Data screening and sorting method and device for power system

Abstract

The embodiment of the invention provides a data screening and sorting method and device for a power system, and the method comprises the steps: determining an initial power system, and determining an observation bus based on the initial power system; wherein the initial power system comprises at least two buses; determining initial power parameters based on the observation bus, and determining a target power system based on the initial power parameters; simulating the target power system based on the reactive power parameter, and determining a power simulation result; and performing sorting and data screening on the at least two buses based on the electric power simulation result, and determining a sorting result and a screening result. The fault screening problem is solved according to how close loads at the nodes of the buses to the limit at which the system can supply power before voltage collapse occurs, and the sorting accuracy is improved.

Description

Technical Field

[0001] The embodiments of this specification relate to the field of power technology, and particularly to a method for data screening and sorting in a power system. Background Art

[0002] In the design process of power systems and transmission systems, the system carrying capacity may be too "idealized". However, these systems now need to overcome more problems and pressures than before. There are many reasons for these problems, such as the expansion of the power consumption range, the adverse environmental impacts caused by the expansion of transmission lines, etc. Due to the long-term operation of the system under high voltage, the voltage may slowly decrease as the load increases or may rapidly decrease due to a sudden trip of a line or a generator. In either of the above cases, if the system low voltage reaches the limit, the protection device will start the system protection operation, which may lead to load shedding (partial load shedding) at some positions of the system or a power outage of the entire power system.

[0003] Therefore, there is an urgent need for a better solution. Summary of the Invention

[0004] In view of this, the embodiments of this specification provide a method for data screening and sorting in a power system. One or more embodiments of this specification also relate to a device for data screening and sorting in a power system, a computing device, a computer-readable storage medium, and a computer program to solve the technical defects existing in the prior art.

[0005] According to the first aspect of the embodiments of this specification, a method for data screening and sorting in a power system is provided, including: Determine an initial power system, and determine an observation bus based on the initial power system; wherein, the initial power system includes at least two buses; Determine initial power parameters based on the observation bus, and determine a target power system based on the initial power parameters; Simulate the target power system based on the reactive power parameter to determine a power simulation result; Sort and screen data for at least two buses based on the power simulation result to determine a sorting result and a screening result.

[0006] In a possible implementation, determining an observation bus based on the initial power system includes: Add a bus component to the initial power system, and determine the observation bus based on the bus component.

[0007] In a possible implementation, determining initial power parameters based on the observation bus includes: Determine the Jacobian matrix; Determine the target reactive power parameter and the target actual power parameter; Making the Jacobian matrix singular based on the target reactive power parameter and the target actual power parameter to determine the initial power parameter.

[0008] In a possible implementation, simulate the target power system based on the reactive power parameter to determine the power simulation result, including: Adjust the target reactive power parameter to determine the adjusted reactive power parameter; Simulate the target power system based on the adjusted reactive power parameter to determine the power simulation result.

[0009] In a possible implementation, adjusting the target reactive power parameter to determine the adjusted reactive power parameter includes: Determine the iterative step, and adjust the target reactive power parameter based on the iterative step to determine the adjusted reactive power parameter; Substitute the adjusted reactive power parameter into the Jacobian matrix to determine the adjusted Jacobian matrix; Determine the matrix determinant based on the adjusted Jacobian matrix; Determine the determinant change result based on the matrix determinant, and determine the adjusted reactive power parameter based on the determinant change result and the set accuracy.

[0010] In a possible implementation, sort at least two buses based on the power simulation result to determine the sorting result, including: In the case where the power simulation result is that any bus collapses, determine the simulation data of the previous time before the collapse; Sort at least two buses based on the simulation data to determine the sorting result.

[0011] In a possible implementation, perform data screening and sorting on at least two buses based on the power simulation result to determine the screening result, including: In the case where the power simulation result is that any bus collapses, determine the simulation data of the previous time before the collapse; Perform data screening and sorting based on the simulation data to determine the screening result.

[0012] According to the second aspect of the embodiments of the present specification, there is provided a data screening and sorting device for a power system, including: A bus determination module, configured to determine an initial power system and determine an observed bus based on the initial power system; wherein the initial power system includes at least two buses; A parameter determination module, configured to determine an initial power parameter based on the observed bus and determine a target power system based on the initial power parameter; A power simulation module, configured to simulate the target power system based on the reactive power parameter to determine the power simulation result; A data determination module, configured to sort and screen data for at least two buses based on power simulation results, and determine a sorting result and a screening result.

[0013] According to a third aspect of the embodiments of the present specification, a computing device is provided, including: A memory and a processor; The memory is used to store computer-executable instructions, and the processor is used to execute the computer-executable instructions. When the computer-executable instructions are executed by the processor, the steps of the data screening and sorting method for the above power system are implemented.

[0014] According to a fourth aspect of the embodiments of the present specification, a computer-readable storage medium is provided, which stores computer-executable instructions. When the instructions are executed by a processor, the steps of the data screening and sorting method for the above power system are implemented.

[0015] According to a fifth aspect of the embodiments of the present specification, a computer program is provided. When the computer program is executed on a computer, the computer is made to execute the steps of the data screening and sorting method for the above power system.

[0016] The embodiments of the present specification provide a data screening and sorting method and device for a power system. The data screening and sorting method for the power system includes: determining an initial power system, and determining an observation bus based on the initial power system; wherein the initial power system includes at least two buses; determining initial power parameters based on the observation bus, and determining a target power system based on the initial power parameters; performing simulation on the target power system based on reactive power parameters to determine a power simulation result; sorting and screening data for at least two buses based on the power simulation result to determine a sorting result and a screening result. By determining how close the load at the nodes of these buses is to the limit that the system can supply power before voltage collapse, the fault screening problem is solved, and the sorting accuracy is improved. Description of the Drawings

[0017] Figure 1 is a flowchart of a data screening and sorting method for a power system provided by an embodiment of the present specification; Figure 2 is a schematic structural diagram of a data screening and sorting device for a power system provided by an embodiment of the present specification; Figure 3 is a structural block diagram of a computing device provided by an embodiment of the present specification. Detailed Embodiments

[0018] In the following description, numerous specific details are set forth in order to provide a thorough understanding of this specification. However, this specification can be implemented in many other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the connotation of this specification. Therefore, this specification is not limited by the specific implementations disclosed below.

[0019] The terms used in one or more embodiments of this specification are for the purpose of describing specific embodiments only and are not intended to limit one or more embodiments of this specification. The singular forms "a" and "the" used in one or more embodiments of this specification and the appended claims are also intended to include the plural forms unless the context clearly dictates otherwise. It should also be understood that the term "and / or" used in one or more embodiments of this specification refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0020] It should be understood that although the terms first, second, etc. may be used in one or more embodiments of this specification to describe various information, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of one or more embodiments of this specification, the first may also be referred to as the second, and similarly, the second may also be referred to as the first. Depending on the context, the word "if" as used herein can be interpreted as "when" or "while" or "in response to determining".

[0021] In this specification, a method for data screening and sorting in a power system is provided. This specification also relates to a device for data screening and sorting in a power system, a computing device, and a computer-readable storage medium, which will be described in detail one by one in the following embodiments.

[0022] See Figure 1 , Figure 1 which shows a flowchart of a method for data screening and sorting in a power system according to an embodiment of this specification, specifically including the following steps.

[0023] Step 101: Determine an initial power system and determine an observation bus based on the initial power system; wherein, the initial power system includes at least two buses.

[0024] In a possible implementation manner, determining an observation bus based on the initial power system includes: adding a bus component to the initial power system and determining the observation bus based on the bus component.

[0025] In practical applications, the initial power system can be an IEEE 14-node system or an IEEE 30-node system. Add a bus in the above system for observing data, that is, the observation bus.

[0026] Since voltage collapse is greatly affected by reactive power consumption, the value of Qs, which is the reactive power critical value of the system, must be determined first. These limit values will be obtained by successively increasing the reactive power load (Qd) of one bus and observing the power flow load problem until the power flow calculation of the system using the Newton-Raphson (NR) iteration method does not converge. The value of Qd is the actual value that determines the limit, and this method can be used to compare them with the obtained Qs value. Similar simulation experiments can be completed on actual power loads. Finally, the apparent power of one bus is gradually increased until the power flow does not converge. This determines the limit before the power flow does not converge under a constant power factor load.

[0027] It can be seen from the determinant of the Jacobian matrix that the value at the voltage collapse point is zero. The elements of the Jacobian matrix are the magnitude of the nodal voltage, the angle of the nodal voltage, and the system parameters. However, it can be seen that the diagonal elements of these four sub-Jacobian matrices can be obtained from the calculated active power and reactive power of the nodes:

[0028] where P, Q, and V are the active power, reactive power, and voltage respectively, i represents the initial state, and ii represents after one calculation. Y ii The admittance after one iteration; is the voltage phase angle after one iteration.

[0029] Step 102: Determine the initial power parameters based on the observed bus, and determine the target power system based on the initial power parameters.

[0030] In a possible implementation, determining the initial power parameters based on the observed bus includes: determining the Jacobian matrix; determining the target reactive power parameter and the target actual power parameter; making the Jacobian matrix singular based on the target reactive power parameter and the target actual power parameter, and determining the initial power parameters.

[0031] In practical applications, if it is assumed that the actual power and reactive power of the load vary with a constant power factor, then before voltage collapse occurs, how much the load (P and Q) on the load bus can be increased. First, it is necessary to find the values of P and Q on the bus that make the Jacobian matrix singular, and then the maximum load can be found.

[0032] First, substitute Equation (2) into Equation (3), and Equation (3) can be obtained as: det(A)=A ii ‧det(B ii )-A i,i+k ‧det(B i,i+k )+X (5) where X is the remainder after each iteration, , 。

[0033] Set det(A) to zero. Referring to Equation (8), Equation (2) is expressed as A ii+k_s , Equation (1) is expressed as A i,i_s , Equation (3) is expressed as B i,i+k . Equations (6) and (7) are obtained using the assumption of a constant power factor. Aii_s, Ai,i+k_s, Pi (active power), and Qi (reactive power) can all be obtained from the following equations:

[0034] Equations (5), (6), (7), and (8) have four unknowns: Aii_s, Ai,i+k_s, Pi, and Qi. Substitute the obtained Pi and Qi into these equations and then substitute them into Equations (3) and (4) to calculate new equations, and repeat the process. Eventually, the limit values of Pi and Qi, that is, the initial power parameters, can be determined.

[0035] Step 103: Simulate the target power system based on the reactive power parameters to determine the power simulation results.

[0036] In a possible implementation, simulating the target power system based on the reactive power parameters to determine the power simulation results includes: adjusting the target reactive power parameters to determine the adjusted reactive power parameters; simulating the target power system based on the adjusted reactive power parameters to determine the power simulation results.

[0037] Specifically, adjusting the target reactive power parameters to determine the adjusted reactive power parameters includes: determining the iterative step, adjusting the target reactive power parameters based on the iterative step to determine the adjusted reactive power parameters; substituting the adjusted reactive power parameters into the Jacobian matrix to determine the adjusted Jacobian matrix; determining the determinant of the matrix based on the adjusted Jacobian matrix; determining the determinant change result based on the determinant of the matrix, and determining the adjusted reactive power parameters based on the determinant change result and the set accuracy.

[0038] In practical applications, through power flow calculation and the obtained Pi and Qi above, a more accurate and (two diagonal terms in the Jacobian matrix that include Qi) can be obtained through an iterative process to make the determinant of the Jacobian matrix closer to zero. The closer the determinant is to zero, the more accurate the limit values of Pi and Qi will be.

[0039] Furthermore, substitute the obtained new Qs (the finally obtained Qi) into Equation (1) to calculate the new 。Then calculate the determinant of the Newton-Raphson matrix according to Qs. Compare the change in the determinant value. If the change is less than the specified precision, the program stops. If the change in the new determinant value is greater than the precision, repeat the calculation, and this loop continues. Here, the precision is the threshold of the dead zone.

[0040] Table 1

[0041] Referring to Table 1, the value of det(A) changes from positive to negative according to the rule of 10 7 rule. This means that the determinant of the Jacobian matrix is very sensitive in this region, and even if the elements determining the determinant of the Jacobian matrix change, it will be very small. Therefore, the precision of this iterative process is set to 10 7 . Another criterion for stopping the iterative process is when the Newton-Raphson matrix changes sign.

[0042] Table 2

[0043] Referring to Table 2, use multiples of 3 to simulate the system under high summer load. Multiply the original load by 3 to simulate the heavy load condition. Use the Newton-Raphson (NR) iterative method to solve the IEEE 14-node system, and use the highest power mismatch = 2.66772 e in the Matlab function -5 , and the number of iterations = 4.

[0044] Among them, when the number of iterations is 4, the entire system cannot recover, so take the data when the number of iterations is 3 for subsequent sorting and screening.

[0045] Step 104: Sort and screen data for at least two buses based on the power simulation results to determine the sorting result and the screening result.

[0046] In a possible implementation, sorting at least two buses based on the power simulation results to determine the sorting result includes: in the case where the power simulation result is the collapse of any bus, determining the simulation data of the previous time before the collapse; sorting at least two buses based on the simulation data to determine the sorting result.

[0047] In practical applications, if P and Q reach their limits, voltage collapse will occur. However, it is necessary to determine whether these limit values are too conservative and compare them with the actual limit values. The actual limit values refer to the boundary between the convergent state and the non-convergent state of the system. To obtain these actual limit values, multiple power flow load calculations must be performed. For example, under certain load conditions, what is the maximum Q load that the system can withstand on bus 2? The Q load on bus 2 can be gradually increased until the power flow fails to converge. This Q load value is the limit value obtained using theoretical methods. The comparison between the actual limit value and the obtained limit value is shown in Table III.

[0048] Table III

[0049] It should be noted that since bus 1 is the reference bus (also known as the balancing bus or the benchmark bus), it is usually used as the reference point for voltage, and its voltage amplitude and phase are fixed. Buses 9-14 are load buses, which are connected to loads and mainly used to consume power. Bus 9 represents 12-14, and bus 10 represents 11. As a result, only bus 9 and bus 10 are referred to.

[0050] Furthermore, referring to Table IV, index A is obtained through the data obtained from actual and simulation calculations.

[0051] Table IV

[0052] Among them, the original Qd value is the specified value Qd. The actual result Qs is the value obtained from the third simulation of the above-mentioned simulated summer high load.

[0053] Furthermore, referring to Table V, the sorting result is obtained based on index A. Based on the sorting result, the buses that are not likely to affect the system can be adjusted in practical applications. Among them, index A is the sorting result of this scheme, and index is the sorting result of the traditional scheme. The larger the values of index A and index, the less likely the corresponding bus is to affect the system.

[0054] Table V

[0055] In a possible implementation, data screening is performed on at least two buses based on the power simulation results to determine the screening result, including: in the case where the power simulation result is the collapse of any bus, determining the simulation data of the previous time before the collapse; performing data screening based on the simulation data to determine the screening result.

[0056] In practical applications, screening can be performed based on the above-mentioned metric A. For example, a screening threshold is set, and screening is carried out based on the screening threshold and metric A to obtain busbars that are not likely to affect the system. Thus, in practice, the power parameters of these busbars that are not likely to affect the system can be adjusted to achieve the purpose of not affecting the entire power system.

[0057] The embodiments of this specification provide a method and device for data screening and sorting in a power system. The method for data screening and sorting in a power system includes: determining an initial power system, and determining observed busbars based on the initial power system; wherein, the initial power system includes at least two busbars; determining initial power parameters based on the observed busbars, and determining a target power system based on the initial power parameters; simulating the target power system based on reactive power parameters to determine a power simulation result; sorting and data screening at least two busbars based on the power simulation result to determine a sorting result and a screening result. By determining how close the load at the nodes of these busbars is to the limit that the system can supply power before voltage collapse occurs, the fault screening problem is solved, and the sorting accuracy is improved.

[0058] Corresponding to the above method embodiments, this specification also provides embodiments of a device for data screening and sorting in a power system. Figure 2 The structural schematic diagram of a device for data screening and sorting in a power system provided by an embodiment of this specification is shown. As Figure 2 shown, the device includes: A busbar determination module 201, configured to determine an initial power system and determine observed busbars based on the initial power system; wherein, the initial power system includes at least two busbars; A parameter determination module 202, configured to determine initial power parameters based on the observed busbars and determine a target power system based on the initial power parameters; A power simulation module 203, configured to simulate the target power system based on reactive power parameters to determine a power simulation result; A data determination module 204, configured to sort and data screen at least two busbars based on the power simulation result to determine a sorting result and a screening result.

[0059] In a possible implementation manner, determining observed busbars based on the initial power system includes: Adding busbar components to the initial power system and determining observed busbars based on the busbar components.

[0060] In a possible implementation manner, determining initial power parameters based on the observed busbars includes: Determining a Jacobian matrix; Determining target reactive power parameters and target actual power parameters; Making the Jacobian matrix singular based on the target reactive power parameter and the target actual power parameter to determine the initial power parameter.

[0061] In a possible implementation, simulating the target power system based on the reactive power parameter to determine the power simulation result, including: Adjusting the target reactive power parameter to determine the adjusted reactive power parameter; Simulating the target power system based on the adjusted reactive power parameter to determine the power simulation result.

[0062] In a possible implementation, adjusting the target reactive power parameter to determine the adjusted reactive power parameter, including: Determining the iterative step, and adjusting the target reactive power parameter based on the iterative step to determine the adjusted reactive power parameter; Substituting the adjusted reactive power parameter into the Jacobian matrix to determine the adjusted Jacobian matrix; Determining the matrix determinant based on the adjusted Jacobian matrix; Determining the determinant change result based on the matrix determinant, and determining the adjusted reactive power parameter based on the determinant change result and the set accuracy.

[0063] In a possible implementation, sorting at least two buses based on the power simulation result to determine the sorting result, including: In the case where the power simulation result is that any bus collapses, determining the simulation data of the previous time before the collapse; Sorting at least two buses based on the simulation data to determine the sorting result.

[0064] In a possible implementation, screening and sorting data of at least two buses based on the power simulation result to determine the screening result, including: In the case where the power simulation result is that any bus collapses, determining the simulation data of the previous time before the collapse; Performing data screening and sorting based on the simulation data to determine the screening result.

[0065] The embodiments of this specification provide a method and device for data screening and sorting of a power system. The data screening and sorting device of the power system includes: determining an initial power system, and determining an observation bus based on the initial power system; wherein, the initial power system includes at least two buses; determining an initial power parameter based on the observation bus, and determining a target power system based on the initial power parameter; simulating the target power system based on the reactive power parameter to determine the power simulation result; sorting and screening data of at least two buses based on the power simulation result to determine the sorting result and the screening result. By determining how close the load at the node of these buses is to the limit that the system can supply power before the voltage collapse, the fault screening problem is solved, and the sorting accuracy is improved.

[0066] The above is a schematic solution of a data screening and sorting device for a power system in this embodiment. It should be noted that the technical solution of the data screening and sorting device for the power system belongs to the same concept as the technical solution of the above-mentioned data screening and sorting method for the power system. For the details not described in the technical solution of the data screening and sorting device for the power system, reference can be made to the description of the technical solution of the above-mentioned data screening and sorting method for the power system.

[0067] Figure 3 A structural block diagram of a computing device 300 according to an embodiment of this specification is shown. The components of the computing device 300 include, but are not limited to, a memory 310 and a processor 320. The processor 320 is connected to the memory 310 through a bus 330, and a database 340 is used to store data.

[0068] The computing device 300 further includes an access device 340, which enables the computing device 300 to communicate via one or more networks 360. Examples of these networks include the Public Switched Telephone Network (PSTN), Local Area Network (LAN), Wide Area Network (WAN), Personal Area Network (PAN), or a combination of communication networks such as the Internet. The access device 340 may include one or more of any type of wired or wireless network interface (e.g., a network interface card (NIC)), such as an IEEE 802.11 Wireless Local Area Network (WLAN) wireless interface, a Worldwide Interoperability for Microwave Access (Wi-MAX) interface, an Ethernet interface, a Universal Serial Bus (USB) interface, a cellular network interface, a Bluetooth interface, a Near Field Communication (NFC).

[0069] In an embodiment of this specification, the above components of the computing device 300 and Figure 3 other components not shown therein may also be connected to each other, for example, through a bus. It should be understood that Figure 3 the shown structural block diagram of the computing device is for illustrative purposes only and is not a limitation on the scope of this specification. Those skilled in the art can add or replace other components as needed.

[0070] The computing device 300 can be any type of stationary or mobile computing device, including a mobile computer or mobile computing device (e.g., a tablet computer, a personal digital assistant, a laptop computer, a notebook computer, a netbook, etc.), a mobile phone (e.g., a smart phone), a wearable computing device (e.g., a smart watch, smart glasses, etc.) or other types of mobile devices, or a stationary computing device such as a desktop computer or a personal computer (PC). The computing device 300 can also be a mobile or stationary server.

[0071] Among them, the processor 320 is used to execute the following computer-executable instructions, and when the computer-executable instructions are executed by the processor, the steps of the data screening and sorting method of the above power system are implemented. The above is a schematic solution of a computing device in this embodiment. It should be noted that the technical solution of this computing device and the technical solution of the data screening and sorting method of the above power system belong to the same concept. For the details not described in detail in the technical solution of the computing device, reference can be made to the description of the technical solution of the data screening and sorting method of the above power system.

[0072] An embodiment of this specification also provides a computer-readable storage medium, which stores computer-executable instructions, and when the computer-executable instructions are executed by a processor, the steps of the data screening and sorting method of the above power system are implemented.

[0073] The above is a schematic solution of a computer-readable storage medium in this embodiment. It should be noted that the technical solution of this storage medium and the technical solution of the data screening and sorting method of the above power system belong to the same concept. For the details not described in detail in the technical solution of the storage medium, reference can be made to the description of the technical solution of the data screening and sorting method of the above power system.

[0074] An embodiment of this specification also provides a computer program, wherein when the computer program is executed on a computer, the computer is made to execute the steps of the data screening and sorting method of the above power system.

[0075] The above is a schematic solution of a computer program in this embodiment. It should be noted that the technical solution of this computer program and the technical solution of the data screening and sorting method of the above power system belong to the same concept. For the details not described in detail in the technical solution of the computer program, reference can be made to the description of the technical solution of the data screening and sorting method of the above power system.

[0076] The above description is of specific embodiments of this specification. Other embodiments are within the scope of the appended claims. In some cases, the acts or steps recited in the claims may be performed in a different order than in the embodiments and still achieve the desired result. Additionally, the processes depicted in the drawings do not necessarily require the particular order or sequential order shown to achieve the desired result. In certain embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0077] The computer instructions include computer program code, which may be in source code form, object code form, 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, removable 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. It should be noted that the content included in the computer-readable medium may be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, the computer-readable medium does not include electrical carrier signals and telecommunication signals.

[0078] It should be noted that for the foregoing method embodiments, for the sake of simplicity of description, they are all expressed as a series of combinations of actions. However, those skilled in the art should know that the embodiments of this specification are not limited by the described order of actions, because according to the embodiments of this specification, certain steps may be performed in other orders or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily essential to the embodiments of this specification.

[0079] In the above embodiments, the descriptions of the various embodiments have their own focuses. For the parts not detailed in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

[0080] The preferred embodiments of this specification disclosed above are only used to help explain this specification. The alternative embodiments do not elaborate on all the details and do not limit the invention to only the specific embodiments described. Obviously, many modifications and variations can be made according to the content of the embodiments of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the embodiments of this specification, so that those skilled in the art can well understand and utilize this specification. This specification is only limited by the claims and their full scope and equivalents.

Claims

1. A method for screening and sorting data in a power system, characterized in that: include: Determine an initial power system, and determine an observed bus based on the initial power system; wherein the initial power system includes at least two buses; determining initial power parameters based on the observed bus, and determining a target power system based on the initial power parameters; Simulating the target power system based on reactive power parameters to determine power simulation results; The at least two buses are sorted and data screened based on the power simulation result to determine a sorting result and a screening result.

2. The method according to claim 1, characterized in that The determining of the observed bus based on the initial power system comprises: A bus component is added to the initial power system, and an observed bus is determined based on the bus component.

3. The method according to claim 1, characterized in that The determining of the initial power parameters based on the observed bus comprises: Determine the Jacobian matrix; Determine a target reactive power parameter and a target actual power parameter; The Jacobian matrix is ​​made singular based on the target reactive power parameter and the target actual power parameter, and an initial power parameter is determined.

4. The method according to claim 3, characterized in that The simulating the target power system based on the reactive power parameter to determine the power simulation result includes: Adjusting the target reactive power parameter to determine an adjusted reactive power parameter; The target power system is simulated based on the adjusted reactive power parameter to determine a power simulation result.

5. The method according to claim 4, characterized in that Adjusting the target reactive power parameter to determine the adjusted reactive power parameter includes: Determine an iterative step, and adjust the target reactive power parameter based on the iterative step to determine an adjusted reactive power parameter; Substituting the adjusted reactive power parameter into the Jacobian matrix to determine an adjusted Jacobian matrix; determining a matrix determinant based on the adjusted Jacobian matrix; A determinant change result is determined based on the matrix determinant, and an adjusted reactive power parameter is determined based on the determinant change result and a set accuracy.

6. The method according to claim 1, characterized in that The step of sorting the at least two buses based on the power simulation result to determine the sorting result includes: When the power simulation result is a collapse of any of the buses, determining simulation data before the collapse; The at least two buses are sorted based on the simulation data to determine a sorting result.

7. The method according to claim 1, characterized in that The step of screening data of the at least two buses based on the power simulation result to determine the screening result includes: When the power simulation result is a collapse of any of the buses, determining simulation data before the collapse; Data screening is performed based on the simulation data to determine screening results.

8. A data screening and sorting device for a power system, characterized in that: include: A bus determination module is configured to determine an initial power system and determine an observed bus based on the initial power system; wherein the initial power system includes at least two buses; a parameter determination module, configured to determine initial power parameters based on the observed bus, and determine a target power system based on the initial power parameters; A power simulation module, configured to simulate the target power system based on reactive power parameters and determine a power simulation result; The data determination module is configured to sort and screen the data of the at least two buses based on the power simulation result, and determine the sorting result and the screening result.

9. A computing device, characterized in that include: Memory and processor; The memory is used to store computer executable instructions, and the processor is used to execute the computer executable instructions. When the computer executable instructions are executed by the processor, the steps of the data screening and sorting method for the power system described in any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, implement the steps of the data screening and sorting method for a power system as claimed in any one of claims 1 to 7.

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