CN108832602B - A kind of MV grades of pulse gas switch triggering cable protection method and protective device - Google Patents
A kind of MV grades of pulse gas switch triggering cable protection method and protective device Download PDFInfo
- Publication number
- CN108832602B CN108832602B CN201810613884.6A CN201810613884A CN108832602B CN 108832602 B CN108832602 B CN 108832602B CN 201810613884 A CN201810613884 A CN 201810613884A CN 108832602 B CN108832602 B CN 108832602B
- Authority
- CN
- China
- Prior art keywords
- electrode
- cable
- pulse
- grades
- ground connection
- 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
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/22—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systems; for switching devices
- H02H7/228—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systems; for switching devices for covered wires or cables
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/005—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection avoiding undesired transient conditions
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
- H02H9/045—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage adapted to a particular application and not provided for elsewhere
Abstract
The present invention relates to a kind of MV grades of pulse gas switch triggering cable protection method and protective device, core is the earth protective switch between triggering cable and triggering isolation resistance, and ground protection switch uses the electronegative gas gap of pole non-uniform field configuration；Using the polar effect of the electronegative gas gap pulse breakdown of pole non-uniform field configuration, in the case where MV grades of pulse gas switch triggered as normal, it is grounded trigger pulse after effective introduce；Or in the case where self breakdown occurs for MV grades of pulse gas switches; MV grades of pulse gas are switched into born pulse voltages ground connection to realize the protection to triggering cable, solves the problems, such as in MV grade pulse gas switch breakdown process that high voltage pulse is coupled to and triggers cable and make its insulation breakdown.
Description
Technical field
The present invention is suitable for technical field of pulse power, is related to a kind of MV grades of pulse gas switch triggering cable protection method
And protective device.
Background technique
MV grades of pulse gas switches are the core components for guaranteeing device and working normally in large-scale pulse power device.MV grades
Pulse gas switch is fixed on the transmission line inner cylinder of device, operating voltage number MV, through-flow hundreds of kA.It is triggered when using electric pulse
When, inductance is isolated by triggering cable, triggering isolation resistance and triggering between triggering system and MV grades of pulse gas switches and is realized
Connection.In order to obtain preferable switch triggering performance, the value that inductance is isolated in triggering isolation resistance and triggering should not often be selected
Greatly.In MV grades of pulse gas switch breakdown process, trigger electrode is in the transient high voltages of number MV, by triggering isolation resistance
After triggering isolation inductance partial pressure, the pulse high-voltage of hundreds of kV is coupled on triggering cable, to triggering cable and triggering
The insulation of device causes high risks.
What usually MV grades of pulse gas switches were coupled into cable is negative pulse high pressure, and coupled pulse voltage enters cable
Afterwards, multiple reflections occur in the cable, pulse polarity occurs repeatedly to overturn in the cable.When trigger pulse and coupled pulse voltage
For that can cancel out each other when opposite polarity high-voltage pulse, this is advantageous cable insulation；When trigger pulse and coupled pulse electricity
When pressing polarity identical, high-voltage pulse is overlapped mutually, this is unfavorable to cable insulation；When MV grades of pulse gas switches occur to hit certainly
Wear, and trigger system it is not operating when, coupled pulse voltage can make triggering system output close the switch, be coupled into the arteries and veins of cable at this time
Punching is just reflected, and voltage overturning is identical as trigger pulse polarity, and superposition output causes cable insulation to be damaged.
Summary of the invention
In order to avoid coupled pulse voltage is to triggering cable detrimental effect, the present invention provides a kind of MV grades of pulse gas and opens
Close triggering cable protection method and protective device.
The technical solution of the invention is as follows:
A kind of MV grades of pulse gas switch triggering cable protection method, is characterized in that, comprising the following steps:
1) the earth protective switch between triggering cable 9 and triggering isolation resistance 14, ground protection switch use pole
The electronegative gas gap of non-uniform field configuration；
2) parameter of regulated ground protective switch, so that:
In the case where MV grades of pulse gas switch is triggered as normal, ground protection switch can be triggered pulse breakdown and
Breakdown time delay is greater than the breakdown time delay of MV grades of pulse gas switch, the electronegativity gas of pole non-uniform field configuration when trigger pulse introduces
Body space is in an off state, and trigger pulse can normally introduce MV grades of pulse gas switches；MV grades of pulse gas switch conductions
After closure, trigger pulse is grounded the electronegative gas gap breakdown of pole non-uniform field configuration；
In the case where self breakdown occurs for MV grades of pulse gas switches, MV grades of pulse gas switch born pulse voltage
It is transferred to cable output end, is grounded the electronegative gas gap breakdown of pole non-uniform field configuration.
Realize the protective device of above-mentioned MV grade pulse gas switch triggering cable protection method, special to be:
Including ground protection switch and cable connectors 8, the ground protection switch includes ground connection cylinder 1, supporting insulator 5
And first electrode 16 and second electrode 4 in ground connection cylinder 1；
One end of the ground connection cylinder 1 is provided with cable intake, opposite with cable intake another on the ground connection cylinder 1
End is provided with installing port；
The first electrode 16 is arranged on the inner wall of the ground connection cylinder 1 at installing port, and first electrode 16 is provided centrally with
Centre bore；
The centre bore that the supporting insulator 5 passes through first electrode 16 is arranged at installing port, supporting insulator 5 and ground connection
Cylinder 1 is tightly connected, and is provided with through-hole in supporting insulator 5；
The second electrode 4 includes big termination electrode 41 and the small termination electrode 42 being connected with big termination electrode 41；Small termination electrode 42
Through-hole in supporting insulator stretches out outside ground connection cylinder 1, and big termination electrode 41 is located at outside supporting insulator 5 and 16 phase of first electrode
It is sealing to setting, between big termination electrode 41 and supporting insulator 5；
It is grounded in cylinder 1 and fills electronegative gas；
The electronegative gas gap that non-uniform field configuration in pole is formed between big termination electrode 41 and first electrode 16, when triggering arteries and veins
The polarity chron that is positive is rushed, big termination electrode 41 face opposite with first electrode 16 is plane, first electrode 16 and big 41 face of termination electrode
One end be tip；When trigger pulse is negative polarity chron, big termination electrode 41 one end opposite with first electrode 16 is tip, first
The face of electrode 16 and big 41 face of termination electrode is plane；
Cable connectors 8 are arranged at cable intake, seal between cable connectors 8 and ground connection cylinder 1, trigger cable 9
It is inserted into ground connection cylinder 1 from cable intake by cable connectors 8, the core wire of triggering cable 9 is electrically connected with second electrode 4；Triggering
The rubber-insulated wire of cable 9 is grounded by cable connectors 8.
Further, in order to make the good introducing of trigger pulse, protective device of the invention further includes 2 He of lead-in insulator
Insulate sub-electrode 3；
Lead-in insulator 2, insulation sub-electrode 3, the upper cover plate 7 for being grounded cylinder and cable connectors 8 form cable and introduce cavity；
Insulation sub-electrode 3 is crimped with second electrode 4, and lead-in insulator 2 is tubular, one end of lead-in insulator 2 and ground connection
Cylinder 1 top seal connection, the other end and insulation sub-electrode 3 of lead-in insulator 2 are tightly connected；
It triggers cable 9 to introduce in ground connection cylinder 1 from cable connectors 8, the cable core and insulation sub-electrode 3 are in electrical contact.
Further, the cable, which introduces, is filled with transformer oil in cavity.
Further, the electronegative gas is SF6。
Further, when one end of first electrode 16 and big 41 face of termination electrode is tip；The first electrode 16 is
The needle electrode of annular electrode or the arrangement of multiple circumference with cusped edge；
It is the annular electrode with cusped edge at tip when one end opposite with first electrode 16 when big termination electrode 41 is tip
Or the needle electrode of multiple circumference arrangements.
Further, the cable connectors 8 and ground connection 1 grafting of cylinder.
The invention has the benefit that
1, MV grades of pulse gas switch triggering cable protection method of the present invention, it is extremely uneven in triggering cable output end parallel connection
The electronegative gas gap of field configuration switchs triggered as normal in MV grades of pulse gas using the polar effect of its pulse breakdown
In the case of, it is grounded trigger pulse after effective introduce；Or in the case where self breakdown occurs for MV grades of pulse gas switches,
MV grades of pulse gas are switched into born pulse voltage ground connection to realize to the protection of triggering cable, solve MV grades of pulse airs
High voltage pulse is coupled to the problem of triggering cable makes its insulation breakdown in body switch breakdown process.
2, triggering cable protecting device of the invention integrates the introducing of triggering cable and ground protection, install convenient are made
Valence is low, using and it is easy to maintain.
3, triggering cable protecting device of the invention realizes not homopolarity using the polar effect of electronegative gas pulse breakdown
Property pulse under breakdown ground connection, various working can be coped with, without be added active operation can be realized triggering cable effective grounding
Protection.
4, triggering cable protecting device of the invention is using electronegative gas gap, the actuation time of gas gap breakdown
Ns grades, ground connection response is fast, is conducive to the protection of cable insulation.
5, triggering cable protecting device of the invention can facilitate realization to introducing by adjusting electronegative gas air pressure
Trigger pulse width is effectively adjusted.
6, triggering cable protecting device of the invention, triggering cable and protective device are connected structure, even if triggering cable
Damage carries out dismantling maintenance without to apparatus main body, and operational efficiency is high.
Detailed description of the invention
Fig. 1 is triggering cable protecting device schematic diagram of the embodiment of the present invention；
Fig. 2 is the schematic diagram that triggering cable protecting device of the embodiment of the present invention connects MV grades of pulse gas switch.
Fig. 3 is the effect diagram of the embodiment of the present invention.
Wherein, it is small to be grounded cylinder, 2- lead-in insulator, 3- insulation sub-electrode, 4- second electrode, the big termination electrode of 41-, 42- by 1-
Termination electrode, 5- supporting insulator, 6- fastening nut, 7- upper cover plate, 8- cable connectors, 9- triggering cable, 10- high-field electrode,
11- trigger electrode, 12- grounding electrode, 13- triggering isolation inductance, 14- triggering isolation resistance, 15- waterline are grounded cylinder, 16- first
Electrode.
Specific embodiment
The present invention is described in detail below.
A kind of MV grades of pulse gas switch triggering cable protection method, comprising the following steps:
1) the earth protective switch between triggering cable 9 and triggering isolation resistance 14, ground protection switch use pole
The electronegative gas gap of non-uniform field configuration；
2) parameter of regulated ground protective switch, so that:
In the case where MV grades of pulse gas switch is triggered as normal, ground protection switch can be triggered pulse breakdown and
Breakdown time delay is greater than the breakdown time delay of MV grades of pulse gas switch, the electronegativity gas of pole non-uniform field configuration when trigger pulse introduces
Body space is in an off state, and trigger pulse can normally introduce MV grades of pulse gas switches；MV grades of pulse gas switch conductions
After closure, trigger pulse is grounded the electronegative gas gap breakdown of pole non-uniform field configuration；
In the case where self breakdown occurs for MV grades of pulse gas switches, MV grades of pulse gas switch born pulse voltage
It is transferred to cable output end, is grounded the electronegative gas gap breakdown of pole non-uniform field configuration.Prevent the negative polarity of coupling high
Pulse voltage is passed to cable.
MV grade pulse gas switch triggering cable protection method of the invention is born suitable for MV grades of pulse gas switches
Pulse voltage polarity and the opposite polarity situation of trigger pulse.
The triggering cable protecting device for realizing the method for the present invention is described in detail below in conjunction with attached drawing.
When trigger pulse is positive polarity, MV grade pulse gas switch born pulses and are negative polarity chron, realize of the invention
One preferred embodiment of the triggering cable protecting device of method is as shown in Figs. 1-2.
As shown in Figure 1, triggering cable protecting device of the invention includes ground protection switch and cable connectors 8, ground connection
Protective switch is by ground connection cylinder 1, lead-in insulator 2, insulation sub-electrode 3, second electrode 4, first electrode 16, supporting insulator 5, tight
Gu the composition such as nut 6 and the upper cover plate 7 for being grounded cylinder.Lead-in insulator 2, insulation sub-electrode 3, the upper cover plate 7 and cable for being grounded cylinder
Connector 8 constitutes cable and introduces cavity.For 9 apical grafting of cable core on insulation sub-electrode 3, cable sheath is connected to cable connectors
It is grounded on 8.Insulation sub-electrode 3 is closely crimped with second electrode 4 and is connected on triggering isolation resistance 14 by second electrode 4, real
The introducing of existing trigger pulse.Cable, which introduces in cavity, fills transformer oil for increasing cable creepage distance, prevents trigger pulse from sending out
Raw edge flashing.It is grounded cylinder 1 and is grounded one gas cavity of composition of upper cover plate 7 of cylinder, the upper cover plate 7 for being grounded cylinder has inflation/deflation to connect
Mouthful, second electrode 4, supporting insulator 5, fastening nut 6 are fixed on the hole of ground connection cylinder bottom, are grounded a sealed bottom.
Second electrode 4 includes big termination electrode 41 and the small termination electrode 42 being connected with big termination electrode 41；Small termination electrode 42 passes through supports insulative
Through-hole on son stretches out outside ground connection cylinder 1, and big termination electrode 41 is located at outside supporting insulator 5 to be oppositely arranged with first electrode 16, big end
It is sealing between electrode 41 and supporting insulator 5；Cavity fills SF6Gas.Ground connection cylinder corresponds to the first electricity of setting at second electrode 4
Pole 16, first electrode 16 are an annular electrode, and first electrode 16 and big termination electrode 41 constitute electronegative gas gap.Change support
The distance in the adjustable electronegative gas gap of 5 thickness of insulator.The end of first electrode 16 is tip, and big termination electrode 41 with
The opposite face of first electrode 16 is plane, and the electronegative gas gap of pole non-uniform field configuration is consequently formed.
As shown in Fig. 2, triggering cable protecting device is located at the output end and MV grades of pulse gas switch triggerings of triggering cable
Between the head end of isolation resistance 14.
When in use: according to Fig. 1 installation triggering cable, cable introduces injection transformer oil after cavity, fills in gas cavity
Certain air pressure SF6Gas can guarantee that electronegative gas gap breakdown time delay is greater than MV grades of pulse gas and opens by adjusting air pressure
Close breakdown time delay.
When positive polarity high pressure trigger pulse arrives, electric field is directed toward first electrode 16 by second electrode 4, and first electrode 16 produces
Raw negative corona, electronegative gas gap are resistant to higher positive pulse voltage, and thus trigger pulse is by the second electricity
Pole is loaded on MV grades of pulse gas switches；
Since electronegative gas gap breakdown time delay is greater than the breakdown time delay of MV grades of pulse gas switch, when the height of positive polarity
The pressure trigger pulse duration is more than after MV grades of pulse gas switch breakdown time delays, and high pressure trigger pulse can make electronegative gas
Breakdown closure occurs for gap, is equivalent at this time and trigger pulse is truncated, and realizes the insulation protection to triggering cable.
When self breakdown occurs for MV grades of pulse gas switches, MV grades of pulse gas switch born negative voltage pulse
When being transmitted to triggering cable output end, electric field is equivalent to by first electrode 16 and is directed toward second electrode 4, due to SF6Pulse breakdown
Polar effect, electronegative gas gap puncture rapidly, are grounded negative voltage pulse, realize that the insulation to triggering cable is protected
Shield.
Can be applied to negative polarity gas of the invention further includes oxygen, freon etc., due to SF6Disruptive field intensity it is high and
Polar effect becomes apparent from, therefore preferably SF6。
One more specifically embodiment it is as follows:
MV grades of pulse gas switches are made of high-field electrode 10, trigger electrode 11 and grounding electrode 12, MV grades of pulse gas
Switch gap distance is 10cm, and MV grades of pulse gas switch internals fill SF6Gas, air pressure 0.5MPa.Trigger electrode 11 meets 2 μ H
Triggering isolation inductance 13 and 500 ohm triggers isolation resistance 14.
Triggering cable protecting device ground connection cylinder diameter is 230mm, height 210mm, is placed on waterline ground connection outer cylinder 15.Electricity
Cable introduces cavity internal diameter 30mm, and length 120mm fills transformer oil.High-pressure coaxial cable introduces protection dress by cable connectors 8
It sets.High-pressure coaxial cable impedance is 75 Ω, insulating layer diameter 25mm.Input trigger pulse peak value is 250kV, pulsewidth about 100ns.
4 diameter of second electrode is 110mm, and ring section width is 10mm.16 diameter of first electrode is 101mm.First electricity
The ground protection gap spacing that pole 16 and second electrode 4 are constituted is 10mm.By theoretical calculation, when filling SF between gap6Gas
When air pressure is 0.3MPa, 250kV positive pulse is loaded into second electrode 4, and gap breakdown time delay is 124ns；250kV negative pulse adds
Carrying gap breakdown time delay on the second electrode 4 is only 10ns.
The course of work of the embodiment is as follows:
Under nominal situation, the triggered cable of triggering system output 250kV positive polarity trigger pulse reaches second electrode 4, this
When electronegative gas gap can be by the high voltage pulse of 250kV, while the triggered isolation resistance 14 of trigger pulse and triggering isolation
Inductance 13 is applied to trigger electrode 11.MV grades of pulse gas switch tolerance 2.8MV pulse negative high voltages, under trigger pulse effect
Puncture closure after about 100ns.Since the time delay that high-voltage pulse is born in electronegative gas gap is about 124ns, then touching is introduced
Current potential on power generation pole 12 can maintain always high voltage before MV grades of pulse gas switch breakdown, not influence MV grades of pulse gas
Switch breakdown process.The high-voltage pulse time, which is born, when electronegative gas gap is greater than 124ns, electronegative gas gap breakdown closure
Ground connection implements to protect to cable.It is illustrated in figure 3 the pulse voltage waveform that ground protection switch is born.Ground protection switch is held
Puncture after pulse voltage by about 250ns, cable voltage drop is as low as zero.
Under unusual service condition, electronegative gas gap is resistant to self breakdown during negative polarity 2.8MV high voltage pulse, high voltage pulse
Triggered isolation resistance 14 and triggering isolation inductance 13 and triggering 75 Ω of cable resistance partial pressure after, pulse voltage decay to about-
Enter triggering cable after 230kV.Ground protection switch is since polar effect occurs to puncture (time delay about 10ns) rapidly and connects at this time
The protection insulated to triggering cable 9 is realized on ground.
When trigger pulse is negative polarity, MV grade pulse gas switch born pulses and are positive polarity chron, realize of the invention
The difference of the triggering cable protecting device and Fig. 1 of method be " end of first electrode 16 be plane electrode, second electrode 4 it is big
It is tip at termination electrode 41 and 16 face of first electrode, forms the electronegative gas gap of pole non-uniform field configuration ".
In use, setting air pressure, which makes electronegative gas gap breakdown time delay be greater than MV grades of pulse gas, switchs breakdown time delay.
When negative polarity trigger pulse arrives, electric field is directed toward second electrode 4 by first electrode 16, and second electrode 4 generates negative corona, and electricity is negative
Property gas gap be resistant to higher pulse voltage, thus trigger pulse is loaded into MV grades of pulse gas by second electrode
On switch.
After the high pressure trigger pulse duration of negative polarity being more than MV grades of pulse gas switch breakdown time delays, arteries and veins is triggered
Punching makes gas gap that breakdown closure occur, and is equivalent at this time and trigger pulse is truncated, and realizes the insulation protection to triggering cable.
When self breakdown occurs for MV grades of pulse gas switches, MV grades of pulse gas switch born positive pulse voltage
When being transmitted to triggering cable output end, electric field is equivalent to by second electrode 4 and is directed toward first electrode 16, due to SF6Pulse breakdown
Polar effect, electronegative gas gap puncture rapidly, make positive pulse voltage ground, realize that the insulation to triggering cable is protected
Shield.
Specification of the invention gives sufficient explanation to summary of the invention, and each component design parameter can be according to reality
The setting of border demand, those of ordinary skill are enough the Content Implementation of specification through the invention.
Claims (7)
1. a kind of MV grades of pulse gas switch triggering cable protection method, which comprises the following steps:
1) the earth protective switch between triggering cable (9) and triggering isolation resistance (14), ground protection switch use pole
The electronegative gas gap of non-uniform field configuration；The ground protection switch includes ground connection cylinder (1), supporting insulator (5) and position
First electrode (16) and second electrode (4) in ground connection cylinder (1)；
One end of ground connection cylinder (1) is provided with cable intake, opposite with cable intake another on ground connection cylinder (1)
End is provided with installing port；
The first electrode (16) is arranged on the inner wall of the cylinder of the ground connection at installing port (1), and the center of first electrode (16) is arranged
There is centre bore；
The supporting insulator (5) pass through first electrode (16) centre bore be arranged at installing port, supporting insulator (5) with connect
Ground cylinder (1) is tightly connected, and supporting insulator is provided with through-hole on (5)；
The second electrode (4) includes the connected small termination electrode (42) of big termination electrode (41) He Yu great termination electrode (41)；Small end electricity
Pole (42) pass through supporting insulator on through-hole stretch out ground connection cylinder (1) outside, big termination electrode (41) be located at supporting insulator (5) outside with
First electrode (16) is oppositely arranged, and is sealing between big termination electrode (41) and supporting insulator (5)；
It is grounded in cylinder (1) and fills electronegative gas；
The electronegative gas gap of pole non-uniform field configuration is formed between big termination electrode (41) and first electrode (16)；Big termination electrode
It (41) is plane with first electrode (16) opposite face, one end of first electrode (16) and big termination electrode (41) face is tip,
Or big termination electrode (41) and first electrode (16) opposite one end are tip, first electrode (16) and big termination electrode (41) face
Face be plane；
2) parameter of regulated ground protective switch, specially change supporting insulator (5) thickness or adjusting electronegative gas air pressure,
So that:
In the case where MV grades of pulse gas switches are triggered as normal, ground protection switchs can be triggered pulse breakdown and breakdown
Time delay is greater than the breakdown time delay of MV grades of pulse gas switch, when trigger pulse introduces between the electronegative gas of pole non-uniform field configuration
Gap is in an off state, and trigger pulse can normally introduce MV grades of pulse gas switches；MV grades of pulse gas switch conduction closures
Afterwards, trigger pulse is grounded the electronegative gas gap breakdown of pole non-uniform field configuration；
In the case where self breakdown occurs for MV grades of pulse gas switches, MV grades of pulse gas switch born pulse voltage transmission
To cable output end, it is grounded the electronegative gas gap breakdown of pole non-uniform field configuration.
2. realizing the protective device of MV grades of pulse gas switch triggering cable protection method described in claim 1, feature exists
In:
Including ground protection switch and cable connectors (8), the ground protection switch includes ground connection cylinder (1), supporting insulator
(5) and positioned at the first electrode (16) and second electrode (4) being grounded in cylinder (1)；
One end of ground connection cylinder (1) is provided with cable intake, opposite with cable intake another on ground connection cylinder (1)
End is provided with installing port；
The first electrode (16) is arranged on the inner wall of the cylinder of the ground connection at installing port (1), and the center of first electrode (16) is arranged
There is centre bore；
The supporting insulator (5) pass through first electrode (16) centre bore be arranged at installing port, supporting insulator (5) with connect
Ground cylinder (1) is tightly connected, and supporting insulator is provided with through-hole on (5)；
The second electrode (4) includes the connected small termination electrode (42) of big termination electrode (41) He Yu great termination electrode (41)；Small end electricity
Pole (42) pass through supporting insulator on through-hole stretch out ground connection cylinder (1) outside, big termination electrode (41) be located at supporting insulator (5) outside with
First electrode (16) is oppositely arranged, and is sealing between big termination electrode (41) and supporting insulator (5)；
It is grounded in cylinder (1) and fills electronegative gas；
The electronegative gas gap of pole non-uniform field configuration is formed between big termination electrode (41) and first electrode (16)；Big termination electrode
It (41) is plane with first electrode (16) opposite face, one end of first electrode (16) and big termination electrode (41) face is tip,
Or big termination electrode (41) and first electrode (16) opposite one end are tip, first electrode (16) and big termination electrode (41) face
Face be plane；
Cable connectors (8) are arranged at cable intake, seal between cable connectors (8) and ground connection cylinder (1), trigger cable
(9) it is inserted into ground connection cylinder (1) from cable intake by cable connectors (8), triggers core wire and second electrode (4) of cable (9)
Electrical connection；The rubber-insulated wire for triggering cable (9) is grounded by cable connectors (8).
3. protective device according to claim 2, it is characterised in that:
It further include lead-in insulator (2) and insulation sub-electrode (3)；
Lead-in insulator (2), insulation sub-electrode (3), the upper cover plate (7) for being grounded cylinder and cable connectors (8) form cable and introduce
Cavity；
Insulation sub-electrode (3) crimp with second electrode (4), lead-in insulator (2) be tubular, one end of lead-in insulator (2) and
It is grounded the connection of cylinder (1) top seal, the other end of lead-in insulator (2) and insulation sub-electrode (3) are tightly connected；
It triggers cable (9) to introduce in ground connection cylinder (1) from cable connectors (8), the cable core connects with insulation sub-electrode (3) electricity
Touching.
4. protective device according to claim 3, it is characterised in that:
The cable, which introduces, is filled with transformer oil in cavity.
5. protective device according to claim 4, it is characterised in that:
The electronegative gas is SF6。
6. according to any protective device of claim 2-5, it is characterised in that:
The tip is the needle point of the cusped edge of annular electrode or the needle electrode of multiple circumference arrangement.
7. protective device according to claim 6, it is characterised in that:
The cable connectors (8) and ground connection cylinder (1) grafting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810613884.6A CN108832602B (en) | 2018-06-14 | 2018-06-14 | A kind of MV grades of pulse gas switch triggering cable protection method and protective device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810613884.6A CN108832602B (en) | 2018-06-14 | 2018-06-14 | A kind of MV grades of pulse gas switch triggering cable protection method and protective device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108832602A CN108832602A (en) | 2018-11-16 |
| CN108832602B true CN108832602B (en) | 2019-08-13 |
Family
ID=64141871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810613884.6A Active CN108832602B (en) | 2018-06-14 | 2018-06-14 | A kind of MV grades of pulse gas switch triggering cable protection method and protective device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108832602B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110913555A (en) * | 2019-12-06 | 2020-03-24 | 西安交通大学 | Plasma jet switch |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110336185B (en) * | 2019-07-25 | 2021-08-31 | 西北核技术研究院 | Multi-channel gas switch |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4490650A (en) * | 1982-08-31 | 1984-12-25 | The United States Of America As Represented By The United States Department Of Energy | Gas mixture for diffuse-discharge switch |
| CN2400946Y (en) * | 1999-12-23 | 2000-10-11 | 中国人民解放军第二炮兵工程学院技术开发中心 | Picosecond stage spark gap high-voltage discharge switch |
| CN104993377B (en) * | 2015-07-15 | 2016-11-23 | 西北核技术研究所 | MV level electricity triggers the installation method triggering introducing device and this device of switch |
-
2018
- 2018-06-14 CN CN201810613884.6A patent/CN108832602B/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110913555A (en) * | 2019-12-06 | 2020-03-24 | 西安交通大学 | Plasma jet switch |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108832602A (en) | 2018-11-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203519770U (en) | Device for high-voltage power cable GIS terminal commissioning test | |
| CN108832602B (en) | A kind of MV grades of pulse gas switch triggering cable protection method and protective device | |
| CN205050651U (en) | High -tension bushing and isolated bus | |
| NO167618B (en) | SURVIVAL DEVICE FOR ELECTRICAL APPLIANCES. | |
| CN106469594B (en) | Bushing shell for transformer | |
| CN202443809U (en) | Insulator for preventing lightning disconnection | |
| EP1102372B1 (en) | Creeping discharge lightning arrestor | |
| CN209344514U (en) | The device of steel tower tower head overvoltage when a kind of inhibition transmission line lightning stroke | |
| CN203260987U (en) | High-voltage line lightning arrester | |
| Smugała et al. | Distribution transformers protection against high frequency switching transients | |
| CN1048592C (en) | Surge suppression in electric apparatus | |
| CN104614645A (en) | GIS and optimization method of integrated earthed ultrahigh-frequency partial discharge sensor of GIS | |
| CA2296672C (en) | Method of preventing break in insulated wire and instantaneous power failure | |
| CN103311810A (en) | Voltage withstanding spark plug for tests and electric leakage testing method | |
| CN207542564U (en) | A kind of insulator style voltage limiter of function with ground | |
| CN203660276U (en) | Gap lightning protection device | |
| CN203859510U (en) | 35kV overhead line lightning stroke clamping protector | |
| CN107834356A (en) | A kind of insulator style voltage limiter of function with ground | |
| Smugala et al. | Protecting distribution transformers against very fast transients due to switching operation | |
| CN218569805U (en) | Lightning triggering device for overhead distribution line | |
| CN216625298U (en) | Electric power device prevents flashover appurtenance | |
| CN202649385U (en) | High-voltage cable withstand voltage test wire connection device | |
| CN209592774U (en) | A kind of structure of gas-insulated ring network cabinet | |
| CN208015210U (en) | A kind of draw-out type metal armored withdrawing switch apparatus | |
| CN201655525U (en) | Novel plug-pull transformer with fuse |
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 |