CN203941271U - The intelligent on-Line Monitor Device of transformer station's changeover contact - Google Patents
The intelligent on-Line Monitor Device of transformer station's changeover contact Download PDFInfo
- Publication number
- CN203941271U CN203941271U CN201420195064.7U CN201420195064U CN203941271U CN 203941271 U CN203941271 U CN 203941271U CN 201420195064 U CN201420195064 U CN 201420195064U CN 203941271 U CN203941271 U CN 203941271U
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- Prior art keywords
- changeover contact
- diode
- transformer station
- intelligent
- monitor device
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- 238000005070 sampling Methods 0.000 claims abstract description 31
- 230000002159 abnormal effect Effects 0.000 claims abstract description 9
- 230000005856 abnormality Effects 0.000 claims abstract description 6
- 230000008878 coupling Effects 0.000 claims description 20
- 238000010168 coupling process Methods 0.000 claims description 20
- 238000005859 coupling reaction Methods 0.000 claims description 20
- 238000002955 isolation Methods 0.000 claims description 20
- 230000003287 optical effect Effects 0.000 claims description 20
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 4
- 229910052710 silicon Inorganic materials 0.000 claims description 4
- 239000010703 silicon Substances 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 abstract description 12
- 238000007689 inspection Methods 0.000 abstract description 5
- 230000007547 defect Effects 0.000 abstract description 4
- 238000011835 investigation Methods 0.000 abstract description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The utility model discloses the intelligent on-Line Monitor Device of a kind of transformer station changeover contact, comprise sampling module for obtaining changeover contact make-and-break signal, for identify described make-and-break signal and make show the abnormal order of changeover contact control module, for receiving described changeover contact, extremely order and show the display module of changeover contact abnormality, changeover contact is connected to described sampling module, described sampling module is connected to described control module, and described control module is connected to described display module.The intelligent on-Line Monitor Device of transformer station described in the utility model changeover contact can be used for assisting relay protection maintainer easily accurately to locate easily inspection to 110kV bus PT voltage switching auxiliary contact Abnormal Deformation situation; and the disconnecting link position contact displacement situation at bus differential protection interval; the defect investigation accurate positioning of transformer station's disconnecting link changeover contact; staff's speed of patrolling is fast, and work efficiency is extremely high.
Description
Technical field
The utility model relates to power system transformer substation secondary device technical field, especially relates to the intelligent on-Line Monitor Device of a kind of transformer station changeover contact.
Background technology
The normality that power transformation operation is staff to bus operation is processed operation, and due to the needs of power transformation operation mode and maintenance, very frequent to bus operation, 110kV bus PT or 220kV bus PT disconnecting link switch very frequent.At present, in substation operation operation, PT disconnecting link changeover contact fault is more, is nearly all that disconnecting link switches not in place or disconnecting link problem with low quality, concrete has: changeover contact corrosion causes loose contact, disconnecting link machinery stuck, and the phenomenon such as each DC loop of the transformer station causing is abnormal.
As processed not in time, will cause each transforming plant DC loop arranged side by side, when serious, can produce anti-power transmission phenomenon, there is the risk of expansion accident; Moreover; disconnecting link position, the interval contact that take in 110KV and 220KV bus differential protection loop is due to corrosion; loose contact and cause displacement; the switching effect of substation PT disconnecting link switching auxiliary contact directly has influence on safety and the personal safety of equipment, is the difficulties that we Protection Technology personnel run into, because DC loop is more; disconnecting link is more; it is more difficult that maintainer finds out at scene out of order disconnecting link changeover contact, length consuming time, and work efficiency is extremely low.
Summary of the invention
Based on this, the utility model is to overcome the defect of prior art, and a kind of abnormal conditions that can be convenient to detect in real time substation bus bar PT disconnecting link changeover contact are provided, the intelligent on-Line Monitor Device of transformer station's changeover contact that security performance is high, stability is good.
Its technical scheme is as follows: the intelligent on-Line Monitor Device of a kind of transformer station changeover contact, comprise sampling module for obtaining changeover contact make-and-break signal, for identify described make-and-break signal and make show the abnormal order of changeover contact control module, for receiving described changeover contact, extremely order and show the display module of changeover contact abnormality, changeover contact is connected to described sampling module, described sampling module is connected to described control module, and described control module is connected to described display module.
Below further technical scheme is described:
Preferably, described sampling module comprises diode circuit, the optical coupling isolation circuit of connecting with described changeover contact, and described diode circuit is connected with the input end of described optical coupling isolation circuit, and the output terminal of described optical coupling isolation circuit is connected to described control module.
Preferably, described diode circuit comprises a diode or two more parallels and/or the diode being connected in series.
Preferably, described diode circuit comprises four diodes, and wherein after two diodes in parallels, the diode in parallel with two other connected.
Preferably, between described optical coupling isolation circuit and described diode circuit, be connected with current-limiting resistance.
Preferably, described optical coupling isolation circuit comprises light emitting diode, the phototriode coordinating with described light emitting diode, the grounded emitter of described phototriode, the collector of described phototriode is connected to power supply by detecting resistance, and described detection resistance is connected with described control module.
Preferably, described diode is silicon diode.
Preferably, described changeover contact is a plurality of, and a plurality of changeover contacts are all connected with sampling module, and a plurality of described sampling modules are connected to control module.
Below the principle of aforementioned techniques scheme, effect etc. are described:
1, in the direct current branch of disconnecting link changeover contact place, sampling module is set, sampling module obtains the displacement situation of disconnecting link, and disconnecting link displacement signal is sent to control module, control module recognizes this displacement signal, by display module, shows to inform that staff's disconnecting link changeover contact exists fault.The intelligent on-Line Monitor Device of transformer station described in the utility model changeover contact can be used for assisting relay protection maintainer easily accurately to locate easily inspection to 110kV bus PT voltage switching auxiliary contact Abnormal Deformation situation; and the disconnecting link position contact displacement situation at bus differential protection interval; the defect investigation accurate positioning of transformer station's disconnecting link changeover contact; staff's speed of patrolling is fast, and work efficiency is extremely high.
2, sampling module adopts diode circuit, diode has forward conduction characteristic and pressure drop, if disconnecting link changeover contact is without displacement, be that disconnecting link changeover contact is normally connected, diode is conducting, in diode current flow, can produce pressure drop, for example, silicon diode can produce the forward voltage drop of 0.7V after conducting, by the forward voltage drop of diode, drive optical coupling isolation circuit, optical coupling isolation circuit passes to control module by signal, by disconnecting link changeover contact, whether abnormality shows by display module control module, sampling module circuit structure is extremely simple, with low cost, be convenient to install.
Accompanying drawing explanation
Fig. 1 shows the intelligent on-Line Monitor Device inspection of transformer station's changeover contact structure described in the utility model embodiment;
Fig. 2 shows the structure of the intelligent on-Line Monitor Device sampling module of transformer station's changeover contact described in the utility model embodiment.
Description of reference numerals:
10, changeover contact, 20, sampling module, 21, diode circuit, 22, optical coupling isolation circuit, 30, control module, 40, display module.
Embodiment
Below embodiment of the present utility model is elaborated:
As shown in Figure 1, it shows the intelligent on-Line Monitor Device inspection of transformer station's changeover contact structure described in the utility model embodiment, the intelligent on-Line Monitor Device of transformer station described in the utility model changeover contact, comprise for obtaining the sampling module 20 of changeover contact 10 make-and-break signals, for identifying described make-and-break signal and making the control module 30 that shows changeover contact 10 abnormal orders, for receiving the display module 40 that changeover contact 10 abnormality were ordered and shown to described changeover contact 10 extremely, changeover contact 10 is connected to described sampling module 20, described sampling module 20 is connected to described control module 30, described control module 30 is connected to described display module 40.
In disconnecting link changeover contact 10 place direct current branch, sampling module 20 is set, sampling module 20 obtains the displacement situation of disconnecting link, and disconnecting link displacement signal is sent to control module 30, control module 30 recognizes this displacement signal, by display module 40, shows to inform that staff's disconnecting link changeover contact 10 exists fault.The intelligent on-Line Monitor Device of transformer station described in the utility model changeover contact can be used for assisting relay protection maintainer easily accurately to locate easily inspection to 110kV, 220kV bus PT voltage transitions contact Abnormal Deformation situation; and the disconnecting link position contact displacement situation at bus differential protection interval; the defect investigation accurate positioning of transformer station's disconnecting link changeover contact 10; staff's speed of patrolling is fast, and work efficiency is extremely high.
As shown in Figure 2, in the utility model embodiment, described sampling module 20 comprises diode circuit 21, the optical coupling isolation circuit 22 of connecting with described changeover contact 10, described diode circuit 21 is connected with the input end of described optical coupling isolation circuit 22, the output terminal of described optical coupling isolation circuit 22 is connected to described control module 30, and described diode circuit 21 comprises a diode D
2or two more parallels and/or the diode D that is connected in series
2.In an embodiment, described diode circuit comprises four diode D therein
2, two diode D wherein
2the diode D in parallel with two other after in parallel
2series connection, as one of them diode D
2break down, with the diode D that breaks down
2diode D in parallel
2still can make DC loop normally work, system is more stable.Sampling module 20 adopts diode circuits 21, and diode has forward conduction characteristic and pressure drop, if disconnecting link changeover contact 10 without displacement, disconnecting link changeover contact 10 is normally connected, diode D
2conducting thereupon, at diode D
2in the time of conducting, can produce pressure drop, for example, silicon diode can produce the forward voltage drop of 0.7V after conducting, by the forward voltage drop of diode, drives optical coupling isolation circuit 22, optical coupling isolation circuit 22 passes to control module 30 by signal, by disconnecting link changeover contact 10, whether abnormality shows by display module 40 control module 30, and visible, sampling module 20 circuit structures are extremely simple, with low cost, be convenient to install.
In an embodiment, between described optical coupling isolation circuit 22 and described diode circuit 21, be connected with current-limiting resistance R therein
1.
In an embodiment, described optical coupling isolation circuit 22 comprises light emitting diode D therein
1, with described light emitting diode D
1the phototriode V coordinating
1, described phototriode V
1grounded emitter, described phototriode V
1collector by detecting resistance R
2be connected to power supply, described detection resistance R
2be connected with described control module 30.
In an embodiment, described changeover contact 10 is a plurality of therein, and a plurality of changeover contacts 10 are all connected with sampling module 20, and a plurality of described sampling modules 20 are connected to control module 30.
The above embodiment has only expressed embodiment of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.
Claims (8)
- The intelligent on-Line Monitor Device of 1.Yi Zhong transformer station changeover contact, it is characterized in that, comprise sampling module for obtaining changeover contact make-and-break signal, for identify described make-and-break signal and make show the abnormal order of changeover contact control module, for receiving described changeover contact, extremely order and show the display module of changeover contact abnormality, changeover contact is connected to described sampling module, described sampling module is connected to described control module, and described control module is connected to described display module.
- 2. the intelligent on-Line Monitor Device of transformer station according to claim 1 changeover contact, it is characterized in that, described sampling module comprises diode circuit, the optical coupling isolation circuit of connecting with described changeover contact, described diode circuit is connected with the input end of described optical coupling isolation circuit, and the output terminal of described optical coupling isolation circuit is connected to described control module.
- 3. the intelligent on-Line Monitor Device of transformer station according to claim 2 changeover contact, is characterized in that, described diode circuit comprises a diode or two more parallels and/or the diode being connected in series.
- 4. the intelligent on-Line Monitor Device of transformer station according to claim 3 changeover contact, is characterized in that, described diode circuit comprises four diodes, and wherein after two diodes in parallels, the diode in parallel with two other connected.
- 5. according to the intelligent on-Line Monitor Device of transformer station's changeover contact described in claim 2 to 4 any one, it is characterized in that, between described optical coupling isolation circuit and described diode circuit, be connected with current-limiting resistance.
- 6. the intelligent on-Line Monitor Device of transformer station according to claim 5 changeover contact, it is characterized in that, described optical coupling isolation circuit comprises light emitting diode, the phototriode coordinating with described light emitting diode, the grounded emitter of described phototriode, the collector of described phototriode is connected to power supply by detecting resistance, and described detection resistance is connected with described control module.
- 7. the intelligent on-Line Monitor Device of transformer station according to claim 5 changeover contact, is characterized in that, described diode is silicon diode.
- 8. the intelligent on-Line Monitor Device of transformer station according to claim 5 changeover contact, is characterized in that, described changeover contact is a plurality of, and a plurality of changeover contacts are all connected with sampling module, and a plurality of described sampling modules are connected to control module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420195064.7U CN203941271U (en) | 2014-04-21 | 2014-04-21 | The intelligent on-Line Monitor Device of transformer station's changeover contact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420195064.7U CN203941271U (en) | 2014-04-21 | 2014-04-21 | The intelligent on-Line Monitor Device of transformer station's changeover contact |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203941271U true CN203941271U (en) | 2014-11-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420195064.7U Expired - Lifetime CN203941271U (en) | 2014-04-21 | 2014-04-21 | The intelligent on-Line Monitor Device of transformer station's changeover contact |
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| CN (1) | CN203941271U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110505741A (en) * | 2019-09-20 | 2019-11-26 | 江苏海湾电气科技有限公司 | A kind of method and device detecting naval light state |
-
2014
- 2014-04-21 CN CN201420195064.7U patent/CN203941271U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110505741A (en) * | 2019-09-20 | 2019-11-26 | 江苏海湾电气科技有限公司 | A kind of method and device detecting naval light state |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141112 |