CN201466677U - Non-electric quantity protection remote tripping device of transformer - Google Patents
Non-electric quantity protection remote tripping device of transformer Download PDFInfo
- Publication number
- CN201466677U CN201466677U CN2009200867567U CN200920086756U CN201466677U CN 201466677 U CN201466677 U CN 201466677U CN 2009200867567 U CN2009200867567 U CN 2009200867567U CN 200920086756 U CN200920086756 U CN 200920086756U CN 201466677 U CN201466677 U CN 201466677U
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- protective device
- line transformer
- electrical quantity
- optical fiber
- transformer group
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- 239000013307 optical fiber Substances 0.000 claims abstract description 22
- 238000004891 communication Methods 0.000 claims abstract description 13
- 230000003287 optical effect Effects 0.000 claims abstract description 9
- 230000001681 protective effect Effects 0.000 claims description 31
- 230000009191 jumping Effects 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 230000037396 body weight Effects 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 206010053615 Thermal burn Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000004870 electrical engineering Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 235000015927 pasta Nutrition 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model relates to a non-electric quantity protection remote tripping device of a transformer, which comprises a transformer non-electric quantity protecting device, a local line transformer group protecting device, a remote end line transformer group protecting device, an optical isolator and an optical fiber, wherein the optical isolator is connected with the local line transformer group and the optical fiber and used for converting a communication message which is transmitted by the local line transformer group protecting device and contains a non-electric quantity tripping signal into an optical signal and transferring the optical signal to the remote end line transformer group protecting device by the optical fiber; and the remote end line transformer group protecting device receives the communication message, recognizes the non-electric quantity tripping signal and transmits a remote end tripping command. The non-electric quantity protection realizes remote trip by an optical fiber passage, thereby widening the application range of the protection and extending the function of the protection device.
Description
Technical field
The utility model belongs to the electrical engineering technology, particularly relates to the design that transformer non electrical quantity protection (comprising gas, temperature, pressure release, cold control full cut-off etc.) realizes the transfer trip method improvement.
Background technology
The protection of transformer non electrical quantity comprises gas, temperature, pressure release, cold control full cut-off etc., mainly is meant protection, and wherein light protection acts on signal, and heavily protection acts on tripping operation.Protection can be reacted any fault in the oil tank of transformer, crosses thermal burn, pasta reduction, turn-to-turn short circuit etc. as iron core, constitute the main protection of transformer jointly with differential protection, and the two can not the phase trans-substitution.
At present, the protection of the non electrical quantity of transformer mainly is to act on the transformer body to signal or trip, and as realizing transfer trip, then connects transformer high-voltage switch and nodes such as watt machine relay or temperature by secondary cable.This occupation mode is the most general, and defective is that distance can not be too far away, can only be in 300 meters effectively, distance is oversize easily cause signal attenuation, secondary cable to be short-circuited or the possibility that breaks bigger, cause the protection misoperation.And mainly be meant the small capacity transformer of 10kV electric pressure, then seldom use the transfer trip mode of non electrical quantity at the high-power transformer of 110kV and above electric pressure.
Realize the longitudinal differential protection system that mainly contains of transfer trip; vertically be tied with the protective device of certain communication port exactly the power transmission line two ends; the electric parameters (electric current, power direction etc.) of each end is transferred to the opposite end, compares the two ends electric parameters, realize the defencive function of circuit.Because non electrical quantities such as temperature, gas protection action might not be followed electric quantity change, so can not relatively differentiate through the local protection device.
Patent 93202887 " dual-tone multifrequency remote tripping signal transmission interface device " overcomes the deficiency of existing electric power high frequency remote tripping device, has that antijamming capability is strong, high reliability features; Patent 86106300 " multi-functional super-high frequency protection " is utilized four control signals, and the realization extra high voltage network is protected fast; Patent 200420119141 " the track traffic bilateral jumping of direct current control cable " adopts DC power supply control, many cables that twisted-pair feeder formed two ends connection jumping; At least two system controlled by computer connection of patent 94200801 " interlock tripper for DC traction power-supply system " are jumped device, lay respectively at adjacent two stations, a shared communication channel, and collection analysis our station switch state signal, and through the adjacent station of transmission control switch trip.Above-mentioned Patent data does not relate to the content of transformer non electrical quantity protection transfer trip aspect, and existing transfer trip passage only limits to twisted-pair cable, hf channel etc.
The utility model content
Technical problem to be solved in the utility model provides a kind of realization transformer non electrical quantity protection remote tripping device; realize the function of transformer non electrical quantity protection transfer trip; antijamming capability is strong; the reliability height, but also be fit to be applied to trip protection to the far-end high-power transformer of 110kV and above electric pressure.
For solving the problems of the technologies described above, technical problem to be solved in the utility model is a kind of realization transformer non electrical quantity protection remote tripping device that proposes, comprise transformer non electrical quantity protective device, local line transformer group protective device, distal line transformer group protective device, described transformer non electrical quantity protective device sends the non electrical quantity trip signal to described local line transformer group protective device, it is characterized in that, also comprise optical isolator, optical fiber, described optical isolator connects described local line transformer group and optical fiber, be used for that described local line transformer group protective device is sent the communication packet that comprises the non electrical quantity trip signal and be converted to light signal, be delivered to described distal line transformer group protective device by described optical fiber; Described distal line transformer group protective device receives communication packet and identifies the non electrical quantity trip signal, sends the far-end trip command.
As preferably, described optical fiber is two, and described two optical fiber are worked simultaneously, each other stand-by heat.
Beneficial effect: the protection of the utility model non electrical quantity realizes transfer trip by optical-fibre channel, has enlarged the range of application of this protection, the function that has expanded this protective device.In addition, it realizes non electrical quantity protection transfer trip based on the redundant optical fiber passage, and two optical-fibre channels can automatically switch, and compare with passages such as cable or high frequencies, have the reliability height, and transmission speed is fast, the advantage that antijamming capability is strong.
Description of drawings
Below in conjunction with the drawings and specific embodiments the technical solution of the utility model is further described in detail.
Fig. 1 is the structural representation of a specific embodiment of the utility model.
Embodiment
As shown in Figure 1, the line transformer group protective device that directly connects two ends with two optical fiber.The fiber type (multimode or single mode and wavelength) that uses depends on the distance between the protective device, and communication speed can be selected 64kbps or 56kbps, adopts the BFOC/2.5 optical fiber connector, is commonly referred to as " ST " connector.Fiber type is selected with the relation of transmission range as shown in the table:
| Fiber type | The 850nm multimode | The 1300nm multimode | The 1300nm single mode | The 1550nm single mode |
| Transmission range | 1km | 33.7km | 67.5km | 90km |
According to the actual motion requirement; in the present embodiment; the heavy gas such as this body weight gas that collect of transformer non electrical quantity protective device or have load-carrying gas to be set to the triggering signal amount of the pattern of tripping just in the non electrical quantity protection, the protection of other non electrical quantity is set to the output signal amount.This body weight gas, have the load-carrying Gas Signal through or after gate logic handles, if be " 1 ", the generation trip signal be described, the one tunnel triggers local 10KV side trips, and imports local line transformer group protective device simultaneously.Local line transformer group protective device, distal line transformer group protective device all adopt the differential microprocessor MICOM of the big spill current of transformer P541.Local MICOM P541 is provided with the DDT sign in the communication packet that mails to distal line transformer group protective device, when trip signal produces, DDT is masked as " 1 ".Optical isolator is converted to light signal to communication packet on the local MICOM P541 through being installed in; be sent to far-end MICOM P541 by optical fiber; in a single day far-end MICOM P541 identifies the DDT sign " 1 " in the communication packet; then distal line transformer group protective device will start the output node of user's appointment; and directly send trip command to the relay of jumping forever of line-breaker, start the circuit breaker trip of 110KV side.Distal line transformer group protective device also provides the indication of direct jumping, and local line transformer group protective device also sends local indication.
Two optical-fibre channels of present embodiment are stand-by heat each other.Under normal circumstances the data of two passages all are used to the function calculating of protective device, and another passage can work on when a passage breaks down.Correct in order to guarantee to protect the connection of communication, the relay in the same protection system must be in same group of addresses.Protect for non electrical quantity,, then must select group of addresses A for use at the other end so if select group of addresses A for use at local terminal.
At the two ends protective device with optical fiber on the correct connection basis, utilize the jumping passage far away of this two ends protective device, adopt directly connection jumping mode, realize transformer non electrical quantity protection transfer trip. in order to prevent to disturb, the trip signal of non electrical quantity protection keeps the pulse duration of 0.02s in local transformer side; And, protect output node can fully start the relay of jumping forever of far-end switch in order to ensure non electrical quantity at far-end, this signal is exported time-delay 100ms.
It should be noted last that, above embodiment is only unrestricted in order to the explanation the technical solution of the utility model, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not breaking away from the spirit and scope of technical solutions of the utility model, it all should be encompassed in the middle of the claim scope of the present utility model.
Claims (2)
1. a transformer non electrical quantity is protected remote tripping device, comprise transformer non electrical quantity protective device, local line transformer group protective device, distal line transformer group protective device, described transformer non electrical quantity protective device sends the non electrical quantity trip signal to described local line transformer group protective device, it is characterized in that, also comprise optical isolator, optical fiber, described optical isolator connects described local line transformer group and optical fiber, be used for that described local line transformer group protective device is sent the communication packet that comprises the non electrical quantity trip signal and be converted to light signal, be delivered to described distal line transformer group protective device by described optical fiber; Described distal line transformer group protective device receives communication packet and identifies the non electrical quantity trip signal, sends the far-end trip command.
2. transformer non electrical quantity protection remote tripping device according to claim 1, described optical fiber is two, described two optical fiber are worked simultaneously, each other stand-by heat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200867567U CN201466677U (en) | 2009-06-19 | 2009-06-19 | Non-electric quantity protection remote tripping device of transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200867567U CN201466677U (en) | 2009-06-19 | 2009-06-19 | Non-electric quantity protection remote tripping device of transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201466677U true CN201466677U (en) | 2010-05-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200867567U Expired - Fee Related CN201466677U (en) | 2009-06-19 | 2009-06-19 | Non-electric quantity protection remote tripping device of transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201466677U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102403695A (en) * | 2011-11-22 | 2012-04-04 | 国网运行有限公司秦皇岛超高压管理处 | Transformer non-electric quantity protection device and protection method |
| CN102684153A (en) * | 2012-05-15 | 2012-09-19 | 攀钢集团西昌钢钒有限公司 | Device for controlling linkage of circuit breakers of line transformer bank |
| CN104821548A (en) * | 2015-05-19 | 2015-08-05 | 神华集团有限责任公司 | Circuit transformer bank non-electricity protection device and system |
-
2009
- 2009-06-19 CN CN2009200867567U patent/CN201466677U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102403695A (en) * | 2011-11-22 | 2012-04-04 | 国网运行有限公司秦皇岛超高压管理处 | Transformer non-electric quantity protection device and protection method |
| CN102684153A (en) * | 2012-05-15 | 2012-09-19 | 攀钢集团西昌钢钒有限公司 | Device for controlling linkage of circuit breakers of line transformer bank |
| CN104821548A (en) * | 2015-05-19 | 2015-08-05 | 神华集团有限责任公司 | Circuit transformer bank non-electricity protection device and system |
| CN104821548B (en) * | 2015-05-19 | 2019-01-08 | 神华集团有限责任公司 | Line transformer group non-electricity protecting device and 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: 20100512 Termination date: 20150619 |
|
| EXPY | Termination of patent right or utility model |