CN203415969U - Arc extinguishing and overvoltage protection apparatus for transformer station - Google Patents
Arc extinguishing and overvoltage protection apparatus for transformer station Download PDFInfo
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- CN203415969U CN203415969U CN201220649453.3U CN201220649453U CN203415969U CN 203415969 U CN203415969 U CN 203415969U CN 201220649453 U CN201220649453 U CN 201220649453U CN 203415969 U CN203415969 U CN 203415969U
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- overvoltage protection
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Abstract
The utility model provides an arc extinguishing and overvoltage protection apparatus for a transformer station. The apparatus comprises a digital controller, a voltage transformer PT, a phase-splitting control vacuum contactor JZ, a high-voltage current limiting fuse FUR and a three phase combined type overvoltage protection device TBP. The arc extinguishing and overvoltage protection apparatus is characterized in that the first set of auxiliary contacts of the phase-splitting control vacuum contactor JZ are respectively connected with three red indicating lamps of an on-site display, a second set of auxiliary contacts are in series connection and then connected with a green indicating lamp of the on-site display, and a third set of auxiliary contacts are respectively connected with two indicating lamps of the display of a remote control chamber. Damage to line equipment is reduced, maintenance cost is reduced, an obvious grounding phase is visually provided for the on-site work personnel, faults are determined and processed in time, rapidly and accurately, system grounding, arc extinguishing apparatus motion and other information are provided for remote monitor, and system, line and equipment safety is guaranteed.
Description
Technical field
The utility model relates to a kind of protective device, and especially a kind of extinguishing arc, overvoltage protection for transformer station, belong to transforming plant protecting device technical field.
Background technology
Conventionally the transformer institute on-load of transformer station is comparatively heavy, especially, as the also site of heavy-duty generator group, mostly adopts double-bus segmentation main wiring mode, is connected to the important outgoing of multichannel.These feeder lines connect region transformer station of subordinate, generating set with power overhead network or power cable, and power cable lays with crane span structure.In service, power overhead network fault is less, and power cable is because the easy heating of transition joint makes cable insulation thermal breakdown, in addition Damage to insulation in power cable layer, cause power cable single phase ground fault frequent, and the electric current arc light producing during single phase ground fault is very serious to the burn of cable machinery, not only increase cable fault repairing man-hour and labour intensity, and cause serious economic loss.For this reason, be provided with by digital controller, voltage transformer pt, divide phase control vacuum contactor JZ, high-voltage and current-limitation fuse assembly FUR, extinguishing arc and overvoltage protection that three phase combined over-voltage protector TBP forms, during with convenient non-direct ground system generation single phase ground fault, action by arc extinction cabinet becomes the stable direct ground connection of metallicity in station by the outside unsettled arc grounding of system, avoid the overvoltage of arc grounding electric current or generation to cause the injury to system equipment, once find external ground point and had a power failure after isolation, operate again reset.It is main electrical network that this device is mainly applicable to single-core power cables, the electrical network that power cable mixes with power overhead network.Because the combined floodgate stroke of the high-pressure vacuum contactor JZ in existing device is less, close a floodgate not obvious with non-combined floodgate phase mechanism indication, be unfavorable for which phase ground connection is staff's judgement system be intuitively, impact is accurately reported and fault investigation.Information or the signals such as action situation of arc-extinction device, can not inform remote control room in time in addition, causes staff when there is earth fault, can not grasp in time, judge whether arc-extinction device moves.Therefore, be necessary prior art to be improved.
Summary of the invention
For providing obvious Earth Phase to field personnel and remote control room monitor staff intuitively, to find out in time, process, to monitor, ensure electric power system, power circuit and device security, the utility model provides a kind of extinguishing arc and overvoltage protection.
The utility model provides a kind of like this transformer station extinguishing arc, overvoltage protection, comprise digital controller, voltage transformer pt, divide phase control vacuum contactor JZ, high-voltage and current-limitation fuse assembly FUR, three phase combined over-voltage protector TBP, the first group of auxiliary contact that it is characterized in that minute phase control vacuum contactor JZ are connected with three red leds of on-the-spot display respectively, after second group of auxiliary contact series connection, be connected with a green indicating lamp of on-the-spot display, the 3rd group of auxiliary contact are connected with two indicator lights of the display of remote control room respectively.
First group of described high-pressure vacuum contactor JZ often opened after auxiliary contact JZa1 series connection red led 1HD, JZb1 series connection red led 2HD, JZc1 series connection red led 3HD, access control power supply+KM in parallel and-KM between.Red led 1HD, 2HD, 3HD extinguish when system is normally moved, and light, and distinguish corresponding A, B, C three-phase when single phase ground fault appears in system.
Second group of normally closed auxiliary contact JZa2, JZb2 of described high-pressure vacuum contactor JZ, JZc2 series connection after connects with green indicating lamp LD, access control power supply+KM and-KM between.When green indicating lamp LD is bright, represent that high-pressure vacuum contactor JZ does not move, system is normally moved.When system generation single phase ground fault, no matter be which phase ground connection, green light extinguishes.
Often open after auxiliary contact JZa3 JZb3 JZc3 parallel connection for the 3rd group of described high-pressure vacuum contactor JZ, between power supply+XM and line 905 by secondary cable 701 access remote control room, and be connected with display screen by line 905, when there is single phase ground fault in system, no matter be which phase ground connection, all light display screen lamp D, prompting control room duty personnel's system generation single phase ground fault, arc-extinction device action, need carry out site inspection and arc-extinction device reset operation.
The utlity model has following advantages and effect: adopt such scheme, first can transfer the outside arc grounding of system to the direct ground connection of metallicity in transformer station, greatly reduce the damage of line facility, also greatly reduce the cost of overhaul; Secondly, can be intuitively for field personnel provides obvious Earth Phase so that field personnel in time, failure judgement quickly and accurately, report without delay, processing accident; In addition, can be to remote control room monitor staff prompt system ground connection, arc-extinction device action, need carry out site inspection and arc-extinction device reset operation, effective guarantee system, circuit and device security.
Accompanying drawing explanation
Fig. 1 is the electrical block diagram of the utility model;
Fig. 2 is first, second group contact winding diagram of Fig. 1 mesohigh vacuum contactor JZ;
Fig. 3 is the 3rd group of contact winding diagram of Fig. 1 mesohigh vacuum contactor JZ.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further.
Extinguishing arc, overvoltage protection for transformer station that the utility model provides; comprise digital controller (not marking in figure); and voltage transformer pt, minute phase control vacuum contactor JZ, high-voltage and current-limitation fuse assembly FUR, three phase combined over-voltage protector TBP, as Fig. 1.Wherein divide first group of auxiliary contact of phase control vacuum contactor JZ to be connected with three indicator lights of on-the-spot display respectively, after second group of auxiliary contact series connection, be connected with an indicator light of on-the-spot display, after the 3rd group of auxiliary contact parallel connection, be connected with two indicator lights of the display of remote control room, specifically:
First group of high-pressure vacuum contactor JZ often opened after auxiliary contact JZa1 series connection red led 1HD, JZb1 series connection red led 2HD, JZc1 series connection red led 3HD, access control power supply+KM in parallel and-KM between; Second group of normally closed auxiliary contact JZa2, JZb2 of high-pressure vacuum contactor JZ, JZc2 series connection after connects with green indicating lamp LD, access control power supply+KM and-KM between, as Fig. 2; Often open after auxiliary contact JZa3 JZb3 JZc3 parallel connection for second group of high-pressure vacuum contactor JZ, between power supply+XM and line 905 by secondary cable 701 access remote control room, and be connected with display screen by line 905, as Fig. 3.
Claims (4)
1.Yi Zhong is extinguishing arc, overvoltage protection for transformer station; comprise digital controller, voltage transformer pt; divide phase control vacuum contactor JZ, high-voltage and current-limitation fuse assembly FUR, three phase combined over-voltage protector TBP; the first group of auxiliary contact that it is characterized in that minute phase control vacuum contactor JZ are connected with three red leds of on-the-spot display respectively; after the series connection of second group of auxiliary contact, be connected with a green indicating lamp of on-the-spot display, the 3rd group of auxiliary contact are connected with two indicator lights of the display of remote control room respectively.
2. extinguishing arc, overvoltage protection for transformer station according to claim 1; it is characterized in that first group of described high-pressure vacuum contactor JZ often open after auxiliary contact JZa1 series connection red led 1HD, JZb1 series connection red led 2HD, JZc1 series connection red led 3HD, access control power supply+KM in parallel and-KM between.
3. extinguishing arc, overvoltage protection for transformer station according to claim 1; it is characterized in that connecting with green indicating lamp LD after second group of normally closed auxiliary contact JZa2, JZb2, the JZc2 series connection of described high-pressure vacuum contactor JZ, access control power supply+KM and-KM between.
4. extinguishing arc, overvoltage protection for transformer station according to claim 1; often open after auxiliary contact JZa3 JZb3 JZc3 parallel connection for the 3rd group that it is characterized in that described high-pressure vacuum contactor JZ; between power supply+XM and line (905) by secondary cable (701) access remote control room, and be connected with display screen by line (905).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220649453.3U CN203415969U (en) | 2012-12-01 | 2012-12-01 | Arc extinguishing and overvoltage protection apparatus for transformer station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220649453.3U CN203415969U (en) | 2012-12-01 | 2012-12-01 | Arc extinguishing and overvoltage protection apparatus for transformer station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203415969U true CN203415969U (en) | 2014-01-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220649453.3U Expired - Fee Related CN203415969U (en) | 2012-12-01 | 2012-12-01 | Arc extinguishing and overvoltage protection apparatus for transformer station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203415969U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104300525A (en) * | 2014-09-22 | 2015-01-21 | 合肥凯正电气技术有限公司 | Digital arc extinction restraining system |
-
2012
- 2012-12-01 CN CN201220649453.3U patent/CN203415969U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104300525A (en) * | 2014-09-22 | 2015-01-21 | 合肥凯正电气技术有限公司 | Digital arc extinction restraining system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140129 Termination date: 20171201 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |