Defect determination method, device and equipment applied to transformer substation and medium

Abstract

This invention discloses a method, apparatus, equipment, and medium for defect determination in substations. The method includes: acquiring disconnector parameter information corresponding to each disconnector switch opening of a target disconnector switch; the parameter information includes disconnector switch crank arm parameters, disconnector switch connecting rod parameters, and disconnector switch mechanical parameters; determining insulator rotation parameter information corresponding to each disconnector switch opening based on the disconnector switch parameter information and preset constraint equations; determining defect threshold information corresponding to the insulator rotation parameter information; determining the defect type based on the insulator rotation parameter information and the defect threshold information; and generating defect warning information corresponding to the defect type. This method enables the determination of whether a disconnector switch has a defect based on the parameter information of each disconnector switch opening, and generates corresponding defect warning information, thus minimizing losses caused by switch damage.

Description

Technical Field

[0001] This invention relates to the field of power technology, and in particular to a method, apparatus, equipment, and medium for determining defects in substations. Background Technology

[0002] With the rapid development of power supply technology, in order to ensure the normal operation of power lines, disconnecting switches are used to isolate the circuit breaker from the power source. Therefore, reliable and effective opening and closing actions are crucial to the safe and stable operation of disconnecting switches.

[0003] However, disconnect switches may have certain defects during use, and the common defect handling methods rely on the staff's analysis and judgment of the actual opening and closing process and results of the disconnect switch. It is impossible to detect the defects of the disconnect switch in advance before the disconnect switch is opened or closed, which will lead to damage to the switch and cause time and property losses. Summary of the Invention

[0004] This invention provides a method, apparatus, equipment, and medium for determining defects in substations. It enables the determination of whether a disconnecting switch has defects based on the parameter information of each disconnecting switch port, and generates corresponding defect warning information, thereby minimizing losses caused by switch damage.

[0005] In a first aspect, embodiments of the present invention provide a defect determination method applied to substations, comprising:

[0006] Obtain disconnector parameter information corresponding to each disconnector gate of the target disconnector; wherein, the parameter information includes disconnector crank arm parameters, disconnector linkage parameters, and disconnector mechanical parameters;

[0007] Based on the disconnector switch parameter information and the preset constraint equation, determine the insulator rotation parameter information corresponding to each disconnector switch gate;

[0008] Determine the defect threshold information corresponding to the insulator rotation parameter information, determine the defect type based on the insulator rotation parameter information and the defect threshold information, and generate defect prompt information corresponding to the defect type.

[0009] Secondly, embodiments of the present invention also provide a defect determination device applied to a substation, the device comprising:

[0010] The parameter information acquisition module is used to acquire disconnector parameter information corresponding to each disconnector gate of the target disconnector; wherein, the parameter information includes disconnector crank arm parameters, disconnector connecting rod parameters, and disconnector mechanical parameters;

[0011] The rotation parameter information determination module is used to determine the insulator rotation parameter information corresponding to each disconnector gate based on the disconnector switch parameter information and the preset constraint equation;

[0012] The prompt information generation module is used to determine the defect threshold information corresponding to the insulator rotation parameter information, determine the defect type based on the insulator rotation parameter information and the defect threshold information, and generate defect prompt information corresponding to the defect type.

[0013] Thirdly, embodiments of the present invention also provide an electronic device, the device comprising:

[0014] One or more processors; and

[0015] A memory communicatively connected to the at least one processor; wherein,

[0016] The memory stores a computer program that can be executed by the at least one processor, which enables the at least one processor to implement the defect determination method for substations as described in any embodiment of the present invention.

[0017] Fourthly, embodiments of the present invention also provide a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the defect determination method for substations as described in any embodiment of the present invention.

[0018] The technical solution of this invention obtains disconnector parameter information corresponding to each disconnector gate of the target disconnector switch. This parameter information includes disconnector arm parameters, disconnector link parameters, and disconnector mechanical parameters. Based on this disconnector parameter information and preset constraint equations, insulator rotation parameter information corresponding to each disconnector gate is determined. Finally, defect threshold information corresponding to the insulator rotation parameter information is determined. Based on the insulator rotation parameter information and the defect threshold information, the defect type is determined, and defect warning information corresponding to the defect type is generated. Based on the above technical solution, it is possible to determine whether a disconnector switch has a defect based on the parameter information of each disconnector gate in the disconnector switch, and generate corresponding defect warning information, thus minimizing losses caused by switch damage.

[0019] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments are briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a flowchart illustrating a defect determination method for substations provided in an embodiment of the present invention.

[0022] Figure 2 This is a flowchart of a defect determination method applied to a substation, provided by an embodiment of the present invention;

[0023] Figure 3 This is a structural block diagram of a defect determination device applied to a substation, provided by an embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of the electronic device provided in an embodiment of the present invention. Detailed Implementation

[0025] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0026] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0027] Example 1

[0028] Figure 1This is a flowchart illustrating a defect determination method for substations provided by an embodiment of the present invention. This embodiment is applicable to situations where the presence of a defect in a target disconnector is determined based on its disconnector parameter information and preset constraint equations, and defect warning information corresponding to the defect type is generated. This method can be executed by a defect determination device applied to the substation, which can be implemented in hardware / software and can be configured in an electronic device, such as a PC or server. It should be noted that the technical solution provided by this embodiment predicts the motion characteristics of disconnectors within the substation, determines the defect type of the target disconnector based on the prediction results, and generates warning information corresponding to the defect type. In other words, the technical solution of this embodiment is mainly applied to predicting defects in primary equipment within a substation.

[0029] like Figure 1 As shown, the method includes:

[0030] S110. Obtain the disconnector parameter information corresponding to each disconnector gate of the target disconnector.

[0031] The target disconnector can be the disconnector that needs to be processed. It should be noted that a disconnector is a switching device primarily used for "isolating power supplies, switching operations, and connecting and disconnecting small current circuits," without arc-extinguishing functionality. The disconnector gates can be understood as the various gates in the target disconnector. Disconnector parameter information includes disconnector arm parameters, disconnector link parameters, and disconnector mechanical parameters. Disconnector arm parameters can be the parameters of each switch arm in the target disconnector. Disconnector link parameters can be the parameters of each switch link in the target disconnector. Disconnector mechanical parameters can be the mechanical parameter information of the target disconnector, such as the angle between the arms.

[0032] Specifically, the disconnector parameter information corresponding to each disconnector port of the target disconnector can be obtained. Based on this parameter information, it can be determined whether the target disconnector has defects. It should be noted that different disconnectors may have different internal parameter information; therefore, for each disconnector, it is necessary to obtain the corresponding disconnector parameter information. For example, the internal structure of the target disconnector can be measured using measuring instruments to obtain the disconnector parameter information corresponding to each disconnector port.

[0033] Based on the above technical solution, before obtaining the disconnector parameter information corresponding to the target disconnector, the method includes: determining the disconnector parameter information according to the physical structure of the disconnector, and determining the parameter vector and fixed mechanical parameters based on the disconnector parameter information; and determining the preset constraint equation corresponding to the disconnector based on the parameter vector and the fixed mechanical parameters.

[0034] The physical structure can be understood as the constituent structure of the disconnector. The parameter vector can be a vector representing the various parameters within the disconnector. Fixed mechanical parameters can be understood as the constant parameters within the disconnector. Preset constraint equations can be understood as constraint equations used to determine whether the disconnector has defects.

[0035] Specifically, the process can involve determining the disconnector switch parameter information based on its physical structure, then determining the corresponding parameter vector and fixed mechanical parameters based on this parameter information, and finally obtaining the preset constraint equations corresponding to the disconnector switch based on these parameter vectors and fixed mechanical parameters. For example, for ease of description, when a parameter name appears in a statement, it refers to the physical object corresponding to that variable; when a parameter name appears in an equation, it represents a variable, such as... In the equation, represents the actual length of the connecting rod between the two pole insulators of the first disconnecting switch gate, while In the statement, it refers to the connecting rod between the two pole insulators of the first disconnecting switch gate. Based on this, the disconnecting switch parameter information may include θ. O θ: Actual rotation angle of the output shaft of the open-type disconnector mechanism box (unit: radians, range: [0, 2π]); A :The actual angle of rotation of the insulator on the contact side of the first disconnecting switch (unit: radians, range: [0, 2π]); The actual angle of rotation of the insulator on the contact finger side of the first disconnecting switch (unit: radians, range: [0, 2π]); θ B :The actual angle of rotation of the insulator on the contact side of the second disconnecting switch (unit: radians, range: [0, 2π]); The actual angle of rotation of the insulator on the contact finger side of the second disconnecting switch (unit: radians, range: [0, 2π]); θ C :The actual angle of rotation of the insulator on the contact side of the third disconnecting switch (unit: radians, range: [0, 2π]); The actual angle of rotation of the insulator on the contact finger side of the third disconnecting switch (unit: radians, range: [0, 2π]); The actual length of the connecting rod between the two pole insulators of the first disconnecting switch (unit: mm); The actual length of the connecting rod between the two pole insulators of the second disconnector switch (unit: mm); The actual length of the connecting rod between the two pole insulators of the third disconnecting switch (unit: mm); A. Actual length of the connecting rod between the gates of the second disconnector switch (unit: mm); B. Actual length of the connecting rod between the gates of the third disconnecting switch (unit: mm); The actual length of the main connecting rod (unit: mm); ρ OA : Actual length of the main crank arm (unit: mm); ρ AO The base of the insulator on the contact side of the first disconnecting switch and The actual length (in mm) of the connected crank arms; ρ AB The base of the insulator on the contact side of the first disconnecting switch and The actual length of the connected crank arms (unit: mm); The insulator base on the contact side of the first disconnecting switch and The actual length of the connected crank arms (unit: mm); The insulator base on the contact finger side of the first disconnecting switch and The actual length (in mm) of the connected crank arms; ρ BA The base of the insulator on the contact side of the second disconnecting switch and The actual length of the connected crank arms (unit: mm); The insulator base on the contact side of the second disconnecting switch and The actual length of the connected crank arms (unit: mm); The second disconnector switch contact finger side insulator base and The actual length (in mm) of the connected crank arms; ρ CB The insulator base on the contact side of the third disconnecting switch and The actual length of the connected crank arms (unit: mm); The insulator base on the contact side of the third disconnecting switch and The actual length of the connected crank arms (unit: mm); The insulator base on the contact finger side of the third disconnecting switch and Actual length of the connected crank arms (unit: mm); a: Distance between the insulator on the contact side and the insulator on the finger side of the same phase (unit: mm); b: Distance between phase insulators (unit: mm); α: Crank arm ρ AO With crutch The included angle between the two (unit: radians, range: [0, 2π]); β: the angle between the two sides of the crank arm ρ. AO With the crank arm ρ AB The included angle between the two (unit: radians, range: [0, 2π]); δ: the angle between the two sides of the crank arm ρ BA With crutch The included angle between the two (unit: radians, range: [0, 2π]); γ: the angle between the two sides of the crank arm ρ CB With crutch The included angle between them (unit: radians, range: [0, 2π]); Crank arm ρ OA With main connecting rod The included angle between them (unit: radians, range: [0, 2π]).

[0036] It should be noted that the above parameters can be constructed as the parameter vectors X1, X2, X3, X4, X5, X6 of the first-stage transmission mechanism, X2, X3, X4, X5, X6 of the fifth-stage transmission mechanism, the crank arm dead-point parameter vector R, and the fixed mechanical parameters C of the disconnecting switch, that is, X1 = [θ O θ A ρ OA ρ AO l OA ]; X3=[θ A θ B ρ AB ρ BA l AB ]; X5=[θ B θ C ρ BC ρ CB l BC ];

[0037] Based on the above parameter vectors, the following parameter constraint equations are constructed: F1 for the first-stage transmission mechanism, F2 for the second-stage transmission mechanism, F3 for the third-stage transmission mechanism, F4 for the fourth-stage transmission mechanism, F5 for the fifth-stage transmission mechanism, F6 for the sixth-stage transmission mechanism, and F7 for the crank arm's dead-point constraint equation. S .

[0038] F1: (X1[3]cos(X1[1])-X1[4]cos(X1[2])+C[1]) 2 +(X1[4]sin(X1[2])-X1[3]sin(X1[1])) 2 =(X1[5]) 2 ;

[0039] F2:(X2[4]cos(X2[2])-X2[3]cos(C[3]+X2[1])+2C[1]) 2+(X2[3]sin(C[3]+X2[1])-X2[4]sin(X2[2])) 2 =(X2[5]) 2 ;

[0040] F3: (X3[3]cos(X3[1]+C[4])-X3[4]cos(X3[2])) 2 +(X3[3]sin(X3[1]+C[4])-X3[4]sin(X3[2])+C[2]) 2 =(X3[5]) 2 ;

[0041] F4: (2C[1]-X4[3]cos(X4[1]+C[5])+X4[4]cos(X4[2])) 2 +(X4[3]sin(X4[1]+C[5])-X4[4]sin(X4[2])) 2 =(X4[5]) 2 ;

[0042] F5: (X5[3]cos(X5[1])-X5[4]cos(X5[2])) 2 +(X5[3]sin(X5[1])-X5[4]sin(X5[2])+C[2]) 2 =(X5[5]) 2 ;

[0043] F6: (2C[1]-X6[3]cos(X6[1]+C[6])+X6[4]cos(X6[2])) 2 +(X6[3]sin(X6[1]+C[6])-X6[4]sin(X6[2])) 2 =(X6[5]) 2 ;

[0044] F S :(R[2]) 2 +(R[4]) 2 -(R[3]cos(R[1])-C[1]) 2 -(R[3]sin(R[1])) 2 = 2R[2]R[4]cos(R[5]).

[0045] S120. Based on the disconnector switch parameter information and the preset constraint equation, determine the insulator rotation parameter information corresponding to each disconnector switch gate.

[0046] Among them, the insulator rotation parameter information can be the rotation angle information of the insulator corresponding to each disconnector switch gate.

[0047] Specifically, based on the disconnector switch parameter information and the corresponding preset constraint equations, the insulator rotation parameter information of each disconnector switch gate corresponding to the target disconnector switch can be determined. For example, for the insulator on the first disconnector switch gate, the preset constraint equation corresponding to the first disconnector switch gate can be selected, and the disconnector switch parameter information corresponding to the first disconnector switch gate can be obtained. By substituting the disconnector switch parameter information of the first disconnector switch gate into the preset constraint equation corresponding to the first disconnector switch gate, the insulator rotation angle information corresponding to the first disconnector switch gate can be obtained.

[0048] Based on the above technical solution, the step of determining the insulator rotation parameter information corresponding to each disconnector gate based on the disconnector switch parameter information and the preset constraint equation includes: based on the target constraint equation corresponding to each disconnector gate; and determining the insulator rotation parameter information corresponding to each disconnector gate according to the target constraint equation and the disconnector switch parameter information.

[0049] The disconnecting switch gates include a first disconnecting switch gate, a second disconnecting switch gate, and a third disconnecting switch gate. Insulators include contact-side insulators and finger-side insulators. The target constraint equations can be understood as the constraint equations corresponding to the disconnecting switch gates.

[0050] Specifically, the target constraint equations corresponding to each disconnector gate are determined, and the insulator rotation parameter information corresponding to each disconnector gate is determined based on the target constraint equations and disconnector parameter information. For example, after collecting the disconnector parameter information of the target disconnector, when it is necessary to obtain the rotation angle of the insulator on the contact side of the first disconnector gate, ρ can be input. OA ρ AO , That is, X1[3]=ρ OA X1[4]=ρ AO , Then F1 becomes: X1[2] can then be solved at θ O The range of values ​​under the condition ∈ [0, 2π], that is, the rotation angle θ of the insulator on the contact side of the first disconnecting switch. A =X1[2]. When it is necessary to obtain the rotation angle of the insulator on the contact finger side of the first disconnecting switch gate, input ρ AA1 ρ A1 , That is, X2[3]=ρ AA1 X2[4]=ρ A1 , Then F2 becomes: Solve for X2[2] at θ O The range of values ​​under the condition ∈ [0, 2π], that is, the rotation angle of the insulator on the contact finger side of the first disconnecting switch.

[0051] Furthermore, when obtaining the rotation angle of the insulator on the contact side of the second disconnector switch, input ρ AB ρ BA , That is, X3[3]=ρ AB X3[4]=ρ BA , Then F3 becomes: Solve for X3[2] at θ O The range of values ​​under the condition ∈ [0, 2π], that is, the rotation angle θ of the insulator on the contact side of the second disconnector switch. B =X3[2]; When obtaining the rotation angle of the insulator on the contact finger side of the second disconnector switch, input Right now Then F4 becomes: X4[2] can then be obtained at θ O The range of values ​​under the condition ∈ [0, 2π], that is, the rotation angle of the insulator on the contact finger side of the second disconnecting switch.

[0052] When obtaining the rotation angle of the insulator on the contact side of the third disconnector switch, input ρ BC ρ CB , That is, X5[3]=ρ BC X5[4]=ρ CB , Then F5 becomes: X5[2] can then be solved at θ O The range of values ​​under the condition ∈ [0, 2π], that is, the rotation angle θ of the insulator on the contact side of the third disconnector switch. C =X5[2]; When obtaining the rotation angle of the insulator on the contact finger side of the third disconnector switch, input Right now Then F6 becomes: X6[2] can then be solved at θ O The range of values ​​under the condition ∈ [0, 2π], that is, the rotation angle of the insulator on the contact side of the third disconnector switch.

[0053] It should be noted that the parameter in the above formula, such as C[6], can be understood as the sixth parameter in the fixed mechanical parameter C of the disconnector switch, that is, C[6] refers to γ: crank arm ρCB With crutch The angle between them.

[0054] S130. Determine the defect threshold information corresponding to the insulator rotation parameter information, determine the defect type based on the insulator rotation parameter information and the defect threshold information, and generate defect prompt information corresponding to the defect type.

[0055] The defect threshold information can be a pre-set threshold used to determine whether the target disconnector has a defect. The defect type can be understood as the type of defect present in the target disconnector, such as incomplete opening / closing, phase asynchrony, the crank arm not passing the dead point after closing, or contact finger collision. The defect indication information can be a notification indicating that the current target disconnector has a defect.

[0056] Specifically, the defect threshold information corresponding to the insulator rotation parameter information is determined. Then, based on the insulator rotation parameter information and the defect threshold information, the defect type of the target disconnector is determined, and defect prompt information corresponding to the defect type is generated. For example, the obtained insulator rotation parameter information can be compared with the preset defect threshold information. If the current insulator rotation parameter information does not meet the preset defect threshold information, it indicates that the target disconnector has a defect, and the defect type is determined. For example, if the difference between the insulator rotation parameter information and the preset difference threshold is greater than the preset difference threshold, it indicates that the target disconnector has a phase-to-phase asynchrony defect.

[0057] Based on the above technical solution, the step of determining the defect threshold information corresponding to the insulator rotation parameter information, and determining the defect type based on the insulator rotation parameter information and the defect threshold information, includes: determining the first rotation difference information based on the same-side insulator rotation parameter information, and obtaining the first defect threshold information corresponding to the target disconnecting switch; if the first rotation difference information is greater than or equal to the first defect threshold information, then it is determined that the target disconnecting switch has an interphase asynchrony defect.

[0058] The first rotation difference information can be understood as the difference in rotation information of insulators at the same position on different disconnector gates. The first defect threshold information can be a threshold information used to determine whether the target disconnector has phase-to-phase asynchronous defects.

[0059] Specifically, after obtaining the insulator rotation parameter information, based on the difference in insulator rotation information at the same position on different disconnector gates and the preset first defect threshold information, it is determined whether the target disconnector has an interphase asynchrony defect. For example, it could be the rotation angle θ of the insulator on the contact side of the first disconnector gate. A=X1[2], Rotation angle of the insulator on the contact finger side of the first disconnecting switch The rotation angle θ of the insulator on the contact side of the second disconnecting switch. B =X3[2], Rotation angle of the insulator on the contact finger side of the second disconnector switch The rotation angle θ of the insulator on the contact side of the third disconnector switch. C =X5[2], Rotation angle of the insulator on the contact finger side of the third disconnector switch Then if |θ A -θ B |≥ε or|θ A -θ C |≥ε or|θ C -θ B |≥ε or or or This indicates a potential phase-to-phase asynchrony defect in the disconnector. It should be noted that ε is a measurable parameter determined by the type of disconnector; different disconnectors correspond to different ε values.

[0060] Based on the above technical solution, determining the defect threshold information corresponding to the insulator rotation parameter information, and determining the defect type based on the insulator rotation parameter information and the defect threshold information, includes: determining the second rotation difference information according to the insulator rotation parameter information located on the same disconnecting switch gate, and obtaining the second defect threshold information corresponding to the target disconnecting switch; if the second rotation difference information is greater than or equal to the second defect threshold information, then it is determined that the target disconnecting switch has a collision defect.

[0061] The second rotation difference information can be understood as the difference in insulator rotation parameters between the contacts and fingers on the same disconnector gate. The second defect threshold information can be a threshold used to determine whether the target disconnector has a collision defect.

[0062] Specifically, after obtaining the insulator rotation parameter information, based on the difference in insulator rotation parameter information between the contacts and fingers on the same disconnector gate and the preset second defect threshold information, it is determined whether the target disconnector has a collision defect. For example, it could be the rotation angle θ of the insulator on the contact side of the first disconnector gate. A =X1[2], Rotation angle of the insulator on the contact finger side of the first disconnecting switch The rotation angle θ of the insulator on the contact side of the second disconnecting switch. B =X3[2], Rotation angle of the insulator on the contact finger side of the second disconnector switch The rotation angle θ of the insulator on the contact side of the third disconnector switch. C=X5[2], Rotation angle of the insulator on the contact finger side of the third disconnector switch like or or (where σ is a measurable parameter), then it is predicted that the disconnecting switch has a contact finger collision defect.

[0063] Based on the above technical solution, determining the defect threshold information corresponding to the insulator rotation parameter information, and determining the defect type based on the insulator rotation parameter information and the defect threshold information, includes: determining the third rotation difference information based on the maximum and minimum rotation parameter information corresponding to the current insulator, and obtaining the third defect threshold information corresponding to the target disconnecting switch; if the third rotation difference information is not equal to the third defect threshold information, then it is determined that the target disconnecting switch has a defect of incomplete opening and closing.

[0064] Among them, the maximum rotation parameter information can be understood as the maximum value of the rotation parameter of the current insulator, and correspondingly, the minimum rotation parameter information can be understood as the minimum value of the rotation parameter of the previous insulator. The third rotation difference information can be the difference between the maximum rotation parameter information and the minimum rotation parameter information. The third defect threshold information can be the threshold information used to determine whether the target disconnecting switch has a defect of incomplete opening or closing.

[0065] Specifically, after obtaining the insulator rotation parameter information, the third rotation difference information is determined based on the maximum and minimum rotation parameter information corresponding to the current insulator. Then, based on the third rotation difference information and the third defect threshold information, it is determined whether the target disconnecting switch has a defect of incomplete opening or closing. For example, this could be the rotation angle θ of the insulator on the contact side of the first disconnecting switch. A =X1[2], Rotation angle of the insulator on the contact finger side of the first disconnecting switch The rotation angle θ of the insulator on the contact side of the second disconnecting switch. B =X3[2], Rotation angle of the insulator on the contact finger side of the second disconnector switch The rotation angle θ of the insulator on the contact side of the third disconnector switch. C =X5[2], Rotation angle of the insulator on the contact finger side of the third disconnector switch like or or or or or This indicates that the isolating switch has a defect of incomplete opening and closing.

[0066] Based on the above technical solution, determining the defect threshold information corresponding to the insulator rotation parameter information, and determining the defect type based on the insulator rotation parameter information and the defect threshold information, includes: determining the crank arm dead point parameter according to the preset constraint equation and the disconnecting switch mechanical parameters; if the crank arm dead point parameter is less than the rotation parameter information of the insulator on the phase contact side of the first disconnecting switch gate, then it is determined that the target disconnecting switch has a dead point defect.

[0067] Among them, the crank arm dead point parameter can be used to determine whether the crank arm has passed the dead point.

[0068] Specifically, after obtaining the insulator rotation parameter information, the crank arm dead point parameter is determined according to the preset constraint equation and the mechanical parameters of the disconnecting switch. If the crank arm dead point parameter is less than the rotation parameter information of the insulator on the phase contact side of the first disconnecting switch gate, it indicates that the crank arm of the target disconnecting switch has not passed the dead point after closing, which means that the target disconnecting switch has a dead point failure defect. For example, it could be the output shaft θ of the mechanism box. O When the maximum value is obtained, the rotation angle θ of the insulator on the contact side of the first disconnecting switch can be obtained from equation F1. A Let R[5] = π, then F S Become Then solve for R[1], if R[1]≤θ A If this is the case, it is predicted that the disconnecting switch has a defect where the mechanism does not pass the dead point after closing.

[0069] The technical solution of this invention obtains disconnector parameter information corresponding to each disconnector gate of the target disconnector switch. This parameter information includes disconnector arm parameters, disconnector link parameters, and disconnector mechanical parameters. Based on this disconnector parameter information and preset constraint equations, insulator rotation parameter information corresponding to each disconnector gate is determined. Finally, defect threshold information corresponding to the insulator rotation parameter information is determined. Based on the insulator rotation parameter information and the defect threshold information, the defect type is determined, and defect warning information corresponding to the defect type is generated. Based on the above technical solution, it is possible to determine whether a disconnector switch has a defect based on the parameter information of each disconnector gate in the disconnector switch, and generate corresponding defect warning information, thus minimizing losses caused by switch damage.

[0070] Example 2

[0071] Figure 2This is a flowchart illustrating a defect determination method applied to substations according to an embodiment of the present invention. This embodiment further optimizes the aforementioned defect determination method applied to substations based on the previous embodiments. Specific implementation details can be found in the technical solution of this embodiment. Technical terms that are the same as or corresponding to those in the previous embodiments will not be repeated here.

[0072] like Figure 2 As shown, the method includes:

[0073] Obtain disconnect switch parameter information: Specifically, collect the crank arm and connecting rod lengths. ρ OA ρ AO ρ AB , ρ BA , ρ CB , It should be noted that once the disconnecting switch is installed, the fixed mechanical parameter C of the disconnecting switch is a fixed quantity.

[0074] Determine insulator rotation parameter information: Specifically, when it is necessary to obtain the rotation angle of the insulator on the contact side of the first disconnecting switch gate, input ρ. OA ρ AO , That is, X1[3]=ρ OA X1[4]=ρ AO , Then F1 becomes: X1[2] can then be solved at θ O The range of values ​​under the condition ∈ [0, 2π], that is, the rotation angle θ of the insulator on the contact side of the first disconnecting switch. A =X1[2]. When it is necessary to obtain the rotation angle of the insulator on the contact finger side of the first disconnecting switch gate, input Right now Then F2 becomes: Solve for X2[2] at θ O The range of values ​​under the condition ∈ [0, 2π], that is, the rotation angle of the insulator on the contact finger side of the first disconnecting switch. When obtaining the rotation angle of the insulator on the contact side of the second disconnector switch, input ρ AB ρ BA , That is, X3[3]=ρ AB X3[4]=ρ BA , Then F3 becomes: Solve for X3[2] at θ OThe range of values ​​under the condition ∈ [0, 2π], that is, the rotation angle θ of the insulator on the contact side of the second disconnector switch. B =X3[2]; When obtaining the rotation angle of the insulator on the contact finger side of the second disconnector switch, input Right now Then F4 becomes: X4[2] can then be obtained at θ O The range of values ​​under the condition ∈ [0, 2π], that is, the rotation angle of the insulator on the contact finger side of the second disconnecting switch. When obtaining the rotation angle of the insulator on the contact side of the third disconnector switch, input ρ BC ρ CB , That is, X5[3]=ρ BC X5[4]=ρ CB , Then F5 becomes: X5[2] can then be solved at θ O The range of values ​​under the condition ∈ [0, 2π], that is, the rotation angle θ of the insulator on the contact side of the third disconnector switch. C =X5[2]; When obtaining the rotation angle of the insulator on the contact finger side of the third disconnector switch, input Right now Then F6 becomes: X6[2] can then be solved at θ O The range of values ​​under the condition ∈ [0, 2π], that is, the rotation angle of the insulator on the contact side of the third disconnector switch.

[0075] Determine the defect type: Specifically, determine whether the target disconnector has a phase-to-phase asynchrony defect, and the rotation angle θ of the insulator on the contact side of the first disconnector gate. A =X1[2], Rotation angle of the insulator on the contact finger side of the first disconnecting switch The rotation angle θ of the insulator on the contact side of the second disconnecting switch. B =X3[2], Rotation angle of the insulator on the contact finger side of the second disconnector switch The rotation angle θ of the insulator on the contact side of the third disconnector switch. C =X5[2], Rotation angle of the insulator on the contact finger side of the third disconnector switch Then if |θ A -θ B |≥ε or|θ A -θ C |≥ε or|θ C -θ B |≥ε or or or This indicates that the disconnecting switch has a phase-to-phase asynchrony defect.

[0076] To determine whether the target disconnector has a contact finger collision defect, the rotation angle θ of the insulator on the contact side of the first disconnector gate is used. A =X1[2], Rotation angle of the insulator on the contact finger side of the first disconnecting switch The rotation angle θ of the insulator on the contact side of the second disconnecting switch. B =X3[2], Rotation angle of the insulator on the contact finger side of the second disconnector switch The rotation angle θ of the insulator on the contact side of the third disconnector switch. C =X5[2], Rotation angle of the insulator on the contact finger side of the third disconnector switch like or or (where σ is a measurable parameter), then it is predicted that the disconnecting switch has a contact finger collision defect.

[0077] To determine if the target disconnector has a defect of incomplete opening or closing, the rotation angle θ of the insulator on the contact side of the first disconnector is used. A =X1[2], Rotation angle of the insulator on the contact finger side of the first disconnecting switch The rotation angle θ of the insulator on the contact side of the second disconnecting switch. B =X3[2], Rotation angle of the insulator on the contact finger side of the second disconnector switch The rotation angle θ of the insulator on the contact side of the third disconnector switch. C =X5[2], Rotation angle of the insulator on the contact finger side of the third disconnector switch like or or or or or This indicates that the isolating switch has a defect of incomplete opening and closing.

[0078] To determine if the target disconnect switch has a defect where the mechanism fails to pass the dead point after closing, check the output shaft θ of the mechanism box. O When the maximum value is obtained, the rotation angle θ of the insulator on the contact side of the first disconnecting switch can be obtained from equation F1. A Let R[5] = π, then F S Become Then solve for R[1], if R[1]≤θ A If this is the case, it is predicted that the disconnecting switch has a defect where the mechanism does not pass the dead point after closing.

[0079] Output defect alert information: Specifically, once a defect is determined to exist in the target disconnect switch, a defect alert information corresponding to the defect type is generated. This information is used to alert the user that the target disconnect switch is defective, thereby minimizing the losses caused by the switch defect.

[0080] The technical solution of this invention obtains disconnector parameter information corresponding to each disconnector gate of the target disconnector switch. This parameter information includes disconnector arm parameters, disconnector link parameters, and disconnector mechanical parameters. Based on this disconnector parameter information and preset constraint equations, insulator rotation parameter information corresponding to each disconnector gate is determined. Finally, defect threshold information corresponding to the insulator rotation parameter information is determined. Based on the insulator rotation parameter information and the defect threshold information, the defect type is determined, and defect warning information corresponding to the defect type is generated. Based on the above technical solution, it is possible to determine whether a disconnector switch has a defect based on the parameter information of each disconnector gate in the disconnector switch, and generate corresponding defect warning information, thus minimizing losses caused by switch damage.

[0081] Example 3

[0082] Figure 3 This is a structural block diagram of a defect determination device applied to a substation, provided by an embodiment of the present invention. The device includes: a parameter information acquisition module 310, a rotation parameter information determination module 320, and a prompt information generation module 330.

[0083] The parameter information acquisition module 310 is used to acquire disconnector switch parameter information corresponding to each disconnector switch gate of the target disconnector switch; wherein, the parameter information includes disconnector switch crank arm parameters, disconnector switch connecting rod parameters, and disconnector switch mechanical parameters;

[0084] The rotation parameter information determination module 320 is used to determine the insulator rotation parameter information corresponding to each disconnector gate based on the disconnector switch parameter information and the preset constraint equation;

[0085] The prompt information generation module 330 is used to determine the defect threshold information corresponding to the insulator rotation parameter information, determine the defect type based on the insulator rotation parameter information and the defect threshold information, and generate defect prompt information corresponding to the defect type.

[0086] Based on the above technical solution, the parameter information acquisition module is used to determine the isolation switch parameter information according to the physical structure of the isolation switch before acquiring the isolation switch parameter information corresponding to the target isolation switch, and to determine the parameter vector and fixed mechanical parameters based on the isolation switch parameter information; and to determine the preset constraint equation corresponding to the isolation switch based on the parameter vector and the fixed mechanical parameters.

[0087] Based on the above technical solution, the rotation parameter information determination module is used to determine the insulator rotation parameter information corresponding to each disconnector gate based on the target constraint equation corresponding to each disconnector gate; wherein, the disconnector gate includes a first disconnector gate, a second disconnector gate, and a third disconnector gate; according to the target constraint equation and the disconnector parameter information, the insulator rotation parameter information corresponding to each disconnector gate is determined; wherein, the insulator includes a contact-side insulator and a finger-side insulator.

[0088] Based on the above technical solution, the prompt information generation module is used to determine the first rotation difference information based on the rotation parameter information of the insulator on the same side, and obtain the first defect threshold information corresponding to the target disconnecting switch; if the first rotation difference information is greater than or equal to the first defect threshold information, it is determined that the target disconnecting switch has a phase-to-phase asynchrony defect.

[0089] Based on the above technical solution, the prompt information generation module is used to determine the second rotation difference information according to the rotation parameter information of the insulators located on the same disconnecting switch gate, and to obtain the second defect threshold information corresponding to the target disconnecting switch; if the second rotation difference information is greater than or equal to the second defect threshold information, it is determined that the target disconnecting switch has a collision defect.

[0090] Based on the above technical solution, the prompt information generation module is used to determine the third rotation difference information based on the maximum and minimum rotation parameter information corresponding to the current insulator, and to obtain the third defect threshold information corresponding to the target disconnecting switch; if the third rotation difference information is not equal to the third defect threshold information, it is determined that the target disconnecting switch has a defect of incomplete opening and closing.

[0091] Based on the above technical solution, the prompt information generation module is used to determine the dead point parameter of the crank arm according to the preset constraint equation and the mechanical parameters of the disconnecting switch; if the dead point parameter of the crank arm is less than the rotation parameter information of the phase contact side insulator located at the gate of the first disconnecting switch, it is determined that the target disconnecting switch has a defect of not passing the dead point.

[0092] The technical solution of this invention obtains disconnector parameter information corresponding to each disconnector gate of the target disconnector switch. This parameter information includes disconnector arm parameters, disconnector link parameters, and disconnector mechanical parameters. Based on this disconnector parameter information and preset constraint equations, insulator rotation parameter information corresponding to each disconnector gate is determined. Finally, defect threshold information corresponding to the insulator rotation parameter information is determined. Based on the insulator rotation parameter information and the defect threshold information, the defect type is determined, and defect warning information corresponding to the defect type is generated. Based on the above technical solution, it is possible to determine whether a disconnector switch has a defect based on the parameter information of each disconnector gate in the disconnector switch, and generate corresponding defect warning information, thus minimizing losses caused by switch damage.

[0093] The defect determination device for substations provided in this invention can execute the defect determination method for substations provided in any embodiment of this disclosure, and has the corresponding functional modules and beneficial effects of the method.

[0094] It is worth noting that the various units and modules included in the above-mentioned device are only divided according to functional logic, but are not limited to the above division, as long as the corresponding functions can be realized; in addition, the specific names of each functional unit are only for easy differentiation and are not used to limit the protection scope of the embodiments of this disclosure.

[0095] Example 4

[0096] Figure 4 A schematic diagram of an electronic device 10 that can be used to implement embodiments of the present invention is shown. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processors, cellular phones, smartphones, wearable devices (e.g., helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely illustrative and are not intended to limit the implementation of the invention described and / or claimed herein.

[0097] like Figure 4As shown, the electronic device 10 includes at least one processor 11 and a memory, such as a read-only memory (ROM) 12 or a random access memory (RAM) 13, communicatively connected to the at least one processor 11. The memory stores computer programs executable by the at least one processor. The processor 11 can perform various appropriate actions and processes based on the computer program stored in the ROM 12 or loaded from storage unit 18 into the RAM 13. The RAM 13 may also store various programs and data required for the operation of the electronic device 10. The processor 11, ROM 12, and RAM 13 are interconnected via a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0098] Multiple components in electronic device 10 are connected to I / O interface 15, including: input unit 16, such as keyboard, mouse, etc.; output unit 17, such as various types of displays, speakers, etc.; storage unit 18, such as disk, optical disk, etc.; and communication unit 19, such as network card, modem, wireless transceiver, etc. Communication unit 19 allows electronic device 10 to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0099] Processor 11 can be a variety of general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special-purpose artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any suitable processor, controller, microcontroller, etc. Processor 11 performs the various methods and processes described above, such as defect determination methods applied to substations.

[0100] In some embodiments, the defect determination method for a substation can be implemented as a computer program tangibly contained in a computer-readable storage medium, such as storage unit 18. In some embodiments, part or all of the computer program can be loaded and / or installed on electronic device 10 via ROM 12 and / or communication unit 19. When the computer program is loaded into RAM 13 and executed by processor 11, one or more steps of the defect determination method for a substation described above can be performed. Alternatively, in other embodiments, processor 11 can be configured to perform the defect determination method for a substation by any other suitable means (e.g., by means of firmware).

[0101] Various embodiments of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), systems-on-a-chip (SoCs), payload-programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments may include implementations in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general-purpose programmable processor, capable of receiving data and instructions from a storage system, at least one input device, and at least one output device, and transmitting data and instructions to the storage system, the at least one input device, and the at least one output device.

[0102] Computer programs used to implement the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when executed by the processor, the computer programs cause the functions / operations specified in the flowcharts and / or block diagrams to be performed. The computer programs may be executed entirely on a machine, partially on a machine, or as a standalone software package, partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0103] In the context of this invention, a computer-readable storage medium can be a tangible medium that may contain or store a computer program for use by or in conjunction with an instruction execution system, apparatus, or device. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination thereof. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0104] To provide interaction with a user, the systems and techniques described herein can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user provides input to the electronic device. Other types of devices can also be used to provide interaction with the user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including sound input, voice input, or tactile input).

[0105] The systems and technologies described herein can be implemented in computing systems that include backend components (e.g., as data servers), or computing systems that include middleware components (e.g., application servers), or computing systems that include frontend components (e.g., user computers with graphical user interfaces or web browsers through which users can interact with implementations of the systems and technologies described herein), or any combination of such backend, middleware, or frontend components. The components of the system can be interconnected via digital data communication of any form or medium (e.g., communication networks). Examples of communication networks include local area networks (LANs), wide area networks (WANs), blockchain networks, and the Internet.

[0106] Computer systems can include clients and servers. Clients and servers are generally located far apart and typically interact through communication networks. The client-server relationship is created by computer programs running on the respective computers and having a client-server relationship with each other. The server can be a cloud server, also known as a cloud computing server or cloud host, which is a hosting product within the cloud computing service system to address the shortcomings of traditional physical hosts and VPS services, such as high management difficulty and weak business scalability.

[0107] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0108] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A defect determination method applied to substations, characterized in that, include: Obtain disconnector parameter information corresponding to each disconnector gate of the target disconnector; wherein, the parameter information includes disconnector crank arm parameters, disconnector linkage parameters, and disconnector mechanical parameters; Based on the disconnector switch parameter information and the preset constraint equation, determine the insulator rotation parameter information corresponding to each disconnector switch gate; Determine the defect threshold information corresponding to the insulator rotation parameter information, determine the defect type of the target disconnecting switch based on the insulator rotation parameter information and the defect threshold information, and generate defect prompt information corresponding to the defect type.

2. The method according to claim 1, characterized in that, Before obtaining the disconnector parameter information corresponding to the target disconnector, the process includes: The disconnector switch parameter information is determined based on its physical structure, and the parameter vector and fixed mechanical parameters are determined based on the disconnector switch parameter information. Based on the parameter vector and the fixed mechanical parameters, a preset constraint equation corresponding to the disconnecting switch is determined.

3. The method according to claim 1, characterized in that, The step of determining the insulator rotation parameter information corresponding to each disconnector switch opening based on the disconnector switch parameter information and preset constraint equations includes: Determine the target constraint equations corresponding to each disconnector gate; wherein, the disconnector gate includes a first disconnector gate, a second disconnector gate, and a third disconnector gate; Based on the target constraint equation and the disconnecting switch parameter information, determine the insulator rotation parameter information corresponding to each disconnecting switch gate; wherein, the insulator includes contact-side insulator and contact-finger-side insulator.

4. The method according to claim 1, characterized in that, The step of determining the defect threshold information corresponding to the insulator rotation parameter information, and determining the defect type based on the insulator rotation parameter information and the defect threshold information, includes: The first rotation difference information is determined based on the rotation parameter information of the insulator on the same side, and the first defect threshold information corresponding to the target disconnecting switch is obtained; If the first rotation difference information is greater than or equal to the first defect threshold information, then it is determined that the target disconnect switch has an interphase asynchrony defect.

5. The method according to claim 1, characterized in that, The step of determining the defect threshold information corresponding to the insulator rotation parameter information, and determining the defect type based on the insulator rotation parameter information and the defect threshold information, includes: The second rotation difference information is determined based on the rotation parameter information of the insulators located on the same disconnector gate, and the second defect threshold information corresponding to the target disconnector is obtained. If the second rotation difference information is greater than or equal to the second defect threshold information, then it is determined that the target disconnect switch has a collision defect.

6. The method according to claim 1, characterized in that, The step of determining the defect threshold information corresponding to the insulator rotation parameter information, and determining the defect type based on the insulator rotation parameter information and the defect threshold information, includes: The third rotation difference information is determined based on the maximum and minimum rotation parameter information corresponding to the current insulator, and the third defect threshold information corresponding to the target disconnecting switch is obtained. If the third rotation difference information is not equal to the third defect threshold information, then it is determined that the target disconnecting switch has a defect of incomplete opening and closing.

7. The method according to claim 1, characterized in that, The step of determining the defect threshold information corresponding to the insulator rotation parameter information, and determining the defect type based on the insulator rotation parameter information and the defect threshold information, includes: The dead point parameters of the crank arm are determined based on the preset constraint equations and the mechanical parameters of the disconnecting switch. If the dead point parameter of the crank arm is less than the rotation parameter information of the insulator on the contact side of the first disconnecting switch gate, then it is determined that the target disconnecting switch has a defect of not passing the dead point.

8. A defect determination device applied to a substation, characterized in that, include: The parameter information acquisition module is used to acquire disconnector parameter information corresponding to each disconnector gate of the target disconnector; wherein, the parameter information includes disconnector crank arm parameters, disconnector connecting rod parameters, and disconnector mechanical parameters; The rotation parameter information determination module is used to determine the insulator rotation parameter information corresponding to each disconnector gate based on the disconnector switch parameter information and the preset constraint equation; The prompt information generation module is used to determine the defect threshold information corresponding to the insulator rotation parameter information, determine the defect type of the target disconnecting switch based on the insulator rotation parameter information and the defect threshold information, and generate defect prompt information corresponding to the defect type.

9. An electronic device, characterized in that, The electronic device includes: One or more processors; and A memory communicatively connected to the one or more processors; wherein, The memory stores a computer program that can be executed by the one or more processors, the computer program being executed by the one or more processors to enable the one or more processors to perform the defect determination method for a substation as described in any one of claims 1-7.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions that, when executed by a processor, implement the defect determination method for substations as described in any one of claims 1-7.

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