CN202676902U - On-line monitoring device for high-voltage potential transformer of railway electric locomotive - Google Patents
On-line monitoring device for high-voltage potential transformer of railway electric locomotive Download PDFInfo
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- CN202676902U CN202676902U CN 201220188601 CN201220188601U CN202676902U CN 202676902 U CN202676902 U CN 202676902U CN 201220188601 CN201220188601 CN 201220188601 CN 201220188601 U CN201220188601 U CN 201220188601U CN 202676902 U CN202676902 U CN 202676902U
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Abstract
The utility model relates to an on-line monitoring device for a high-voltage potential transformer of a railway electric locomotive. The device mainly comprises a control cabinet; a single-chip microcomputer in the control cabinet; an A/D converter connected with the single-chip microcomputer through signal lines; a first voltage detector, a second voltage detector and a current detector which are connected with the A/D converter through signal lines; an intermediate transformer connected with the second voltage detector through a first transformer signal line and a second transformer signal line; a first wire and a second wire which are connected with the intermediate transformer; a first current detection line and a second current detection line which are connected with the voltage detector; a normal signal output line, an alarm signal output line, an early-warning signal output line and a locomotive protection instruction signal line which are connected with the control cabinet; and a communication interface. The device can not only detect the high-voltage potential transformer, but also realize on-line real-time monitoring.
Description
Technical field
The utility model relates to a kind of signal supervisory instrument, specifically belongs to the on-Line Monitor Device for railway electric locomotive or electric motor car high voltage potential transformer.
Background technology
High voltage potential transformer is the important electric component of railway electric locomotive or electric motor car group, and the quality of its work and workmanship and the environmental concerns of working are very close.The operation troubles statistical study of electric locomotive or electric motor car group shows that the failure rate of high voltage potential transformer is higher.The railway electrification power supply trouble that is caused by the fault of high voltage potential transformer also happens occasionally.Yet the high voltage potential transformer of at present electric locomotive or electric motor car group is without pick-up unit, and the rear locomotive that only breaks down is out of service, and this normal order that stops not only to have affected transportation by railroad also can cause the accident (such as catenary cut off) sometimes.Railway adopts electric locomotive and the electric motor car group of AC Drive that this high voltage potential transformer all has been installed at present, must adopt effective technological means to detect high voltage potential transformer, to guarantee the safe operation of train.
The utility model content
The purpose of this utility model is to solve at present in railway electric locomotive or electric motor car group without real time monitoring equipment, the deficiency of the counter-measure that should take opportunity appears and in the fault that the driver and conductor can't control high voltage potential transformer, providing a kind of can not only detect high voltage potential transformer, and realized on-line real time monitoring, in time adopting an effective measure, the driver and conductor avoids the on-Line Monitor Device that is used for the railway electric locomotive high voltage potential transformer of accident generation.
Realize the technical measures of above-mentioned purpose:
The on-Line Monitor Device that is used for the railway electric locomotive high voltage potential transformer; it is: it is contained in the single-chip microcomputer in the switch board mainly by switch board; the A/D converter that is connected by signal wire with single-chip microcomputer; the voltage-level detector one and voltage-level detector two and the current detector that are connected respectively by signal wire with A/D converter; the intermediate transformer that is connected by transformer signal wire one and transformer signal wire two with voltage-level detector two; the wire one that connects on the intermediate transformer and wire two; the current detecting line one that connects on the current detector and current detecting line two; the current sensor that is connected with current detecting line one and current detecting line two; the voltage detecting line one and the voltage detecting line two that connect voltage-level detector one; the normal signal output line that is connected with switch board and alerting signal output line and early warning signal output line and locomotive protection command signal line; communication interface forms.
It is characterized in that: information memory is housed in switch board.
Characteristics of the present utility model are: can not only detect high voltage potential transformer, and realize on-line real time monitoring, avoid the security of operation accident that effective assurance is provided for the driver and conductor can in time adopt an effective measure.
Description of drawings
Fig. 1 is structural representation of the present utility model
Fig. 2 is work synoptic diagram of the present utility model
Among the figure: 1-switch board, 2-single-chip microcomputer, 3-A/D converter; 4-voltage-level detector, one, 5-voltage-level detector, two, 6-current detector; 7-intermediate transformer, 8-signal wire, 9-transformer signal wire one; 10-transformer signal wire, two, 11-wire, one, 12-wire two; 13-current detecting line, one, 14-current detecting line, two, 15-voltage detecting line one; 16-voltage detecting line two; 17-normal signal output line, 18-alerting signal output line, 19-early warning signal output line; 20-locomotive protection command signal line; 21-communication interface, 22-information memory, 23-high voltage potential transformer; 24-tractive transformer, 25-current sensor.
Embodiment
Be described further below in conjunction with accompanying drawing:
The on-Line Monitor Device that is used for the railway electric locomotive high voltage potential transformer: at switch board 1 interior single-chip microcomputer 2, A/D converter 3, voltage-level detector 1, voltage-level detector 25, current detector 6 and the intermediate transformer 7 installed respectively; Signal wire 8 is connected single-chip microcomputer 2 with A/D converter 3, A/D converter 3 is connected with voltage-level detector 1, voltage-level detector 25 and current detector 6 respectively by signal wire 8; Intermediate transformer 7 is connected in voltage-level detector 25 by transformer signal wire 1 and transformer signal wire 2 10, connects wire 1 and wire 2 12 at intermediate transformer 7; Connect current detecting line 1 and current detecting line 2 14 at current detector 6, current detecting line 1 and current detecting line 2 14 are connected with current sensor 25; Connect voltage detecting line 1 and voltage detecting line 2 16 at voltage-level detector 1; Connect respectively normal signal output line 17, alerting signal output line 18, early warning signal output line 19 and locomotive protection command signal line 20 on the single-chip microcomputer 2 in switch board 1; Single-chip microcomputer 2 in communication interface 21 and the switch board 1 is connected.At switch board 1 interior mount message reservoir 22, information memory 22 is connected with single-chip microcomputer 2 by signal wire 8 in addition.
Use principle
The utility model is installed in the suitable place of railway electric locomotive or electric motor car group, to respectively: the voltage detecting line 1 that connects on the voltage-level detector 1 and voltage detecting line 2 16 are connected with arbitrary winding corresponding lead of high voltage potential transformer limit winding 23 last time respectively, the corresponding lead of arbitrary winding is connected on the wire 1 that connects on the intermediate transformer 7 and wire 2 12 and the tractive transformer 24, and the wire of output terminal of the current sensor on the current detecting line 1 that connects on the current detector 6 and current detecting line 2 14 and the former limit of the high voltage potential transformer winding is connected; The normal signal output line 17, alerting signal output line 18, early warning signal output line 19 and the locomotive protection command signal line 20 that connect respectively on the single-chip microcomputer 2 in the switch board 1 are connected with the operating platform of driver operation chamber respectively.
When electric locomotive or the work of electric motor car group, when main circuit breaker is closed, the utility model triggering work: the inferior polygonal voltage effective value of the high voltage potential transformer 23 of sampling first and the voltage effective value of 24 a certain windings in limit of tractive transformer, then the difference that compares the two, the absolute value of its difference is as the control threshold values; When in locomotive operation, detect the poor lower limit greater than controlling value of voltage effective value of inferior polygonal voltage effective value and 24 a certain windings in limit of tractive transformer of high voltage potential transformer 23 when the utility model, but during less than higher limit, when the primary current effective value of sampling high voltage potential transformer 23 is also unusual, at this moment, early warning signal output line 19 sends information indicating to the driver, and the driver then can in time dispose according to the rules; When the utility model detect the voltage effective value of the inferior polygonal voltage effective value of high voltage potential transformer 23 and 24 a certain windings in limit of tractive transformer poor greater than controlling value upper in limited time, at this moment, alerting signal output line 18 output prohibition information prompting drivers, and by the control system output protection instruction of locomotive protection command signal line 20 to locomotive, the driver then can in time dispose according to the rules; The voltage effective value difference that detects the inferior polygonal voltage effective value of high voltage potential transformer 23 and 24 a certain windings in limit of tractive transformer when the utility model is lower than the control threshold values lower in limited time, normal signal output line 17 shows normal information, can safe operation.
Above embodiment is only for exemplifying.
Claims (2)
1. the on-Line Monitor Device that is used for the railway electric locomotive high voltage potential transformer; it is characterized in that: it is contained in the single-chip microcomputer in the switch board mainly by switch board; the A/D converter that is connected by signal wire with single-chip microcomputer; the voltage-level detector one and voltage-level detector two and the current detector that are connected respectively by signal wire with A/D converter; the intermediate transformer that is connected by transformer signal wire one and transformer signal wire two with voltage-level detector two; the wire one that connects on the intermediate transformer and wire two; the current detecting line one that connects on the current detector and current detecting line two; the current sensor that is connected with current detecting line one and current detecting line two; the voltage detecting line one that is connected with voltage-level detector one and voltage detecting line two; the normal signal output line that is connected with switch board and alerting signal output line and early warning signal output line and locomotive protection command signal line; communication interface forms.
2. the on-Line Monitor Device for the railway electric locomotive high voltage potential transformer as claimed in claim 1 is characterized in that: information memory is housed in switch board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220188601 CN202676902U (en) | 2012-04-28 | 2012-04-28 | On-line monitoring device for high-voltage potential transformer of railway electric locomotive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220188601 CN202676902U (en) | 2012-04-28 | 2012-04-28 | On-line monitoring device for high-voltage potential transformer of railway electric locomotive |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202676902U true CN202676902U (en) | 2013-01-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220188601 Expired - Fee Related CN202676902U (en) | 2012-04-28 | 2012-04-28 | On-line monitoring device for high-voltage potential transformer of railway electric locomotive |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202676902U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103983886A (en) * | 2014-05-08 | 2014-08-13 | 国家电网公司 | Electric leakage detection system applied to rural power distribution network field |
| CN106054100A (en) * | 2016-06-28 | 2016-10-26 | 李彦吉 | Traction substation busbar potential transformer on-line monitoring automatic apparatus |
-
2012
- 2012-04-28 CN CN 201220188601 patent/CN202676902U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103983886A (en) * | 2014-05-08 | 2014-08-13 | 国家电网公司 | Electric leakage detection system applied to rural power distribution network field |
| CN106054100A (en) * | 2016-06-28 | 2016-10-26 | 李彦吉 | Traction substation busbar potential transformer on-line monitoring automatic apparatus |
| CN106054100B (en) * | 2016-06-28 | 2019-03-01 | 李彦吉 | Traction substation bus-bar potential transformer monitors automatic device on-line |
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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: 20130116 Termination date: 20170428 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |