CN211127128U - Self-disengaging overvoltage absorption device for series reactor - Google Patents
Self-disengaging overvoltage absorption device for series reactor Download PDFInfo
- Publication number
- CN211127128U CN211127128U CN201922115604.1U CN201922115604U CN211127128U CN 211127128 U CN211127128 U CN 211127128U CN 201922115604 U CN201922115604 U CN 201922115604U CN 211127128 U CN211127128 U CN 211127128U
- Authority
- CN
- China
- Prior art keywords
- reactor
- overvoltage
- absorbing device
- counter
- self
- 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.)
- Expired - Fee Related
Links
- 238000010521 absorption reaction Methods 0.000 title description 15
- 239000006096 absorbing agent Substances 0.000 claims abstract description 15
- 239000002131 composite material Substances 0.000 claims abstract description 4
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 11
- 238000005260 corrosion Methods 0.000 claims description 3
- 239000011787 zinc oxide Substances 0.000 claims description 3
- 239000003990 capacitor Substances 0.000 abstract description 15
- 230000006378 damage Effects 0.000 abstract description 3
- 238000004880 explosion Methods 0.000 abstract description 2
- 208000027418 Wounds and injury Diseases 0.000 abstract 1
- 208000014674 injury Diseases 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 description 8
- 230000015556 catabolic process Effects 0.000 description 5
- 230000001012 protector Effects 0.000 description 4
- 238000009413 insulation Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Images
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model aims at providing a self-disengaging overvoltage absorbing device for series reactor, the parallel compensation capacitor bank is the reactive power used for compensating the system in the electric network, the electrical equipment used for improving the power factor, the series reactor is connected in series at the rear end of the capacitor, the electrical equipment used for limiting the switching-on surge current when the capacitor bank is switched, the overvoltage absorbing device comprises an overvoltage absorber and a counter, one end of the absorber is fixed at the lower surface of the cross bar at the upper end of the reactor, the other end of the absorber is connected with the counter of the cross bar at the lower end of the reactor through a lead, the amplitude when the overvoltage is operated is effectively limited, the capacitor bank and the series reactor are protected, and the quick fuse adopted simultaneously effectively prevents the capacitor from breaking down, the overvoltage absorbing device can be rapidly disengaged from the system, the composite insulating outer sleeve is used, even, and the explosion and the injury to surrounding personnel and equipment can not occur.
Description
Technical Field
The utility model relates to an electric power system overvoltage protection field mainly involves a self-disengaging formula overvoltage absorbing device for series reactor.
Background
With the rapid development of electric power in China, the reactive compensation of a power grid is more and more vigorous, particularly, a 10-35 KV system is required to be largely installed and used with a parallel compensation capacitor bank to compensate the reactive power of the system and improve the power factor, but accidents such as switch cabinet explosion, circuit breaker burnout, cable head breakdown, interelectrode breakdown and the like are easy to occur when the capacitor bank is switched, so that the great threat is formed to the safe and stable operation of the power grid, a great potential safety hazard is formed to the personal safety of related maintenance personnel, and the maintenance and replacement cost and the safety hazard degree are increased.
Therefore, in order to limit the voltage rise of a system and ensure the reliable operation of an electric power system, the self-disconnecting overvoltage absorption device for the series reactor is provided, the overvoltage absorption device of the reactor is improved, the voltage absorption device and the disconnecting unit are additionally arranged on the series reactor, the operation overvoltage generated in switching is limited in a series mode of the amplitude limiting unit and the self-disconnecting unit adopting an SC L P principle, meanwhile, the influence on personnel in capacitor breakdown can be effectively prevented by adopting a fast fuse and a composite insulating outer sleeve, and the personnel and equipment around can be effectively prevented from being injured, so that the problem to be solved by the technical personnel in the field is urgently needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a from disconnect-type overvoltage absorbing device for series reactor, the operation overvoltage that produces when the switching through the amplitude limiting unit that adopts SC L P principle and from the unit series connection mode of separating limits, amplitude when effectual restriction operation overvoltage, protection capacitor bank and series reactor, when the quick-operation fuse who adopts simultaneously punctures effectively preventing the condenser interelectrode, overvoltage absorbing device can break away from with the system rapidly, the use of compound insulating overcoat, even if the protector takes place thermal breakdown, can not blast yet, hinder and reach personnel and equipment around.
For solving the background art in technical problem, the utility model discloses a following technical scheme:
the utility model provides a from disconnect-type overvoltage absorbing device for series reactor, the series reactor is established ties in the condenser rear end for the electrical equipment of combined floodgate inrush current when limiting capacitance group switching, includes absorber and counter, and the horizontal pole lower surface of reactor upper end side is fixed to absorber one end, and the absorber other end passes through the wire and is connected with the counter of reactor lower extreme horizontal pole, the counter directly passes through the horizontal pole and is connected with the condenser of reactor lower extreme.
Preferably, the absorber includes fuse and absorption resistor, absorption resistor one end and fuse one end series connection, and the absorption resistor other end is connected with the horizontal pole of reactor upper end condenser side, and the fuse other end passes through the wire to be connected with the link of counter, through mutually supporting of counter and fuse, can carry out sensitive record to voltage absorbing device's action condition and leakage current to in time protect against worst accident, effectual improvement uses and the stationary degree when changing.
Preferably, be connected through locking connection device between the link of wire and counter, locking connection device includes lock nut and locking plate, the link at the counter center is fixed to the locking plate level, and lock nut passes the locking hole on the wire and is connected with the locking groove embedding on the locking plate, and through locking device's vertical fixation's lock nut, can effectually prevent the wire landing, improve the joint strength of link.
Preferably, the absorption resistor is a high-energy nonlinear zinc oxide valve plate type absorption resistor, so that the damage of high-frequency overvoltage to a reactor winding can be effectively solved on the premise of reducing the voltage rise, and a certain suppression effect on an overvoltage peak value with limited energy can be achieved.
Preferably, overvoltage absorption device outside is equipped with compound insulating cover, and the surface of the outside compound insulating cover of overvoltage absorption device is equipped with even scattered pressure edges and corners structure, through adopting compound insulating cover, can effectually protect operating personnel and equipment, even the protector takes place thermal collapse, can not explode yet, injures personnel and equipment around.
Preferably, the cross rod is provided with a uniform rubber insulating sleeve, the rubber insulating sleeve is provided with a frosted anti-corrosion layer, the service life of the rubber insulating sleeve can be effectively prolonged, and the safety strength of the reactor in use is improved.
The utility model has the advantages that:
1) the operation overvoltage generated during switching is limited by the serial connection mode of the amplitude limiting unit and the self-disengaging unit which adopt the SC L P principle, so that the amplitude during the operation overvoltage is effectively limited, and a capacitor bank and a series reactor are protected.
2) Adopt quick-acting fuse and with compound insulating overcoat can effectually prevent to influence to personnel when condenser punctures and protector thermal breakdown, in time break off and protection to effectively avoid hindering personnel and equipment around
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to these drawings.
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a circuit connection structure diagram of the present invention.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be described in further detail below.
Referring to fig. 1-2, a self-disengaging overvoltage absorbing device for a series reactor comprises a reactor 5, wherein the reactor 5 is an electrical device connected in series with a parallel capacitor belonging to a parallel compensation capacitor bank and used for compensating reactive power of a system in a power grid, and the electrical device used for improving a power factor comprises an absorber 2 and a counter 8, one end of the absorber 2 is fixed on the lower surface of a cross rod 4 on the side of a capacitor 6 on the upper end of the reactor 5, the other end of the absorber 2 is connected with the counter 8 on the side of the cross rod 4 on the side of the capacitor 6 on the lower end of the reactor 5 through a lead 1, and the counter 8 is directly connected with the capacitor 6 on the lower end of the reactor 5 through the.
In this embodiment, absorber 2 includes fuse R0 and absorption resistance Zn0, absorption resistance Zn0 one end and fuse R0 one end series connection, the absorption resistance Zn0 other end is connected with the horizontal pole 4 of 5 upper end condenser 6 sides of reactor, the fuse R0 other end passes through wire 1 and is connected with the link of counter 8, mutually support through counter 8 and fuse R0, can carry out sensitive record to voltage absorbing device's action condition and leakage current, and in time protect worst accident, the effectual stability that improves when using and changing.
In this embodiment, be connected through locking connection device between the link of wire 1 and counter 8, locking connection device includes lock nut 9 and locking plate 10, the link at counter 8 center is fixed to locking plate 10 level, and lock nut 9 passes the locking hole on the wire 1 and is connected with the locking groove embedding on the locking plate 10, and through locking device's vertical fixation's lock nut 9, can effectually prevent that wire 1 from slipping, improves the joint strength of link.
In this embodiment, the absorbing resistor Zn0 adopts a high-energy nonlinear zinc oxide valve-type absorbing resistor Zn0, which can slow down the rising front of voltage, effectively solve the problem of damage of high-frequency overvoltage to the winding of the reactor 5, and can achieve a better suppression effect on the overvoltage peak with limited energy.
In this embodiment, overvoltage absorbing device outside is equipped with compound insulating cover 3, and the surface of the outside compound insulating cover 3 of overvoltage absorbing device is equipped with even scattered pressure edges and corners structure, through adopting compound insulating cover 3, can effectually protect operating personnel and equipment, even the protector takes place thermal collapse, can not explode yet, injures personnel and equipment around.
In this embodiment, be equipped with even rubber insulation cover on horizontal pole 4, be equipped with dull polish anti-corrosion coating on the rubber insulation cover, the life of rubber insulation cover can effectual extension, the safe strength when improving reactor 5 and using.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the present invention. Accordingly, the foregoing description is illustrative in nature and is not to be construed as limiting the scope of the invention, which is defined by the appended claims.
Claims (6)
1. The utility model provides a from disconnect-type overvoltage absorbing device for series reactor, the series reactor is established ties in condenser rear end for the electrical equipment of switching-on inrush current when limiting capacitance group switching, its characterized in that includes absorber and counter, and absorber one end is fixed in the horizontal pole lower surface of reactor upper end side, and the absorber other end passes through the wire and is connected with the counter of reactor lower extreme horizontal pole, the counter directly passes through the horizontal pole and is connected with the condenser of reactor lower extreme.
2. The self-disengaging overvoltage absorbing device for the series reactor according to claim 1, wherein said absorber includes a fuse and an absorbing resistor, one end of said absorbing resistor is connected in series with one end of said fuse, the other end of said absorbing resistor is connected with a cross bar on the side of the upper end of said reactor, and the other end of said fuse is connected with the connecting end of said counter through a wire.
3. The self-release overvoltage absorbing device for the series reactor as claimed in claim 2, wherein the wire is connected to the connection end of the counter by a locking connection means, the locking connection means comprises a locking nut and a locking plate, the locking plate is horizontally fixed to the connection end of the center of the counter, and the locking nut is inserted into and connected to the locking groove of the locking plate through a locking hole of the wire.
4. The self-release overvoltage absorbing device for the series reactor according to claim 2, wherein the absorbing resistor is a high-energy nonlinear zinc oxide valve type absorbing resistor.
5. The self-release overvoltage absorbing device for the series reactor as claimed in claim 2, wherein the overvoltage absorbing device is externally provided with a composite insulating outer sleeve, and the outer surface of the composite insulating outer sleeve outside the overvoltage absorbing device is provided with a uniform pressure-dispersing corner structure.
6. The self-disengaging overvoltage absorbing device for a series reactor as claimed in claim 1, wherein said rail is provided with a uniform rubber insulating sleeve, said rubber insulating sleeve being provided with a frosted anti-corrosion layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922115604.1U CN211127128U (en) | 2019-11-29 | 2019-11-29 | Self-disengaging overvoltage absorption device for series reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922115604.1U CN211127128U (en) | 2019-11-29 | 2019-11-29 | Self-disengaging overvoltage absorption device for series reactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211127128U true CN211127128U (en) | 2020-07-28 |
Family
ID=71700559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922115604.1U Expired - Fee Related CN211127128U (en) | 2019-11-29 | 2019-11-29 | Self-disengaging overvoltage absorption device for series reactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211127128U (en) |
-
2019
- 2019-11-29 CN CN201922115604.1U patent/CN211127128U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104767194B (en) | A kind of high voltage power transmission current conversion station over-pressure safety device | |
| CN211127128U (en) | Self-disengaging overvoltage absorption device for series reactor | |
| CN205282328U (en) | Prevent blocking device of transformer operation back brake maloperation | |
| CN102290805A (en) | Electric arc grounding overvoltage limiting device applied to medium-voltage distribution system | |
| CN208401544U (en) | A kind of over-voltage protector of energy-absorbing cumulative | |
| CN108615607B (en) | Insulator fuse type high voltage-resistant capacitor | |
| CN208738836U (en) | A kind of self-disengaging overvoltage absorbing device for shunt reactor | |
| CN204517400U (en) | The external interstitial structure zinc oxide arrester of low residual voltage | |
| CN109524187A (en) | A kind of arrester and integrated circuit with front-end protection circuit | |
| CN104377679A (en) | Secondary direct-current resonance elimination device used for electromagnetic type voltage transformer | |
| CN213341639U (en) | Super overvoltage protector | |
| CN201887444U (en) | Electric grounding comprehensive protector for TXHPT | |
| CN204517398U (en) | Low residual voltage zinc oxide arrester | |
| CN201388042Y (en) | Central high-voltage switch equal-height cabinet | |
| CN108806905B (en) | Valve type lightning arrester with arc extinguishing function | |
| CN107045077A (en) | The automatic lightning strike information arrester of transmission and distribution networkses | |
| CN207442184U (en) | Low residual voltage, deterioration visible fixed external series gap arrester | |
| CN214044975U (en) | Arrester support with safety protection structure | |
| CN104810817A (en) | Low residual voltage zinc oxide arrester | |
| CN105223479B (en) | A kind of extra-high voltage GIS testing on-site impact transient overvoltage suppressing method | |
| CN204517399U (en) | Low residual voltage interstitial structure zinc oxide arrester arranged side by side | |
| CN204179655U (en) | For the secondary direct current harmonic elimination apparatus of electromagnetic potential transformer | |
| CN211046477U (en) | Intelligent controllable overvoltage protection device for neutral point of 110kV transformer | |
| CN103368165A (en) | Arc elimination and harmonic elimination and overvoltage protector | |
| CN102709899A (en) | Intelligent arc extinction and resonance extinction overvoltage protection integral optimization device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200728 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |