CN106918779A - Primary cut-out switching-on resistance thermal capacity experimental rig - Google Patents
Primary cut-out switching-on resistance thermal capacity experimental rig Download PDFInfo
- Publication number
- CN106918779A CN106918779A CN201710074420.8A CN201710074420A CN106918779A CN 106918779 A CN106918779 A CN 106918779A CN 201710074420 A CN201710074420 A CN 201710074420A CN 106918779 A CN106918779 A CN 106918779A
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- resistance
- conductive
- experimental rig
- switching
- end cover
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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
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/3271—Testing of circuit interrupters, switches or circuit-breakers of high voltage or medium voltage devices
- G01R31/3272—Apparatus, systems or circuits therefor
- G01R31/3274—Details related to measuring, e.g. sensing, displaying or computing; Measuring of variables related to the contact pieces, e.g. wear, position or resistance
Abstract
The present invention relates to primary cut-out switching-on resistance thermal capacity experimental rig, the experimental rig includes insulating cylinder, the axial direction of insulating cylinder is respectively arranged at two ends with first, two end covers, the resistor cartridge for installing switching-on resistance is provided with the inside of first end cover, the bottom of resistor cartridge is provided with the resistance connecting seat for crimping and being conductively connected for the end face of switching-on resistance, the top of resistor cartridge is removable to be fixed with conductive contact, experimental rig is also included for being supported on conductive contact and switching-on resistance between the two with the conductive support of both axial spacing of compensation, second end cover inner side is provided with the conductive seat that conducting is turned on or crimped with conductive contact grafting；The axial direction of insulating cylinder is respectively arranged at two ends with first and second binding post being conductively connected with the resistance connecting seat and conductive seat.Above-mentioned experimental rig adaptability is good, and different experimental rigs are separately designed without for the different switching-on resistance of different voltage class or size, can effective reduces cost, it is easy to use.
Description
Technical field
The present invention relates to primary cut-out switching-on resistance thermal capacity experimental rig.
Background technology
In power system, the switching overvoltage that species is various, characteristic is different is there is, breaker operator is most of behaviour
Make the cause of overvoltage.In supergrid, with the raising and the installing of arrester of breaker arc extinguishing ability, ceases to be busy mistake is closed
Voltage turns into main switching overvoltage.Particularly the nonloaded line of the extra high voltage network of long range closes a floodgate, and overvoltage is more
Plus it is serious.In power system, it is common operation that circuit closes a floodgate, and ceases to be busy overvoltage is closed in order to limit, in the superelevation of long range
It is a kind of major measure that the switching-on resistance in parallel with breaker is set in pressure transmission line, and at a time putting into switching-on resistance will
Part electric energy is converted into heat energy, can reach weakening electromagnetic viscosimeter, the purpose of over-voltage, typically requires that switching-on resistance shifts to an earlier date
8 ~ 11ms is connected with energy absorption.Existing switching-on resistance such as publication No. is disclosed for the Chinese invention patent of the A of CN 102723154
Resistance, including the resistor cartridge formed by insulating bar, insulating bar be sequentially coaxially arranged for the resistor disc with central hole and
Form resistance string, the axial two ends of insulating bar are arranged with connecting seat respectively, connecting seat is by the bearing pin that is radially arranged along insulating bar
It is fixed on insulating bar.Because resistor disc is more crisp, in order to prevent resistor disc from being weighed wounded, one of connecting seat and neighbouring resistance
Stage clip is additionally provided between piece.
Switching-on resistance needs to carry out thermal capacity experiment, and the generally experiment is directly to be installed to the whole pole of switching-on resistance
Carried out on breaker, the general requirement of code test is that the thermal capacity of switching-on resistance should be at least met under 2 times of specified phase voltages
Closed a floodgate twice experiment, time interval is 30min.For conventional 550kV breakers, experiment station disclosure satisfy that capacity
It is required that, but with the continuous lifting of power network development level, the demand to high voltage, Large Copacity grid equipment is also constantly being carried
Rise, SF6 circuit breaker voltage grades have been promoted to 1100kV voltage class, the breaker higher for these voltage class, due to
The limitation of experiment station's experimental condition cannot apply full voltage and tested, if improving capacity to testing equipment upgrading
Huge cost will be needed.
In April, 2015《Henan science and technology》On deliver《The research of 550kV breaker closing resistance thermal capacity》Middle offer
A kind of standard compliant alternate test method, is tested using the method for drop voltage, reduced resistance.In view of the convenience of experiment
Property, switching-on resistance to be tested does not reinstall circuit breaker internal and is tested with breaker, but uses one section of bus casing conduct
Insulating cylinder, bus casing inside loads switching-on resistance to be tested, is fastened with aluminium conductor, connected, and one end of bus housing connects
Bushing is connect, by bushing applied voltage, electric current, resistance heat capacity test is realized.But, said apparatus structure is answered
Miscellaneous, volume is larger, it is often more important that, different tests condition needs the piece number of the switching-on resistance piece for using different, switching-on resistance
Axial dimension can also change, and this is accomplished by designing different experimental rigs for the switching-on resistance of various sizes, equally needs
Cost that will be higher, and in-convenience in use.
The content of the invention
It is an object of the invention to provide a kind of primary cut-out switching-on resistance thermal capacity experimental rig, to solve existing examination
Experiment device high cost, awkward problem.
To achieve the above object, the technical scheme that uses is in the present invention：Primary cut-out switching-on resistance thermal capacity is tested
Device, including insulating cylinder, the axial direction of the insulating cylinder are respectively arranged at two ends with first and second end cover, the first end cover it is interior
Side is provided with the resistor cartridge for installing switching-on resistance, and the bottom of resistor cartridge is provided with for the end face crimping of switching-on resistance and conduction
The resistance connecting seat of connection, the top of resistor cartridge is removable to be fixed with conductive contact, and experimental rig also includes being used to be supported on to lead
, between the two to compensate the conductive support of both axial spacing, the second end cover inner side is provided with for electric connection and switching-on resistance
The conductive seat of conducting is turned on or crimped with conductive contact grafting；The axial direction of insulating cylinder is respectively arranged at two ends with and the resistance connecting seat
First and second binding post being conductively connected with conductive seat.
The conductive support is conductive tube, the experimental rig also include for be folded in conductive tube and switching-on resistance it
Between and the conductive positioning seat between conductive tube and conductive contact, one end that the conductive positioning seats against nearly conductive tube is provided with positioning
Boss, the internal face of the conductive tube and the outer peripheral face location fit of positioning boss.
Adjusting gasket is provided between the conductive contact and conductive positioning seat adjacent thereto.
The insulated column being sequentially coaxially arranged for the resistor disc with central hole is provided with the inside of first end cover, it is described
Insulated column constitutes the resistor cartridge.
The conductive contact is tubular structure, and its axial one end has bottom wall, and the bottom wall is provided with and is passed through for insulated column
Through hole, the part that the insulated column penetrates conductive contact is provided with external screw thread, is provided with the tubular structure and the external screw thread
The compact heap of cooperation, the removable top for being fixed on insulated column of compression that the conductive contact passes through compact heap.
The conductive seat is provided in coordinating for one end grafting with tubular structure away from bottom wall on the inside of the second end cap
Inserting column.
Elastic supporting member for supporting optical member is provided between the compact heap and the bottom wall of conductive contact.
First end cover is made up of metallic conductor, and the resistance connecting seat is by first end cover this figure
Into.
Second end cover is made up of metallic conductor, and the conductive seat is formed in itself by the second end cover.
Second end cover is provided with gas-charging connection.
Beneficial effect：The present invention uses above-mentioned technical proposal, and the switching-on resistance being installed on resistor cartridge can be with first
Resistance connecting seat on the inside of end cover is conductively connected, and the conductive contact of removable setting be able to will be closed a floodgate by conductive support
Resistance is pressed on resistance connecting seat, for conductive contact and switching-on resistance caused by the switching-on resistance due to axially different size
Between the change of axial spacing, it is only necessary to pull down conductive contact, and be to be capable of achieving using the conductive support of corresponding axial dimension
Spacing, then first and second wiring by being connected with resistance connecting seat and with the conductive seat that conductive contact is conductively connected respectively
Terminal can realize leading in/out for test voltage and electric current, and then realize that thermal capacity is tested, it is not necessary to adjust conductive seat
Position, adaptability is good compared with prior art, is set respectively without for the different switching-on resistance of different voltage class or size
The different experimental rigs of meter, can effective reduces cost, it is easy to use.
Brief description of the drawings
When Fig. 1 is one embodiment use state of mesohigh breaker closing resistance heat Capacity tester of the present invention
Partial structural diagram.
Each reference is corresponding entitled in figure：1- insulating cylinders, the end covers of 2- first, 3- first boss, 4- second
End cover, 5- gas-charging connections, 6- insulated columns, 7- resistor discs, 8- conductive supports, 9- conductive contacts, 10- compact heaps, 11- dish
Spring, 12- conduction positioning seats, 13- positioning boss, 14- elasticity fingertips, 15- second boss, the binding posts of 16- first, 17- second
Binding post.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.
One embodiment of primary cut-out switching-on resistance thermal capacity experimental rig of the present invention is as shown in figure 1, be used for
The switching-on resistance thermal capacity experiment of 1100kV breakers, including insulating cylinder 1, the axial two ends of insulating cylinder 1 respectively by flange and
Bolt assembly is fixedly connected with the first end cover 2 and the second end cover 4, and the first end cover 2 and the second end cover 4 are equal
It is made up of metallic conductor, the end cover 2 of insulating cylinder 1 and first and the second end cover 4 surround closed air chamber jointly, are used for
It is filled with sulfur hexafluoride gas and realizes insulation.Second end cover 4 is provided with gas-charging connection 5, is easy to inflation.First end cover 2
Easy to loading and unloading, simple structure is connected using flange with the second end cover 4, connection is reliable.
The inner side of the first end cover 2 is provided with first boss 3, and the center of first boss 3 is provided with mounting hole, and insulated column 6 is fixed
It is plugged in mounting hole, the resistor disc 7 with central hole can be sequentially coaxially set on insulated column 6, and formation is connected in series.
After 7 sets of resistor disc is set on insulated column 6, the resistor disc 7 of bottommost is crimped on the top end face of first boss 3 and convex with first
Platform 3 is conductively connected, and first boss 3 forms resistance connecting seat.
Experimental rig is also included for being set in conductive support 8 He of the insulated column 6 away from one end of the first end cover 2
Removable to be fixed on the top of insulated column 6 so that conductive support 8 to be pressed to the conductive contact 9 on resistor disc 7, conductive support 8 is used
In being supported on conductive contact 9 and switching-on resistance between the two to compensate both axial spacing, so that the resistance for cutting is substituted,
While resistor disc needed for maintaining experiment is compacted, the effect of being conductively connected is played.Conductive contact 9 is that axial one end has bottom wall
Tubular structure, bottom wall is provided with the through hole passed through for insulated column 6, and the part that insulated column 6 penetrates conductive contact 9 is provided with outer spiral shell
Line, is provided with the compact heap 10 coordinated with external screw thread in tubular structure, conductive contact 9 is fixed on by the way that the compression of compact heap 10 is removable
The top of insulated column 6.Compact heap 10 is provided with for the clamping of twisting instrument with the clamping plane of transmitting torque, and type of action is in nut.
In order to ensure the reliable conductive of conductive contact 9 and conductive support, disc spring is provided between compact heap 10 and the bottom wall of conductive contact 9
11, disc spring 11 forms elastic supporting member for supporting optical member.In other embodiments, elastic supporting member for supporting optical member can also replace with other forms, such as spiral shell
Rotation spring, elastic washer etc., it is also possible to be not provided with elastic supporting member for supporting optical member.Experimental rig also includes being folded in conductive support 8 with electricity
Conductive positioning seat 12 and conductive support 8 and conductive contact 9 between resistance piece 7, conductive positioning seat 12 is towards conductive supporting
The side of body 8 is provided with positioning boss 13, the internal face of conductive support 8 and the outer peripheral face location fit of boss.Positioning is set
Boss 13 can avoid conductive support 8 from inclining, so as to ensure between the transmission of thrust and conductive support 8 and resistor disc 7
Good conducting.Also adjusting gasket, Neng Goushi are provided between conductive support 8 and conductive contact 9 in the top of conductive positioning seat 12
The fine setting of existing axial dimension.
Conductive contact 9 is provided with annular groove away from one end inwall of bottom wall, and elastic fingertip 14 is provided with annular groove, correspondingly, the
The medial surface of two end covers 4 is provided with second boss 15, and second boss 15 forms inserting column, its outer peripheral face and conductive contact 9
Grafting coordinates, so as to realize being conductively connected with conductive contact 9.In other embodiments, conductive contact 9 can also with conductive seat
Realize being conductively connected using other forms, for example, crimp conduction, crimping conduction is a kind of conventional conduction mode in switchgear,
Conduction mode for example in vacuum interrupter between moving contact and static contact.But, because crimping conduction generally requires to use bullet
Property the form that compresses come, it is contemplated that the assembling of the first end cover 2 and the second end cover 4, it is preferred to use the conductive knot of grafting
Structure.
The outside of the first end cover 2 is additionally provided with the first binding post 16 being conductively connected with the crimping seat of resistor disc 7, first
Binding post 16 is the first terminal plate for being fixed on the center of the first end cover 2, and the first terminal plate is provided with threaded connection hole, is used
In the inlet wire of joint test electric current at the trial.The marginal portion of the second end cover 4 is provided with threaded connection hole, forms second and connects
Line terminals 17, for the loop line of joint test electric current at the trial.In other embodiments, the first binding post 16 and second connects
Line terminals 17 may be replaced by other forms, can realize the conducting with inlet wire and loop line.
During experiment, the flange bolt between the first end cover 2 and insulating cylinder 1 can be pulled down, by insulated column 6 from
Taken out in insulating cylinder 1, because the conductive seat on the end cover 4 of conductive contact 9 and second on insulated column 6 is conductive grafting, because
Both can be easily separated for this, easy to operate.Appropriate number of resistor disc 7 is arranged on insulating bar, resistance value is met
The requirement of thermal capacity experiment, then loads onto the conductive positioning seat 12 of bottom, selects the conductive support 8 of appropriate length and installs top
, then be set to conductive contact 9 on insulated column 6 by the conductive positioning seat 12 in portion, tightens compact heap 10, will finally assemble combined floodgate electricity
The insulated column 6 of resistance loads insulating cylinder 1, makes the conductive seat on the end cover 4 of conductive contact 9 and second at the top of insulated column 6 conductive
Grafting, loads onto the flange bolt between the second end cover 4 and insulating cylinder 1, can be carried out after gas-charging connection 5 is inflated
Experiment.In order to ensure the reliable conducting of conductive contact 9 and conductive seat, can suitably increase both inserting depths.
In the above-described embodiments, resistor cartridge is the insulated column being sequentially coaxially arranged for the resistor disc with central hole,
Conductive contact is fixed on insulated column by with the compact heap that insulation male screw coordinates is removable.In other embodiments, resistance
Support can also replace with other forms, the insulated tension pole being for example distributed on around switching-on resistance or the cylinder being made up of insulating materials
Shape structure, and conductive contact can by other means with the removable fixation of resistor cartridge, flange is for example set on conductive contact
Structure, insulated tension pole is realized through flange arrangement to fix, and external screw thread is set on the outer peripheral face of conductive contact for another example, by spiral shell
Line is affixed on the resistor cartridge of tubular structure, sets the internal thread coordinated with insulated column on conductive contact for another example, directly
Connect to be connected through a screw thread and be fixed on insulated column, the top end face in insulated column is threaded hole for another example, by bolt by conduction
Joint is fixed on insulated column.
In the above-described embodiments, the first end cover 2 and the second end cover 4 are made by metallic conductor, easy to process,
Compact conformation, low cost, in other embodiments of the invention, the first end cover 2 and the second end cover 4 can also be replaced
It is other forms, such as disc insulator with center conductor, the insulated end cover that insulating materials is made for another example, now first is close
The conductive seat on resistance connecting seat and the second end cover 4 on end-blocking lid 2 can be with separately fabricated and be assembled to by fastener
On corresponding end cover, resistance connecting seat and conductive seat can lead to outside terminals by the other electric-conductor for setting
Son.
Claims (10)
1. primary cut-out switching-on resistance thermal capacity experimental rig, including insulating cylinder, it is characterised in that：The axial direction of the insulating cylinder
First and second end cover is respectively arranged at two ends with, the resistor cartridge for installing switching-on resistance is provided with the inside of the first end cover,
The bottom of resistor cartridge is provided with the resistance connecting seat for crimping and being conductively connected for the end face of switching-on resistance, and the top of resistor cartridge can
Tear open and be fixed with conductive contact, experimental rig is also included for being supported on conductive contact and switching-on resistance between the two to compensate both
Axial spacing conductive support, the second end cover inner side be provided with conductive contact grafting turn on or crimp turn on conduction
Seat；The axial direction of insulating cylinder is respectively arranged at two ends with first and second binding post being conductively connected with the resistance connecting seat and conductive seat.
2. primary cut-out switching-on resistance thermal capacity experimental rig according to claim 1, it is characterised in that：The conduction
Supporter is conductive tube, the experimental rig also include for be folded between conductive tube and switching-on resistance and conductive tube with lead
Conductive positioning seat between electric connection, one end that the conductive positioning seats against nearly conductive tube is provided with positioning boss, the conductive tube
Internal face and positioning boss outer peripheral face location fit.
3. primary cut-out switching-on resistance thermal capacity experimental rig according to claim 2, it is characterised in that：The conduction
Adjusting gasket is provided between joint and conductive positioning seat adjacent thereto.
4. the primary cut-out switching-on resistance thermal capacity experimental rig according to claim 1 or 2 or 3, it is characterised in that：The
The insulated column being sequentially coaxially arranged for the resistor disc with central hole is provided with the inside of one end cover, the insulated column is constituted
The resistor cartridge.
5. primary cut-out switching-on resistance thermal capacity experimental rig according to claim 4, it is characterised in that：The conduction
Joint is tubular structure, and its axial one end has bottom wall, and the bottom wall is provided with the through hole passed through for insulated column, the insulated column
The part for penetrating conductive contact is provided with external screw thread, and the compact heap coordinated with the external screw thread is provided with the tubular structure, described
The removable top for being fixed on insulated column of compression that conductive contact passes through compact heap.
6. primary cut-out switching-on resistance thermal capacity experimental rig according to claim 5, it is characterised in that：The conduction
Seat be provided on the inside of the second end cap for the inserting column that coordinates away from one end grafting of bottom wall with tubular structure.
7. primary cut-out switching-on resistance thermal capacity experimental rig according to claim 5, it is characterised in that：The compression
Elastic supporting member for supporting optical member is provided between block and the bottom wall of conductive contact.
8. the primary cut-out switching-on resistance thermal capacity experimental rig according to claim 1 or 2 or 3, it is characterised in that：Institute
State the first end cover to be made up of metallic conductor, the resistance connecting seat is formed in itself by the first end cover.
9. the primary cut-out switching-on resistance thermal capacity experimental rig according to claim 1 or 2 or 3, it is characterised in that：Institute
State the second end cover to be made up of metallic conductor, the conductive seat is formed in itself by the second end cover.
10. the primary cut-out switching-on resistance thermal capacity experimental rig according to claim 1 or 2 or 3, it is characterised in that：
Second end cover is provided with gas-charging connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710074420.8A CN106918779B (en) | 2017-02-10 | 2017-02-10 | High voltage circuit breaker closing resistance heat Capacity tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710074420.8A CN106918779B (en) | 2017-02-10 | 2017-02-10 | High voltage circuit breaker closing resistance heat Capacity tester |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106918779A true CN106918779A (en) | 2017-07-04 |
| CN106918779B CN106918779B (en) | 2019-11-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710074420.8A Active CN106918779B (en) | 2017-02-10 | 2017-02-10 | High voltage circuit breaker closing resistance heat Capacity tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106918779B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4539987A (en) * | 1980-02-27 | 1985-09-10 | Nath Guenther | Apparatus for coagulation by heat radiation |
| CN85108559A (en) * | 1985-10-31 | 1987-05-06 | 同济大学 | Measure the water calorimeter of liquid, solid specific heat |
| CN102723154A (en) * | 2012-06-20 | 2012-10-10 | 河南平高电气股份有限公司 | Resistor |
| CN104766682A (en) * | 2014-11-17 | 2015-07-08 | 平高集团有限公司 | High voltage damping resistor and high voltage transmission system using the resistor |
-
2017
- 2017-02-10 CN CN201710074420.8A patent/CN106918779B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4539987A (en) * | 1980-02-27 | 1985-09-10 | Nath Guenther | Apparatus for coagulation by heat radiation |
| CN85108559A (en) * | 1985-10-31 | 1987-05-06 | 同济大学 | Measure the water calorimeter of liquid, solid specific heat |
| CN102723154A (en) * | 2012-06-20 | 2012-10-10 | 河南平高电气股份有限公司 | Resistor |
| CN104766682A (en) * | 2014-11-17 | 2015-07-08 | 平高集团有限公司 | High voltage damping resistor and high voltage transmission system using the resistor |
Non-Patent Citations (1)
| Title |
|---|
| 李松磊等: "550kV断路器合闸电阻热容量的研究", <<河南科技>> * |
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| Publication number | Publication date |
|---|---|
| CN106918779B (en) | 2019-11-08 |
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