CN114811319A - Single-phase earth fault traveling wave measuring device of distribution network - Google Patents
Single-phase earth fault traveling wave measuring device of distribution network Download PDFInfo
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- CN114811319A CN114811319A CN202210515244.8A CN202210515244A CN114811319A CN 114811319 A CN114811319 A CN 114811319A CN 202210515244 A CN202210515244 A CN 202210515244A CN 114811319 A CN114811319 A CN 114811319A
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- 238000005259 measurement Methods 0.000 claims abstract description 23
- 238000013016 damping Methods 0.000 claims description 32
- 230000017525 heat dissipation Effects 0.000 claims description 5
- 230000035939 shock Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 description 10
- 238000000034 method Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/02—Heads
- F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/06—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs
- F16F15/067—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs using only wound springs
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
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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
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/086—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution networks, i.e. with interconnected conductors
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- General Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Abstract
The invention belongs to the technical field of traveling wave measuring equipment, and particularly relates to a traveling wave measuring device for a single-phase earth fault of a power distribution network. And then, theoretical bases and application conditions of various algorithms are analyzed, compared and discussed class by class, and the advantages of the various distance measurement algorithms and the existing problems are summarized on the basis, four groups of fixed blocks are fixedly connected to a bottom plate at intervals, two groups of first folding doors are transversely and rotatably connected to the four groups of fixed blocks, second folding doors matched with the first folding doors are longitudinally and rotatably connected to the four groups of fixed blocks, and locking devices matched with the first folding doors and the second folding doors are arranged on the four groups of fixed blocks and used for unlocking and locking the first folding doors and the second folding doors.
Description
Technical Field
The invention belongs to the technical field of traveling wave measuring equipment, and particularly relates to a single-phase earth fault traveling wave measuring device for a power distribution network.
Background
The travelling wave distance measurement method is a distance measurement method realized according to a travelling wave theory. The traveling wave fault location method mainly comprises the following modes of A-type traveling wave location, B-type traveling wave location and C-type traveling wave location, wherein the C-type traveling wave location utilizes the injection of a pulse signal at the initial end of a line after a fault occurs and carries out location according to the round-trip time of the pulse signal from a detection device to a fault point, and the traveling wave fault location principle of the power transmission line comprises the following steps: determining a fault occurrence section by using a single-ended impedance algorithm with the highest robustness, and then obtaining a fault distance by using an accurate current traveling wave method based on wavelet transformation; impedance method: the traveling wave method is applied to fault location of the electrified railway traction network, and the location accuracy and stability are not influenced by the characteristics of transition resistance, traction load and the like. This will probably eliminate many kinds of accidental errors in the distance measurement of the traction network, and really obtain the stable and accurate conclusion of the fault location of the traction network. When the traveling wave method is used for ranging, the time for the traveling wave signal to reach the traveling wave signal detection device and the traveling wave speed are generally determined at the same time, so that the fault point can be accurately positioned.
The existing traveling wave measuring device is inconvenient to carry, single in structural function, poor in working stability and poor in damping effect, and internal electrical elements are easily damaged.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a traveling wave measuring device for a single-phase earth fault of a power distribution network, and solves the technical problems that the existing traveling wave measuring device is inconvenient to carry, single in structural function, poor in working stability, poor in damping effect and easy to damage internal electrical elements.
The scheme adopted by the invention is as follows: the utility model provides a distribution network single-phase earth fault traveling wave measuring device, includes the bottom plate, its characterized in that, the bottom plate on interval fixedly connected with four fixed blocks of group, four groups the fixed block on transversely rotate and be connected with two sets of first folding doors, four groups the fixed block on vertically rotate and be connected with first folding door complex second folding door, four groups the fixed block be equipped with first folding door, the second folding door complex locking device for unblock and lock first folding door, the second folding door, the bottom plate on be connected with the backup pad through damping device for the backup pad shock attenuation, the backup pad on can dismantle and be connected with the traveling wave and measure the body.
Preferably, two groups of sliding grooves are arranged on the supporting plate at intervals, first clamping plates matched with the traveling wave measuring body are connected in the two groups of sliding grooves in a sliding mode, two groups of vertical plates are fixedly connected on the supporting plate at intervals, three groups of first clamping springs are fixedly connected on the two groups of vertical plates and the first clamping plates at intervals, and second clamping springs are fixedly connected between the sliding grooves and the first clamping plates.
Preferably, the inner side wall of the supporting plate is fixedly connected with two groups of clamping telescopic rods, and the extending ends of the two groups of clamping telescopic rods are fixedly connected with a second clamping plate matched with the traveling wave measuring body.
Preferably, the first clamping plate is provided with heat dissipation holes at intervals, and the heat dissipation holes correspond to the traveling wave measurement body.
Preferably, the locking device comprises four groups of first positioning columns which are connected with the fixing block in a transverse sliding manner, first reset springs are fixedly connected between the four groups of first positioning columns and the inner side walls of the fixing block, first positioning holes corresponding to the first positioning columns are formed in two groups of first folding doors, limit blocks are arranged on the fixing block, and the limit blocks are connected with the first positioning columns through soft ropes; the fixed block on four groups of second reference columns of horizontal sliding connection, four groups fixedly connected with second reset spring between second reference column and the fixed block inboard wall, two groups the second folding door on set up the second locating hole that corresponds with the second reference column, stopper and second locating column between be connected through the rope, the stopper on fixedly connected with unblock handle.
Preferably, the damping device comprises four groups of damping telescopic rods fixedly connected to the bottom plate at intervals, the extending ends of the four groups of damping telescopic rods are fixedly connected to the supporting plate, and damping springs sleeved on the damping telescopic rods are fixedly connected between the supporting plate and the bottom plate.
Preferably, the first clamping plate and the second damping plate are provided with sponge blocks, and the first folding door is provided with a hand-held handle.
The invention has the beneficial effects that:
firstly, locking devices matched with a first folding door and a second folding door are arranged through a fixing block, the first folding door and the second folding door are unlocked, a traveling wave measuring body is placed on a bottom plate and is connected with a supporting plate through a damping device, when the damping device is used for moving an integral device, electrical elements in the traveling wave measuring body are protected, and the internal electrical elements are prevented from being damaged;
when the traveling wave measuring body is placed, the traveling wave measuring body is firstly contacted with the two groups of first clamping plates, the elastic force of the first clamping springs is overcome, the first clamping plates move in the sliding groove, meanwhile, the elastic force of the second clamping springs is also overcome, and when the traveling wave measuring body is placed on the supporting plate, the traveling wave measuring body is clamped by the elastic forces of the first clamping springs and the second clamping springs and is stabilized on the supporting plate, so that the function of convenient disassembly is realized, and the installation efficiency is improved;
three, will two sets of tight telescopic links of clamp of fixed connection on the backup pad inside wall to and press from both sides tight telescopic link extension end fixedly connected with and measure body complex second pinch-off blades with the travelling wave, play the auxiliary clamping effect, when needs vertically press from both sides tightly, remove and press from both sides tight telescopic link, make the second pinch-off blades action, realize vertical tight function of clamp.
Drawings
Fig. 1 is one of perspective views of the present invention.
Fig. 2 is one of perspective sectional views of the present invention.
Fig. 3 is a partially enlarged view a of fig. 2.
Fig. 4 is a perspective view of the second embodiment of the present invention.
Fig. 5 is a third perspective view of the present invention.
Fig. 6 is a perspective view of the present invention.
Reference numerals: 1. a base plate; 2. a fixed block; 3. a first folding door; 4. a second folding door; 5. a support plate; 6. a traveling wave measurement body; 7. a sliding groove; 8. a first clamping plate; 9. a vertical plate; 10. a first clamping spring; 11. a second clamping spring; 12. clamping the telescopic rod; 13. a second clamping plate; 14. heat dissipation holes; 15. a first positioning post; 16. a first return spring; 17. a first positioning hole; 18. a limiting block; 19. a flexible cord; 20. a second positioning column; 21. a second return spring; 22. a second positioning hole; 23. an unlocking handle; 24. a shock-absorbing telescopic rod; 25. a damping spring; 26. a handle is carried by hand.
Detailed Description
The foregoing and other technical and scientific aspects, features and utilities of the present invention will be apparent from the following detailed description of the embodiments with reference to the accompanying drawings in which figures 1-6 are incorporated. The structural contents mentioned in the following embodiments are all referred to the attached drawings of the specification.
Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.
The first embodiment, a distribution network single-phase earth fault traveling wave measuring device, including bottom plate 1, its characterized in that, bottom plate 1 on interval fixedly connected with four fixed block 2 of group, four group fixed block 2 go up the horizontal rotation and be connected with two sets of first folding door 3, four group fixed block 2 on the vertical rotation be connected with first folding door 3 complex second folding door 4, four group fixed block 2 be equipped with first folding door 3, second folding door 4 complex locking device for unblock and locking first folding door 3, second folding door 4, bottom plate 1 on be connected with backup pad 5 through damping device for backup pad 5 shock attenuation, backup pad 5 on can dismantle and be connected with traveling wave and measure body 6.
This embodiment is when using, at first be equipped with through fixed block 2 with first folding door 3, 4 complex locking device of second folding door, to unblock first folding door 3, second folding door 4, first folding door 3 after the unblock, second folding door 4, it is connected with backup pad 5 to put into bottom plate 1 on through damping device with traveling wave measurement body 6, damping device is when being used for removing the overall device, protect the electric elements in traveling wave measurement body 6, prevent that inside electric elements from receiving the damage, when the backup pad 5 is placed to body 6 is measured at the traveling wave simultaneously, through locking device, body 6 is measured to the traveling wave is stabilized on backup pad 5, when body 6 is measured to the traveling wave when using, only need unblock locking device alright use traveling wave measurement body 6, play convenient and fast's effect, also portable simultaneously.
In the second embodiment, on the basis of the first embodiment, two sets of sliding grooves 7 are arranged on the supporting plate 5 at intervals, first clamping plates 8 matched with the traveling wave measuring body 6 are connected in the two sets of sliding grooves 7 in a sliding mode, two sets of vertical plates 9 are fixedly connected on the supporting plate 5 at intervals, three sets of first clamping springs 10 are fixedly connected on the two sets of vertical plates 9 and the first clamping plates 8 at intervals, and second clamping springs 11 are fixedly connected between the sliding grooves 7 and the first clamping plates 8.
This embodiment is when using, when placing travelling wave measurement body 6, the travelling wave measurement body 6 at first contacts with two sets of first clamp plates 8, will overcome the elasticity of first clamp spring 10 and remove first clamp plate 8 in sliding tray 7, also overcome the elasticity of second clamp spring 11 simultaneously, when placing travelling wave measurement body 6 on backup pad 5, at first clamp spring 10, the elasticity of second clamp spring 11 is measured the travelling wave and is pressed from both sides body 6 tightly, it is stable in backup pad 5, realize convenient to detach's function, the efficiency of installation has been improved.
In the third embodiment, on the basis of the second embodiment, two groups of clamping telescopic rods 12 are fixedly connected to the inner side wall of the supporting plate 5, and the extending ends of the two groups of clamping telescopic rods 12 are fixedly connected with second clamping plates 13 matched with the traveling wave measuring body 6.
When the device is used, two groups of fixedly connected clamping telescopic rods 12 are arranged on the inner side wall of the supporting plate 5, the extending ends of the clamping telescopic rods 12 are fixedly connected with second clamping plates 13 matched with the traveling wave measuring body 6, an auxiliary clamping effect is achieved, when the clamping is needed to be vertically carried out, the clamping telescopic rods 12 are moved, the second clamping plates 13 move, and the vertical clamping function is achieved.
In the fourth embodiment, on the basis of the third embodiment, heat dissipation holes 14 corresponding to the traveling wave measurement body 6 are formed in the first clamping plate 8 at intervals.
This embodiment is when using, and the interval is equipped with the louvre 14 that corresponds with body 6 is measured to the travelling wave on first pinch-off blades 8, helps the travelling wave to measure body 6 contact outside air, carries out the heat exchange, plays radiating effect, guarantees the travelling wave and measures the inside electrical components normal operating of body 6, can not receive the damage because of overheated.
Fifth embodiment, on the basis of the fourth embodiment, the locking device includes four groups of first positioning posts 15 which are transversely slidably connected to the fixing block 2, first return springs 16 are fixedly connected between the four groups of first positioning posts 15 and the inner side wall of the fixing block 2, first positioning holes 17 corresponding to the first positioning posts 15 are formed in the two groups of first folding doors 3, a limiting block 18 is arranged on the fixing block 2, and the limiting block 18 is connected with the first positioning posts 15 through a soft rope 19; the folding door is characterized in that the fixed block 2 is provided with four groups of second positioning columns 20 in transverse sliding connection, second return springs 21 are fixedly connected between the four groups of second positioning columns 20 and the inner side wall of the fixed block 2, two groups of second folding doors 4 are provided with second positioning holes 22 corresponding to the second positioning columns 20, the limiting blocks 18 are connected with the second positioning columns 20 through soft ropes 19, and the limiting blocks 18 are fixedly connected with unlocking handles 23.
When the traveling wave measurement body 6 is used and needs to be unlocked, the limiting block 18 is moved through the unlocking handle 23 to drive the soft rope 19 to enable the first positioning column 15 and the second positioning column 20 to overcome the elastic actions of the first return spring 16 and the second return spring 21, so that the first positioning column 15 and the second positioning column 20 are separated from the first positioning hole 17 and the second positioning hole 22, and at the moment, the two groups of first folding doors 3 and the two groups of second folding doors 4 can be moved to be opened;
moving the traveling wave measurement body 6 as required, when not needing to use, will remove two sets of first folding door 3 and two sets of second folding door 4 to first locating hole 17, second locating hole 22 and first locating column 15, second locating column 20 corresponds cooperation department, at first reset spring 16, under second reset spring 21's effect, make first locating column 15, second locating column 20 enter into first locating hole 17, in the second locating hole 22, realize the effect of locking, can the mobile device this moment, realize portable's effect.
Sixth embodiment, on the basis of fifth embodiment, the damping device includes four groups of damping telescopic rods 24 fixedly connected to the bottom plate 1 at intervals, the extending ends of the four groups of damping telescopic rods 24 are fixedly connected to the supporting plate 5, and a damping spring 25 sleeved on the damping telescopic rods 24 is fixedly connected between the supporting plate 5 and the bottom plate 1.
When the device is used, four groups of damping telescopic rods 24 are fixedly connected to the bottom plate 1 at intervals, and the damping springs 25 sleeved on the damping telescopic rods 24 are fixedly connected between the supporting plate 5 and the bottom plate 1, so that a damping effect is achieved when the device corresponds to the device, and the fact that the electric elements inside the traveling wave measuring body 6 cannot be damaged is guaranteed.
Seventh, on the basis of the sixth embodiment, the first clamping plate 8 and the second damping plate are provided with sponge blocks, and the first folding door 3 is provided with a handle 26.
When this embodiment is used, when removing this equipment, can be through the portable handle 26 of establishing on first folding door 3, be equipped with the sponge piece on first pinch-off blades 8 and second shock attenuation board, can protect the surface of travelling wave measurement body 6 not to receive the damage when locking.
The above description is only for the purpose of illustrating the present invention, and it should be understood that the present invention is not limited to the above embodiments, and various modifications conforming to the spirit of the present invention are within the scope of the present invention.
Claims (7)
1. The utility model provides a single-phase earth fault traveling wave measuring device of distribution network, includes bottom plate (1), its characterized in that, bottom plate (1) go up four fixed block (2) of interval fixedly connected with, four fixed block (2) go up horizontal rotation and be connected with two sets of first folding door (3), four groups fixed block (2) go up vertical rotation be connected with first folding door (3) complex second folding door (4), four groups fixed block (2) be equipped with first folding door 3, second folding door (4) complex locking device for unblock and locking first folding door 3, second folding door (4), bottom plate (1) go up to be connected with backup pad (5) through damping device for backup pad (5) shock attenuation, backup pad (5) on can dismantle and be connected with traveling wave and measure body (6).
2. The single-phase ground fault traveling wave measurement device of the power distribution network according to claim 1, wherein two sets of sliding grooves (7) are formed in the support plate (5) at intervals, first clamping plates (8) matched with the traveling wave measurement body (6) are slidably connected in the two sets of sliding grooves (7), two sets of vertical plates (9) are fixedly connected to the support plate (5) at intervals, three sets of first clamping springs (10) are fixedly connected to the two sets of vertical plates (9) and the first clamping plates (8) at intervals, and second clamping springs (11) are fixedly connected between the sliding grooves (7) and the first clamping plates (8).
3. The traveling wave measurement device for the single-phase ground fault of the power distribution network according to claim 2, characterized in that two groups of clamping telescopic rods (12) are fixedly connected to the inner side wall of the support plate (5), and a second clamping plate (13) matched with the traveling wave measurement body (6) is fixedly connected to the extending ends of the two groups of clamping telescopic rods (12).
4. The traveling wave measurement device for the single-phase ground fault of the power distribution network according to claim 3, wherein the first clamping plate (8) is provided with heat dissipation holes (14) at intervals corresponding to the traveling wave measurement body (6).
5. The single-phase ground fault traveling wave measurement device of the power distribution network according to claim 4, characterized in that the locking device comprises four groups of first positioning posts (15) which are transversely slidably connected to the fixing block (2), a first return spring (16) is fixedly connected between the four groups of first positioning posts (15) and the inner side wall of the fixing block (2), two groups of first folding doors (3) are provided with first positioning holes (17) corresponding to the first positioning posts (15), the fixing block (2) is provided with a limiting block (18), and the limiting block (18) is connected with the first positioning posts (15) through soft ropes (19); the folding door is characterized in that the fixed block (2) is provided with four groups of second positioning columns (20) which are connected in a transverse sliding mode, second reset springs (21) are fixedly connected between the four groups of second positioning columns (20) and the inner side wall of the fixed block (2), two groups of second folding doors (4) are provided with second positioning holes (22) corresponding to the second positioning columns (20), the limiting blocks (18) are connected with the second positioning columns (20) through soft ropes (19), and the limiting blocks (18) are fixedly connected with unlocking handles (23).
6. The traveling wave measurement device for the single-phase ground fault of the power distribution network according to claim 5, wherein the damping device comprises four groups of damping telescopic rods (24) fixedly connected to the bottom plate (1) at intervals, the extending ends of the four groups of damping telescopic rods (24) are fixedly connected to the support plate (5), and damping springs (25) sleeved on the damping telescopic rods (24) are fixedly connected between the support plate (5) and the bottom plate (1).
7. The traveling wave measurement device for the single-phase ground fault of the power distribution network according to claim 6, wherein the first clamping plate (8) and the second damping plate are provided with sponge blocks, and the first folding door (3) is provided with a handle (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210515244.8A CN114811319A (en) | 2022-05-12 | 2022-05-12 | Single-phase earth fault traveling wave measuring device of distribution network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210515244.8A CN114811319A (en) | 2022-05-12 | 2022-05-12 | Single-phase earth fault traveling wave measuring device of distribution network |
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|---|---|
| CN114811319A true CN114811319A (en) | 2022-07-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210515244.8A Pending CN114811319A (en) | 2022-05-12 | 2022-05-12 | Single-phase earth fault traveling wave measuring device of distribution network |
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| CN (1) | CN114811319A (en) |
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| CN215005649U (en) * | 2021-01-26 | 2021-12-03 | 广西华诺电力工程有限公司 | Portable relay protection tester of wireless transmission |
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2022
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204021406U (en) * | 2014-05-29 | 2014-12-17 | 广东奥美格传导科技股份有限公司 | Folding carton |
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| US20210016922A1 (en) * | 2018-04-03 | 2021-01-21 | New-Tec Integration (Xiamen) Co., Ltd. | Assemblable storage box |
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