influence degree of the cut-off load on the operation stability of the power system in the case of the target stability problem.

[0011] According to the load control method of the power system of the present application, the cut-off economic cost, the carbon emission cost and the target stability contribution degree of each cut-off load to the target stability problem are comprehensively evaluated to determine the priority participation factor representing the cut-off priority of the load, so that the cut-off load can be reasonably cut off, the efficient and stable operation of the power system can be realized, and the control cost and carbon emissions of the power system can be effectively reduced.

[0012] According to an embodiment of the present application, the target stability contribution degree is determined by the following steps:

[0013] The stability contribution degrees of each of the excisable loads to each of the power grid stability problems are obtained by traversing the power grid stability problems in the stability problem library, the stability problem library comprising a plurality of power grid stability problems of the power system, and the target stability problem being one of the stability problems in the stability problem library;

[0014] A stability contribution degree set is constructed based on the stability contribution degrees of each of the excisable loads to each of the power grid stability problems;

[0015] The target stability contribution degree of each of the excisable loads to the target stability problem is obtained by searching the stability contribution degree set.

[0016] According to an embodiment of the present application, the stability contribution degree set is in the form of a matrix.

[0017] According to an embodiment of the present application, the target stability contribution degree of the excisable load to the target stability problem is obtained by offline simulation of the power system.

[0018] According to an embodiment of the present application, the excision economic cost is determined by the following steps:

[0019] The loss cost of the excisable load during the period of being cut out of the power system is obtained, and the restart cost of the excisable load when being connected to the power system is obtained;

[0020] Based on the loss cost and the restart cost, the excision economic cost corresponding to the excisable load is determined according to the load capacity of the excisable load.

[0021] According to an embodiment of the present application, the load carbon emission cost is determined by the following steps:

[0022] The load carbon emission factor of the excisable load and the power grid carbon emission factor of the power system are obtained;

[0023] Based on the load carbon emission factor and the power grid carbon emission factor, the load carbon emission cost corresponding to the excisable load is determined according to the load capacity of the excisable load and the green electricity amount.

[0024] According to an embodiment of the present application, the priority participation factor is determined by the following steps:

[0025] The difference between the target stability contribution degree and the excision economic cost and the load carbon emission cost is taken as the priority participation factor.

[0026] In a second aspect, the present application provides a load control device of a power system, which comprises:

[0027] an acquisition module, configured to acquire each removable load of the power system;

[0028] a processing module, configured to, in response to a target stability problem occurring in the power system, control the removable load to perform a removal operation according to a corresponding priority participation factor, so as to make the power system operate stably;

[0029] wherein the priority participation factor is used to represent a removal priority of the removable load;

[0030] the priority participation factor is based on a removal economic cost, a load carbon emission cost and a target stability contribution degree of the target stability problem of the removable load;

[0031] the target stability contribution degree is used to represent an influence degree of the removable load on the operation stability of the power system in the case of the target stability problem.

[0032] According to the load control device of the power system of the present application, by comprehensively evaluating the removal economic cost, the carbon emission cost and the target stability contribution degree of the target stability problem of each removable load, the priority participation factor representing the removal priority of the load is determined, the removable load can be reasonably removed, the efficient and stable operation of the power system is realized, and the control cost and the carbon emission of the power system can be effectively reduced.

[0033] In a third aspect, the present application provides a power system, which comprises:

[0034] a plurality of removable loads;

[0035] the load control device of the power system as described in the second aspect above, wherein the load control device is connected with the plurality of removable loads.

[0036] According to the power system of the present application, by comprehensively evaluating the removal economic cost, the carbon emission cost and the target stability contribution degree of the target stability problem of each removable load, the priority participation factor representing the removal priority of the load is determined, the removable load can be reasonably removed, the efficient and stable operation of the power system is realized, and the control cost and the carbon emission of the power system can be effectively reduced.

[0037] In a fourth aspect, the present application provides an electronic device, comprising a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor implements the load control method of the power system as described in the first aspect above when executing the computer program.

[0038] In a fifth aspect, the present application provides a non-transitory computer-readable storage medium having stored thereon a computer program, the computer program being executed by a processor to implement the load control method of the power system according to the first aspect.

[0039] In a sixth aspect, the present application provides a computer program product comprising a computer program, the computer program being executed by a processor to implement the load control method of the power system according to the first aspect.

[0040] Additional aspects and advantages of the present application will be made apparent by the following description and the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0041] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood by considering the following detailed description, from which the singular aspects become apparent.

[0042] Figure 1 is one of flow diagrams of the load control method of the power system provided by the embodiments of the present application;

[0043] Figure 2 is another of flow diagrams of the load control method of the power system provided by the embodiments of the present application;

[0044] Figure 3 is a structural diagram of the load control device of the power system provided by the embodiments of the present application;

[0045] Figure 4 is a structural diagram of the power system provided by the embodiments of the present application;

[0046] Figure 5 is a structural diagram of the electronic device provided by the embodiments of the present application.

[0047] Reference Signs:

[0048] The load control device 300 of the power system, the acquisition module 310, the processing module 320;

[0049] The cuttable load 410. DETAILED DESCRIPTION

[0050] The technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art belong to the scope of protection of the present application.

[0051] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally of a kind and do not limit the number of objects, for example, the first object can be one or more. In addition, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / ", generally indicates that the objects before and after are in a "or" relationship.

[0052] The power system load control method, the power system load control device 300, the power system, the electronic device and the readable storage medium provided by the embodiments of the present application will be described in detail below in combination with the drawings, through specific embodiments and application scenarios.

[0053] The power system load control method can be applied to a power system, and can be executed by hardware or software in the power system.

[0054] The power system load control method provided by the embodiments of the present application can be executed by an electronic device or a functional module or functional entity in the electronic device capable of implementing the power system load control method. The power system load control method provided by the embodiments of the present application will be described below taking the electronic device as an example.

[0055] As shown in the figure, the power system load control method includes steps 110 to 120. Figure 1

[0056] Step 110, acquiring each removable load 410 (also referred to as "interruptible load") of the power system.

[0057] The power system can be a system with control function and transmitting electric energy to the removable load 410.

[0058] The removable load 410 can be a load that can be selectively removed according to the operation of the power system.

[0059] It should be noted that the power system can include a plurality of removable loads 410, and the removable load 410 does not occupy power supply after being removed.

[0060] In actual execution, the power system can remove the removable load 410 to maintain the stability of the power system.

[0061] ​In this embodiment, the economic cost of shedding is an economic cost generated when a certain sheddable load 410 in the power system is shed, and the economic cost of shedding corresponds to the sheddable load 410, and the economic cost of shedding is different for different sheddable loads 410.

[0062] In actual implementation, the economic cost of shedding of the sheddable load 410 can include the cost generated when the sheddable load 410 is shed and when it is reactivated, that is, the cost generated in the process of the sheddable load 410 changing from a running state to a stopped running state and recovering from the stopped running state to the running state.

[0063] It can be understood that the load carbon emission cost is used to measure the emission cost corresponding to the carbon dioxide generated by the sheddable load 410, and the load carbon emission cost is different for different sheddable loads 410.

[0064] In actual implementation, the corresponding load carbon emission cost can be calculated according to the carbon emission factor of the sheddable load 410, wherein the carbon emission factor (EF) is an index for measuring the amount of greenhouse gases (mainly carbon dioxide) generated by the consumption of a material or energy.

[0065] In this embodiment, the economic cost of shedding and the load carbon emission cost of the sheddable load 410 are inherent characteristics of the sheddable load 410, and generally do not change with fluctuations in the power system.

[0066] Step 120, in response to the target stability problem occurring in the power system, controls the sheddable load 410 to perform a shedding operation according to the corresponding priority participation factor, so as to make the power system run stably.

[0067] The priority participation factor is used to represent the shedding priority of the sheddable load 410.

[0068] It should be noted that the priority participation factor is based on the economic cost of shedding, the load carbon emission cost of the sheddable load 410, and the target stability contribution of the sheddable load 410 to the target stability problem.

[0069] In this embodiment, the target stability contribution is used to represent the influence degree of the sheddable load 410 on the stability of the power system in the case of the target stability problem.

[0070] It can be understood that when the power system is running, it can occur a stability problem that affects its normal operation, for example, power angle stability, voltage stability, frequency stability, etc., and the target stability problem is one of the multiple stability problems that the power system can face.

[0071] The stability contribution degree is a measure of the influence of the resectable load 410 on the stability of the power system when a certain power grid stability problem occurs, and the greater the stability contribution degree, the greater the influence of resecting the resectable load 410 on the stability of the power system.

[0072] It can be understood that the target stability contribution degree is the stability contribution degree of the resectable load 410 when the power system has a target stability problem.

[0073] In this embodiment, the target stability contribution degree of each resectable load 410 to the target stability problem can be determined by simulating the fluctuation degree of the power system when each resectable load 410 is resected under the target stability problem.

[0074] It can be understood that when the target stability contribution degree of each resectable load 410 to the target stability problem of the power system is obtained, each resectable load 410 has a corresponding target stability contribution degree for the target stability problem, and the power system has multiple resectable loads 410, and multiple target stability contribution degrees can be obtained.

[0075] For example, the power system contains n resectable loads 410, and when the power system faces a target stability problem, the n resectable loads 410 correspond to n target stability contribution degrees.

[0076] In actual execution, the resection economic cost and the load carbon emission cost of the resectable load 410 in the power system can be obtained first, or the target stability contribution degree of the resectable load 410 in the power system to the target stability problem of the power system can be obtained first.

[0077] In this embodiment, the priority participation factor of the resectable load 410 to the target stability problem is an index that reflects the priority of each resectable load 410 being executed to be resected after the target stability problem occurs.

[0078] In actual execution, for the target stability problem, the target stability contribution degree, the resection economic cost, and the load carbon emission cost can be used to obtain the priority participation factor corresponding to each resectable load 410 through mathematical operation.

[0079] The priority participation factor of the resectable load 410 to the target stability problem can be represented by a numerical value, or by characters or other means.

[0080] For example, the resection economic cost of a certain resectable load 410 in the power system is a, the load carbon emission cost is b, and the target stability contribution degree to the target stability problem is c. Based on a, b, and c, the priority participation factor of the resectable load 410 to the target stability problem is determined.

[0081] In this embodiment, according to the economic cost of cutting off each cuttable load 410, the load carbon emission cost, and the target stability contribution degree to the target stability problem, the priority participation factor of each cuttable load 410 to the target stability problem can be determined to determine which cuttable load 410 should be cut off first to maintain the stable operation of the power system.

[0082] In this embodiment, according to the priority participation factor of each cuttable load 410 to the target stability problem, the reasonable cutting-off sequence of the cuttable load 410 can be determined, and the cuttable load 410 is cut off in the sequence to realize the stable operation of the power system.

[0083] Taking the priority participation factor as a numerical value as an example.

[0084] The power system includes a cuttable load A, a cuttable load B, and a cuttable load C. Based on the target stability contribution degree, the economic cost of cutting off, and the load carbon emission cost, the priority participation factors of the cuttable load A, the cuttable load B, and the cuttable load C corresponding to the target stability problem are calculated to be 10, 15, and 2 respectively.

[0085] The cuttable load 410 is controlled to be cut off in the order from large to small, the cuttable load B is cut off first, it is judged whether the target stability problem is solved, when the target stability problem is not solved, the cuttable load A is cut off next, and so on, until the target stability problem is solved, the minimum control cost and carbon emission are used to realize the stable control of the power system.

[0086] Taking the priority participation factor as a string as an example.

[0087] The power system includes a cuttable load A, a cuttable load B, and a cuttable load C. Based on the target stability contribution degree, the economic cost of cutting off, and the load carbon emission cost, the priority participation factors of the cuttable load A, the cuttable load B, and the cuttable load C corresponding to the target stability problem are calculated to be abc, cdf, and egh respectively.

[0088] The cuttable load 410 is controlled to be cut off in the preset order, the cuttable load B is cut off first, it is judged whether the target stability problem is solved, when the target stability problem is not solved, the cuttable load A is cut off next, and so on, until the target stability problem is solved, the minimum control cost and carbon emission are used to realize the stable control of the power system.

[0089] In the embodiments of the present application, the priority participation factor of each removable load 410 for the target stability problem is calculated according to the economic cost of removal of each removable load 410, the carbon emission cost of the load, and the stability contribution degree of the load to the target stability problem, and the removal of the removable load 410 is performed based on the priority participation factor, without experience for removal, fine removal control, and reduction of control cost.

[0090] According to the load control method of the power system provided in the embodiments of the present application, the priority participation factor representing the priority of load removal is determined by comprehensively evaluating the economic cost of removal of each removable load 410, the carbon emission cost, and the target stability contribution degree of the load to the target stability problem, the removable load 410 can be reasonably removed, the efficient and stable operation of the power system is realized, and the control cost and carbon emission of the power system can be effectively reduced.

[0091] In some embodiments, the target stability contribution degree is determined by the following steps:

[0092] The stability contribution degrees of each removable load 410 to each power grid stability problem are obtained by traversing the power grid stability problems in the stability problem library, the stability problem library includes a plurality of power grid stability problems of the power system, and the target stability problem is one of the stability problems in the stability problem library.

[0093] The stability contribution degree set is constructed based on the stability contribution degrees of each removable load 410 to each power grid stability problem.

[0094] The target stability contribution degree of each removable load 410 to the target stability problem is obtained by searching the stability contribution degree set.

[0095] The stability problem library contains a plurality of power grid stability problems that may occur during the operation of the power system, and the power grid stability problems contained in the stability problem library can be updated according to the operation of the power system.

[0096] The traversal means that each power grid stability problem in the stability problem library is analyzed to obtain the stability contribution degrees of each removable load 410 to each power grid stability problem.

[0097] For example, the stability problem library includes power grid stability problem 1, power grid stability problem 2, and power grid stability problem 3 of the power system, and the power system includes removable load A, removable load B, and removable load C.

[0098] For the power grid stability problem 1, the stability contribution degrees of the sheddable load A, the sheddable load B and the sheddable load C are A1, B1 and C1 respectively; for the power grid stability problem 2, the stability contribution degrees of the sheddable load A, the sheddable load B and the sheddable load C are A2, B2 and C2 respectively; for the power grid stability problem 3, the stability contribution degrees of the sheddable load A, the sheddable load B and the sheddable load C are A3, B3 and C3 respectively.

[0099] In this embodiment, the power grid stability problems in the stability problem library are traversed, the stability contribution degrees of each sheddable load 410 to each power grid stability problem are obtained, and the obtained stability contribution degree set includes A1, B1, C1, A2, B2, C2, A3, B3 and C3.

[0100] In this embodiment, the target stability problem is one of the power grid stability problems in the stability problem library. When the target stability problem occurs in the power system, the target stability contribution degrees of each sheddable load 410 to the target stability problem can be quickly obtained by searching the stability contribution degree set, and the efficiency of obtaining the target stability contribution degree and the subsequent priority participation factor is effectively improved.

[0101] For example, the target stability problem is the power grid stability problem 1 in the stability problem library. The target stability contribution degrees of the sheddable load A, the sheddable load B and the sheddable load C are A1, B1 and C1 respectively by searching the stability contribution degree set.

[0102] In this embodiment, by traversing the power grid stability problems in the stability problem library, the stability contribution degrees of each sheddable load 410 to each power grid stability problem are calculated, and the stability contribution degree set is obtained. When a certain target stability problem occurs, searching is directly performed in the stability contribution degree set, which can effectively improve the efficiency of obtaining the target stability contribution degree and help to more quickly calculate the priority participation factor.

[0103] In some embodiments, the stability contribution degree set is in the form of a matrix.

[0104] In this embodiment, the stability contribution degrees of each sheddable load 410 to different power grid stability problems in the power system are obtained, the stability contribution degree set is obtained, and the stability contribution degree set is saved in the form of a matrix, which is convenient for subsequent searching.

[0105] It can be understood that for the matrix of the stability contribution degree set, the rows can represent the sheddable loads 410, and the columns can represent the power grid stability problems.

[0106] For example, the matrix of the stability contribution degree set can be as follows:

[0107]

[0108] Wherein, i is the number of the resectable load 410 in the power system, j is the number of the grid stability problems of the power system, is the stability contribution degree of the resectable load 410 to the grid stability problem.

[0109] In this embodiment, represents the stability contribution degree of the first resectable load 410 to the first grid stability problem, represents the stability contribution degree of the jth resectable load 410 to the ith grid stability problem.

[0110] In this embodiment, the stability contribution degree set is characterized by a matrix form, and the corresponding stability contribution degree can be quickly found by matrix rows and columns. When the target stability problem occurs, the target stability contribution degree of each resectable load 410 to the target stability problem can be quickly found, which helps to improve the calculation efficiency of the priority participation factor and the control efficiency of the power system.

[0111] In some embodiments, the target stability contribution degree of the resectable load 410 to the target stability problem is obtained by offline simulation of the power system.

[0112] The offline simulation can be performed in an offline manner to simulate the state of the power system when each resectable load 410 is cut off, and to calculate the target stability contribution degree of cutting off each resectable load 410 to the target stability problem according to the state change of the power system before and after the resectable load 410 is cut off.

[0113] It can be understood that for any grid stability problem, offline simulation can be performed to simulate and analyze the influence of cutting off the resectable load 410 on the state of the power system, and the stability contribution degree of each resectable load 410 to the grid stability problem can be obtained. The stability contribution degree of each resectable load 410 to each grid stability problem can be obtained, and the stability contribution degree set can be constructed.

[0114] In actual execution, the state change of the power system before and after cutting off each resectable load 410 is simulated by offline simulation, and the stability contribution degree set is constructed. By searching the stability contribution degree set, each target stability contribution degree of the target stability problem can be quickly determined.

[0115] For example, the stability problem library includes grid stability problem 1, grid stability problem 2 and grid stability problem 3 of the power system, and the power system includes resectable load A, resectable load B and resectable load C.

[0116] By offline simulation, the stability contribution degrees of the removable load A, the removable load B and the removable load C are respectively A1, B1 and C1 for the power grid stability problem 1; the stability contribution degrees of the removable load A, the removable load B and the removable load C are respectively A2, B2 and C2 for the power grid stability problem 2; the stability contribution degrees of the removable load A, the removable load B and the removable load C are respectively A3, B3 and C3 for the power grid stability problem 3, and the stability contribution degree set includes A1, B1, C1, A2, B2, C2, A3, B3 and C3.

[0117] The target stability problem is the power grid stability problem 1 of the power system, and the target stability contribution degrees are A1, B1 and C1 obtained by pre-offline simulation.

[0118] In some embodiments, the removal economic cost can be determined by the following steps:

[0119] The loss cost of the removable load 410 during the removal of the power system is obtained, and the restart cost of the removable load 410 connecting to the power system is obtained.

[0120] Based on the loss cost and the restart cost, the removal economic cost corresponding to the removable load 410 is determined according to the load capacity of the removable load 410.

[0121] The load capacity of the removable load 410 can refer to the power information of the removable load 410, including but not limited to active power information.

[0122] In this embodiment, the loss cost can be the cost required by the removable load 410 during the removal, i.e. the cost caused by the change from the running state to the stop running state, and the restart cost can be the cost required by the removable load 410 for reconnecting to the power system, i.e. the cost generated in the process of recovering from the stop running state to the running state.

[0123] According to the loss cost and the restart cost of the removable load 410 during the removal of the power system and the load capacity of the removable load 410, the removal economic cost corresponding to the removable load 410 can be calculated.

[0124] In actual implementation, the sum of the loss cost and the restart cost can be calculated first, and the ratio of the sum of the loss cost and the restart cost to the load capacity of the removable load 410 is obtained to obtain the removal economic cost corresponding to the unit load capacity.

[0125] For example, the removal economic cost can be calculated by the following formula:

[0126]

[0127] C = (loss cost + restart cost) / load capacity of the removable load 410is C is the loss cost of the i-th curable load 410 ir M is the restart cost of the i-th curable load 410 i C is the load capacity of the i-th curable load 410 i C is the curable economic cost of the i-th curable load 410.

[0128] It can be understood that the curable economic cost of the curable load 410 can represent the loss and additional cost caused after the load is cut off, and the greater the load cut-off economic cost, the higher the direct and indirect economic loss.

[0129] In some embodiments, the load carbon emission cost is determined by the following steps:

[0130] Obtaining the load carbon emission factor of the curable load 410 and the grid carbon emission factor of the power system;

[0131] Based on the load carbon emission factor and the grid carbon emission factor, the load carbon emission cost corresponding to the curable load 410 is determined according to the load capacity of the curable load 410 and the green electricity quantity.

[0132] Wherein, the green electricity quantity is the electricity quantity of the curable load 410 purchased from renewable clean energy, for example, the electricity quantity purchased from photovoltaic or wind power plant.

[0133] In this embodiment, the load carbon emission cost is a measure of the environmental impact of cutting off the curable load 410, indicating the corresponding emission cost of the carbon dioxide generated by the curable load 410 during operation. The load carbon emission cost is determined based on the carbon emission of the curable load 410 itself and the carbon emission of the grid where the curable load 410 is located, and the load carbon emission cost of different curable loads 410 is different.

[0134] It can be understood that the electricity quantity of the renewable clean energy used by the curable load 410 is not considered as the carbon emission of the curable load 410.

[0135] In actual execution, the load carbon emission cost of the curable load 410 is calculated according to the obtained load carbon emission factor of the curable load 410, the grid carbon emission factor where the curable load 410 is located, and the load capacity and green electricity quantity of the curable load.

[0136] For example, the load carbon emission cost can be calculated by the following formula:

[0137]

[0138] Wherein, μ i C is the load carbon emission cost of the i-th curable load 410, α iis a load carbon emission factor of the ith curable load 410, δ is a carbon emission factor of a power grid where the ith curable load 410 is located, M i is a load capacity of the ith curable load 410, gi is a green electricity quantity purchased by the ith curable load 410.

[0139] In actual implementation, the target stability contribution degree, the curtailment economic cost, and the load carbon emission cost can be obtained, and the priority participation factor of each curable load 410 for the target stability problem can be calculated through certain mathematical operation methods.

[0140] In some embodiments, the priority participation factor is determined through the following steps:

[0141] The difference between the target stability contribution degree and the curtailment economic cost and the load carbon emission cost is taken as the priority participation factor.

[0142] For example, the target stability problem is the jth power grid stability problem in the stability problem library, and the priority participation factor can be calculated through the following formula:

[0143]

[0144] wherein, is a target stability contribution degree of the ith curable load 410 for the target stability problem, C i is a curtailment economic cost of the ith curable load 410, μ i is a load carbon emission cost of the ith curable load 410, k ji is a priority participation factor of the ith curable load 410 for the target stability problem.

[0145] In this embodiment, the priority participation factor of the curable load 410 for the target stability problem is determined through the obtained curtailment economic cost, load carbon emission cost, and target stability contribution degree of the curable load 410 for the target stability problem of the power system, and the order of the curable load is obtained, which helps to reasonably curtail the curable load 410 and improve the efficiency of solving the target stability problem.

[0146] It can be understood that the priority participation factor is determined by subtracting the curtailment economic cost and the load carbon emission cost from the target stability contribution degree, and the calculation method can curtail the target curable load 410 by comprehensively considering the power system stability, economic cost, and carbon emission cost, so as to reduce the control cost and carbon emission on the basis of ensuring system stability.

[0147] A specific embodiment is introduced below.

[0148] For example, Figure 2As shown, the economic cost of cutting off the cuttable load 410, the load carbon emission cost and the target stability contribution degree to the target stability problem are obtained, the priority participation factor of the cuttable load 410 is calculated, and the cuttable load 410 is cut off according to the size order of the priority participation factor until the target stability problem is solved.

[0149] The data of the power system is collected, the economic cost of cutting off each cuttable load 410 in the power system is calculated according to the loss cost caused during power cut-off and the restart cost required for the cuttable load 410 to be put back into power supply.

[0150] The economic cost of cutting off each cuttable load 410 in the power system is calculated according to the loss cost caused during power cut-off and the restart cost required for the cuttable load 410 to be put back into power supply.

[0151]

[0152] In the formula, C i is the economic cost of cutting off the i-th cuttable load 410, C is is the loss cost of the i-th cuttable load 410, C ir is the restart cost of the i-th cuttable load 410, M i is the load capacity of the i-th cuttable load 410.

[0153] The load carbon emission cost of each cuttable load 410 in the power system is calculated according to the carbon emission factor of the cuttable load 410 itself and the carbon emission factor of the power grid where the cuttable load 410 is located.

[0154] The load carbon emission cost of each cuttable load 410 in the power system is calculated according to the carbon emission factor of the cuttable load 410 itself and the carbon emission factor of the power grid where the cuttable load 410 is located.

[0155]

[0156] In the formula, μ i is the load carbon emission cost of the i-th cuttable load 410, α i is the load carbon emission factor of the i-th cuttable load 410, δ is the carbon emission factor of the power grid where the i-th cuttable load 410 is located, M i is the load capacity of the i-th cuttable load 410, M gi is the green electricity quantity of the i-th cuttable load 410.

[0157] The stability contribution degree of each cuttable load 410 in the power system to each power grid stability problem is calculated through offline simulation, and a stability contribution degree set is constructed to facilitate obtaining the target stability contribution degree.

[0158] The stability contribution degree set can be in the following matrix form:

[0159]

[0160] In the matrix, i is the number of the excisable load 410 in the power system, j is the number of the grid stability problems of the power system, is the stability contribution degree of the excisable load 410 to the grid stability problem.

[0161] When the target stability problem is the wth grid stability problem in the stability problem library, the target stability contribution degrees of the respective excisable loads 410 are

[0162] Based on the target stability contribution degree, the excision economic cost and the load carbon emission cost, the priority participation factor of each excisable load 410 to the target stability problem is determined by using the formula.

[0163] wherein the target stability problem is the wth grid stability problem in the stability problem library, and the priority participation factor can be calculated by the following formula:

[0164]

[0165] In the formula, is the target stability contribution degree of the ith excisable load 410 to the target stability problem, C i is the excision economic cost of the ith excisable load 410, μ i is the carbon emission cost of the ith excisable load 410; and the priority participation factors of the respective excisable loads 410 to the target stability problem are respectively k w1 , k w2 , k w3 , …, k wi .

[0166] Finally, the priority participation factors k w1 to k wi can be arranged in descending order, and the corresponding excisable loads 410 are excised in sequence according to the order until the target stability problem of the power system is solved.

[0167] In this embodiment, according to the excision economic cost, the carbon emission cost and the target stability contribution degree of the excisable load 410 to the target stability problem, the priority participation factor and the size order characterizing the priority of load excision are determined, and the excisable load 410 is excised in sequence according to the order, so that the excisable load 410 can be reasonably excised to solve the target stability problem, help the power system to operate stably, reduce the control cost and carbon emission, and improve the control efficiency.

[0168] The load control method for a power system provided in this application can be executed by a load control device 300 of the power system. This application uses the load control device 300 of the power system executing the load control method as an example to illustrate the load control device 300 of the power system provided in this application.

[0169] This application also provides a load control device 300 for a power system.

[0170] like Figure 3 As shown, the load control device 300 of the power system includes:

[0171] Acquisition module 310 is used to acquire each disconnectable load 410 of the power system;

[0172] The processing module 320 is used to control the shelvable load 410 to perform shelving operations according to the corresponding priority participation factor in response to the target stability problem of the power system, so as to ensure the stable operation of the power system.

[0173] Among them, the priority participation factor is used to characterize the resection priority of the resectable load 410;

[0174] The priority participation factor is based on the economic cost of removing the severable load 410, the carbon emission cost of the load, and the contribution of the severable load 410 to the target stability problem.

[0175] The target stability contribution is used to characterize the impact of load shelving 410 on the operational stability of the power system in the event of a target stability problem.

[0176] According to the power system load control device 300 provided in the embodiments of this application, by comprehensively evaluating the economic cost of cutting off each cut-off load 410, the carbon emission cost, and the contribution to the target stability problem, the priority participation factor characterizing the load cutting priority is determined, and the cut-off load 410 can be cut off in a reasonable manner to achieve efficient and stable operation of the power system, while effectively reducing the power system control cost and carbon emissions.

[0177] In some embodiments, the acquisition module 310 is used to traverse the power grid stability problems in the stability problem library and acquire the stability contribution of each disconnectable load 410 to each power grid stability problem. The stability problem library includes multiple power grid stability problems of the power system, and the target stability problem is one of the stability problem library.

[0178] Based on the stability contribution of each detachable load 410 to each power grid stability problem, a stability contribution set is constructed;

[0179] Find the set of stable contributions and obtain the target stability contribution of each removable load 410 to the target stability problem.

[0180] In some embodiments, the stability contribution set is in the form of a matrix.

[0181] In some embodiments, the obtaining module 310 is configured to obtain, by offline simulation of the power system, the target stability contribution of the removable load 410 to the target stability problem.

[0182] In some embodiments, the obtaining module 310 is configured to obtain the loss cost of the removable load 410 during the removal of the power system, and obtain the restart cost of the removable load 410 connected to the power system.

[0183] Based on the loss cost and the restart cost, the removal economic cost corresponding to the removable load 410 is determined according to the load capacity of the removable load 410.

[0184] In some embodiments, the obtaining module 310 is configured to obtain the load carbon emission factor of the removable load 410 and the grid carbon emission factor of the power system.

[0185] Based on the load carbon emission factor and the grid carbon emission factor, the load carbon emission cost corresponding to the removable load 410 is determined according to the load capacity of the removable load 410 and the green electricity amount.

[0186] In some embodiments, the processing module 320 is configured to subtract the difference obtained by subtracting the removal economic cost and the load carbon emission cost from the target stability contribution as the priority participation factor.

[0187] In some embodiments, the processing module 320 is configured to, in the case that the power system has the target stability problem, control the removable load 410 in the power system to be removed based on the priority participation factor.

[0188] The load control device 300 of the power system in the embodiments of the present application can be an electronic device, or a component in an electronic device, such as an integrated circuit or a chip.

[0189] The load control device 300 of the power system provided by the embodiments of the present application can realize Figure 1 The method embodiments realize various processes, and to avoid repetition, details are not repeated here.

[0190] As shown in Figure 4 , the power system includes:

[0191] a plurality of removable loads 410;

[0192] a load control device 300, the load control device 300 being connected to the plurality of removable loads 410.

[0193] For example, the power system has n removable loads 410, the n removable loads 410 are connected with the load control device 300, and the load control device 300 controls the removable loads 410 to be removed to stabilize the operation of the power system.

[0194] According to the power system provided in the embodiments of the present application, by comprehensively evaluating the removal economic cost, carbon emission cost and target stability contribution degree to the target stability problem of each removable load 410, the priority participation factor representing the load removal priority is determined, the removable loads 410 can be reasonably removed, the efficient and stable operation of the power system is realized, and the power system control cost and carbon emission can be effectively reduced.

[0195] In some embodiments, as shown in Figure 5 The embodiments of the power system load control method provided in the present application are implemented by the processor 501 of the electronic device 500, and the same technical effects can be achieved. To avoid repetition, details are not described herein.

[0196] It should be noted that the electronic device in the embodiments of the present application includes the mobile electronic device and the non-mobile electronic device described above.

[0197] The embodiments of the power system load control method provided in the present application are implemented by the processor 501 of the electronic device 500, and the same technical effects can be achieved. To avoid repetition, details are not described herein.

[0198] The processor is the processor in the electronic device described in the above embodiments. The readable storage medium includes a computer readable storage medium, such as a computer readable only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, etc.

[0199] The embodiments of the power system load control method provided in the present application are implemented by the processor 501 of the electronic device 500, and the same technical effects can be achieved. To avoid repetition, details are not described herein.

[0200] The processor is the processor in the electronic device described in the above embodiments. The readable storage medium includes a computer readable storage medium, such as a computer readable only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, etc.

[0201] The chip provided by the embodiment of the present application also includes a processor and a communication interface, the communication interface is coupled with the processor, the processor is used to run programs or instructions, realizes each process of the load control method of the power system, and achieves the same technical effects. To avoid repetition, details are not described here.

[0202] It should be understood that the chip mentioned in the embodiment of the present application can also be referred to as a system chip, a system chip, a chip system or a system on chip, etc.

[0203] It should be noted that in this paper, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitations, the element defined by the statement "including a" does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the method and device in the embodiment of the present application is not limited to the order of functions shown or discussed, but also includes functions performed in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method can be performed in an order different from the described order, and various steps can also be added, omitted or combined. In addition, the features described with reference to some examples can be combined in other examples.

[0204] From the above description of the embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment method can be realized by software and necessary general hardware platform, of course, it can also be realized by hardware, but in many cases, the former is a better embodiment. Based on such understanding, the technical solutions of the present application can be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), including a plurality of instructions for making a terminal (which can be a mobile phone, computer, server or network equipment, etc.) execute the method described in each embodiment of the present application.

[0205] The embodiments of the present application are described above in combination with the drawings, but the present application is not limited to the above-mentioned specific embodiments, the above-mentioned specific embodiments are only illustrative, not restrictive, and those skilled in the art can make many forms under the inspiration of the present application without departing from the scope of the present application and the protection scope of the claims.

[0206] In the description of the application, reference has been made to descriptive terms such as "one embodiment", "some embodiments", "an embodiment", "example", "specific example" or "some examples" etc. It is emphasized that each of these terms refers to a specific feature, structure, material or characteristic described in connection with a particular embodiment or example. The descriptive terms are not necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples.

[0207] While embodiments of the application have been shown and described, it is to be understood that the application is not limited to the details of the embodiments described, since the scope of the application is defined with respect to the appended claims.

Claims

1. A load control method for a power system, characterized in that, include: Obtain all disconnectable loads in the power system; In response to a target stability problem in the power system, the switchable loads are controlled to perform disconnection operations according to the corresponding priority participation factors, so as to ensure stable operation of the power system; The priority participation factor is used to characterize the resection priority of the resectable load; The priority participation factor is based on the economic cost of removing the shuntable load, the carbon emission cost of the load, and the contribution of the shuntable load to the target stability problem. The target stability contribution is used to characterize the degree of impact of the shelvable load on the operational stability of the power system in the event of the target stability problem.

2. The load control method for a power system according to claim 1, characterized in that, The target stability contribution is determined through the following steps: Traverse the power grid stability problems in the stability problem library, and obtain the stability contribution of each of the said disconnectable loads to each power grid stability problem. The stability problem library includes multiple power grid stability problems of the power system, and the target stability problem is one of the stability problem library. Based on the stability contribution of each of the aforementioned switchable loads to each power grid stability problem, a stability contribution set is constructed. Locate the set of stability contributions and obtain the target stability contribution of each of the removable loads to the target stability problem.

3. The load control method for a power system according to claim 2, characterized in that, The stable contribution set is represented in matrix form.

4. The load control method for a power system according to claim 1, characterized in that, The contribution of the shuntable load to the target stability problem is obtained by performing offline simulation of the power system.

5. The load control method for a power system according to any one of claims 1-4, characterized in that, The economic cost of the resection is determined through the following steps: Obtain the loss cost of the switchable load during the disconnection from the power system, and obtain the restart cost of the switchable load when it is connected to the power system; Based on the loss cost and the restart cost, the economic cost of removing the load corresponding to the load that can be removed is determined according to the load capacity of the load that can be removed.

6. The load control method for a power system according to any one of claims 1-4, characterized in that, The carbon emission cost of the load is determined through the following steps: Obtain the load carbon emission factor of the detachable load and the grid carbon emission factor of the power system; Based on the load carbon emission factor and the power grid carbon emission factor, the load carbon emission cost corresponding to the shuntable load is determined according to the load capacity and green electricity consumption of the shuntable load.

7. The load control method for a power system according to any one of claims 1-4, characterized in that, The priority participation factor is determined through the following steps: The difference between the target stability contribution and the economic cost of the cut-off and the carbon emission cost of the load is used as the priority participation factor.

8. A load control device for a power system, characterized in that, include: The acquisition module is used to acquire each disconnectable load of the power system; The processing module is used to respond to the target stability problem of the power system by controlling the disconnectable load to perform disconnection operation according to the corresponding priority participation factor, so as to ensure the stable operation of the power system; The priority participation factor is used to characterize the resection priority of the resectable load; The priority participation factor is based on the economic cost of removing the shuntable load, the carbon emission cost of the load, and the contribution of the shuntable load to the target stability problem. The target stability contribution is used to characterize the degree of impact of the shelvable load on the operational stability of the power system in the event of the target stability problem.

9. An electric power system, characterized in that, include: Multiple resectable loads; The load control device for a power system as described in claim 8, wherein the load control device is connected to the plurality of disconnectable loads.

10. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the program, it implements the load control method for the power system as described in any one of claims 1-7.

11. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the load control method for the power system as described in any one of claims 1-7.

12. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by the processor, it implements the load control method for the power system as described in any one of claims 1-7.

Images