CN115932697A - Comprehensive evaluation method and device for capacitive voltage transformer - Google Patents
Comprehensive evaluation method and device for capacitive voltage transformer Download PDFInfo
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- 238000001514 detection method Methods 0.000 claims abstract description 32
- 239000003990 capacitor Substances 0.000 claims description 15
- 238000009434 installation Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 4
- 230000007797 corrosion Effects 0.000 claims description 3
- 238000005260 corrosion Methods 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 3
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Abstract
The invention relates to the technical field of electrical detection equipment, in particular to a comprehensive evaluation method and a comprehensive evaluation device for a capacitive voltage transformer. According to the invention, through the arrangement of the accommodating mechanism, the cable for wiring can be accommodated and detected in the device more conveniently, and the cable and the electric connection plug are connected in a fixed state when being stretched, so that the phenomenon of breakage is reduced, the cable is effectively protected, the cable does not need to be stored and accommodated independently after detection is finished every time, and the convenience degree of detection and evaluation of the voltage transformer is also improved.
Description
Technical Field
The invention relates to the technical field of electrical detection equipment, in particular to a comprehensive evaluation method and a comprehensive evaluation device for a capacitive voltage transformer.
Background
The capacitor voltage transformer is a voltage transformer which is divided by a series capacitor, then is subjected to voltage reduction and isolation by an electromagnetic transformer, is used as a meter, relay protection and the like, can couple a carrier frequency to a power transmission line for long-distance communication, remote measurement, selective high-frequency protection of a line, remote control, teletype and the like, and therefore compared with the conventional electromagnetic voltage transformer, the capacitor voltage transformer has many advantages in economy and safety in addition to preventing ferromagnetic resonance caused by saturation of an iron core of the voltage transformer.
The existing comprehensive evaluation device for the capacitive voltage transformer is used for collecting data through detection equipment, the existing comprehensive evaluation device is often required to be connected with the voltage transformer through a plurality of connecting cables for electrifying, the detection on the data of the voltage transformer is completed, the comprehensive evaluation is carried out, but before and after every detection, the cables are required to be independently stored, taken and carried, the cables are directly placed inside the detection device, the cables are easy to entangle and extrude, the cables are easy to damage, the cleaning degree inside the detection device can be influenced, and the workers are inconvenient to detect and evaluate the voltage transformer at every time.
Therefore, a comprehensive evaluation method and a comprehensive evaluation device for the capacitor voltage transformer are provided.
Disclosure of Invention
The invention aims to provide a comprehensive evaluation method and a comprehensive evaluation device for a capacitor voltage transformer, which aim to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a capacitive voltage transformer's comprehensive evaluation device, includes the shell, the inside fixed mounting of shell has detection mechanism, the internally mounted of shell has wiring mechanism, wiring mechanism includes the inside installing frame of fixed mounting at the shell, control mechanism is installed at the top of installing frame, the internally mounted of installing frame has receiving mechanism, receiving mechanism includes a plurality of receivers of movable mounting in the installing frame inside, control mechanism is including seting up a plurality of spouts at the installing frame top, the inside slidable mounting of spout has the L template, the screw thread post is installed to the top screw thread of L template, the top slidable mounting of L template has the control panel, the bottom of control panel is rotated and is installed the connecting strip, the inside slidable mounting of L template has the elasticity latch, the bottom of connecting strip is rotated with the top of elasticity latch and is connected, the inside fixed mounting of spout has the ratchet, swing joint between elasticity latch and the ratchet, the bottom of screw thread post runs through the installing frame and extends to the inside of receiver.
Preferably, a sliding plate is slidably mounted inside the storage box, a fixed wheel is rotatably mounted inside the storage box, a first spring is fixedly mounted on one side of the sliding plate, and one side of the first spring is fixedly connected with the inner wall of the storage box.
Preferably, one side of the sliding plate is rotatably provided with a moving wheel, and the outer surfaces of the fixed wheel and the moving wheel are wound with the same cable.
Preferably, one side fixed mounting inside the receiver has the electricity connection plug, the opposite side movable mounting inside the receiver has the electricity connection clamp, fixed mounting has No. two springs between receiver and the installing frame.
Preferably, one end of the cable is fixedly connected with the power connection plug, and the other end of the cable is fixedly connected with the power connection clamp.
Preferably, the inside fixed mounting of installation frame has the electricity and connects the electric picture peg, connect movable connection between one side of electric picture peg and the electricity plug.
Preferably, one side of the mounting frame extends to the outside of the casing, a cover plate is rotatably mounted on one side of the mounting frame, a clamping plate is rotatably mounted on one side of the casing, and the inner surface of the clamping plate is movably connected with the outer surface of the cover plate.
The comprehensive evaluation method of the capacitive voltage transformer comprises the comprehensive evaluation device of the capacitive voltage transformer, and specifically comprises the following steps:
s1, acquiring inherent information of the voltage transformer, wherein the inherent information comprises one or more of equipment information, delivery information, maintenance information and appearance;
s2, acquiring operation information of the voltage transformer through a comprehensive evaluation device and other detection equipment of the capacitive voltage transformer, and operating one or more of capacitance, temperature rise, operation sound, the condition of the outer insulating surface of the capacitor and the condition of base corrosion of the capacitive voltage divider;
s3, obtaining an initial state evaluation result of the voltage transformer according to the comparison of the inherent information and the big data information of the voltage transformer, obtaining an online state evaluation result of the voltage transformer according to the comparison of the operation information and the big data information of the voltage transformer, making a comparison table according to the initial state evaluation result and the initial state evaluation result of the voltage transformer of the type extracted on line, and making a comparison table according to the online state evaluation result and the online state evaluation result of the voltage transformer of the type extracted on line;
s4, calculating a membership function value according to the evaluation value of the comprehensive evaluation result, then calculating the weight of the comprehensive index, and finally obtaining the state evaluation score of the voltage transformer through an evaluation algorithm;
and S5, if the state evaluation grade of the voltage transformer is judged to be unqualified, sending an alarm instruction to a comprehensive evaluation device of the capacitor voltage transformer, and giving an alarm to internal elements of the comprehensive evaluation device of the capacitor voltage transformer.
Compared with the prior art, the invention has the beneficial effects that:
1. through receiving mechanism's setting, the inside that uses the cable of wiring can be comparatively convenient accomodate and detection device to because the cable can keep fixed state when connecing electric plug connection in tensile cable, also reduced the phenomenon of taking place to damage, carry out effectual protection to the cable, need not to deposit alone and accomodate after the completion of measuring at every turn, also improved the convenient degree to voltage transformer when detecting the evaluation.
2. Through control mechanism's setting, make every receiving mechanism all can be convenient quick take out and install from detection device is inside, make detection device can be applicable to the service environment of difference in the middle of, also make the inside cable of receiving device take place to damage simultaneously, conveniently change, also guaranteed the stability of receiving device after the installation.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the overall construction of the wiring mechanism of the present invention;
FIG. 3 is a schematic view of the internal structure of the wiring mechanism of the present invention;
FIG. 4 is an enlarged view of the structure at A in FIG. 2;
fig. 5 is an enlarged view of the structure at B in fig. 3.
In the figure: 1. a housing; 2. a detection mechanism; 3. a wiring mechanism; 4. installing a frame; 5. clamping a plate; 6. a control mechanism; 7. a storage mechanism; 8. a storage box; 9. a chute; 10. an L-shaped plate; 11. a threaded post; 12. a control panel; 13. a connecting strip; 14. elastic latch; 15. a ratchet bar; 16. a sliding plate; 17. a fixed wheel; 18. a moving wheel; 19. a cable; 20. connecting a power plug; 21. connecting an electric clip; 22. connecting a power plug board; 23. a cover plate; 24. a first spring; 25. and a second spring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, 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 invention.
In the description of the present invention, 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", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
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 implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. Furthermore, the terms "mounted," "connected," and "coupled" are to be construed broadly and may include, for example, fixed connections, removable connections, or integral connections; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.
Referring to fig. 1 to 5, the present invention provides a method and an apparatus for comprehensively evaluating a capacitive voltage transformer, the technical solution is as follows:
a comprehensive evaluation device of a capacitive voltage transformer comprises a shell 1, wherein a detection mechanism 2 is fixedly mounted inside the shell 1, the detection mechanism 2 is electrically connected with an external power supply and is controlled by an external PLC (programmable logic controller) programming program, a wiring mechanism 3 is mounted inside the shell 1, the wiring mechanism 3 comprises a mounting frame 4 fixedly mounted inside the shell 1, a control mechanism 6 is mounted at the top of the mounting frame 4, a containing mechanism 7 is mounted inside the mounting frame 4, the containing mechanism 7 comprises a plurality of containing boxes 8 movably mounted inside the mounting frame 4, the control mechanism 6 comprises a plurality of sliding grooves 9 formed in the top of the mounting frame 4, an L-shaped plate 10 is slidably mounted inside the sliding grooves 9, a threaded column 11 is mounted on the top of the L-shaped plate 10 through a thread, the threaded column 11 is a rotating shaft with a part provided with a thread, a control plate 12 is slidably mounted on the top of the L-shaped plate 10, a connecting strip 13 is rotatably mounted at the bottom of the control plate 12, an elastic latch 14 is slidably mounted inside the L-shaped plate 10, the elastic latch 14 can be compressed by a ratchet 15, the connecting strip 13 is rotatably connected with the top of the elastic latch 14, a ratchet 15 is fixedly mounted inside the connecting strip, a ratchet 15, the ratchet 15 is movably connected with the bottom of the ratchet 14, and the ratchet 15, and the ratchet frame 4 extends to the ratchet box 8;
in an initial state, the bottom end of the threaded column 11 is inserted into the storage box 8, the elastic latch 14 and the ratchet bar 15 are clamped, the storage box 8 is fixed inside the mounting frame 4 through the L-shaped plate 10, the threaded column 11 is rotated, the threaded column 11 moves upwards, the control plate 12 can be driven to move simultaneously, the control plate 12 enables the elastic latch 14 to be pulled towards a direction away from the ratchet bar 15 through the connecting strip 13, the storage box 8 is pushed out of the mounting frame 4, the storage box 8 can be taken out, when a new storage box 8 is mounted, the storage box 8 is pushed towards the inside of the mounting frame 4, when the storage box 8 supports against the L-shaped plate 10, the threaded column 11 is rotated, the threaded column 11 moves downwards and is inserted into the storage box 8, the control plate 12 can enable the elastic latch 14 to be contacted with the ratchet bar 15 again through the connecting strip 13, then the threaded column 11 can be pushed, the L-shaped plate 10 drives the storage box 8 to withdraw the inside of the mounting frame 4, the elastic latch 14 can be matched with the ratchet bar 15, and the mounted storage box 8 can be fixed.
As an embodiment of the present invention, referring to fig. 3, a sliding plate 16 is slidably installed inside a storage box 8, a fixed wheel 17 is rotatably installed inside the storage box 8, a first spring 24 is fixedly installed on one side of the sliding plate 16, one side of the first spring 24 is fixedly connected with the inner wall of the storage box 8, a moving wheel 18 is rotatably installed on one side of the sliding plate 16, the same cable 19 is wound around the outer surfaces of the fixed wheel 17 and the moving wheel 18, a power connection plug 20 is fixedly installed on one side inside the storage box 8, a power connection clamp 21 is movably installed on the other side inside the storage box 8, a second spring 25 is fixedly installed between the storage box 8 and a mounting frame 4, one end of the cable 19 is fixedly connected with the power connection plug 20, the other end of the cable 19 is fixedly connected with the power connection clamp 21, a power connection plug board 22 is fixedly installed inside the mounting frame 4, the power connection plug board 22 is electrically connected with a detection mechanism 2, one side of the power connection board 22 is movably connected with the power connection plug 20, the power connection board 22 is electrically connected when the power connection plug board 20 is connected, one side of the power connection board 4 extends to the outside of the housing 1, a cover board 23 is rotatably installed on one side of the housing 4, and an inner surface of the housing 5 is connected with the outer surface of the housing 5;
the clamping plate 5 is rotated, the cover plate 23 is opened, the power receiving clamp 21 is pulled out of the storage box 8, in the process that the power receiving clamp 21 is pulled out, the cables 19 wound on the fixed wheel 17 and the movable wheel 18 can be driven to move, the sliding plate 16 is pulled, the first spring 24 is compressed, the cables 19 are pulled out of the storage box 8, the power receiving clamp 21 and the voltage transformer can be connected, the internal detection mechanism 2 is connected with an external power supply, the detection mechanism 2 is started, the detection mechanism 2 is used for electrifying the cables 19 through the power receiving inserting plate 22 and the power receiving plug 20, the detection mechanism 2 can be used for detecting the voltage transformer through the power receiving clamp 21, after detection is completed, the power receiving clamp 21 is taken down, the first spring 24 pushes the sliding plate 16 back to the original position, and the cables 19 are stored and recovered in the storage box 8 again.
The comprehensive evaluation method of the capacitive voltage transformer comprises the comprehensive evaluation device of the capacitive voltage transformer, and specifically comprises the following steps:
s1, obtaining inherent information of a voltage transformer, wherein the inherent information comprises one or more of equipment information, overhaul and maintenance information, appearance and environmental conditions;
s2, acquiring operation information of the voltage transformer through a comprehensive evaluation device and other detection equipment of the capacitive voltage transformer, wherein the operation information comprises one or more of capacitance, temperature rise, operation sound, the condition of the outer insulating surface of the capacitor and the condition of base corrosion of the capacitive voltage divider;
s3, comparing the inherent information with big data information of the voltage transformer to obtain an initial state evaluation result of the voltage transformer, comparing the operation information with the big data information of the voltage transformer to obtain an online state evaluation result of the voltage transformer, making a comparison table according to the initial state evaluation result and the online extracted initial state evaluation result of the type of the voltage transformer, and making a comparison table according to the online state evaluation result and the online extracted online state evaluation result of the type of the voltage transformer;
s4, calculating a membership function value according to the evaluation value of the comprehensive evaluation result, then calculating the weight of the comprehensive index, and finally obtaining the state evaluation score of the voltage transformer through an evaluation algorithm;
and S5, if the state evaluation grade of the voltage transformer is judged to be unqualified, sending an alarm instruction to a comprehensive evaluation device of the capacitor voltage transformer, and giving an alarm to internal elements of the comprehensive evaluation device of the capacitor voltage transformer.
Based on the embodiment, the membership function value is calculated according to the evaluation value of the comprehensive evaluation result, then the comprehensive index weight is calculated, and finally the state evaluation score of the voltage transformer is obtained through an evaluation algorithm, wherein the evaluation formula is as follows:
and (3) calculating membership function values:
the mu (Xa) represents the membership function value of the score value of the a-th evaluation result, xa represents the score value of the a-th evaluation category of the detected voltage transformer, xmax represents the maximum value of all the comprehensive scores in the a-th evaluation category, and Xmin represents the minimum value of the comprehensive scores in the a-th evaluation category;
calculating the weight in the comprehensive index:
wa represents the weight of the a-th index in all indexes, P a The ratio of the a-th score of the detected voltage transformer in the overall score is represented by Pa, and the ratio of the a-th score in the evaluation category is represented by Pa.
Evaluation algorithm:
and D is state evaluation and scoring, the state evaluation and scoring is carried out according to the evaluation and scoring of the voltage transformers of the model extracted on the line, when D is greater than or equal to the evaluation and scoring of the voltage transformers of the model extracted on the line, the detected voltage transformers are judged, and when D is less than the evaluation and scoring of the voltage transformers of the model extracted on the line, the voltage transformers are unqualified.
The working principle is as follows: when a voltage transformer needs to be detected, the clamping plate 5 is rotated, the cover plate 23 is opened, the power receiving clamp 21 is pulled out of the storage box 8, in the process of pulling the power receiving clamp 21 out, the cables 19 wound on the fixed wheel 17 and the movable wheel 18 are driven to move, the sliding plate 16 is pulled, the first spring 24 is compressed, the cables 19 are pulled out of the storage box 8, the power receiving clamp 21 and the voltage transformer can be connected, the internal detection mechanism 2 is connected with an external power supply, the detection mechanism 2 is started, the detection mechanism 2 is powered on the cables 19 through the power connection inserting plate 22 and the power connection plug 20, the detection mechanism 2 can detect the voltage transformer through the power connection clamp 21, the power receiving clamp 21 is taken down after detection is completed, the first spring 24 pushes the sliding plate 16 back to the original position, and the cables 19 are stored and recovered in the storage box 8 again, the detection mechanism 2 classifies and counts detected data, the evaluation of the data is completed by comparing the data with inherent information of the voltage transformer, in an initial state, the bottom end of the threaded column 11 is inserted into the storage box 8, the elastic latch 14 is clamped with the ratchet rack 15, the storage box 8 is in a fixed state in the installation frame 4 through the L-shaped plate 10, when different interfaces and new cables 19 need to be replaced, the threaded column 11 is rotated, the threaded column 11 moves upwards, and simultaneously the control plate 12 is driven to move simultaneously, the control plate 12 enables the elastic latch 14 to be pulled away from the ratchet rack 15 through the connecting strip 13, the second spring 25 pushes the L-shaped plate 10 to push the storage box 8 out of the installation frame 4, the connection between the power connection plug 20 and the power connection plug board 22 is also released, namely, the storage box 8 can be taken out, when a new storage box 8 is installed, the storage box 8 is pushed towards the interior of the installation frame 4, when receiver 8 supports L template 10, rotate screw post 11, make screw post 11 downstream, and insert inside receiver 8, control panel 12 also can make elasticity latch 14 contact again between with ratchet bar 15 through connecting strip 13, then can be through promoting screw post 11, make L template 10 drive receiver 8 and withdraw the inside of installing frame 4, and cooperate between elasticity latch 14 can and ratchet bar 15, make receiver 8 after the installation fixed, connect electric plug 20 also can insert and connect electric picture peg 22.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a comprehensive evaluation device of capacitive voltage transformer, includes shell (1), the inside fixed mounting of shell (1) has detection mechanism (2), its characterized in that: the wiring mechanism (3) is installed inside the shell (1), the wiring mechanism (3) comprises an installation frame (4) fixedly installed inside the shell (1), a control mechanism (6) is installed at the top of the installation frame (4), a storage mechanism (7) is installed inside the installation frame (4), and the storage mechanism (7) comprises a plurality of storage boxes (8) movably installed inside the installation frame (4);
control mechanism (6) are including offering a plurality of spouts (9) at installing frame (4) top, the inside slidable mounting of spout (9) has L template (10), threaded column (11) are installed to the top screw thread of L template (10), the top slidable mounting of L template (10) has control panel (12), the bottom of control panel (12) is rotated and is installed connecting strip (13), the inside slidable mounting of L template (10) has elasticity latch (14), the bottom of connecting strip (13) is rotated with the top of elasticity latch (14) and is connected, the inside fixed mounting of spout (9) has ratchet (15), swing joint between elasticity latch (14) and ratchet (15), the inside of installing frame (4) and extending to receiver (8) is run through to the bottom of threaded column (11).
2. The comprehensive evaluation device of the capacitive voltage transformer according to claim 1, wherein: the inside slidable mounting of receiver (8) has sliding plate (16), the inside rotation of receiver (8) installs tight pulley (17), one side fixed mounting of sliding plate (16) has spring (24), one side of spring (24) and the inner wall fixed connection of receiver (8).
3. The comprehensive evaluation device of the capacitor voltage transformer according to claim 2, wherein: one side of the sliding plate (16) is rotatably provided with a moving wheel (18), and the outer surfaces of the fixed wheel (17) and the moving wheel (18) are wound with the same cable (19).
4. The comprehensive evaluation device of the capacitive voltage transformer according to claim 1, wherein: receiver (8) inside one side fixed mounting connect electric plug (20), the inside opposite side movable mounting of receiver (8) connects electric clamp (21), fixed mounting has No. two spring (25) between receiver (8) and installing frame (4).
5. The comprehensive evaluation method and device of the capacitive voltage transformer according to claim 3, characterized in that: one end of the cable (19) is fixedly connected with the power connection plug (20), and the other end of the cable (19) is fixedly connected with the power connection clamp (21).
6. The comprehensive evaluation device of the capacitive voltage transformer according to claim 1, wherein: the inside fixed mounting of installing frame (4) connects electric picture peg (22), connect swing joint between one side of electric picture peg (22) and connect electric plug (20).
7. The comprehensive evaluation device of the capacitive voltage transformer according to claim 1, wherein: one side of installing frame (4) extends to the outside of outer casing (1), apron (23) are installed in one side rotation of installing frame (4), cardboard (5) are installed in one side rotation of outer casing (1), the internal surface of cardboard (5) and the surface swing joint of apron (23).
8. A comprehensive evaluation method of a capacitive voltage transformer, the comprehensive evaluation method of a capacitive voltage transformer comprising the comprehensive evaluation device of a capacitive voltage transformer according to any one of claims 1 to 7, characterized in that:
the method specifically comprises the following steps:
s1, obtaining inherent information of a voltage transformer, wherein the inherent information comprises one or more of equipment information, factory information, maintenance information and appearance;
s2, acquiring operation information of the voltage transformer through a comprehensive evaluation device and other detection equipment of the capacitive voltage transformer, wherein the operation information comprises one or more of capacitance, temperature rise, operation sound, the condition of the outer insulating surface of the capacitor and the condition of base corrosion of the capacitive voltage divider;
s3, obtaining an initial state evaluation result of the voltage transformer according to the comparison of the inherent information and the big data information of the voltage transformer, obtaining an online state evaluation result of the voltage transformer according to the comparison of the operation information and the big data information of the voltage transformer, making a comparison table according to the initial state evaluation result and the initial state evaluation result of the voltage transformer of the type extracted on line, and making a comparison table according to the online state evaluation result and the online state evaluation result of the voltage transformer of the type extracted on line;
s4, calculating a membership function value according to the evaluation value of the comprehensive evaluation result, then calculating the weight of the comprehensive index, and finally obtaining the state evaluation score of the voltage transformer through an evaluation algorithm;
and S5, if the state evaluation grade of the voltage transformer is judged to be unqualified, sending an alarm instruction to a comprehensive evaluation device of the capacitor voltage transformer, and giving an alarm to internal elements of the comprehensive evaluation device of the capacitor voltage transformer.
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| CN202211362700.6A CN115932697A (en) | 2022-11-02 | 2022-11-02 | Comprehensive evaluation method and device for capacitive voltage transformer |
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| CN202211362700.6A CN115932697A (en) | 2022-11-02 | 2022-11-02 | Comprehensive evaluation method and device for capacitive voltage transformer |
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