CN114779073A - Stator core compression state fault detection device, detection method, generator set monitoring system and computer readable storage medium - Google Patents
Stator core compression state fault detection device, detection method, generator set monitoring system and computer readable storage medium Download PDFInfo
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- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
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- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
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Abstract
The embodiment of the application provides a stator core compression state fault detection device, a detection method, a generator set monitoring system and a computer readable storage medium, relates to the technical field of generator operation online monitoring, and comprises the following steps: taking the measuring points with abnormal information in the measuring point group as the suspected measuring points, and judging whether abnormal information exists in the conditions of the measuring points adjacent to the suspected measuring points or not; if the adjacent measuring points of the suspected measuring points have no abnormal information, judging that the penetrating screw at the suspected measuring points is abnormal; and if the adjacent measuring points of the suspected measuring points have abnormal information, judging that the penetrating screw in the common monitoring area of the suspected measuring points and the adjacent measuring points of the suspected measuring points is abnormal. The stator core compression state fault detection method provided by the embodiment can further position the abnormal through screw to obtain more accurate information, and meanwhile, can perform auxiliary verification on the monitoring assembly, so that the inaccuracy of monitoring information caused by the abnormality of the monitoring assembly is avoided.
Description
Technical Field
The application relates to the technical field of on-line monitoring of generator operation, in particular to a stator core compression state fault detection device, a detection method, a generator set monitoring system and a computer readable storage medium.
Background
When the generator operates, the stator core is subjected to the comprehensive action of mechanical force, thermal stress and electromagnetic force. Under the condition of long-term operation, the pressing force of the stator core can be gradually reduced under the combined action of multiple factors, and if the stator core cannot be monitored and effectively early-warned and controlled in time, the stator core becomes loose, so that the generator set vibrates and generates noise, even accidents such as tooth breakage of a punching sheet, burning loss, bar breaking and the like are caused, the generator set is abnormally shut down, and huge economic loss is generated.
At the present stage, the method for monitoring and overhauling the compression state of the stator core of the generator mainly comprises two methods:
1. the hidden trouble of stator core looseness is manually eliminated by means of periodic maintenance of a power plant. On one hand, the method has no pertinence and low working efficiency; on the other hand, the stator core compression state cannot be known in real time and early warning cannot be given.
2. The method is limited by narrow installation space on one hand, so that the installation is inconvenient; on the other hand, in the monitoring mode, the monitoring sheets are required to be mutually attached, an annular detection group is formed by taking the iron core axis as the center, and a plurality of layers are arranged along the axial direction of the stator iron core, so that the system is complex. In addition, the monitoring mode is also not targeted to the problem, because the stator core looseness is mainly firstly generated on the side section tooth part of the stator core.
Disclosure of Invention
The embodiment of the application provides a stator core compression state fault detection device, a detection method, a generator set monitoring system and a computer-readable storage medium, which can acquire more accurate positioning information of a through screw with an abnormal state, and further improve later-stage maintenance efficiency.
In one aspect, the present embodiment provides a method for detecting a stator core compression state fault, including the following steps: taking the measuring points with abnormal information in the measuring point group as suspected measuring points, and judging whether the conditions of the adjacent measuring points of the suspected measuring points have abnormal information or not; if the adjacent measuring points of the suspected measuring points have no abnormal information, judging that the penetrating screw at the suspected measuring points is abnormal; if the adjacent measuring points of the suspected measuring points have abnormal information, judging that the penetrating screw in a common monitoring area of the suspected measuring points and the adjacent measuring points of the suspected measuring points is abnormal; the measuring point group comprises a plurality of measuring points which are respectively arranged at different penetrating screws, each measuring point is configured to measure the axial force of a plurality of penetrating screws, and the distance between every two adjacent measuring points is irrelevant closest distance.
In some embodiments, after the abnormality of the feed-through screw in the common monitoring area of the suspected measuring point and the adjacent measuring point of the suspected measuring point is determined, the method further comprises the following steps: acquiring the percentage t1 of the axial force change of the feed-through screw at the suspected test point; acquiring the percentage t2 of the axial force change of the through screw at the adjacent measuring point of the suspected measuring point; and determining the area where the abnormal penetrating screw is located according to t1 and t 2.
In some of these embodiments, determining the region in which the abnormal through-center screw is located according to t1 and t2 includes: the distance ratio of the abnormal penetrating screw to the suspected measuring point and the adjacent measuring point of the suspected measuring point is t2/t 1. c%, wherein c% is a corrected value.
In some of these embodiments, the method further comprises the steps of: defining the area where the abnormal piercing screw is located as the area where the theoretical abnormal piercing screw is located; judging whether a piercing screw rod actually exists in an area where the theoretical abnormal piercing screw rod is located; and when the number of the actual penetrating screws in the area where the theoretical abnormal penetrating screws are located is 0, judging that at least two abnormal penetrating screws exist in a common monitoring area of the suspected measuring point and the adjacent measuring point of the suspected measuring point.
In some embodiments, when the distance between the actual penetrating screw and the range of the theoretical abnormal penetrating screw is less than or equal to L, the actual penetrating screw is still determined to be located in the area where the theoretical abnormal penetrating screw is located.
In some of these embodiments, the method further comprises the steps of: selecting a group of measuring points with the farthest distance from adjacent measuring points in at least two measuring point groups as a normal detection group; when the normal detection group detects abnormal information of the suspected measuring point and judges that the through screw with the abnormality is positioned in a common monitoring area of the suspected measuring point and a measuring point adjacent to the suspected measuring point, starting other groups of measuring points which are relatively normal and have a short distance between the adjacent measuring points; and at least one measuring point in the other enabled groups of measuring points is positioned in a common monitoring area of the suspected measuring point and the measuring point adjacent to the suspected measuring point.
In some embodiments, the penetrating screw at any position is provided with at most one measuring point.
In another aspect, the present embodiment provides a stator core pressing state fault detection apparatus, including: a determination module configured to perform the following operations: taking the measuring points with abnormal information in the measuring point group as suspected measuring points, and judging whether the conditions of the adjacent measuring points of the suspected measuring points have abnormal information or not; if the adjacent measuring points of the suspected measuring points have no abnormal information, judging that the penetrating screw at the suspected measuring points is abnormal; and if the adjacent measuring points of the suspected measuring points have abnormal information, judging that the penetrating screw in a common monitoring area of the suspected measuring points and the adjacent measuring points of the suspected measuring points is abnormal.
The present embodiment further provides a generator set monitoring system, which includes a memory and a processor, where the memory stores a computer program, and the computer program is executed by the processor to implement the stator core compression state fault detection method according to any one of the above embodiments.
The present embodiment also provides a computer-readable storage medium having stored thereon a computer program to be loaded by a processor to execute the stator core compression state fault detection method of any one of the above-described embodiments.
Has the advantages that:
(1) according to the stator core compression state fault detection method provided by the embodiment, the through screw position with abnormality is further searched, the through screw with abnormality can be further positioned, more accurate information can be obtained, meanwhile, the monitoring assembly can be subjected to auxiliary verification, and the inaccuracy of monitoring information caused by the abnormality of the monitoring assembly is avoided.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a flow chart of a stator core compression state fault detection method provided by some embodiments of the present application;
fig. 2 is a partial flowchart of a stator core compression state fault detection method according to some embodiments of the present disclosure.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be considered as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
"A and/or B" includes the following three combinations: a alone, B alone, and a combination of A and B.
The use of "adapted to" or "configured to" in this application means open and inclusive language that does not exclude devices adapted to or configured to perform additional tasks or steps. Additionally, the use of "based on" means open and inclusive, as a process, step, calculation, or other action that is "based on" one or more stated conditions or values may in practice be based on additional conditions or values beyond those stated.
In this application, the word "exemplary" is used to mean "serving as an example, instance, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. The following description is presented to enable any person skilled in the art to make and use the application. In the following description, details are set forth for the purpose of explanation. It will be apparent to one of ordinary skill in the art that the present application may be practiced without these specific details. In other instances, well-known structures and processes are not set forth in detail in order to avoid obscuring the description of the present application with unnecessary detail. Thus, the present application is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed herein.
In one aspect, the present embodiment provides a method for detecting a stator core compression state fault, as shown in fig. 1 and fig. 2, including the following steps:
s10: acquiring a suspected measuring point; s20: judging whether the conditions of adjacent measuring points of the suspected measuring points have abnormal information or not; s30: if the adjacent measuring points of the suspected measuring points have no abnormal information, judging that the penetrating screw at the suspected measuring points is abnormal; s40: if the adjacent measuring points of the suspected measuring points have abnormal information, judging that the through screw in a common monitoring area of the suspected measuring points and the adjacent measuring points of the suspected measuring points is abnormal; the measuring point group comprises a plurality of measuring points which are respectively arranged at different penetrating screws, each measuring point is configured to measure the axial force of a plurality of penetrating screws, and the distance between every two adjacent measuring points is irrelevant closest distance.
In the above embodiment, in S10, the measurement point having abnormal information in the measurement point group is taken as a suspected measurement point, which may be any measurement point or multiple measurement points in all the measurement points arranged, and the system monitors multiple measurement points in the measurement point group at the same time to realize monitoring of the compression state of the entire stator core; the adjacent measuring points of the suspected measuring points refer to one or more measuring points which are closest to the suspected measuring points in multiple directions along the surface of the stator core. In S30, if there is no abnormality information about the neighboring points of the suspected test points, that is, there is no abnormality information about one or more neighboring points of the suspected test points, it indicates that the abnormal penetrating screw does not exist in the monitoring area of the neighboring points of the suspected test points, and the result of the determination is that the abnormal penetrating screw exists at the suspected test points. In S40, abnormal information exists in the adjacent measuring points of the suspected measuring points, and the number of the adjacent measuring points of the suspected measuring points is at least one; when the number of the adjacent measuring points of the suspected measuring points is one, the through screw with the abnormality can be judged to be positioned in a common monitoring area of the suspected measuring points and the adjacent measuring points of the suspected measuring points; when a plurality of abnormal measuring points exist in the adjacent measuring points of the suspected measuring points, the through screw which has the abnormality can be judged to be positioned in the suspected measuring points and a common monitoring area of the adjacent measuring points of the plurality of suspected measuring points. The measuring point group comprises measuring points for acquiring axial force of a plurality of penetrating screws, wherein the axial force detection site of one penetrating screw is one measuring point, an axial force detection assembly is arranged at each measuring point and used for acquiring the axial force corresponding to the penetrating screw, and each measuring point group comprises a plurality of measuring points; when the measuring points are arranged, any two adjacent measuring points in the measuring point group are not related, namely when the penetrating screw rod corresponding to one measuring point is loosened, the axial force of the penetrating screw rod corresponding to the adjacent measuring points cannot be changed. Each measuring point on the stator core can monitor the loosening condition of all the stator cores in a circular range formed by taking the measuring point as the center of a circle and taking the diameter as a certain distance. The distance between adjacent measuring points is irrelevant nearest distance, and if the distance between one of the penetrating screws and the measuring point is smaller than the irrelevant nearest distance, the penetrating screw is relevant to the penetrating screw at the measuring point, the penetrating screw is loosened, and the penetrating screw of the measuring point, which is smaller than the irrelevant nearest distance, of the penetrating screw is influenced and then detected by the axial force detection assembly. Arrangement of the measurement point groups as described above, in different examples, a plurality of measurement point groups each including a plurality of measurement points may be provided in accordance with the arrangement.
According to the embodiment, when the stator core is loosened, the position area where the loosened penetrating screw rod is located can be obtained more accurately, so that corresponding preventive measures can be effectively taken, an abnormal source can be found more quickly, and the equipment maintenance efficiency is improved.
In some embodiments, after the abnormality of the feed-through screw in the common monitoring area of the suspected measuring point and the measuring point adjacent to the suspected measuring point is determined, the method further comprises the following steps:
s50: acquiring the percentage of the axial force change quantity of the through screw at the suspected test point, and defining the percentage as t 1; s60: acquiring the percentage of the axial force change quantity of the through screw rod at the adjacent measuring point of the suspected measuring point, and defining the percentage as t 2; s70: and determining the area where the abnormal penetrating screw is located according to t1 and t 2.
In some embodiments, the specific determination method of S70 includes the following steps:
under the stable working condition, the distance ratio of the abnormal penetrating screw to the suspected measuring point and the adjacent measuring point of the suspected measuring point is t2/t1 c%, wherein c% is a corrected value.
Under an unstable working condition, the distance ratio of the abnormal feed-through screw to the suspected measuring point and the adjacent measuring point of the suspected measuring point may have a nonlinear one-to-one correspondence relationship, the one-to-one correspondence relationship is obtained through a preliminary experiment, a relevant model is established according to the correspondence relationship, and under the corresponding unstable working condition, the distance ratio of the normal feed-through screw to the suspected measuring point and the adjacent measuring point of the suspected measuring point is obtained according to the obtained t1 and t2 values and the selected corresponding corrected values.
When one suspected measuring point with abnormal information is detected, the adjacent measuring point of the suspected measuring point is defined as a second measuring point, the percentage of the change amount of the axial force of the penetrating screw at the suspected measuring point is t1, the percentage of the change amount of the axial force of the penetrating screw at the second measuring point is t2, and at the moment, t2/t1 · c% is the ratio of the distance between the penetrating screw with the abnormality and the suspected measuring point to the distance between the penetrating screw with the abnormality and the second measuring point. Assuming that t1 is 30% and t2 is 10%, the ratio of the distance between the crossing screw with the abnormality and the second measuring point is 1:3, and the crossing screw with the abnormality is located on or near a line which is a quartering point of the formed line segment and is perpendicular to the formed line segment. c% is a correction value, in actual measurement, according to different working conditions and use conditions of the generator set, a certain deviation exists in a structure obtained through specific measurement, for example, a certain deviation exists between a value of an abnormal penetrating screw and a value of a theoretical measuring point, and the correction value is introduced for correction to obtain a more accurate result; it should be noted that the specific value of c% is not necessarily the same at different times.
In other examples, when the number of the adjacent measuring points of the suspected measuring points with abnormal information is two or more, the distance ratio of the suspected measuring points to the adjacent measuring points of each suspected measuring point is respectively obtained, and finally, the more accurate area where the penetrating screw rod with the abnormal information is located is obtained through multiple groups of data.
In some embodiments, after the distance ratio between the abnormal feed-through screw and the suspected measuring point and the distance between the abnormal feed-through screw and the adjacent measuring point of the suspected measuring point is obtained, the method further comprises the following steps:
s80: obtaining an area where a theoretical abnormal penetrating screw rod is located according to the distance ratio of the abnormal penetrating screw rod to the suspected measuring point and the distance ratio of the adjacent measuring points of the suspected measuring point; s90: judging whether a cross-core screw rod actually exists in an area where the theoretical abnormal cross-core screw rod is located; s100: and when the number of the actual penetrating screws in the area where the theoretical abnormal penetrating screws are located is 0, judging that at least two abnormal penetrating screws exist in a common monitoring area of the suspected measuring point and the adjacent measuring point of the suspected measuring point.
In the above embodiment, the area where the theoretical abnormal penetrating screw is located is obtained through the above embodiment, and there is no penetrating screw in the area, which may be the case where multiple penetrating screws are abnormal in the common monitoring area of the suspected measuring point and the adjacent measuring point of the suspected measuring point. And sending the judgment result to the system, and continuing to perform the next judgment. Because the corrected value c% exists, the positions of the area where the theoretical abnormal penetrating screw is located and the penetrating screw near the area can be corrected, so that in the same period, through the fact that the penetrating screw does not exist in the area where the theoretical abnormal penetrating screw is located after correction, the fact that a plurality of penetrating screw abnormalities exist in the common monitoring area of the suspected measuring point and the measuring point adjacent to the suspected measuring point can be obtained. In other examples, in order to ensure safety, the condition that a plurality of penetrating screws are abnormal in a common monitoring area of a suspected measuring point and a measuring point adjacent to the suspected measuring point is judged, and the correction value can be detected by adopting c% as 1 so as to avoid the condition that the adopted correction value is not updated and detection omission occurs.
In some embodiments, when the distance between the actual penetrating screw and the range of the theoretical abnormal penetrating screw is less than or equal to L, the actual penetrating screw is still determined to be located in the area where the theoretical abnormal penetrating screw is located. In this embodiment, a preset value L is continuously set to perform position correction, the range of L is relatively expanded to obtain the positions of a plurality of actual through screws, and the through screws are all used as suspected abnormal values to be sent to a system, so that omission is avoided, and the equipment can be maintained more accurately.
In some embodiments, arranging the plurality of measuring points along the feed-through screw specifically comprises the following steps:
a set of stations is provided and used to perform the steps of any of the embodiments described above.
In some other embodiments, the stator core compression state fault detection method further comprises the steps of:
arranging at least two groups of measuring points; selecting a group of measuring points with the farthest distance between adjacent measuring points as a normal detection group; when one measuring point in the normal detection group detects abnormality and the through screw with the abnormality is judged to be positioned in a common monitoring area of the suspected measuring point and the adjacent measuring point of the suspected measuring point, the other groups of measuring points which are relatively normal to the normal detection group and are close to the adjacent measuring point are started for detection so as to realize more accurate position judgment, and secondary verification of the abnormal through screw can be realized to obtain more accurate information; and at least one measuring point in the other enabled groups of measuring points is positioned in a common monitoring area of the suspected measuring point and the measuring point adjacent to the suspected measuring point.
When the normal detection group detects that abnormal penetrating screw information exists in a common monitoring area between the suspected measuring point and a measuring point adjacent to the suspected measuring point, and when the second group of measuring points does not detect that the abnormal penetrating screw information exists, the fact that the detection abnormality exists in the suspected normal group measuring point is obtained. In the operation process of the equipment, the measuring point itself is abnormal, and the specific detection condition of the axial force of the penetrating screw at the measuring point position cannot be accurately reflected, so that whether a sensor for detecting the axial force of the penetrating screw has a problem needs to be considered.
In some embodiments, the enabled other set of test points includes at least two test points located in a common monitoring area between a suspected test point and a test point adjacent to the suspected test point in the normal test set. And when the normal detection group detects that the abnormal penetrating screw is positioned in the common monitoring area of the suspected measuring point and the adjacent measuring point of the suspected measuring point, starting the second group of measuring points, adopting the same detection method as the normal detection group for detecting again to obtain more accurate position information of the abnormal penetrating screw and assisting in verifying that the measuring point of the normal detection group is abnormal.
In some embodiments, the penetrating screw at any position is provided with at most one measuring point. In the embodiment, when the initial position screw rod is arranged to adjust different loosening grades to obtain a plurality of groups of measuring points, more than one measuring point is not arranged on one penetrating screw rod, so that the loosening condition of the stator core can be better detected, and more comprehensive monitoring performance is realized.
In some embodiments, the initial position screw pre-tightening force is changed by adjusting to different loosening levels, wherein the loosening levels comprise: first grade, [ 85%, 100% of the feed-through screw 10 load ]; second grade, [ 70%, 85% of the feed-through screw 10 load; third grade, [ 60%, 70% of the feed-through screw 10 load; fourth grade, [ 10%, 60% of the feed-through screw 10 load); fifth grade, [0, 10% of the feed-through screw 10 load. According to different loosening grades, the pre-tightening force of the initial position screw rod is selectively adjusted, so that the debugging efficiency of the pre-tightening force is guaranteed. Under the actual use condition, the number of groups of measuring points can be selectively set according to different detection requirements of the generator set, when the detection requirement is relatively low, fewer groups of measuring points can be adopted, and only one group can be used at least; when the detection requirement is relatively high, a plurality of groups of measuring points can be arranged according to the actual situation.
In another aspect, the present embodiment further provides a stator core pressing state fault detection apparatus, where the determination module is configured to perform the following operations: taking the measuring points with abnormal information in the measuring point group as suspected measuring points, and judging whether the conditions of the adjacent measuring points of the suspected measuring points have abnormal information or not; if the adjacent measuring points of the suspected measuring points have no abnormal information, judging that the penetrating screw at the suspected measuring points is abnormal; and if the adjacent measuring points of the suspected measuring points have abnormal information, judging that the penetrating screw in a common monitoring area of the suspected measuring points and the adjacent measuring points of the suspected measuring points is abnormal.
The embodiment also provides a generator set monitoring system, which includes a memory and a processor, where the memory stores a computer program, and the computer program is executed by the processor to implement the stator core compression state fault detection method in any one of the above embodiments.
In some embodiments, the genset monitoring system may be applied to a hydro-turbo genset.
The present embodiment also provides a computer-readable storage medium having a computer program stored thereon, the computer program being loaded by a processor to perform the stator core compression state fault detection method according to any one of the above embodiments.
The stator core compression state fault detection device, the stator core compression state fault detection method, the generator set monitoring system and the computer-readable storage medium provided by the embodiment of the present application are introduced in detail, specific examples are applied in the present application to explain the principle and the implementation of the present application, and the description of the above embodiments is only used to help understand the method and the core idea of the present application; meanwhile, for those skilled in the art, according to the idea of the present application, the specific implementation manner and the application scope may be changed, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (10)
1. A stator core compression state fault detection method is characterized by comprising the following steps:
taking the measuring points with abnormal information in the measuring point group as suspected measuring points, and judging whether the conditions of the adjacent measuring points of the suspected measuring points have abnormal information or not;
if the adjacent measuring points of the suspected measuring points have no abnormal information, judging that the penetrating screw at the suspected measuring points is abnormal;
if the adjacent measuring points of the suspected measuring points have abnormal information, judging that the through screw in a common monitoring area of the suspected measuring points and the adjacent measuring points of the suspected measuring points is abnormal;
the measuring point group comprises a plurality of measuring points which are respectively arranged at different penetrating screws, each measuring point is configured to measure the axial force of a plurality of penetrating screws, and the distance between adjacent measuring points is irrelevant closest distance.
2. The stator core pressing state fault detection method according to claim 1,
after the abnormality of the penetrating screw in the common monitoring area of the suspected measuring point and the adjacent measuring point of the suspected measuring point is judged, the method further comprises the following steps:
acquiring the percentage t1 of the axial force change amount of the feed-through screw at the suspected test point;
acquiring the percentage t2 of the axial force change quantity of the penetrating screw at the adjacent measuring point of the suspected measuring point;
and determining the area where the abnormal penetrating screw is located according to t1 and t 2.
3. The method for detecting the fault of the compression state of the stator core as claimed in claim 2, wherein the determining the region where the abnormal through-screw is located according to t1 and t2 comprises:
the distance ratio of the abnormal penetrating screw to the suspected measuring point and the adjacent measuring point of the suspected measuring point is t2/t1 c%, wherein c% is a corrected value.
4. A stator core compression state fault detection method according to claim 2 or 3, further comprising the steps of:
defining the area where the abnormal penetrating screw rod is located as the area where the theoretical abnormal penetrating screw rod is located;
judging whether the piercing screw rod actually exists in the area where the theoretical abnormal piercing screw rod is located;
and when the actual number of the penetrating screws in the area where the theoretical abnormal penetrating screws are located is 0, judging that at least two abnormal penetrating screws exist in a common monitoring area of the suspected measuring point and the adjacent measuring point of the suspected measuring point.
5. The method for detecting the stator core compression state fault according to claim 4, wherein when the distance from the actual piercing screw to the range of the theoretical abnormal piercing screw is less than or equal to L, it is still determined that the actual piercing screw is located in the area where the theoretical abnormal piercing screw is located.
6. The method of detecting a stator core compression state fault according to claim 1, further comprising the steps of:
selecting a group of measuring points with the farthest distance from the adjacent measuring points in at least two measuring point groups as a normal detection group;
when the normal detection group detects abnormal information of the suspected measuring point and judges that the through screw with the abnormality is positioned in a common monitoring area of the suspected measuring point and a measuring point adjacent to the suspected measuring point, starting other measuring points of the group which are close to the normal detection group in distance from the adjacent measuring point; and at least one measuring point in the other started groups of measuring points is positioned in a common monitoring area of the suspected measuring point and the measuring point adjacent to the suspected measuring point.
7. The method as recited in claim 6, wherein a maximum of one measuring point is provided at any position of the feed-through screw.
8. A stator core compression state fault detection device, comprising:
a determination module configured to perform the following operations:
taking a measuring point with abnormal information in the measuring point group as a suspected measuring point, and judging whether abnormal information exists in the conditions of adjacent measuring points of the suspected measuring point or not;
if the adjacent measuring points of the suspected measuring points have no abnormal information, judging that the penetrating screw at the suspected measuring points is abnormal;
and if the abnormal information exists in the adjacent measuring points of the suspected measuring point, judging that the penetrating screw in a common monitoring area of the suspected measuring point and the adjacent measuring points of the suspected measuring point is abnormal.
9. A genset monitoring system characterized by a data acquisition module, a memory and a processor, the memory storing a computer program that when executed by the processor implements the stator core compression state fault detection method of any one of claims 1-7.
10. A computer-readable storage medium, characterized in that a computer program is stored thereon, which computer program is loaded by a processor to carry out the stator core compression state fault detection method as claimed in any one of claims 1-7.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210343387.5A CN114779073B (en) | 2022-03-31 | 2022-03-31 | Stator core compression state fault detection device, detection method, generator set monitoring system and computer readable storage medium |
| PCT/CN2023/081008 WO2023185429A1 (en) | 2022-03-31 | 2023-03-13 | Stator core pressing state fault detection method and apparatus, generator set monitoring system and computer-readable storage medium |
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| CN202210343387.5A CN114779073B (en) | 2022-03-31 | 2022-03-31 | Stator core compression state fault detection device, detection method, generator set monitoring system and computer readable storage medium |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023185429A1 (en) * | 2022-03-31 | 2023-10-05 | 东方电气集团东方电机有限公司 | Stator core pressing state fault detection method and apparatus, generator set monitoring system and computer-readable storage medium |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2023185429A1 (en) | 2023-10-05 |
| CN114779073B (en) | 2023-10-13 |
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