CN110208644A - GIS cable machinery - Google Patents
GIS cable machinery Download PDFInfo
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- CN110208644A CN110208644A CN201910407412.XA CN201910407412A CN110208644A CN 110208644 A CN110208644 A CN 110208644A CN 201910407412 A CN201910407412 A CN 201910407412A CN 110208644 A CN110208644 A CN 110208644A
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- 238000012360 testing method Methods 0.000 claims abstract description 88
- 238000012806 monitoring device Methods 0.000 claims abstract description 26
- 239000004020 conductor Substances 0.000 claims description 23
- 239000012212 insulator Substances 0.000 claims description 14
- 238000012544 monitoring process Methods 0.000 claims description 14
- 230000004807 localization Effects 0.000 claims description 6
- 238000001125 extrusion Methods 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 abstract description 26
- 238000002955 isolation Methods 0.000 abstract description 23
- 238000001514 detection method Methods 0.000 abstract description 5
- 230000005611 electricity Effects 0.000 description 9
- 238000009413 insulation Methods 0.000 description 9
- 238000007689 inspection Methods 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000000926 separation method Methods 0.000 description 5
- 230000009466 transformation Effects 0.000 description 5
- 230000008439 repair process Effects 0.000 description 4
- 229910018503 SF6 Inorganic materials 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 description 3
- 238000010998 test method Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229960000909 sulfur hexafluoride Drugs 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- VMQPMGHYRISRHO-UHFFFAOYSA-N benzvalene Chemical group C1=CC2C3C1C32 VMQPMGHYRISRHO-UHFFFAOYSA-N 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001310 location test Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/086—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution networks, i.e. with interconnected conductors
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- 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
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1263—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
- G01R31/1281—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation of liquids or gases
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/035—Gas-insulated switchgear
- H02B13/0358—Connections to in or out conductors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Gas-Insulated Switchgears (AREA)
Abstract
The application discloses a kind of GIS cable machinery, each T connect cylinder including each high-voltage terminal cable that connects one to one respectively；T connect cylinder includes cylinder, is set to the intracorporal isolating device of cylinder, and the test window on the barrel of cylinder；The first end of isolating device connects main transformer, and second end connects the end of high-voltage terminal cable, third end ground connection；One end of test window is used to connect the third end of isolating device；The other end for testing window is used for connecting fault monitoring device.By installing test window additional in T connect cylinder, realization, which is not required to deflation (GIS gas), to be tested cable (fault detection), and then after realizing discovery cable fault, it can be operated by isolating device and realize failure cable isolation, normal cable operation, greatly reduces power off time and range.The portability of line maintenance maintenance is improved, and improves the efficiency of the fault section and isolation of T link.
Description
Technical field
This application involves distribution technique fields, more particularly to a kind of GIS cable machinery.
Background technique
The simplification wiring of high voltage substation, using route -- 3 main transformers, 3 road power supplys are finally pressed in transformer group wiring, every station
Configuration, every time power circuit " T " connect the principle scheme of 3 main transformers power supply, referred to as " 3T " wiring.When high-voltage fence is connect using 3T
When line designs, cable T joint point is arranged in substation, completes T in substation for convenience and connects, and needs to increase in substation
GIS (Gas Insulated Switchgear, gas insulated combined electric appliance equipment) cable T joint cylinder.
Currently, high pressure main equipment " line cord, power transformation GISization " process is constantly accelerated, high-tension cable and GIS device are equal
Without exposed live part, under maintenance mode can not flexibly off-the-line isolation active section or faulty section, repair and maintenance it is extremely inconvenient；And 3T
The characteristics of wiring itself, will lead to line outage and be related to that website is more, and the operating time is long, and coverage is wide, increase maintenance workload,
Therefore the time for making an inspection tour range and trouble shoot is considerably increased when line fault, when route routine interruption maintenance, the change that is related to
Power station is more, and the operating time is long, and maintenance workload increases, and substantially reduces maintenance efficiency.Permanent event once occurs for cable T joint route
Barrier, fault location is difficult, and T connector is difficult to unlock, and can not quickly cut off faulty section, time-consuming for reparation；Cable line fault positioning
There are the phenomenons of pulse signal confusion and trouble spot judging difficulty, have difficulties in terms of fault location.And there are branch joints
Cable run, the even more difficult point of cable's fault locating, the inspection of fault time is difficult to ensure.
During realization, inventor has found that at least there are the following problems: traditional use " 3T " wiring in traditional technology
High-voltage fence in, line maintenance maintenance is inconvenient, and the fault section and isolation low efficiency of T link.
Summary of the invention
Based on this, it is necessary to which, in the high-voltage fence of traditional use " 3T " wiring, line maintenance maintenance is inconvenient, and T
The problem of fault section and isolation low efficiency of link, provides a kind of GIS cable machinery.
To achieve the goals above, the embodiment of the invention provides a kind of GIS cable machineries, including the company of one-to-one correspondence respectively
Connect each T connect cylinder of each high-voltage terminal cable；
T connect cylinder includes cylinder, is set to the intracorporal isolating device of cylinder, and the test window on the barrel of cylinder；Isolation
The first end of device connects main transformer, and second end connects the end of high-voltage terminal cable, third end ground connection；Test the one of window
Hold the third end for connecting isolating device；The other end for testing window is used for connecting fault monitoring device.
Isolating device includes disconnecting switch and high speed grounding switch in one of the embodiments,；
The first end of disconnecting switch connects main transformer, and second end connects the end of high-voltage terminal cable；Rapid grounding
The second end of one end connection disconnecting switch of switch；The other end of high speed grounding switch is grounded.
Test window includes conductor terminal plate in one of the embodiments,；
One end of the first end connection high speed grounding switch of conductor terminal plate；The second end connecting fault of conductor terminal plate is supervised
Measurement equipment.
Test window further includes the test window cover on the barrel of cylinder in one of the embodiments,；It tests in window cover
Equipped with test cavity；Conductor terminal plate is set in test cavity body.
Test window further includes the disc insulator for the gas chamber of T connect cylinder to be isolated in one of the embodiments,；Benzvalene form is exhausted
Edge is set in test cavity body.
Test window further includes support insulator in one of the embodiments,；Support insulator connects conductor terminal plate.
Disconnecting switch is high voltage isolator in one of the embodiments,.
Main transformer is separately connected 2 high-voltage terminal cables in one of the embodiments,.
It in one of the embodiments, further include for the breaker to main transformer and the electricity interlocked between isolating device
Gas-tight locking device.
Fault monitoring device is insulating monitoring equipment or fault localization equipment in one of the embodiments,.
A technical solution in above-mentioned technical proposal is had the following advantages and beneficial effects:
It is connected one to one based on each T connect cylinder and each high-voltage terminal cable；The first end of isolating device connects main transformer,
Second end connects the end of high-voltage terminal cable, third end ground connection；One end of test window is used to connect the third of isolating device
End；The other end for testing window is used for connecting fault monitoring device.By installing isolating device additional in original T connect cylinder, realize that T connects
Separation between cable and between major loop；By installing test window additional in T connect cylinder, realization is not required to deflate (GIS gas) i.e.
Cable can be tested (fault detection), and then after realization discovery cable fault, isolating device can be passed through and operate realization failure
Cable isolation, normal cable operation, greatly reduces power off time and range.The portability of line maintenance maintenance is improved, with
And improve the efficiency of the fault section and isolation of T link.
Detailed description of the invention
Fig. 1 is the first structure diagram of GIS cable machinery in one embodiment；
Fig. 2 is the second structural schematic diagram of GIS cable machinery in one embodiment；
Fig. 3 is the structural schematic diagram that window is tested in one embodiment.
Specific embodiment
The application in order to facilitate understanding is described more fully the application below with reference to relevant drawings.In attached drawing
Give the preferred embodiment of the application.But the application can realize in many different forms, however it is not limited to this paper institute
The embodiment of description.On the contrary, purpose of providing these embodiments is make it is more thorough and comprehensive to disclosure of this application.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term " and or " used herein includes one or more phases
Any and all combinations of the listed item of pass.
In the high-voltage fence of traditional use " 3T " wiring, 110kV main equipment " line cord and power transformation GISization " process
Constantly accelerate, 110kV high-tension cable and GIS device are and not set between twice 110kV outlets arranged side by side without exposed live part
Any fault isolation device, can not flexibly off-the-line isolation active section or faulty section, repair and maintenance be extremely inconvenient under maintenance mode；And
The characteristics of 3T wiring itself, will lead to line outage and be related to that website is more, and the operating time is long, and coverage is wide, increase service work
Amount.For example, 1 or 2 110kV line outages, will result in 3 110kV substations each 1 or 2 main transformers power failures, there are masters
Change " N-1 ", " N-2 " or 10kV distribution turn the requirement of power supply capacity, and 110kV line loop operation or 110kV equipment start involved by charging
And 4 to 5, substation, required 8 to 10 people of operator need to contact more 110kV substation (generally 3).Cause
When this line fault, the time for making an inspection tour range and trouble shoot is considerably increased, when route routine interruption maintenance, the power transformation that is related to
It stands more, the operating time is long, and maintenance workload increases.And if backbone is double back or four Hui Gongta, but route carries out shaft tower transformation
When need to carry out 6 power failure operations, 4 times more than double back chain type wiring, substantially reduce maintenance efficiency.
Further, since not set any Fault Isolation or measuring device between twice 110kV outlets arranged side by side, cable T
Permanent fault once occurs for link, and fault location is difficult, and T connector is difficult to unlock, and can not quickly cut off faulty section, repairs consumption
Duration；Cable line fault is positioned there are the phenomenon of pulse signal confusion and trouble spot judging difficulty, is deposited in terms of fault location
In difficulty.And there are the cable run of branch joint, the even more difficult point of cable's fault locating, the inspection of fault time is difficult to ensure.
There are T link fault location heavy workload, time-consuming for accident maintenance, and the failure removal of existing T link relies on source side
Wire-outgoing breaker is realized in 220kV substation, and failure removal T wiring causes the main transformer of other substations in the T link to have a power failure,
A possibility that in the presence of scope of power outage is expanded.
In the high-voltage fence of traditional use " 3T " wiring, permanent fault once occurs for route, can not quickly determine and
Faulty section is cut off, whole routes are both needed to have a power failure, and coverage is larger.In addition, T connector is difficult to cut-off, cause fault location difficult,
Especially when three terminals are GIS terminal, need just to can be carried out fault location test after dismantling GIS terminal deflation, even more
Spend a large amount of manpower and material resources and time；Branch is more, and the waveform of traveling wave method becomes more complicated, increase trouble shoot difficulty and when
Between.
And in GIS cable machinery provided by the present application, it can realize that T connects by installing isolating device additional in original T connect cylinder
Separation between cable；By installing test window additional in T connect cylinder, realization, which is not required to deflation (GIS gas), to try cable
It tests (fault detection), and then after realization discovery cable fault, isolating device can be passed through and operate realization failure cable isolation, normally electricity
Cable operation, greatly reduces power off time and range.The portability of line maintenance maintenance is improved, and improves T link
Fault section and isolation efficiency.
In one embodiment, it as shown in Figure 1, providing a kind of GIS cable machinery, including connects one to one respectively each
Each T connect cylinder 120 of high-voltage terminal cable 110.
T connect cylinder 120 includes cylinder 122, the isolating device 124 in cylinder 122, and the barrel set on cylinder 122
On test window 126；The first end of isolating device 124 connects main transformer 130, and second end connects high-voltage terminal cable 110
End, third end ground connection；One end of test window 126 is used to connect the third end of isolating device 124；Test the another of window 126
End is used for connecting fault monitoring device 140.
Wherein, T connect cylinder 120 refers to the sulfur hexafluoride gas-insulating high voltage distribution installation for T link；T link
It refers in high voltage supply, a route is picked out among the route powered from Party A to Party B, power to third party third.High pressure
Outlet cable 110 refers to the high-voltage terminal for connecting substation bus bar.Such as high-voltage terminal cable 110 can be 110kV
Outlet cable.End refers to the cable connector of high-voltage terminal cable end piece.Cylinder 122 can be metal cylinder, cylinder 122
Interior to be equipped with gas chamber, gas chamber can be used to that disconnecting switch, earthing switch bus, connector and outlet terminal etc. is arranged；It is filled in gas chamber
There are insulation performance and excellent SF6 (sulfur hexafluoride) gas of arc extinction performance as insulation and arc-extinguishing medium.Isolating device 124 can be used
To turn off isolation to the high-voltage terminal cable in T connect cylinder when route breaks down.Fault monitoring device 140 can be used to
Monitor line fault；Test window 126 refers to the intermediate equipment for fault monitoring device to be connected to isolating device ground side.
Main transformer 130 refers to the total step-down transformer for being mainly used for power transmission and transformation in a unit or substation.
Specifically, (such as 110kV network system), bus arrangement form are in the high-voltage web system of " 3T " wiring
Route is to the form of transformer group, and outlet is the cable outlet of T connect cylinder, i.e., each T connect cylinder 120 and each high-voltage terminal cable 110 1
One is correspondingly connected with.Main transformer 130 is connected by the first end of isolating device 124, the second end of isolating device 124 connects high pressure
The end of outlet cable 110, the third end ground connection of isolating device 124；One end of test window 126 can be used for connecting isolating device
124 third end；The other end of test window 126 can be used for connecting fault monitoring device 140.When network system operates normally,
It is connected between the first end of isolating device 124 and the second end of isolating device 124, the third end of isolating device 124 disconnects, i.e., high
Extrusion line cable 110 is connected, and the electric power of main transformer 130 is enabled to be transmitted to bus by high-voltage terminal cable 110.In electricity
When the operation of net system is broken down, separated, the isolation dress of the second end of the first end and isolating device 124 of isolating device 124
Set 124 third end conducting ground connection；I.e. high-voltage terminal cable 110 disconnects, and connects close to the high-voltage terminal cable 110 of bus bar side
Ground, whole section of line outage and main transformer 130 are stopped transport, and prevent line electrical leakage etc. from accident occurs.
When entering service mode after network system operation is broken down, test window 126 can be opened, and then malfunction monitoring is set
Standby 140 can be tested by test window 126 to 110 transmission test voltage signal of high-voltage terminal cable；Fault monitoring device 140
According to test result, and then the corresponding position of the route and faulty line that break down can be realized, without to entire T connect cylinder
120 are deflated and are inflated, and the test procedure is simplified, and are tested efficient and convenient.After the completion of testing faulty line, normal high pressure
It is connected between the first end of isolating device 124 on outlet cable and the second end of isolating device 124, the of isolating device 124
Three ends disconnect, i.e., regular link restores electricity；The first end of isolating device 124 on the high-voltage terminal cable of failure and every
Separated, the third end conducting ground connection of isolating device 124 of second end from device 124, i.e. faulty line holding isolation disconnection,
Main transformer 130 restores electricity, and greatly reduces power off time and scope of power outage.
Further, after route breaks down, transmission of electricity first has to carry out Insulation monitoring to line related, and damage in insulation is
For faulty line.Pressure test, i.e. inspection of fault are carried out to faulty line, find out fault point.Window 126 is tested by opening, into
And fault monitoring device 140 tests high-voltage terminal cable 110 by testing window 126, realization is without inflatable and deflatable
It can carry out insulating monitoring and inspection of fault test.After quickly searching fault point by test window 126, i.e., using installation every
Faulty line is disconnected from device 124 to repair, while restoring the power transmission of main transformer 130 in T link, greatly reduces change
Power station power off time.
In one example, fault monitoring device 140 can export the DC pulse voltage letter of 10kV to high-voltage terminal cable
Number carry out test monitoring.
It should be noted that isolating device 124 is set in the gas chamber of cylinder, test window 126 is set to outside cylinder gas chamber, that is, is tried
The gas chamber for testing window 126 and T connect cylinder 120 separates.
In above-mentioned GIS cable machinery, connected one to one based on each T connect cylinder and each high-voltage terminal cable；Isolating device
6th one end connects main transformer, and second end connects the end of high-voltage terminal cable, third end ground connection；The one end for testing window connects
Connect the third end of isolating device；The other end for testing window is used for connecting fault monitoring device.By being installed additional in original T connect cylinder
Isolating device realizes that T connects the separation between cable；By installing test window additional in T connect cylinder, realization is not required to deflate (GIS gas)
Cable can be tested (fault detection), and then after realization discovery cable fault, isolating device can be passed through and operate realization event
Hinder cable isolation, normal cable operation greatly reduces power off time and range.The portability of line maintenance maintenance is improved,
And improve the efficiency of the fault section and isolation of T link.
In a specific embodiment, as shown in Figure 1, main transformer 130 is separately connected 2 high-voltage terminal cables 110.
Specifically, 130 band of main transformer, two high-voltage terminal cables, 110,2 high-voltage terminal cables 110 are set side by side.Respectively
A high-voltage terminal cable 110 connects bus by end.For example, main transformer 130 band, two 110kV outlet cables, 2
110kV outlet cable is set side by side.Each 110kV outlet cable connects 110kV bus by end.By in T connect cylinder 120
Install isolating device 124 on interior high-voltage terminal cable 110 additional, to realize that T connects the separation between cable, and then cable breaks down
When, test window 126 is opened, malfunction monitoring is carried out by fault monitoring device 140, and then can detect that failure cable.Passing through
After testing the quick lookup fault point of window 126, faulty line can be disconnected and repaired, while restoring the power supply of main transformer, greatly
Reduce substation's power off time greatly.
Further, as shown in Fig. 2, may include 3 main transformers 130, each main transformer in 3T connection circuitry
130 bands two return high-voltage terminal cable 110.
In one embodiment, as shown in Figure 1, providing a kind of GIS cable machinery, isolating device 124 includes keeping apart
Close 222 and high speed grounding switch 224.The first end of disconnecting switch 222 connects main transformer 130, and second end connects high-voltage terminal
The end of cable 110；The second end of one end connection disconnecting switch 222 of high speed grounding switch 224；High speed grounding switch 224
The other end ground connection.
Wherein, disconnecting switch 222 can be used to guarantee the safety of High-Voltage Electrical Appliances and device in service work, play isolation voltage
Effect；For example, disconnecting switch 222 can be high voltage isolator.High speed grounding switch 224 refers to short with centainly closing
A kind of earthing switch of specific use of road current capacity.
Specifically, the first end based on disconnecting switch 222 connects main transformer 130, the second end connection of disconnecting switch 222
The end of high-voltage terminal cable 110；The second end of one end connection disconnecting switch 222 of high speed grounding switch 224；Rapid grounding
The other end of switch 224 is grounded.When network system operates normally, disconnecting switch 222 is closed, and high speed grounding switch 224 disconnects,
I.e. high-voltage terminal cable 110 is connected, and the electric power of main transformer 130 is enabled to be transmitted to bus by high-voltage terminal cable 110.
When network system runs and breaks down, disconnecting switch 222 is disconnected, and high speed grounding switch 224 is closed；That is high-voltage terminal cable
110 disconnect, and whole section of line outage and main transformer 130 are stopped transport.Enter service mode after network system operation is broken down
When, test window 126 can be opened, and then fault monitoring device 140 can be transmitted to high-voltage terminal cable 110 by test window 126 and be tried
Voltage signal is tested to be tested；Fault monitoring device 140 can realize the route to break down and event according to test result
The corresponding position for hindering route simplifies the test procedure, tests quick side it is not necessary that entire T connect cylinder 120 is deflated and inflated
Just.After the completion of testing faulty line, the disconnecting switch 222 on normal high-voltage terminal cable is closed, high speed grounding switch 224
It disconnects, i.e., regular link restores electricity；Disconnecting switch 222 on the high-voltage terminal cable of failure disconnects, and rapid grounding is opened
224 closures are closed, i.e. faulty line keeps isolation to disconnect, and main transformer 130 restores electricity, and greatly reduces power off time and power failure
Range.
In above-mentioned GIS cable machinery, by installing disconnecting switch and high speed grounding switch additional in original T connect cylinder, T is realized
Connect the separation between cable；By installing test window additional in T connect cylinder, realization, which is not required to deflation (GIS gas), to carry out cable
It tests (fault detection), and then after realization discovery cable fault, can be operated by isolating device and realize failure cable isolation, normally
Cable operation, greatly reduces power off time and range.The portability of line maintenance maintenance is improved, and improves T wiring
The efficiency of the fault section and isolation on road.
In a specific embodiment, fault monitoring device is insulating monitoring equipment or fault localization equipment.
Wherein, the equipment that insulating monitoring equipment refers to the state of insulation for detecting power cable.Fault localization equipment
It refers to for the equipment to power cable fault location.Insulating monitoring equipment connects the ground connection of isolating device by test window
Side, and then insulating monitoring equipment can carry out Insulation monitoring to corresponding high-voltage terminal cable, if detecting the high-voltage terminal cable
There is damage in insulation, then judges the high-voltage terminal cable for faulty line.Fault localization equipment passes through test window connection isolation dress
The ground side set, and then fault localization equipment can carry out pressure test to faulty line and find out fault point by inspection of fault.
And then realize and be not necessarily to inflation and deflate that line insulation monitoring and inspection of fault test can be carried out, improve the failure of T link
The efficiency for positioning and being isolated.
In one embodiment, as shown in figure 3, test window 126 includes conductor terminal plate 232；The of conductor terminal plate 232
One end of one end connection high speed grounding switch 224；The second end connecting fault monitoring device 140 of conductor terminal plate 232.
Wherein, conductor terminal plate 140 can be used to realize fault monitoring device 140 and high speed grounding switch 224 and connect；It leads
Body terminal plate 140 can be three-phase conductor terminal plate.
Specifically, the first end of conductor terminal plate 140 can be fixedly connected with one end of high speed grounding switch；Conductor terminal plate
The pluggable fault monitoring device 140 of 232 second end.When entering service mode after network system operation is broken down, can open
Test window 126 is opened, fault monitoring device 140 is plugged on conductor terminal plate 232, and then fault monitoring device 140 can pass through
Conductor terminal plate 232 is tested to 110 transmission test voltage signal of high-voltage terminal cable；Fault monitoring device 140 is according to examination
It tests as a result, the corresponding position of the route and faulty line that break down can be realized in turn, without deflating to entire T connect cylinder
And inflation, the test procedure is simplified, is tested efficient and convenient.
In a specific embodiment, test window further includes the test window cover on the barrel of cylinder；Test window cover
It is interior to be equipped with test cavity；Conductor terminal plate is set in test cavity body.
Specifically, test cavity can be set in cylinder, and test cavity is mutually closed with the intracorporal gas chamber of cylinder is isolated, and then right
When route is tested, without deflating to T connect cylinder, test efficient and convenient.Test window cover is flexibly connected with the barrel of cylinder, in electricity
When the operation of net system enters service mode after breaking down, openable test window cover, and then fault monitoring device can be plugged on
Test monitoring is carried out on conductor terminal plate.
In a specific embodiment, as shown in figure 3, test window 126 further includes the basin for the gas chamber of T connect cylinder to be isolated
Formula insulator 234；Disc insulator 234 is set in test cavity body.
Specifically, disc insulator 234 can be set in test cavity body, for the gas chamber of T connect cylinder to be isolated, plays sealing and make
With.
Further, as shown in figure 3, test window 126 further includes support insulator 236；Support insulator 236 connects conductor
Terminal plate 232.Specifically, support insulator 236 refers to a kind of insulation control.Conductor is connected to based on support insulator 236
On terminal plate 232, and then creepage distance can be increased, improve the security performance of test window.
In one embodiment, further include for the breaker to main transformer and interlocked between isolating device electrically close
Locking device.
Wherein, electric locking device can be used for setting breaker and isolating device (disconnecting switch and high speed grounding switch) etc.
The operational power source circuit of standby auxiliary contact access related electric equipment constitutes locking.Electric locking device can be used to prevent
The maloperation of breaker and isolating device (disconnecting switch and high speed grounding switch).
Specifically, breaker is connected between the output end of main transformer and high-voltage terminal cable, is electrically closed by installing additional
Locking device prevents the maloperation of disconnecting switch and high speed grounding switch, it can be achieved that interlocking between breaker and isolating device, into
And improve the security performance of T connect cylinder.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The several embodiments of the application above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the concept of this application, various modifications and improvements can be made, these belong to the protection of the application
Range.Therefore, the scope of protection shall be subject to the appended claims for the application patent.
Claims (10)
1. a kind of GIS cable machinery, which is characterized in that each T connect cylinder including each high-voltage terminal cable that connects one to one respectively；
The T connect cylinder includes cylinder, is set to the intracorporal isolating device of the cylinder, and the test on the barrel of the cylinder
Window；The first end of the isolating device connects main transformer, and second end connects the end of the high-voltage terminal cable, third end
Ground connection；One end of the test window is used to connect the third end of the isolating device；The other end of the test window is for connecting
Fault monitoring device.
2. GIS cable machinery according to claim 1, which is characterized in that the isolating device includes disconnecting switch and fast
Fast earthing switch；
The first end of the disconnecting switch connects the main transformer, and second end connects the end of the high-voltage terminal cable；
One end of the high speed grounding switch connects the second end of the disconnecting switch；The other end of the high speed grounding switch is grounded.
3. GIS cable machinery according to claim 2, which is characterized in that the test window includes conductor terminal plate；
The first end of the conductor terminal plate connects one end of the high speed grounding switch；The second end of the conductor terminal plate connects
Connect the fault monitoring device.
4. GIS cable machinery according to claim 3, which is characterized in that the test window further includes being set to the cylinder
Barrel on test window cover；Test cavity is equipped in the test window cover；The conductor terminal plate is set to the test cavity
It is interior.
5. GIS cable machinery according to claim 4, which is characterized in that the test window further includes for the T to be isolated
The disc insulator of the gas chamber of connect cylinder；
The disc insulator is set in the test cavity body.
6. GIS cable machinery according to claim 4, which is characterized in that the test window further includes support insulator；
The support insulator connects the conductor terminal plate.
7. GIS cable machinery according to claim 1, which is characterized in that the disconnecting switch is high voltage isolator.
8. GIS cable machinery according to claim 1, which is characterized in that the main transformer is separately connected 2 height
Extrusion line cable.
9. according to claim 1 to GIS cable machinery described in 8 any one, which is characterized in that further include for the master
The electric locking device interlocked between the breaker of transformer and the isolating device.
10. according to claim 1 to GIS cable machinery described in 8 any one, which is characterized in that the fault monitoring device
For insulating monitoring equipment or fault localization equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910407412.XA CN110208644A (en) | 2019-05-15 | 2019-05-15 | GIS cable machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910407412.XA CN110208644A (en) | 2019-05-15 | 2019-05-15 | GIS cable machinery |
Publications (1)
| Publication Number | Publication Date |
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| CN110208644A true CN110208644A (en) | 2019-09-06 |
Family
ID=67787449
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910407412.XA Pending CN110208644A (en) | 2019-05-15 | 2019-05-15 | GIS cable machinery |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110672886A (en) * | 2019-10-15 | 2020-01-10 | 国网天津市电力公司 | Adapter for GIS cable terminal test |
| CN112054382A (en) * | 2020-09-07 | 2020-12-08 | 广东电网有限责任公司广州供电局 | GIS cable T connects a section of thick bamboo circuit |
| CN114217181A (en) * | 2021-11-25 | 2022-03-22 | 广东电网有限责任公司广州供电局 | GIS cable sleeve test window |
| CN114217183A (en) * | 2021-11-25 | 2022-03-22 | 广东电网有限责任公司广州供电局 | GIS cable device |
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Effective date of registration: 20200925 Address after: 510620 Tianhe District, Guangzhou, Tianhe South Road, No. two, No. 2, No. Applicant after: Guangzhou Power Supply Bureau of Guangdong Power Grid Co.,Ltd. Address before: 510620 Tianhe District, Guangzhou, Tianhe South Road, No. two, No. 2, No. Applicant before: GUANGZHOU POWER SUPPLY Co.,Ltd. |