CN206727474U - Traction substation pressure resistant type isolating transformer case - Google Patents
Traction substation pressure resistant type isolating transformer case Download PDFInfo
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- CN206727474U CN206727474U CN201720568978.7U CN201720568978U CN206727474U CN 206727474 U CN206727474 U CN 206727474U CN 201720568978 U CN201720568978 U CN 201720568978U CN 206727474 U CN206727474 U CN 206727474U
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- pressure resistant
- resistant type
- isolating transformer
- fuse
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Abstract
Traction substation pressure resistant type isolating transformer case,By casing,Pressure resistant type isolating transformer,Fuse,Surge Protector is formed,Fuse,Surge Protector respectively has identical two,Pressure resistant type isolating transformer,Fuse,Surge Protector is arranged in casing,The primary side power input both ends of pressure resistant type isolating transformer are connected with the power supply output both ends of traction substation low-voltage distribution cabinet by wire respectively,Two Surge Protector one end are connected with the primary side both ends of pressure resistant type isolating transformer by wire respectively,Two Surge Protector other ends are connected with casing by wire respectively,Two fuse one end are connected with pressure resistant type isolating transformer secondary power supply output both ends by wire respectively,Two fuse other ends are connected with electric component power input both ends in the operating mechanism box of electrification railway contact net electric power system electric isolating switch by wire respectively.This new damage for preventing overvoltage to equipment in traction substation low-voltage distribution cabinet, the prospect having had.
Description
Technical field
The matching used apparatus field of Traction Substation of Electric Railway is the utility model is related to, particularly a kind of traction becomes
Electric institute's pressure resistant type isolating transformer case.
Background technology
In electric railway, the power supply facilities of traction substation is electric power machine through the contact net electric power system above railway
Car, EMUs etc. play power supply function；In operation, if the contact net electric power system above railway breaks down, electric power system
The transport of rail segment section will be caused to stop after interruption of power supply, in economy, can politically bring strong influence.Existing skill
Art, it is quick after shortening fault coverage, failure in order to reduce the time that electric power system is stopped transport after contact net electric power system breaks down
Restore electricity, using site on the supply lines of the contact net electric power system above railway, at split-phase, the spy such as major long tunnel both ends
The electric isolating switch being provided with is put in positioning.Effect has two kinds of situations, first, being broken down in a certain section of contact net electric power system
After can be by operating electric isolating switch separating brake, purpose that fault section and normal reach are isolated；Second, work as traction substation
Or during supply lines device fails, can by operate electric isolating switch close a floodgate, contact net system formed over-zone feeding or
Roundabout power supply, ensure that train can pass through.
In existing traction substation, the electric isolating switch of contact net electric power system, the work of its switch motion are controlled
Power supply is directly provided by traction substation low-voltage distribution cabinet, and traction substation low-voltage distribution cabinet passes through low-voltage cable circuit and electricity
Electric component power input connection in the operating mechanism box of dynamic disconnecting switch；Traction substation low-voltage distribution cabinet and electronic isolation
Supply path length between the operating mechanism box of switch, the position set by electric isolating switch and traction substation institute are in place
Put distance difference and length is different, usual distance is in 30m between 2000m.
The working method of working power is provided by existing traction substation by low-voltage distribution cabinet directly to electric isolating switch
Influence, in real work, when power frequency short circuit occurs for contact net electric power system, power frequency short circuit current can be along contact net electric power system
Pillar enter ground, pillar grounding body, pillar, electric isolating switch operating mechanism box shell on form very high power frequency counterattack
Overvoltage, the overvoltage unearthed low-voltage cable circuit into shell easily from the shell of electric disconnector operating mechanism case
Electric discharge, causes insulation breakdown, and then, overvoltage is introduced low-voltage distribution cabinet by low-voltage cable, causes the equipment in low-voltage distribution cabinet
Damage, while may further result in the traction substation being connected with low-voltage distribution cabinet and control protection equipment and dc source to set
Standby damage.
Also a kind of situation, in operation, when the wire for contact net electric power system of being struck by lightning, traveling wave mistake can be produced on wire
Voltage, after insulator arc-over of the wire along contact net electric power system or breakdown insulator, thunder-strike current meeting edge connects the overvoltage
The pillar of net-fault electric power system enters ground；Or after the pillar of thunderbolt contact net electric power system, thunder-strike current can also power along contact net
The pillar of system enters ground；Above two thunderbolt situation, it can operate machine in pillar, the electric isolating switch of contact net electric power system
Very high back flashover overvoltage is formed on the shell of structure case, the overvoltage also very likely can operate machine by electric isolating switch
Low-voltage cable line discharge of the shell of structure case into shell, causes insulation breakdown, and then, low-voltage cable introduces overvoltage low
Power distribution cabinet is pressed, causes the damage of equipment in low-voltage distribution cabinet, while the traction being connected with low-voltage distribution cabinet may be further resulted in
The damage of protection equipment and DC power supply device is controlled in electric substation.
In summary, either power frequency short circuit, the wire of thunderbolt contact net electric power system, thunderbolt contact net electric power system
Pillar, pillar and its rise of grounding body current potential of contact net electric power system may be caused, so as to cause electric isolating switch to be grasped
Make shell low-voltage cable electric discharge into shell of mechanism case, and then, cause overvoltage to introduce traction substation by low-voltage cable
In low-voltage distribution cabinet, the equipment in low-voltage distribution cabinet and the device damage being connected with it are caused, thus, there is provided one kind occurred
During voltage, can effectively it prevent to equipment in traction substation low-voltage distribution cabinet, and damaged with low-voltage distribution cabinet associated devices
Facility seems particularly necessary.
The content of the invention
In order to overcome existing traction substation, the electric isolating switch of contact net electric power system, its switch motion are controlled
Working power be directly to be provided by traction substation low-voltage distribution cabinet, thus bring easily the drawbacks of breaking down, this practicality is newly
Type provides a kind of between traction substation low-voltage distribution cabinet and the electric isolating switch of contact net electric power system, is mounted with electricity
Gas interrupter, in work, can effectively it prevent because being set caused by contact net electric power system failure in traction substation low-voltage distribution cabinet
It is standby, and the traction substation pressure resistant type isolating transformer case with the damage of low-voltage distribution cabinet associated devices.
Technical scheme is used by the utility model solves its technical problem：
Traction substation pressure resistant type isolating transformer case, it is characterised in that by casing, pressure resistant type isolating transformer, fusing
Device, Surge Protector are formed, and fuse, Surge Protector respectively have identical two, pressure resistant type isolating transformer, fuse, wave
Surge protector is arranged in casing, and the primary side power input both ends of pressure resistant type isolating transformer are matched somebody with somebody with traction substation low pressure respectively
The power supply output both ends of electric cabinet are connected by wire, two Surge Protector one end primary side with pressure resistant type isolating transformer respectively
Both ends are connected by wire, and two Surge Protector other ends are connected with casing by wire respectively, two fuse one end point
Do not connected with pressure resistant type isolating transformer secondary power supply output both ends by wire, two fuse other ends are respectively and electrified
Electric component power input both ends are connected by wire in the operating mechanism box of railway contact line electric power system electric isolating switch.
The casing is metal material.
The primary and secondary side of the pressure resistant type isolating transformer is insulated using high insulating materials.
The fuse is high-tension fuse, and Surge Protector is low pressure Surge Protector.
After the pressure resistant type isolating transformer, fuse, Surge Protector are arranged in casing, pressure resistant type isolation transformation
Device, fuse, the Surge Protector other end and casing insulation.
During the utility model beneficial effect：During normal use, traction substation low-voltage distribution cabinet output power supply enter it is resistance to
After die mould isolating transformer primary side, pressure resistant type isolating transformer secondary produces induced voltage and is separately input into electricity through two fuses
Electric component power input both ends in the operating mechanism box of dynamic disconnecting switch, pressure resistant type isolating transformer primary and secondary side are in electricity
Gas isolation；Can normal through operation electric isolating switch operating mechanism box, so as to control electric isolating switch open and
Close action.In actual use, when power frequency short circuit, thunderbolt contact net electric power system occur for the contact net electric power system of electric railway
Wire, be struck by lightning contact net electric power system pillar, cause contact net electric power system pillar and its grounding body current potential rise, electricity
The operating mechanism box shell of dynamic disconnecting switch low-voltage cable into shell is discharged, and overvoltage is entered by cable through two fuses
Before pressure resistant type isolating transformer secondary, fuse can fuse, and prevent overvoltage from entering pressure resistant type isolating transformer secondary；Such as
Fruit fuse does not fuse, due to being in isolation, pressure resistant type isolation between the secondary and primary side of pressure resistant type isolating transformer
Transformer is insulated using high insulating materials, and the insulation between pressure resistant type isolating transformer secondary and primary side is difficult to by overvoltage
Breakdown, so, overvoltage is effectively prevented to reach the primary side of pressure resistant type isolating transformer；Even if the extreme feelings of some overvoltage
The primary side of pressure resistant type isolating transformer is entered under condition, in the presence of two Surge Protectors, Surge Protector also can be by mistake
Voltage is released into ground, reaches the purpose for eliminating overvoltage.The utility model effectively prevent overvoltage through electricity by triple protection
The operating mechanism box of dynamic disconnecting switch enters in traction substation low-voltage distribution cabinet, to being set in traction substation low-voltage distribution cabinet
It is standby, and the damage of protection equipment and DC power supply device is controlled in the traction substation connected with low-voltage distribution cabinet, based on
On, so the application prospect that the utility model has had.
Brief description of the drawings
The utility model is described further below in conjunction with drawings and examples.
Fig. 1 is the low-voltage distribution cabinet of the utility model and traction substation, the electric isolating switch of contact net electric power system
Operating mechanism box, contact net electric power system pillar between structural representation.
Embodiment
Shown in Fig. 1, traction substation pressure resistant type isolating transformer case, by casing 1, pressure resistant type isolating transformer 2, fusing
Device 3, Surge Protector 4 are formed, and fuse 3, Surge Protector 4 respectively have identical two, pressure resistant type isolating transformer 2, fusing
Device 3, Surge Protector 4 be arranged on casing 1 in, the primary side 2-1 power inputs both ends of pressure resistant type isolating transformer respectively and traction
Electric substation's low-voltage distribution cabinet 5 power supply output both ends connected by wire, two one end of Surge Protector 4 respectively with pressure resistant type every
Primary side 2-1 both ends from transformer are connected by wire, and two other ends of Surge Protector 4 are connected with casing 1 by wire respectively
Connect, two one end of fuse 3 are connected with pressure resistant type isolating transformer secondary 2-2 power supplys output both ends by wire respectively, two
The other end of fuse 3 respectively with electrical part in the operating mechanism box 6 of electrification railway contact net electric power system electric isolating switch
Part power input both ends are connected by wire, and casing 1 passes through wired earth.Casing 1 is metal material.Pressure resistant type isolating transformer
2 primary and secondary side is insulated using high insulating materials.Fuse 3 is high-tension fuse, and Surge Protector 4 is low pressure surge
Protector.After pressure resistant type isolating transformer 2, fuse 3, Surge Protector 4 are arranged in casing 1, pressure resistant type isolating transformer
2nd, fuse 3, the other end of Surge Protector 4 and casing 4 insulate.
Shown in Fig. 1, during the utility model normal use, power supply that traction substation low-voltage distribution cabinet 5 exports enters resistance to
After die mould isolating transformer primary side 2-1, pressure resistant type isolating transformer secondary 2-2 produces induced-current and distinguished through two fuses 3
Input to electric component power input both ends in the operating mechanism box 6 of electric isolating switch, pressure resistant type isolating transformer primary side 2-1
Electrical isolation state is in secondary 2-2；So, can be normal through the operating mechanism box 6 of operation electric isolating switch, so as to control
The open and close action of electric isolating switch processed.In actual use, when the contact net electric power system generation power frequency of electric railway is short
Road, the wire for contact net electric power system of being struck by lightning, the pillar 7 for contact net electric power system of being struck by lightning, cause the branch of contact net electric power system
When post 7 and its grounding body current potential raise, the shell of electric disconnector operating mechanism case 7 low-voltage cable can discharge into shell,
Before overvoltage enters the secondary of pressure resistant type isolating transformer 2 by cable through two fuses 3, fuse 3 can fuse, and prevent
Overvoltage enters pressure resistant type isolating transformer 2, plays the first protective effect again；If fuse 3 does not fuse, due to pressure-resistant
Isolation is between the secondary 2-2 and primary side 2-1 of type isolating transformer 2, pressure resistant type isolating transformer 2 itself is using high absolutely
Edge material is insulated, and the insulation between pressure resistant type isolating transformer secondary 2-2 and primary side 2-1 is difficult to by over-voltage breakdown, this
Sample, effectively prevent overvoltage to reach the primary side 2-1 of pressure resistant type isolating transformer, play the second protective effect again；Actual conditions
In, under extreme case, even if some overvoltage enters the primary side 2-1 of pressure resistant type isolating transformer, protected in two surges
Protect in the presence of device 4, overvoltage also can be released into ground by Surge Protector 4 through casing 1, thoroughly reach the mesh for eliminating overvoltage
, play triple protection effect.The utility model effectively prevent overvoltage by triple protection and be grasped through electric isolating switch
Make mechanism case 6 to enter in traction substation low-voltage distribution cabinet 5, to equipment in traction substation low-voltage distribution cabinet 5, and and low pressure
The damage of control protection equipment and DC power supply device in the traction substation that power distribution cabinet 5 connects, so the utility model has
Good application prospect.
The present embodiment is the utility model preferred embodiments, all former in the utility model not to limit the utility model
Any modification, equivalent substitution and improvements etc. are done in the range of then, should be included within the scope of protection of the utility model.
Claims (5)
1. traction substation pressure resistant type isolating transformer case, it is characterised in that by casing, pressure resistant type isolating transformer, fuse,
Surge Protector is formed, and fuse, Surge Protector respectively have identical two, and pressure resistant type isolating transformer, fuse, surge are protected
Device is protected to be arranged in casing, the primary side power input both ends of pressure resistant type isolating transformer respectively with traction substation low-voltage distribution cabinet
Power supply output both ends connected by wire, two Surge Protector one end primary side both ends with pressure resistant type isolating transformer respectively
Connected by wire, two Surge Protector other ends are connected with casing by wire respectively, two fuse one end respectively and
Pressure resistant type isolating transformer secondary power supply output both ends are connected by wire, and two fuse other ends are respectively and electric railway
Electric component power input both ends are connected by wire in the operating mechanism box of contact net electric power system electric isolating switch.
2. traction substation pressure resistant type isolating transformer case according to claim 1, it is characterised in that casing is metal material
Matter.
3. traction substation pressure resistant type isolating transformer case according to claim 1, it is characterised in that pressure resistant type isolation becomes
The primary and secondary side of depressor is insulated using high insulating materials.
4. traction substation pressure resistant type isolating transformer case according to claim 1, it is characterised in that fuse is high pressure
Fuse, Surge Protector are low pressure Surge Protectors.
5. traction substation pressure resistant type isolating transformer case according to claim 1, it is characterised in that pressure resistant type isolation becomes
After depressor, fuse, Surge Protector are arranged in casing, pressure resistant type isolating transformer, fuse, the Surge Protector other end
Insulated with casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720568978.7U CN206727474U (en) | 2017-05-22 | 2017-05-22 | Traction substation pressure resistant type isolating transformer case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720568978.7U CN206727474U (en) | 2017-05-22 | 2017-05-22 | Traction substation pressure resistant type isolating transformer case |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206727474U true CN206727474U (en) | 2017-12-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720568978.7U Active CN206727474U (en) | 2017-05-22 | 2017-05-22 | Traction substation pressure resistant type isolating transformer case |
Country Status (1)
| Country | Link |
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| CN (1) | CN206727474U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107086464A (en) * | 2017-05-22 | 2017-08-22 | 四川艾德瑞电气有限公司 | Traction substation pressure resistant type isolating transformer case |
| CN108964000A (en) * | 2018-06-29 | 2018-12-07 | 成都交大许继电气有限责任公司 | Integrated Automation System for Traction Substation anti-lightning system |
-
2017
- 2017-05-22 CN CN201720568978.7U patent/CN206727474U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107086464A (en) * | 2017-05-22 | 2017-08-22 | 四川艾德瑞电气有限公司 | Traction substation pressure resistant type isolating transformer case |
| CN108964000A (en) * | 2018-06-29 | 2018-12-07 | 成都交大许继电气有限责任公司 | Integrated Automation System for Traction Substation anti-lightning system |
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