CN112363100A - Fault detection device for state monitoring sensor - Google Patents
Fault detection device for state monitoring sensor Download PDFInfo
- Publication number
- CN112363100A CN112363100A CN202011255947.9A CN202011255947A CN112363100A CN 112363100 A CN112363100 A CN 112363100A CN 202011255947 A CN202011255947 A CN 202011255947A CN 112363100 A CN112363100 A CN 112363100A
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- partial discharge
- detection device
- sensor
- fault detection
- monitoring sensor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
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- G—PHYSICS
- 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
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
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- General Physics & Mathematics (AREA)
- Testing Relating To Insulation (AREA)
Abstract
The invention provides a state monitoring sensor fault detection device which can complete the charged detection of capacitive equipment state monitoring sensor faults, improve the running stability of an online monitoring device, reduce the waste of manpower and material resources caused by low on-site maintenance efficiency due to no effective detection means, and improve the working efficiency and the working quality. Therefore, the supervision level of the insulation technology of the power grid equipment is effectively enhanced through field improvement, and the power supply reliability of the power grid is improved.
Description
Technical Field
The invention relates to the technical field of substation equipment, in particular to a fault detection device of a state monitoring sensor.
Background
At present, various online monitoring devices are installed and operated in substations of kilovolt and above, wherein, the number of capacitive equipment online monitoring sensor terminals is about seven thousands. According to statistics, although testers need to carry out maintenance patrol on online monitoring devices of content equipment of the transformer substation every year, reliability detection of the sensors cannot be carried out all the time due to the fact that technical conditions do not exist, and the fault rate of the state monitoring sensors directly influences the accuracy and reliability of evaluation of operation and maintenance personnel on the running state of the equipment. Therefore, fault detection and troubleshooting of the capacitive equipment state monitoring sensor are effective ways for improving reliability of state monitoring measurement data, and therefore effectiveness of state monitoring on state evaluation of the main equipment is improved.
Disclosure of Invention
This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. In this section, as well as in the abstract and the title of the invention of this application, simplifications or omissions may be made to avoid obscuring the purpose of the section, the abstract and the title, and such simplifications or omissions are not intended to limit the scope of the invention.
Therefore, the technical problem to be solved by the present invention is to overcome the defect that the capacitive device monitoring sensor in the prior art cannot detect, so as to provide a fault detection device for a state monitoring sensor.
In order to solve the technical problems, the invention provides the following technical scheme: a failure detection device for a condition monitoring sensor comprises,
the partial discharge sensor is arranged on the capacitive equipment and used for detecting the state of the capacitive equipment;
the fault detection module is connected with the partial discharge sensor through a secondary side circuit and used for monitoring the working state of the partial discharge sensor;
and the mounting assembly is arranged on the outer side of the partial discharge sensor and has a fixed state for fixing the partial discharge sensor.
As a preferable aspect of the state monitoring sensor failure detection device of the present invention, wherein: the fault detection module comprises a processing module, a power supply module, an input module, an output module and a display module, wherein the input module is connected with the partial discharge sensor through the secondary side circuit.
As a preferable aspect of the state monitoring sensor failure detection device of the present invention, wherein: the fault detection module inputs a power frequency current signal to the partial discharge sensor and receives a return signal of the partial discharge sensor through a secondary side circuit.
As a preferable aspect of the state monitoring sensor failure detection device of the present invention, wherein: the mounting assembly comprises
The mounting base is arranged on one side of the partial discharge sensor and comprises a mounting groove for mounting the sensor,
a movable cover plate which is rotatably arranged on one side of the mounting base through a hinge shaft,
the control rod is arranged on the movable cover plate, and comprises a triggering end contacted with the movable cover plate and a locking end connected with the mounting base in a detachable mode.
As a preferable aspect of the state monitoring sensor failure detection device of the present invention, wherein: be equipped with the card foot in the mounting groove, the sensor joint is put in the office is in the card foot.
As a preferable aspect of the state monitoring sensor failure detection device of the present invention, wherein: and a crimping plate is arranged in the movable cover plate, and when the movable cover plate is buckled on the mounting base, the crimping plate is contacted with the partial discharge sensor.
As a preferable aspect of the state monitoring sensor failure detection device of the present invention, wherein: the card foot with the crimping board all is equipped with to the location portion that the sensor lateral wall extends is put in the office, and works as removable cover lock is in when the mounting base is last, the crimping board with the location portion of card foot is crisscross.
As a preferable aspect of the state monitoring sensor failure detection device of the present invention, wherein: the removable cover connects be equipped with on one side of mounting base and be suitable for and hold the storage tank of trigger end, trigger the end with the locking end is connected perpendicularly, trigger and serve and be equipped with torsion portion, torsion portion locates in the storage tank.
As a preferable aspect of the state monitoring sensor failure detection device of the present invention, wherein: the torsion part is followed trigger end bending bulge, just removable cover lock is in the mounting base in-process, the torsion part is relative trigger end rotates.
As a preferable aspect of the state monitoring sensor failure detection device of the present invention, wherein: still be equipped with the locking groove on the mounting base, the removable cover lock is in when on the mounting base, the locking end gets into the locking groove.
The invention has the beneficial effects that: the state monitoring sensor fault detection device provided by the invention can complete the charged detection of the capacitive equipment state monitoring sensor fault, improve the operation stability of the online monitoring device, reduce the waste of manpower and material resources caused by low on-site maintenance inspection efficiency due to no effective detection means, and improve the working efficiency and the working quality. Therefore, the supervision level of the insulation technology of the power grid equipment is effectively enhanced through field improvement, and the power supply reliability of the power grid is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise. Wherein:
FIG. 1 is a schematic diagram of a connection relationship of a failure detection device of a condition monitoring sensor;
FIG. 2 is a schematic structural view of the mounting assembly;
FIG. 3 is a schematic view of a mounting base structure;
FIG. 4 is a schematic view of a removable cover;
FIG. 5 is a schematic view of a control lever;
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
Example 1
The present embodiment provides a failure detection device for a condition monitoring sensor, in which the connection relationship of the components is as shown in fig. 1, and the device comprises a partial discharge sensor 100, a failure detection module 200 and a mounting assembly 300.
The partial discharge sensor 100 is arranged on the capacitive equipment and used for detecting the state of the capacitive equipment; a fault detection module 200, connected to the partial discharge sensor 100 through a secondary side circuit 110, for monitoring a working state of the partial discharge sensor 100; and a mounting member 300 provided outside the partial discharge sensor 100 and having a fixed state in which the partial discharge sensor 100 is fixed.
The fault detection module 200 includes a processing module 210, a power supply module 220, an input module 230, an output module 240, and a display module 250, where the input module 230 is connected to the partial discharge sensor 100 through the secondary-side circuit 110.
The fault detection module 200 inputs a power frequency current signal to the partial discharge sensor 100, and receives a return signal of the partial discharge sensor 100 through the secondary side circuit 110.
Specifically, the device for outputting the standard power frequency current signal is designed to adopt 220V alternating current power supply to output an alternating current signal, and the output current is in the range of 0-1A. The display module 250 is a Liquid Crystal Display (LCD) screen, and displays three input/output signal waveforms.
Output current signal gear: the range of 0-1 mA and the range of 1 mA-1A;
input signal (on-line device sensor secondary side analog signal) gear: the range of 0 to 1 mA;
| fault detector parameters | Measuring range | Accuracy of | Resolution ratio |
| Output current signal | 0～1000uA | -1％～+1％ | 1uA |
| Output current signal | 1mA～1000mA | -1％～+1％ | 1mA |
| Input signal | 0～1000uA | -1％～+1％ | 1uA |
And the signals acquired by the sensor are subjected to signal filtering and amplification display processing, so that the output signals and the input signals are displayed, compared and analyzed in the same oscillogram. And comparing the output signal with the input signal to calculate parameters such as amplitude comparison, waveform distortion rate, phase difference and the like.
And a detection auxiliary test loop is designed, so that the standard current signals can be injected into the three hollow-core sensors through threading at the same time. The amplitude of the output signal of the device can be adjusted to 0-10V, and the frequency of the output signal can be adjusted to 0-1000 Hz, so that power frequency and harmonic signal output is realized.
As shown in fig. 3, the mounting assembly 300 in this embodiment includes a mounting base 310, a movable cover 320 and a control rod 330, wherein the mounting base 310 is disposed on one side of the partial discharge sensor 100 and includes a mounting groove 311 for mounting the sensor. The movable cover 320 is rotatably disposed at one side of the mounting base 310 through a hinge shaft, and the movable cover 320 can rotate around one side of the mounting base 310 to complete the fastening and opening of the mounting base 310. The control rod 330 is disposed on the movable cover 320 for controlling the movement of the movable cover 320, and includes an activation end 331 contacting the movable cover 320 and a locking end 332 detachably connected to the mounting base 310.
When the locking end 332 of the control rod 330 is pulled, the triggering end 331 rotates along with the control rod, and the movable cover 320 is driven to rotate, thereby completing the fastening.
As shown in fig. 3, a locking pin 312 is disposed in the mounting groove 311, and the partial discharge sensor 100 is locked in the locking pin 312. The partial discharge sensor 100 in this embodiment is annular, and the locking pins 312 are distributed along the annular shape and have a certain elasticity, so as to lock the partial discharge sensor 100 inside.
The movable cover plate 320 is internally provided with a press-connection plate 321, when the movable cover plate 320 is buckled on the mounting base 310, the press-connection plate 321 is in contact with the partial discharge sensor 100, and the press-connection plate 321 and the clamping feet 312 which are distributed up and down clamp the partial discharge sensor 100 in the middle, so that the fixation of the partial discharge sensor 100 is completed.
In order to further increase the stability, the clamping leg 312 and the pressing plate 321 are both provided with a positioning portion 323 extending towards the side wall of the partial discharge sensor 100, and when the movable cover plate 320 is fastened on the mounting base 310, the pressing plate 321 and the positioning portion 323 of the clamping leg 312 are staggered. Wherein the positioning portions 323 on the crimping plate 321 also exhibit an annular distribution.
As shown in fig. 4, a containing groove 322 adapted to contain the trigger end 331 is disposed on one side of the movable cover plate 320 connected to the mounting base 310, the trigger end 331 is vertically connected to the locking end 332, a torsion portion 333 is disposed on the trigger end 331, and the torsion portion 333 is disposed in the containing groove 322.
As shown in fig. 5, the triggering end 331 and the locking end 332 are both elongated metal rods, and the torsion portion 333 is bent and raised from the triggering end 331, and the torsion portion 333 rotates relative to the triggering end 331 during the process of snapping the movable cover 320 on the mounting base 310. Under the restriction of the receiving groove 322, the torsion portion 333 cannot rotate continuously, and the metal rod of the trigger end 331 is twisted axially, so that the torsion portion 333 applies a torque to the receiving groove 322 and an approaching pressure to the mounting base 310. So that the retention of the removable cover 320 is a stable crimp against the mounting base 310.
In order to stabilize the control in the locked position, as shown in fig. 2 and 3, a locking groove 313 is further provided on the mounting base 310, and when the movable cover 320 is fastened, the locking end 332 enters the locking groove 313.
By providing the mounting base 310 and the movable cover 320, the partial discharge sensor 100 can be completely wrapped inside, so as to avoid external interference, and ensure the stability of detection of the partial discharge sensor 100.
It is important to note that the construction and arrangement of the present application as shown in the various exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters (e.g., temperatures, pressures, etc.), mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter recited in this application. For example, elements shown as integrally formed may be constructed of multiple parts or elements, the position of elements may be reversed or otherwise varied, and the nature or number of discrete elements or positions may be altered or varied. Accordingly, all such modifications are intended to be included within the scope of this invention. The order or sequence of any process or method steps may be varied or re-sequenced according to alternative embodiments. In the claims, any means-plus-function clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present inventions. Therefore, the present invention is not limited to a particular embodiment, but extends to various modifications that nevertheless fall within the scope of the appended claims.
Moreover, in an effort to provide a concise description of the exemplary embodiments, all features of an actual implementation may not be described (i.e., those unrelated to the presently contemplated best mode of carrying out the invention, or those unrelated to enabling the invention).
It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort might be complex and time consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure, without undue experimentation.
It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (10)
1. The utility model provides a state monitoring sensor fault detection device which characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
the partial discharge sensor (100) is arranged on the capacitive equipment and used for detecting the state of the capacitive equipment;
the fault detection module (200) is connected with the partial discharge sensor (100) through a secondary side circuit (110) and used for monitoring the working state of the partial discharge sensor (100);
and a mounting member (300) which is provided outside the partial discharge sensor (100) and has a fixed state in which the partial discharge sensor (100) is fixed.
2. The condition monitoring sensor fault detection device according to claim 1, wherein: the fault detection module (200) comprises a processing module (210), a power supply module (220), an input module (230), an output module (240) and a display module (250), wherein the input module (230) is connected with the partial discharge sensor (100) through the secondary side circuit (110).
3. The condition monitoring sensor malfunction detection device according to claim 2, characterized in that: the fault detection module (200) inputs a power frequency current signal to the partial discharge sensor (100), and receives a return signal of the partial discharge sensor (100) through a secondary side circuit (110).
4. The condition monitoring sensor fault detection device according to claim 1, wherein: the mounting assembly (300) comprises
A mounting base (310) arranged on one side of the partial discharge sensor (100) and comprising a mounting groove (311) for mounting the sensor,
a movable cover plate (320) rotatably provided at one side of the mounting base (310) through a hinge shaft,
the control rod (330) is arranged on the movable cover plate (320) and comprises an triggering end (331) which is contacted with the movable cover plate (320) and a locking end (332) which is detachably connected to the mounting base (310).
5. The condition monitoring sensor fault detection device according to claim 4, wherein: be equipped with card foot (312) in mounting groove (311), sensor (100) joint is put in office is in card foot (312).
6. The condition monitoring sensor malfunction detection device according to claim 5, characterized in that: a crimping plate (321) is arranged in the movable cover plate (320), and when the movable cover plate (320) is buckled on the mounting base (310), the crimping plate (321) is in contact with the partial discharge sensor (100).
7. The condition monitoring sensor malfunction detection device according to claim 6, characterized in that: the clamping feet (312) and the crimping plate (321) are provided with positioning parts (323) extending towards the side wall of the partial discharge sensor (100), and when the movable cover plate (320) is buckled on the mounting base (310), the crimping plate (321) and the positioning parts (323) of the clamping feet (312) are staggered.
8. The condition monitoring sensor malfunction detection device according to any one of claims 4 to 7, characterized in that: removable cover (320) are connected be equipped with on one side of mounting base (310) and be suitable for and hold storage tank (322) of trigger end (331), trigger end (331) with locking end (332) are connected perpendicularly, be equipped with torsion portion (333) on trigger end (331), torsion portion (333) are located in storage tank (322).
9. The condition monitoring sensor fault detection device according to claim 8, wherein: the torsion part (333) is bent and raised from the triggering end (331), and in the process that the movable cover plate (320) is buckled on the mounting base (310), the torsion part (333) rotates relative to the triggering end (331).
10. The condition monitoring sensor fault detection device according to claim 9, wherein: still be equipped with locking groove (313) on mounting base (310), when removable cover (320) lock, locking end (332) get into locking groove (313).
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|---|---|---|---|
| CN202011255947.9A CN112363100B (en) | 2020-11-11 | 2020-11-11 | Fault detection device of state monitoring sensor |
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|---|---|---|---|
| CN202011255947.9A CN112363100B (en) | 2020-11-11 | 2020-11-11 | Fault detection device of state monitoring sensor |
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| CN112363100A true CN112363100A (en) | 2021-02-12 |
| CN112363100B CN112363100B (en) | 2023-10-20 |
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| Publication number | Publication date |
|---|---|
| CN112363100B (en) | 2023-10-20 |
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