CN111551786B - Harmonic pollution monitoring device for power grid - Google Patents
Harmonic pollution monitoring device for power grid Download PDFInfo
- Publication number
- CN111551786B CN111551786B CN202010432387.3A CN202010432387A CN111551786B CN 111551786 B CN111551786 B CN 111551786B CN 202010432387 A CN202010432387 A CN 202010432387A CN 111551786 B CN111551786 B CN 111551786B
- Authority
- CN
- China
- Prior art keywords
- clamping seat
- current transformer
- sliding
- connecting rod
- power grid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
- G01R23/16—Spectrum analysis; Fourier analysis
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Transformers For Measuring Instruments (AREA)
Abstract
The invention belongs to the technical field of power grid harmonic monitoring, and particularly relates to a power grid harmonic pollution monitoring device which comprises an upper clamping seat, a lower clamping seat, an upper current transformer part and a lower current transformer part, wherein the upper current transformer part and the lower current transformer part are used for detecting cable data; the invention is provided with the upper clamping seat and the lower clamping seat which are connected with the external fixed structure, the upper clamping seat and the lower clamping seat are provided with the arc-shaped pressing plate structure which is used for pressing the cable and positioning the cable, and the sliding connecting rod is arranged for connecting the current transformer and the arc-shaped pressing plate, so that the current transformer and the arc-shaped pressing plate synchronously move, namely when the cable shakes, the arc-shaped pressing plate can be driven to move, and meanwhile, the current transformer also shakes, so that the relative position between the current transformer and the cable is not changed and is relatively stable.
Description
Technical Field
The invention belongs to the technical field of power grid harmonic wave monitoring, and particularly relates to a power grid harmonic wave pollution monitoring device.
Background
With the large application of nonlinear power electronic technology equipment to power grid loads, power grid harmonic pollution is aggravated, so that not only can the waveform of a power grid be distorted and the power supply quality be reduced, but also resonance can be caused and equipment can be damaged. In order to effectively analyze the influence caused by harmonic waves, the harmonic waves of the power grid must be continuously monitored on line, the fault working conditions are recorded in real time, the harmonic wave distribution situation in the distribution network is found through data acquisition and analysis, the harmonic wave flow distribution situation in the lines of the distribution network is found, the generation mechanism of the resonance of the distribution network in the harmonic wave environment is analyzed, and a basis is provided for the scientific management of the harmonic waves of the power grid; the harmonics reduce the efficiency of production, transmission and utilization of electrical energy, cause overheating of electrical equipment, vibration and noise generation, and cause insulation aging, shortened service life, and even failure or burnout. The harmonic wave can cause the local parallel resonance or series resonance of the power system, so that the harmonic wave content is amplified, and the equipment such as a capacitor and the like is burnt. Harmonic waves can also cause relay protection and automatic device malfunction, which makes electric energy metering chaotic. Outside of the power system, harmonics can cause severe interference to communication equipment and electronic equipment.
However, the existing harmonic detection device generally enables the current transformer to be hung on a cable to detect data, the current transformer is generally installed on the cable through a fixing device, when the cable shakes, the relative displacement of the cable relative to the current transformer occurs, and the accuracy of the detected harmonic detection device is affected.
Disclosure of Invention
The invention provides a power grid harmonic pollution monitoring device, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the power grid harmonic pollution monitoring device comprises an upper clamping seat, a lower clamping seat, a current transformer upper part and a current transformer lower part, wherein the current transformer upper part and the current transformer lower part are used for detecting cable data, the upper clamping seat and the lower clamping seat are hinged through a hinge, grooves are formed below the upper clamping seat and above the lower clamping seat, when the upper clamping seat and the lower clamping seat are closed, a cable groove is formed between the upper clamping seat and the lower clamping seat, a protruding part is arranged on the inner side of one end, away from the hinge, of the upper clamping seat, a clamping groove matched with the protruding part is formed in the lower clamping seat, the number of the upper clamping seat and the number of the lower clamping seat are two, the upper clamping seat and the lower clamping seat are respectively located on two sides of the current transformer upper part and the current transformer lower part, vertically arranged sliding grooves are formed in the upper clamping seat and the lower clamping seat, a sliding connecting rod is connected in the sliding grooves in a sliding mode, one end of the sliding connecting rod is fixed on the current transformer upper part or the current transformer lower part, the other end of slip connecting rod is connected with the gag lever post, the intermediate position department of gag lever post is equipped with the slide bar, the tip of slide bar is equipped with the arc pressfitting board, go up all be fixed with spacing piece on the outer wall of block seat and lower block seat, the slide bar runs through the arc pressfitting board, spacing piece with be equipped with the spring between the arc pressfitting board.
Preferably, the inner wall of arc pressfitting board is equipped with the contact site, the contact site is the rubber material, the inner wall of contact site is equipped with a plurality of arch.
Preferably, the sliding connecting rods are fixedly connected with the limiting rods through vertical connecting rods, the number of the vertical connecting rods is two, and the two vertical connecting rods are fixed on one limiting rod.
Preferably, the sliding connecting rod is cylindrical and rod-shaped, the outer wall of the sliding connecting rod is smooth, and the inner wall of the sliding groove is smooth.
Preferably, the limiting piece is circular, a sliding hole in sliding connection with the sliding rod is formed in the inner wall of the limiting piece, and the diameter of the sliding rod is the same as that of the sliding hole.
Preferably, the spring is a compression spring, and the arc-shaped pressing plate tends to move toward the center of the cable groove.
Preferably, the slide bar with can dismantle the connection between the gag lever post, the tip of slide bar is equipped with the spiral shell head, be equipped with the screw on the gag lever post, the slide bar with gag lever post threaded connection.
Preferably, screw holes are formed in the upper portion of the current transformer and the lower portion of the current transformer, a screw rod is arranged in the middle of the sliding connecting rod and penetrates through the sliding rod, and the screw rod is in threaded connection with the upper portion of the current transformer or the lower portion of the current transformer.
Preferably, the width of the upper clamping seat is at least one centimeter.
Preferably, the arc-shaped laminated plate is a hard metal plate.
Compared with the prior art, the invention has the beneficial effects that:
the invention is provided with the upper clamping seat and the lower clamping seat which are connected with the external fixed structure, the upper clamping seat and the lower clamping seat are provided with the arc-shaped pressing plate structure which is used for pressing the cable and positioning the cable, and the sliding connecting rod is arranged for connecting the current transformer and the arc-shaped pressing plate, so that the current transformer and the arc-shaped pressing plate synchronously move, namely when the cable shakes, the arc-shaped pressing plate can be driven to move, and meanwhile, the current transformer also shakes, so that the relative position between the current transformer and the cable is not changed and is relatively stable.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic view of an open state of a cable tray according to the present invention;
FIG. 3 is a schematic side view of the present invention;
fig. 4 is a schematic structural view of the arc-shaped laminate panel of the present invention.
In the figure: 1. an upper clamping seat; 11. a hinge; 12. a projection; 101. a cable trough; 102. a chute; 2. a lower clamping seat; 31. an arc-shaped laminated plate; 311. a contact portion; 32. a slide bar; 33. a limiting sheet; 34. a spring; 4. a limiting rod; 41. a vertical connecting rod; 42. a sliding connecting rod; 5. the upper part of the current transformer; 6. the lower part of the current transformer.
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.
Referring to fig. 1-4, the present invention provides the following technical solutions: a power grid harmonic pollution monitoring device comprises an upper clamping seat 1, a lower clamping seat 2, a current transformer upper part 5 and a current transformer lower part 6, wherein the current transformer upper part 5 and the current transformer lower part 6 are used for detecting cable data, the upper clamping seat 1 and the lower clamping seat 2 are hinged through a hinge 11, grooves are arranged below the upper clamping seat 1 and above the lower clamping seat 2, when the upper clamping seat 1 and the lower clamping seat 2 are closed, a cable groove 101 is formed between the upper clamping seat 1 and the lower clamping seat 2, a protruding part 12 is arranged on the inner side of one end, far away from the hinge 11, of the upper clamping seat 1, a clamping groove matched with the protruding part 12 is arranged on the lower clamping seat 2, the number of the upper clamping seat 1 and the number of the lower clamping seat 2 are two, the two clamping seats are respectively positioned on two sides of the current transformer upper part 5 and the current transformer lower part 6, a sliding groove 102 which is vertically arranged is arranged on the upper clamping seat 1 and the lower clamping seat 2, a sliding connecting rod 42 is connected in the sliding way 102, one end of the sliding connecting rod 42 is fixed on the current transformer upper part 5 or the current transformer lower part 6, the other end of the sliding connecting rod 42 is connected with a limiting rod 4, a sliding rod 32 is arranged in the middle of the limiting rod 4, an arc-shaped pressing plate 31 is arranged at the end of the sliding rod 32, limiting pieces 33 are fixed on the outer walls of the upper clamping seat 1 and the lower clamping seat 2, the sliding rod 32 penetrates through the arc-shaped pressing plate 31, and a spring 34 is arranged between the limiting pieces 33 and the arc-shaped pressing plate 31.
In this embodiment, the upper engaging seat 1 and the lower engaging seat 2 are hinged by a hinge 11, a groove is provided below the upper engaging seat 1 and above the lower engaging seat 2, when the upper engaging seat 1 and the lower engaging seat 2 are closed, a cable groove 101 is formed between the upper engaging seat 1 and the lower engaging seat 2, a protruding portion 12 is provided inside one end of the upper engaging seat 1 away from the hinge 11, a slot matched with the protruding portion 12 is provided on the lower engaging seat 2, when detection is performed, the upper engaging seat 1 and the lower engaging seat 2 are opened, the protruding portion 12 is engaged with an elastic card in the slot, the cable groove 101 is exposed by rotation of the hinge 11, a cable enters, the number of the upper engaging seat 1 and the lower engaging seat 2 is two, and the two engaging seats are respectively located on two sides of the current transformer upper portion 5 and the current transformer lower portion 6, so that the current transformer upper portion 5 and the current transformer lower portion 6 can be engaged with the outside of the cable, the upper clamping seat 1 and the lower clamping seat 2 are provided with a sliding groove 102 which is vertically arranged, a sliding connecting rod 42 is connected in the sliding groove 102 in a sliding manner, one end of the sliding connecting rod 42 is fixed on the upper part 5 or the lower part 6 of the current transformer, the other end of the sliding connecting rod 42 is connected with a limiting rod 4, a sliding rod 32 is arranged at the middle position of the limiting rod 4, the end part of the sliding rod 32 is provided with an arc-shaped pressing plate 31, the outer walls of the upper clamping seat 1 and the lower clamping seat 2 are both fixed with a limiting sheet 33, the sliding rod 32 penetrates through the arc-shaped pressing plate 31, a spring 34 is arranged between the limiting sheet 33 and the arc-shaped pressing plate 31, after the cable is pressed by the arc-shaped pressing plate 31, the arc-shaped pressing plate 31 is relatively fixed with the upper part 5 of the current transformer and the lower part 6 of the current transformer, namely, after the cable shakes, the upper part 5 of the current transformer and the lower part 6 of the current transformer shake along with the cable.
Specifically, the inner wall of arc pressfitting board 31 is equipped with contact site 311, and contact site 311 is the rubber material, and the inner wall of contact site 311 is equipped with a plurality of arch, increase and the cable between the connection stability.
Specifically, the sliding connecting rods 42 are fixedly connected with the limiting rod 4 through the vertical connecting rods 41, the number of the vertical connecting rods 41 is two, and the two vertical connecting rods 41 are fixed on one limiting rod 4, so that the reliability of the structures of the vertical connecting rods 41 and the limiting rod 4 is ensured.
Specifically, the sliding link 42 is a cylindrical rod, the outer wall of the sliding link 42 is smooth, and the inner wall of the sliding groove 102 is smooth, so that the sliding resistance of the sliding link 42 in the sliding process can be reduced.
Specifically, the limiting sheet 33 is annular, a sliding hole in sliding connection with the sliding rod 32 is formed in the inner wall of the limiting sheet 33, and the sliding rod 32 and the sliding hole are the same in diameter, so that the sliding stability can be guaranteed.
Specifically, the spring 34 is a compression spring, and the arc-shaped pressing plate 31 tends to move toward the center of the cable groove 101, so that the arc-shaped pressing plate 31 can press the cable.
Specifically, the slide bar 32 and the limiting rod 4 are detachably connected, a screw head is arranged at the end of the slide bar 32, a screw hole is formed in the limiting rod 4, and the slide bar 32 is in threaded connection with the limiting rod 4, so that the slide bar 32 is convenient to detach.
Specifically, screw holes are formed in the upper portion 5 of the current transformer and the lower portion 6 of the current transformer, a screw rod is arranged in the middle of the sliding connecting rod 42 and penetrates through the sliding rod 32 and is in threaded connection with the upper portion 5 of the current transformer or the lower portion 6 of the current transformer, and the upper portion 5 of the current transformer and the lower portion 6 of the current transformer are conveniently detached and replaced due to the structural design.
Specifically, the upper engaging seat 1 has a width of at least one centimeter, and is mounted on the fixed structure by using the upper engaging seat 1 or the lower engaging seat 2.
Specifically, arc laminated plate 31 is hard metal sheet material, prevents that arc laminated plate 31 from taking place to warp to guarantee the reliability of structure.
The working principle and the using process of the invention are as follows: the upper clamping seat 1 and the lower clamping seat 2 are hinged through a hinge 11, a cable groove 101 is formed between the upper clamping seat 1 and the lower clamping seat 2 when the upper clamping seat 1 and the lower clamping seat 2 are closed, a convex part 12 is arranged on the inner side of one end, away from the hinge 11, of the upper clamping seat 1, a clamping groove matched with the convex part 12 is formed in the lower clamping seat 2, when detection is carried out, the upper clamping seat 1 and the lower clamping seat 2 are opened, the convex part 12 is clamped with an elastic clamping piece in the clamping groove, the cable groove 101 is exposed through rotation of the hinge 11 to enable a cable to enter, the number of the upper clamping seat 1 and the lower clamping seat 2 is two, and the two clamping seats are respectively positioned on two sides of the upper part 5 of the current transformer and two sides of the lower part 6 of the current transformer, so that the upper part 5 of the current transformer and the lower part 6 of the current transformer can be clamped outside the cable, the upper clamping seat 1 and the lower clamping seat 2 are provided with a sliding groove 102 which is vertically arranged, a sliding connecting rod 42 is connected in the sliding groove 102 in a sliding manner, one end of the sliding connecting rod 42 is fixed on the upper part 5 or the lower part 6 of the current transformer, the other end of the sliding connecting rod 42 is connected with a limiting rod 4, a sliding rod 32 is arranged at the middle position of the limiting rod 4, the end part of the sliding rod 32 is provided with an arc-shaped pressing plate 31, the outer walls of the upper clamping seat 1 and the lower clamping seat 2 are both fixed with a limiting sheet 33, the sliding rod 32 penetrates through the arc-shaped pressing plate 31, a spring 34 is arranged between the limiting sheet 33 and the arc-shaped pressing plate 31, after the cable is pressed by the arc-shaped pressing plate 31, the arc-shaped pressing plate 31 is relatively fixed with the upper part 5 of the current transformer and the lower part 6 of the current transformer, namely, after the cable shakes, the upper part 5 of the current transformer and the lower part 6 of the current transformer shake along with the cable.
In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; 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 by those skilled in the art according to specific situations.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. Electric wire netting harmonic pollution monitoring devices, including last block seat (1) and lower block seat (2) and be used for detecting current transformer upper portion (5) and current transformer lower part (6) of cable data, its characterized in that: the upper clamping seat (1) and the lower clamping seat (2) are hinged through a hinge (11), grooves are formed below the upper clamping seat (1) and above the lower clamping seat (2), when the upper clamping seat (1) and the lower clamping seat (2) are closed, a cable groove (101) is formed between the upper clamping seat (1) and the lower clamping seat (2), a protruding portion (12) is arranged on the inner side of one end, far away from the hinge (11), of the upper clamping seat (1), a clamping groove matched with the protruding portion (12) is formed in the lower clamping seat (2), the number of the upper clamping seat (1) and the number of the lower clamping seat (2) are two, the two clamping seats are respectively located on two sides of the upper portion (5) and the lower portion (6) of the current transformer, vertically-arranged sliding grooves (102) are formed in the upper clamping seat (1) and the lower clamping seat (2), and a sliding connecting rod (42) is connected in the sliding groove (102), the one end of slip connecting rod (42) is fixed on current transformer upper portion (5) or current transformer lower part (6), slip connecting rod (42) are through vertical connecting rod (41) and gag lever post (4) fixed connection, the quantity of vertical connecting rod (41) is two, and two vertical connecting rod (41) are fixed one on gag lever post (4), the intermediate position department of gag lever post (4) is equipped with slide bar (32), the tip of slide bar (32) is equipped with arc pressfitting board (31), it all is fixed with spacing piece (33) on the outer wall of block seat (1) and lower block seat (2), slide bar (32) run through arc pressfitting board (31), spacing piece (33) with be equipped with spring (34) between arc pressfitting board (31).
2. The power grid harmonic pollution monitoring device of claim 1, wherein: the inner wall of arc pressfitting board (31) is equipped with contact site (311), contact site (311) are the rubber material, the inner wall of contact site (311) is equipped with a plurality of arch.
3. The power grid harmonic pollution monitoring device of claim 1, wherein: the sliding connecting rod (42) is cylindrical and rod-shaped, the outer wall of the sliding connecting rod (42) is smooth, and the inner wall of the sliding groove (102) is smooth.
4. The power grid harmonic pollution monitoring device of claim 1, wherein: the limiting piece (33) is annular, a sliding hole in sliding connection with the sliding rod (32) is formed in the inner wall of the limiting piece (33), and the sliding rod (32) and the sliding hole are the same in diameter.
5. The power grid harmonic pollution monitoring device of claim 1, wherein: the spring (34) is a compression spring, and the arc-shaped pressing plate (31) tends to move towards the center of the cable groove (101).
6. The power grid harmonic pollution monitoring device of claim 1, wherein: the slide bar (32) with can dismantle the connection between gag lever post (4), the tip of slide bar (32) is equipped with the spiral shell head, be equipped with the screw on gag lever post (4), slide bar (32) with gag lever post (4) threaded connection.
7. The power grid harmonic pollution monitoring device of claim 1, wherein: the novel transformer is characterized in that screw holes are formed in the upper portion (5) of the current transformer and the lower portion (6) of the current transformer, a screw rod is arranged in the middle of the sliding connecting rod (42) and penetrates through the sliding connecting rod (42), and the screw rod is in threaded connection with the upper portion (5) of the current transformer or the lower portion (6) of the current transformer.
8. The power grid harmonic pollution monitoring device of claim 1, wherein: the width of the upper clamping seat (1) is at least one centimeter.
9. The power grid harmonic pollution monitoring device of claim 1, wherein: the arc-shaped laminated plate (31) is a hard metal plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010432387.3A CN111551786B (en) | 2020-05-20 | 2020-05-20 | Harmonic pollution monitoring device for power grid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010432387.3A CN111551786B (en) | 2020-05-20 | 2020-05-20 | Harmonic pollution monitoring device for power grid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111551786A CN111551786A (en) | 2020-08-18 |
| CN111551786B true CN111551786B (en) | 2022-04-01 |
Family
ID=72001471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010432387.3A Active CN111551786B (en) | 2020-05-20 | 2020-05-20 | Harmonic pollution monitoring device for power grid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111551786B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112065156B (en) * | 2020-09-09 | 2021-10-26 | 国家电网有限公司 | Power equipment isolation net |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011061916A (en) * | 2009-09-08 | 2011-03-24 | Mine Service:Kk | Generation device using air conditioning equipment |
| CN106898467A (en) * | 2017-03-27 | 2017-06-27 | 国网山东省电力公司蓬莱市供电公司 | A kind of power transformation transformer group |
| CN206431203U (en) * | 2017-01-06 | 2017-08-22 | 中国石油化工股份有限公司 | A kind of Distribution Network Harmonics on-Line Monitor Device |
| CN207250306U (en) * | 2017-09-15 | 2018-04-17 | 江苏科瑞电气有限公司 | A kind of dust protected mutual inductor installs fixing shell |
| CN108649476A (en) * | 2018-07-25 | 2018-10-12 | 江西三龙电气有限公司 | A kind of high pressure solid insulation looped network switching system |
| CN208062664U (en) * | 2018-04-28 | 2018-11-06 | 广东电网有限责任公司 | A kind of stranded repair of ultra-high-tension power transmission line smoothes out with the fingers line apparatus |
| CN208421067U (en) * | 2018-05-24 | 2019-01-22 | 宁存岱 | A kind of cable harmonic wave on-Line Monitor Device |
| CN109585148A (en) * | 2018-12-05 | 2019-04-05 | 山东天健电气有限公司 | A kind of combined instrument transformer |
| CN210015776U (en) * | 2019-06-18 | 2020-02-04 | 国网湖北省电力有限公司荆门供电公司 | Adjustable split current transformer |
| CN110783818A (en) * | 2019-11-16 | 2020-02-11 | 王培� | Switch board with cable inlet wire finishing device just is convenient for dismouting mutual-inductor |
-
2020
- 2020-05-20 CN CN202010432387.3A patent/CN111551786B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011061916A (en) * | 2009-09-08 | 2011-03-24 | Mine Service:Kk | Generation device using air conditioning equipment |
| CN206431203U (en) * | 2017-01-06 | 2017-08-22 | 中国石油化工股份有限公司 | A kind of Distribution Network Harmonics on-Line Monitor Device |
| CN106898467A (en) * | 2017-03-27 | 2017-06-27 | 国网山东省电力公司蓬莱市供电公司 | A kind of power transformation transformer group |
| CN207250306U (en) * | 2017-09-15 | 2018-04-17 | 江苏科瑞电气有限公司 | A kind of dust protected mutual inductor installs fixing shell |
| CN208062664U (en) * | 2018-04-28 | 2018-11-06 | 广东电网有限责任公司 | A kind of stranded repair of ultra-high-tension power transmission line smoothes out with the fingers line apparatus |
| CN208421067U (en) * | 2018-05-24 | 2019-01-22 | 宁存岱 | A kind of cable harmonic wave on-Line Monitor Device |
| CN108649476A (en) * | 2018-07-25 | 2018-10-12 | 江西三龙电气有限公司 | A kind of high pressure solid insulation looped network switching system |
| CN109585148A (en) * | 2018-12-05 | 2019-04-05 | 山东天健电气有限公司 | A kind of combined instrument transformer |
| CN210015776U (en) * | 2019-06-18 | 2020-02-04 | 国网湖北省电力有限公司荆门供电公司 | Adjustable split current transformer |
| CN110783818A (en) * | 2019-11-16 | 2020-02-11 | 王培� | Switch board with cable inlet wire finishing device just is convenient for dismouting mutual-inductor |
Non-Patent Citations (1)
| Title |
|---|
| 110kV输电线路自动巡检机器人***的研究;周风余;《中国博士学位论文全文数据库 工程科技Ⅱ辑》;20090815;全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111551786A (en) | 2020-08-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111551786B (en) | Harmonic pollution monitoring device for power grid | |
| CN112904065B (en) | Electric energy meter capable of automatically cutting off power supply in case of abnormal power supply | |
| CN212255391U (en) | Current test terminal with automatic short connecting piece | |
| CN212587290U (en) | Anti-electricity-theft combined mutual inductor | |
| CN210985540U (en) | Loudspeaker junction box convenient to assemble | |
| CN209525376U (en) | A kind of having electric meter fault and remind and do not have a power failure and change the ammeter external device of table function | |
| CN210863956U (en) | PCBA testing arrangement | |
| CN207977286U (en) | The moving contact of breaker | |
| CN208874282U (en) | Intellectual computer harmonic elimination apparatus | |
| CN209402018U (en) | Battery management cabinet based on intermittent charge management system | |
| CN210985115U (en) | Safety control device of electric power test bed | |
| CN211182124U (en) | Internal electricity taking structure for miniature circuit breaker | |
| CN220872600U (en) | Distribution equipment fault monitoring device in electric power distribution network | |
| CN212483715U (en) | Electric power line wire rod electric heat performance detection device | |
| CN220383026U (en) | Photovoltaic box with wiring classification | |
| CN214898773U (en) | Battery module and battery pack | |
| CN220456536U (en) | Cylinder battery module protection shield fixed knot constructs | |
| CN217241120U (en) | Indoor environment regulation and control equipment cabinet between power equipment | |
| CN213461134U (en) | Surge protection device with waterproof function | |
| CN213937072U (en) | Rural electric network voltage of damage prevention promotes compensation arrangement | |
| CN215680942U (en) | Shielded antenna connector | |
| CN209542719U (en) | A kind of arrester on-line computing model being easily installed | |
| CN213401911U (en) | Automatic detection device for power distribution equipment | |
| CN211124273U (en) | Gas concentration alarm controller | |
| CN216484852U (en) | Indoor ammonia concentration detector convenient to maintain |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |