A method and system for diagnosing mechanical defects of disconnectors based on output power
By acquiring and correcting the real-time motor output power, mechanical characteristic values, and environmental characteristic values of the disconnecting switch, and combining them with a three-dimensional environmental characteristic curve function, the problem of insufficient accuracy in diagnosing mechanical defects of disconnecting switches under the influence of environmental factors in the existing technology has been solved, and high-accuracy diagnosis of mechanical defects and component positioning have been achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- STATE GRID ANHUI ELECTRIC POWER CO LTD
- Filing Date
- 2023-05-19
- Publication Date
- 2026-06-23
Smart Images
Figure CN116839879B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of disconnector technology, and more specifically, to a method and system for diagnosing mechanical defects in disconnectors based on output power. Background Technology
[0002] The use of gas-insulated switchgear (GIS) in power grids is increasing. The disconnecting switch in GIS equipment is used to create a break point for inspection and equipment maintenance. Since disconnecting switches generally operate in outdoor environments, they are susceptible to various defects and failures due to corrosion from harsh outdoor conditions.
[0003] Chinese invention patent application CN202010482384.0 discloses a method for diagnosing mechanical faults in disconnectors based on motor output power. It utilizes a support vector machine diagnostic model to quickly and accurately diagnose the mechanical condition of the tested high-voltage disconnector, contributing to the intelligent diagnosis of its mechanical condition. Another example is Chinese invention patent application CN202110429389.1, which discloses a method for diagnosing faults in GIS disconnectors. By effectively combining on-site testing and laboratory experiments, it can provide a quantitative characterization of the fault severity, enabling technicians to address faults more effectively. Yet another example is Chinese invention patent application CN201611047425.3, which discloses a method for monitoring faults in high-voltage disconnectors and their transmission mechanisms. By installing vibration sensors on the active crank arm and shaft of the disconnector, it can effectively and accurately collect vibration signals, providing valuable data for subsequent analysis and processing to understand the equipment's operating status.
[0004] It is evident that there are still many unproven technical solutions for monitoring and diagnosing mechanical faults in disconnecting switches in practical applications. Summary of the Invention
[0005] Based on this, in order to perform real-time diagnosis of mechanical defects in disconnecting switches, the present invention provides a method and system for diagnosing mechanical defects in disconnecting switches based on output power, the specific technical solution of which is as follows:
[0006] A method for diagnosing mechanical defects in disconnect switches based on output power, comprising the following steps:
[0007] Obtain the real-time motor output power of the disconnector switch;
[0008] Obtain the real-time mechanical characteristic values of the disconnecting switch;
[0009] Obtain real-time environmental characteristic values of the disconnecting switch;
[0010] The real-time motor output power and the real-time mechanical characteristic value are corrected based on the real-time environmental characteristic value;
[0011] Based on the corrected real-time motor output power and the corrected real-time mechanical characteristic value, the mechanical defect status of the disconnecting switch is diagnosed in real time.
[0012] The method for diagnosing mechanical defects in disconnecting switches based on output power corrects the real-time motor output power and the real-time mechanical characteristic value according to the real-time environmental characteristic value, and then diagnoses the mechanical defect status of the disconnecting switch in real time based on the corrected real-time motor output power and the corrected real-time mechanical characteristic value. By taking into account the influence of environmental factors on the real-time motor output power and the real-time mechanical characteristic value, the accuracy of diagnosing the mechanical defect status of disconnecting switches can be improved.
[0013] Furthermore, the specific method for real-time diagnosis of mechanical defect status of disconnecting switches based on the corrected real-time motor output power and the corrected real-time mechanical characteristic values includes the following steps:
[0014] Based on the corrected real-time motor output power and the corrected real-time mechanical characteristic value, determine whether there is a mechanical defect in the disconnect switch;
[0015] If the disconnecting switch has a mechanical defect, then calculate the correlation between the corrected real-time motor output power and the corrected real-time mechanical characteristic value;
[0016] Based on the correlation, the mechanical components corresponding to the mechanical defects of the disconnecting switch are determined, thereby enabling real-time diagnosis of the mechanical defect status of the disconnecting switch.
[0017] Furthermore, the specific method for correcting the real-time motor output power and the real-time mechanical characteristic value based on the real-time environmental characteristic value includes the following steps:
[0018] Based on the real-time environmental feature values, obtain the three-dimensional environmental feature curve function F(X,Y,Z) corresponding to the real-time environmental features;
[0019] Obtain the position coordinates (X1, Y1, Z1) of the disconnect switch drive motor and the position coordinates (X2, Y2, Z2) of the disconnect switch transmission components;
[0020] Based on the three-dimensional feature curve function F(X,Y,Z), the position coordinates (X1,Y1,Z1) of the disconnector drive motor, and the position coordinates (X2,Y2,Z2) of the disconnector transmission component, the first environmental feature value F(X1,Y1,Z1) corresponding to the position coordinates of the disconnector drive motor and the second environmental feature value F(X2,Y2,Z2) corresponding to the position coordinates of the disconnector transmission component are obtained.
[0021] The real-time motor output power is corrected based on the first environmental characteristic value, and the real-time mechanical characteristic value is corrected based on the second environmental characteristic value.
[0022] Furthermore, the specific methods for correcting the real-time motor output power based on the first environmental characteristic value and correcting the real-time mechanical characteristic value based on the second environmental characteristic value include the following steps:
[0023] Obtain the correction factor ε for the i-th first environmental feature value 1.i and the i-th second environmental feature value ε 2.i ;
[0024] According to the formula Calculate the correction coefficient ε' of the real-time motor output power, and correct the real-time motor output power according to the correction coefficient ε';
[0025] According to the formula Calculate the correction coefficient ε” of the real-time mechanical characteristic value, and correct the real-time mechanical characteristic value according to the correction coefficient ε”;
[0026] Where M represents the number of second environmental characteristic values and N represents the number of first environmental characteristic values.
[0027] Furthermore, obtain the correction factor ε for the i-th first environmental feature value. 1.i The specific method includes the following steps:
[0028] Obtain the first environmental feature standard value δ corresponding to the i-th first environmental feature value. i ';
[0029] According to the formula Obtain the correction factor ε for the i-th first environmental feature value 1.i .
[0030] Furthermore, obtain the i-th second environmental feature value ε 2.i The specific method for adjusting the correction factor includes the following steps:
[0031] Obtain the standard value δ of the second environmental feature corresponding to the i-th second environmental feature value. i ”;
[0032] According to the formula Obtain the correction factor ε for the i-th second environmental feature value 2.i .
[0033] A mechanical defect diagnosis system for disconnecting switches based on output power includes an acquisition module, a correction module, and a diagnosis module.
[0034] The acquisition module is used to acquire the real-time motor output power, real-time mechanical characteristic value, and real-time environmental characteristic value of the disconnecting switch.
[0035] The correction module is used to correct the real-time motor output power and the real-time mechanical characteristic value based on the real-time environmental characteristic value.
[0036] The diagnostic module is used to perform real-time diagnosis of the mechanical defect status of the disconnector switch based on the corrected real-time motor output power and the corrected real-time mechanical characteristic value.
[0037] Furthermore, the diagnostic module includes a mechanical defect judgment unit, a correlation calculation unit, and a real-time diagnostic unit.
[0038] The mechanical defect judgment unit is used to determine whether there is a mechanical defect in the disconnector based on the corrected real-time motor output power and the corrected real-time mechanical characteristic value.
[0039] The correlation calculation unit is used to calculate the correlation between the corrected real-time motor output power and the corrected real-time mechanical characteristic value.
[0040] The real-time diagnostic unit is used to determine the mechanical component corresponding to the mechanical defect of the disconnecting switch based on the correlation degree, so as to realize the real-time diagnosis of the mechanical defect status of the disconnecting switch.
[0041] A computer-readable storage medium storing a computer program that, when executed by a processor, implements the aforementioned method for diagnosing mechanical defects in disconnecting switches based on output power. Attached Figure Description
[0042] The invention will be further understood from the following description taken in conjunction with the accompanying drawings. The components in the drawings are not necessarily drawn to scale, but rather the emphasis is on illustrating the principles of the embodiments. In different views, the same reference numerals designate corresponding parts.
[0043] Figure 1 This is an overall flow diagram of a method for diagnosing mechanical defects in disconnect switches based on output power, according to an embodiment of the present invention.
[0044] Figure 2This is an overall flow diagram of a method for diagnosing mechanical defects in disconnect switches based on output power, according to another embodiment of the present invention. Detailed Implementation
[0045] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to its embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the scope of protection of the invention.
[0046] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.
[0047] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0048] In this invention, "first" and "second" do not represent a specific quantity or order, but are merely used to distinguish names.
[0049] like Figure 1 As shown, an embodiment of the present invention provides a method for diagnosing mechanical defects in disconnect switches based on output power, which includes the following steps:
[0050] S1, obtain the real-time motor output power of the disconnect switch.
[0051] Here, the motor includes, but is not limited to, a drive motor used to drive the transmission components of the disconnecting switch to achieve the opening and closing action of the disconnecting switch.
[0052] S2, obtain the real-time mechanical characteristic value of the disconnector switch.
[0053] The real-time mechanical characteristic values include, but are not limited to, the acoustic signal characteristic values and vibration signal characteristic values during the operation of the disconnect switch drive motor.
[0054] S3, obtain the real-time environmental characteristic values of the disconnecting switch.
[0055] The real-time environmental characteristics include, but are not limited to, the real-time ambient temperature, real-time ambient humidity, and real-time ambient noise values of the disconnector switch.
[0056] S4, Correct the real-time motor output power and the real-time mechanical characteristic value based on the real-time environmental characteristic value.
[0057] S5. Based on the corrected real-time motor output power and the corrected real-time mechanical characteristic value, perform real-time diagnosis of the mechanical defect status of the disconnecting switch.
[0058] In many cases, changes in the real-time environment can lead to errors in the collected real-time motor output power and real-time mechanical characteristic values. If these errors are not taken into account, relying solely on real-time motor output power and real-time mechanical characteristic values to diagnose the mechanical defect status of the disconnector switch may result in misjudgment of the disconnector switch's mechanical defect status.
[0059] The method for diagnosing mechanical defects in disconnecting switches based on output power reduces the possibility of misjudging the mechanical defect status of disconnecting switches by taking into account the influence of real-time environmental characteristics on real-time motor output power and real-time mechanical characteristics.
[0060] In some cases, mechanical defects in disconnect switches include mechanical defects in the drive motor and transmission components. The results of real-time diagnosis of the mechanical defect status of the disconnect switch, based on the corrected real-time motor output power and the corrected real-time mechanical characteristic values, may include mechanical defects in the drive motor and / or transmission components. Without a final inspection and diagnosis of the actual location of the disconnect switch with mechanical defects, misjudgments are likely to occur.
[0061] To more accurately detect and diagnose mechanical defects in disconnect switches, such as Figure 2 As shown, in step S5, the specific method for real-time diagnosis of the mechanical defect status of the disconnector switch based on the corrected real-time motor output power and the corrected real-time mechanical characteristic value includes the following steps:
[0062] S50, based on the corrected real-time motor output power and the corrected real-time mechanical characteristic value, determine whether there is a mechanical defect in the disconnector.
[0063] The method for determining whether the disconnector has a mechanical defect based on the corrected real-time motor output power includes comparing whether the time during which the corrected real-time motor output power is greater than a preset motor output power threshold is greater than a first preset time threshold. If so, it is determined that the disconnector has a mechanical defect. The preset motor output power threshold can be obtained by collecting historical fault output power data when multiple disconnector drive motors have mechanical defects and historical normal output power data when there are no mechanical defects, comparing the historical fault output power and the historical normal output power.
[0064] Of course, it is also possible to compare whether the similarity between the function curve corresponding to the real-time motor output power after correction and the function curve corresponding to the fault motor output power is greater than the first preset similarity threshold. If so, it is determined that the disconnecting switch has a mechanical defect.
[0065] The method for determining whether the disconnector has a mechanical defect based on the corrected real-time mechanical characteristic value includes comparing whether the fault similarity between the corrected real-time mechanical characteristic value and the defective mechanical characteristic value is greater than a second similarity threshold. If the fault similarity is greater than the second similarity threshold, then the disconnector is determined to have a mechanical defect. The real-time mechanical characteristic value here includes, but is not limited to, the real-time mechanical characteristic value of the drive motor during the opening and closing operation and the real-time mechanical characteristic value of the transmission components during the opening and closing operation. The defective mechanical characteristic value includes, but is not limited to, the defective mechanical characteristic value of the drive motor during the opening and closing operation and the defective mechanical characteristic value of the transmission components during the opening and closing operation.
[0066] Since the first similarity threshold, the second similarity threshold, the preset motor output power threshold, and the first preset time threshold can be adjusted and set according to the actual situation, they will not be elaborated here.
[0067] S51, if the disconnecting switch has a mechanical defect, calculate the correlation between the corrected real-time motor output power and the corrected real-time mechanical characteristic value.
[0068] Here, the corrected real-time motor output power and the corrected real-time mechanical characteristic value can be preprocessed, such as by normalization. Then, the power curve corresponding to the preprocessed real-time motor output power and the characteristic curve corresponding to the real-time mechanical characteristic value can be obtained. Finally, the correlation coefficient between the power curve and the characteristic curve can be calculated, and the correlation coefficient can be used as the degree of correlation between the corrected real-time motor output power and the corrected real-time mechanical characteristic value.
[0069] S52, Based on the correlation, determine the mechanical component corresponding to the mechanical defect of the disconnecting switch, and realize real-time diagnosis of the mechanical defect status of the disconnecting switch.
[0070] Assuming the correlation degree is 'a', if the correlation degree is greater than the preset correlation degree value, it can be determined that the mechanical component corresponding to the mechanical defect of the disconnector detected based on the corrected real-time motor output power is the same as the mechanical component corresponding to the mechanical defect of the disconnector detected based on the corrected real-time mechanical feature value, and the mechanical component corresponding to the mechanical defect of the disconnector is the drive motor; otherwise, based on the corrected real-time motor output power, it is determined whether the disconnector has a mechanical defect. If so, it is determined that the disconnector has at least two mechanical defects, one of which corresponds to the drive motor, and the other corresponds to the mechanical component corresponding to the actual position of the real-time mechanical feature value. If not, it is determined that the mechanical component corresponding to the mechanical defect of the disconnector corresponds to the actual position of the real-time mechanical feature value, and the disconnector drive motor does not have a mechanical defect.
[0071] By determining the mechanical components corresponding to the mechanical defects of the disconnecting switch based on the correlation, real-time diagnosis of the mechanical defect status of the disconnecting switch can be achieved, and the specific location of the mechanical defect of the disconnecting switch can be further diagnosed in detail.
[0072] The method for diagnosing mechanical defects in disconnecting switches based on output power corrects the real-time motor output power and the real-time mechanical characteristic value according to the real-time environmental characteristic value, and then diagnoses the mechanical defect status of the disconnecting switch in real time based on the corrected real-time motor output power and the corrected real-time mechanical characteristic value. By taking into account the influence of environmental factors on the real-time motor output power and the real-time mechanical characteristic value, the accuracy of diagnosing the mechanical defect status of disconnecting switches can be improved.
[0073] In one embodiment, the specific method for correcting the real-time motor output power and the real-time mechanical characteristic value based on the real-time environmental characteristic value in step S4 includes the following steps:
[0074] S40. Based on the real-time environmental feature values, obtain the three-dimensional environmental feature curve function F(X,Y,Z) corresponding to the real-time environmental features.
[0075] Here, there are multiple real-time environmental feature values, and these multiple real-time environmental feature values correspond to different coordinate positions of the disconnecting switch. Specifically, the spatial data of the disconnecting switch is first processed in a three-dimensional spatial coordinate system to obtain the corresponding three-dimensional environmental coordinate space. Then, the real-time environmental feature values of different positions in the three-dimensional environmental coordinate space are obtained. Based on the real-time environmental feature values of different positions and the corresponding position coordinate values, the three-dimensional environmental feature curve function F(X,Y,Z) is obtained.
[0076] S41, obtain the position coordinates (X1,Y1,Z1) of the disconnector switch drive motor and the position coordinates (X2,Y2,Z2) of the disconnector switch transmission component.
[0077] The position coordinates (X1, Y1, Z1) of the drive motor can be the position coordinates of the drive motor's center of mass. The position coordinates (X2, Y2, Z2) of the disconnector's transmission components include, but are not limited to, the position coordinates of a component within the transmission components, such as the moving contact, the center of mass of the transmission rod, and the shaft. Since the specific selection of the drive motor's position coordinates (X1, Y1, Z1) and the disconnector's transmission component's position coordinates (X2, Y2, Z2) can be adjusted according to actual conditions, they will not be elaborated upon here.
[0078] S42, based on the three-dimensional feature curve function F(X,Y,Z), the position coordinates of the disconnector drive motor (X1,Y1,Z1), and the position coordinates of the disconnector transmission component (X2,Y2,Z2), obtain the first environmental feature value F(X1,Y1,Z1) corresponding to the position coordinates of the disconnector drive motor and the second environmental feature value F(X2,Y2,Z2) corresponding to the position coordinates of the disconnector transmission component.
[0079] Based on the three-dimensional feature curve function F(X,Y,Z), the position coordinates (X1,Y1,Z1) of the disconnector switch drive motor, and the position coordinates (X2,Y2,Z2) of the disconnector switch transmission component, the first environmental feature value F(X1,Y1,Z1) corresponding to the position coordinates of the disconnector switch drive motor and the second environmental feature value F(X2,Y2,Z2) corresponding to the position coordinates of the disconnector switch transmission component are obtained. Firstly, by installing sensor units around the disconnector switch or on the cabinet of the GIS equipment to collect real-time environmental feature values, it is possible to avoid installing sensor units on the drive motor and transmission component, which would affect the operation of the drive motor or transmission component. Secondly, more accurate first environmental feature values corresponding to the drive motor and second environmental feature values corresponding to the transmission component can be obtained based on the three-dimensional feature curve function.
[0080] S43, the real-time motor output power is corrected based on the first environmental characteristic value, and the real-time mechanical characteristic value is corrected based on the second environmental characteristic value.
[0081] Fluctuations in environmental characteristics can cause subtle changes in real-time motor output power and real-time mechanical characteristics. By correcting the real-time motor output power and real-time mechanical characteristics, the accuracy of diagnosing mechanical defects in disconnect switches can be improved.
[0082] In one embodiment, the specific method for correcting the real-time motor output power based on the first environmental characteristic value and correcting the real-time mechanical characteristic value based on the second environmental characteristic value in step S43 includes the following steps:
[0083] S430, Obtain the correction factor ε for the i-th first environmental feature value. 1.i and the i-th second environmental feature value ε 2.i .
[0084] Specifically, the correction factor ε for obtaining the i-th first environmental feature value is obtained. 1.i The specific method includes the following steps: obtaining the first environmental feature standard value δ corresponding to the i-th first environmental feature value. i '; According to the formula Obtain the correction factor ε for the i-th first environmental feature value 1.i .
[0085] Obtain the i-th second environmental feature value ε 2.i The specific method for the correction factor includes the following steps: obtaining the standard value δ of the second environmental feature corresponding to the i-th second environmental feature value. i According to the formula Obtain the correction factor ε for the i-th second environmental feature value 2.i .
[0086] Here, e represents the natural constant, λ i μ represents the first adjustment ratio coefficient corresponding to the i-th first environmental feature value. i This represents the second adjustment ratio coefficient corresponding to the i-th second environmental characteristic value. The first environmental characteristic standard value can be the standard environmental characteristic value of the drive motor, which can be set according to actual conditions, such as the environmental conditions of the disconnecting switch. The second environmental characteristic standard value can be the standard environmental characteristic value of the transmission components, which can be set according to actual conditions, such as the environmental conditions of the disconnecting switch.
[0087] The purpose of setting the first and second adjustment proportional coefficients is to take into account the different effects of different first environmental characteristic values on the real-time motor output power, and the different effects of different second environmental characteristic values on the real-time mechanical characteristic values. This is also to obtain the correction factor ε. 1.i and ε 2.i More accurate.
[0088] For technicians, both the first and second adjustment ratios can be obtained through a limited number of experiments, and will not be elaborated upon here. In some cases, after determining the first and second environmental characteristic standard values, these values can be further divided into intervals. Different first adjustment ratios are applied to the first environmental characteristic values in different intervals, and different second adjustment ratios are applied to the second environmental characteristic values in different intervals, thus further refining the correction factor ε. 1.i and ε 2.i This further improves the correction factor ε 1.i and ε 2.i The accuracy.
[0089] S431, according to formula Calculate the correction factor ε' for the real-time motor output power, and correct the real-time motor output power according to the correction factor ε'. The corrected real-time motor output power = real-time motor output power * ε'.
[0090] S431, according to formula Calculate the correction coefficient ε” of the real-time mechanical characteristic value, and correct the real-time mechanical characteristic value according to the correction coefficient ε”. The corrected real-time mechanical characteristic value = real-time mechanical characteristic value * ε”.
[0091] Where M represents the number of second environmental characteristic values and N represents the number of first environmental characteristic values.
[0092] According to the formula Calculate the correction coefficient ε' for the real-time motor output power and according to the formula By calculating the correction coefficient ε of the real-time mechanical characteristic value, a correction coefficient ε' and ε that are more in line with the actual situation can be obtained.
[0093] In one embodiment, a mechanical defect diagnosis system for disconnecting switches based on output power includes an acquisition module, a correction module, and a diagnosis module.
[0094] The acquisition module is used to acquire the real-time motor output power, real-time mechanical characteristic value, and real-time environmental characteristic value of the disconnecting switch.
[0095] The correction module is used to correct the real-time motor output power and the real-time mechanical characteristic value based on the real-time environmental characteristic value.
[0096] The diagnostic module is used to perform real-time diagnosis of the mechanical defect status of the disconnector switch based on the corrected real-time motor output power and the corrected real-time mechanical characteristic value.
[0097] Specifically, the diagnostic module includes a mechanical defect judgment unit, a correlation calculation unit, and a real-time diagnostic unit.
[0098] The mechanical defect judgment unit is used to determine whether there is a mechanical defect in the disconnector based on the corrected real-time motor output power and the corrected real-time mechanical characteristic value.
[0099] The correlation calculation unit is used to calculate the correlation between the corrected real-time motor output power and the corrected real-time mechanical characteristic value.
[0100] The real-time diagnostic unit is used to determine the mechanical component corresponding to the mechanical defect of the disconnecting switch based on the correlation degree, so as to realize the real-time diagnosis of the mechanical defect status of the disconnecting switch.
[0101] The disconnector switch mechanical defect diagnosis system based on output power corrects the real-time motor output power and the real-time mechanical characteristic value according to the real-time environmental characteristic value, and then performs real-time diagnosis of the disconnector switch mechanical defect status based on the corrected real-time motor output power and the corrected real-time mechanical characteristic value. By taking into account the influence of environmental factors on the real-time motor output power and the real-time mechanical characteristic value, the accuracy of disconnector switch mechanical defect status diagnosis can be improved.
[0102] In one embodiment, a computer-readable storage medium stores a computer program that, when executed by a processor, implements the aforementioned method for diagnosing mechanical defects in disconnecting switches based on output power.
[0103] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0104] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.
Claims
1. A method for diagnosing mechanical defects in disconnect switches based on output power, characterized in that, The method for diagnosing mechanical defects in disconnect switches based on output power includes the following steps: Obtain the real-time motor output power of the disconnector switch; Obtain the real-time mechanical characteristic values of the disconnecting switch; Obtain real-time environmental characteristic values of the disconnecting switch; The real-time motor output power and the real-time mechanical characteristic value are corrected based on the real-time environmental characteristic value; Based on the corrected real-time motor output power and the corrected real-time mechanical characteristic value, the mechanical defect status of the disconnecting switch is diagnosed in real time. The specific methods for real-time diagnosis of mechanical defects in disconnect switches include the following steps: Based on the corrected real-time motor output power and the corrected real-time mechanical characteristic value, it is determined whether the disconnecting switch has a mechanical defect; If the disconnecting switch has a mechanical defect, then calculate the correlation between the corrected real-time motor output power and the corrected real-time mechanical characteristic value; Based on the correlation, the mechanical components corresponding to the mechanical defects of the disconnecting switch are determined, thereby enabling real-time diagnosis of the mechanical defect status of the disconnecting switch. The specific method for correcting the real-time motor output power and the real-time mechanical characteristic value based on the real-time environmental characteristic value includes the following steps: Based on the real-time environmental feature values, obtain the three-dimensional environmental feature curve function corresponding to the real-time environmental features. ; Obtain the position coordinates of the disconnect switch drive motor and the position coordinates of the disconnector drive components ; Based on the three-dimensional feature curve function Position coordinates of the disconnect switch drive motor and the position coordinates of the disconnector drive components Obtain the first environmental feature value corresponding to the position coordinates of the disconnector switch drive motor. And the second environmental characteristic value corresponding to the position coordinates of the disconnector switch drive component. ; The real-time motor output power is corrected based on the first environmental characteristic value, and the real-time mechanical characteristic value is corrected based on the second environmental characteristic value.
2. The method for diagnosing mechanical defects in disconnect switches based on output power as described in claim 1, characterized in that, The specific methods for correcting the real-time motor output power based on the first environmental characteristic value and correcting the real-time mechanical characteristic value based on the second environmental characteristic value include the following steps: Get the Correction factor for each first environmental characteristic value and the A second environmental characteristic value ; According to the formula Calculate the correction coefficient for the real-time motor output power. And according to the correction factor The real-time motor output power is corrected; According to the formula Calculate the correction coefficient for the real-time mechanical characteristic value. And according to the correction factor The real-time mechanical characteristic values are corrected; in, This indicates the number of second environmental characteristic values. This indicates the number of the first environmental characteristic values.
3. The method for diagnosing mechanical defects in disconnect switches based on output power as described in claim 2, characterized in that, Get the Correction factor for each first environmental characteristic value The specific method includes the following steps: Get the The first environmental characteristic standard value corresponding to each first environmental characteristic value ; According to the formula Get the Correction factor for each first environmental characteristic value , Indicates the first The first adjustment ratio coefficient corresponding to the first environmental characteristic value.
4. The method for diagnosing mechanical defects in disconnect switches based on output power as described in claim 3, characterized in that, Get the A second environmental characteristic value The specific method for adjusting the correction factor includes the following steps: Get the The second environmental characteristic standard value corresponding to each second environmental characteristic value ; According to the formula Get the Correction factor for each second environmental characteristic value , Indicates the first The second adjustment ratio coefficient corresponding to the second environmental characteristic value.
5. A mechanical defect diagnosis system for disconnecting switches based on output power, characterized in that, The output power-based disconnector mechanical defect diagnosis system includes: The acquisition module is used to acquire the real-time motor output power, real-time mechanical characteristic value, and real-time environmental characteristic value of the disconnector switch; The correction module is used to correct the real-time motor output power and the real-time mechanical characteristic value based on the real-time environmental characteristic value; The diagnostic module is used to perform real-time diagnosis of the mechanical defect status of the disconnector switch based on the corrected real-time motor output power and the corrected real-time mechanical characteristic value. The diagnostic module includes: The mechanical defect judgment unit is used to determine whether the disconnecting switch has a mechanical defect based on the corrected real-time motor output power and the corrected real-time mechanical characteristic value. The correlation calculation unit is used to calculate the correlation between the corrected real-time motor output power and the corrected real-time mechanical characteristic value; The real-time diagnostic unit is used to determine the mechanical component corresponding to the mechanical defect of the disconnecting switch based on the correlation degree, so as to realize the real-time diagnosis of the mechanical defect status of the disconnecting switch. The specific method for correcting the real-time motor output power and the real-time mechanical characteristic value based on the real-time environmental characteristic value includes the following steps: Based on the real-time environmental feature values, obtain the three-dimensional environmental feature curve function corresponding to the real-time environmental features. ; Obtain the position coordinates of the disconnect switch drive motor and the position coordinates of the disconnector drive components ; Based on the three-dimensional feature curve function Position coordinates of the disconnect switch drive motor and the position coordinates of the disconnector drive components Obtain the first environmental feature value corresponding to the position coordinates of the disconnector switch drive motor. And the second environmental characteristic value corresponding to the position coordinates of the disconnector switch drive component. ; The real-time motor output power is corrected based on the first environmental characteristic value, and the real-time mechanical characteristic value is corrected based on the second environmental characteristic value.
6. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, implements the method for diagnosing mechanical defects of disconnecting switches based on output power as described in any one of claims 1-4.