CN202066948U - Undervoltage open/close experimental device for main circuit breaker of engine - Google Patents
Undervoltage open/close experimental device for main circuit breaker of engine Download PDFInfo
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- CN202066948U CN202066948U CN2011201849027U CN201120184902U CN202066948U CN 202066948 U CN202066948 U CN 202066948U CN 2011201849027 U CN2011201849027 U CN 2011201849027U CN 201120184902 U CN201120184902 U CN 201120184902U CN 202066948 U CN202066948 U CN 202066948U
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- circuit breaker
- main circuit
- locomotive
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Abstract
The utility model provides an undervoltage open/close experimental device for a main circuit breaker of an engine, solving the problem that in the prior art, when the engine runs in an undervoltage condition, electrical components are burnt and the engine is damaged. The open/close experimental device comprises an isolation transformator (201) and an auto-transformer (203), wherein the input end of the isolation transformator (201) is connected with an AC voltage source; and the auto-transformer (203) comprises an input end, a first output end (2031), and a second output end (2032). The input end of the auto-transformer (203) is connected to the output end of the isolation transformator (201); and both the first output end (2031) and the second output end (2032) are connected to an engine control unit (104). By adopting the technical scheme provided by the utility model, the function detection on the open/close state of the main circuit breaker can be carried out conveniently to improve the running safety of the engine.
Description
Technical field
The utility model belongs to the electric locomotive system, relates to under-voltage deciliter test unit of a kind of main circuit breaker of railway engine.
Background technology
The HXD3 locomotive adopts hands over the orthogonal drive technology, rated power 7500kW, the contact net normal working voltage is 17.5kV-31kV, deliver to locomotive main transformer by pantograph, main circuit breaker, the required various voltages of transformer output locomotive, by microcomputer network control system and logic control function, realize the running under power of locomotive under various operating modes.
If the locomotive contact net is under-voltage, virtual protection function imperfection, main circuit breaker can not normally open and close, and locomotive component meeting scaling loss causes the locomotive machine broken.According to locomotive delivery test rule request, the master was disconnected when net was pressed in greater than 17.5kV can be closed, and net is pressed in that the master is disconnected when being lower than 5kV should disconnect immediately, realizes the effective protection to locomotive.
General contact net is pressed the control of the section of being subjected to side; can not the actual drop test of carrying out, therefore the simulation net is pressed test, and the virtual protection function of check locomotive is particularly important; have only the virtual protection Function detection that locomotive is carried out before dispatching from the factory under the undervoltage condition to test, just can guarantee the performance of dispatching from the factory of locomotive.
In the prior art, exist not opening and closing state to main circuit breaker to detect and the locomotive operation security performance problem brought,, do not propose effective solution at present as yet for this problem.
The utility model content
Fundamental purpose of the present utility model provides under-voltage deciliter test unit of a kind of main circuit breaker of railway engine, to solve in the prior art not that opening and closing state to main circuit breaker detects and the locomotive operation security performance problem brought.
To achieve these goals, provide a kind of main circuit breaker of railway engine under-voltage deciliter test unit, and adopted following technical scheme.
Main circuit breaker of railway engine of the present utility model is under-voltage, and a deciliter test unit comprises that transformer group comprises: isolating transformer, and the input end of this isolating transformer connects alternating-current voltage source; Transformer group also comprises autotransformer, and this autotransformer comprises first output terminal and second output terminal, and the input end of autotransformer connects the output terminal of isolating transformer, and first output terminal all is connected with locomotive control unit with second output terminal.
Further, first output terminal all is connected with the second main variable flow cabinet with the first main variable flow cabinet of locomotive control unit, and second output terminal all is connected with the second main variable flow cabinet with the first main variable flow cabinet of locomotive control unit.
Further, the former limit rated voltage of isolating transformer is the 220V alternating voltage.
Further, the secondary rated voltage of isolating transformer is the 110V alternating voltage.
Further, the voltage output range of autotransformer is 0-110V.
According to the technical solution of the utility model, main circuit breaker is under-voltage, and deciliter test unit can simulate main circuit send to locomotive, control main open circuit closure or disconnection by the main variable flow cabinet, increase this pilot project and have the following advantages: the defencive function of 1. checking control circuit; 2. safely convenient, raising operation work efficiency; 3. improved the outgoing of locomotive.
Description of drawings
Figure of description is used to provide further understanding of the present utility model, constitutes the application's a part, and illustrative examples of the present utility model and explanation thereof are used to explain the utility model, do not constitute improper qualification of the present utility model.In the accompanying drawings:
Fig. 1 is the structural representation according to under-voltage deciliter test unit of the main circuit breaker of the utility model embodiment; And
Fig. 2 is the structural representation according to under-voltage deciliter test unit of the main circuit breaker of the another embodiment of the utility model.
Embodiment
Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.Describe the utility model below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
Fig. 1 is the structural representation according to under-voltage deciliter test unit of the main circuit breaker of the utility model embodiment, as shown in Figure 1, this main circuit breaker is under-voltage, and deciliter test unit mainly comprises: the transformer group that isolating transformer 201 and autotransformer 203 couplings constitute, transformer group connects the locomotive control unit 104 of locomotive, is used for the main circuit breaker deciliter function of locomotive control unit 104 is detected.
Can simulate locomotive under the high-voltage operation condition by under-voltage deciliter test unit of the main circuit breaker of present embodiment; by detecting the variation that net is pressed; main circuit breaker is implemented closed, disconnection action; prevent that locomotive from moving under under-voltage condition; locomotive is carried out safeguard protection, prevent that the scaling loss of electric component and machine are broken.
Preferably, transformer group comprises isolating transformer 201, and the input end of isolating transformer 201 connects alternating-current voltage source; Autotransformer 203 comprises first output terminal 2031 and second output terminal 2032, and the input end of autotransformer 203 connects the output terminal of isolating transformer 201, and first output terminal 2031 all is connected with locomotive control unit 104 with second output terminal 2032.
According to locomotive characteristic, when locomotive is worked for 25kV in the net pressure, by high-voltage mutual inductor time limit output control voltage 100V, no-load voltage ratio is 250, can calculate net like this and press when being 17.5kV, and high-voltage mutual inductor time limit output voltage is 70V, when net was pressed to 5kV, mutual inductor time limit output voltage was 20V.By external unit the 220V voltage transitions is become the voltage of 70V and 20V now; directly output to the inferior limit of locomotive voltage transformer (VT); can simulate locomotive like this in the duty of net pressure for 17.5kV and 5kV; according to the locomotive schematic diagram; the net of 70V and 20V presses signal to deliver to main variable flow cabinet inside respectively; carry out logic control; again CI (traction control unit) test switch SA75 is put " test " position; detect main circuit breaker closed and disconnected state by computer display, realize virtual protection control.
Because locomotive is in debug process, the negative pole of locomotive is a rail, reflux by rail, and the negative pole of the negative pole of 220V external power source and locomotive is inconsistent, using separately automatic coupling voltage regulator is can not regulation voltage, increase by a cover isolating transformer for this reason again and control, different control voltage can be outputed to the inferior limit of the voltage transformer (VT) of locomotive like this, guaranteed the operate as normal of control voltage.
Alternatively, control (isolation) transformer model is BK-300, and the input voltage grade is that AC220V, output voltage grade are AC110V; The autotransformer model is TDGC2-0.5, and input voltage is that 0-250V, output voltage are 0-110V.
Fig. 2 is the concrete structure synoptic diagram according to under-voltage deciliter test unit of the main circuit breaker of the another embodiment of the utility model.
Preferably, referring to shown in Figure 2, first output terminal 2031 of autotransformer 203 all is connected with the second main variable flow cabinet 2053 with the first main variable flow cabinet 2051 of locomotive control unit 104, and second output terminal 2032 of autotransformer 203 all is connected with the second main variable flow cabinet 2053 with the first main variable flow cabinet 2051 of locomotive control unit 104.
More specifically, give isolating transformer 201 input 220V external voltages, isolating transformer 201 output 110V, regulate output voltage by autotransformer, when output voltage reaches 70V, pressing by computer display display simulation net is 17.5kV, simultaneously, send into net for the first main variable flow cabinet 2051 and the second main variable flow cabinet 2053 by 100, No. 92 lines and press signal, make the main circuit breaker closure by logic control, continue to regulate autotransformer 203 output voltages, net pressure value can increase gradually, illustrates that the main circuit breaker closure function is normal.
After the closed test of main circuit breaker finishes, regulating autotransformer 203 output voltages also reduces gradually, when output voltage reaches 20V, pressing by computer display display simulation net is 5kV, simultaneously, sending into net for the first main variable flow cabinet 2051 and the second main variable flow cabinet 2053 by 100, No. 92 lines presses signal, by logic control main circuit breaker is disconnected, illustrate that main circuit breaker disjunction function is normal.
By above-mentioned test procedure, can check the logic function of main variable flow cabinet whether to meet the requirements, whether main circuit breaker closure, break function be normal.
Preferably, the former limit rated voltage of isolating transformer 201 is the 220V alternating voltage, and the secondary rated voltage is the 110V alternating voltage.
Preferably, the voltage output range of autotransformer 203 is 0-110V.
Obviously, those skilled in the art should be understood that, this test unit is used by isolating transformer 201 and autotransformer 203, autotransformer 203 regulation voltage arbitrarily in the 0-110V scope, 100 of voltage and the locomotive circuit of output is connected with 92 lines that (voltage between No. 100 and 92 lines is the locomotive original edge voltage outputs to inferior limit through voltage transformer (VT) detection voltage, whether the net pressure that detects locomotive meets the requirements), locomotive is under the low pressure situation like this, mutual inductor time limit can controlled voltage, and should control voltage signal and give the main variable flow cabinet, by logic control main breaking opened, the detection of off status function has improved the application safety performance of locomotive like this.
The above is a preferred embodiment of the present utility model only, is not limited to the utility model, and for a person skilled in the art, the utility model can have various changes and variation.All within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (5)
1. under-voltage deciliter test unit of a main circuit breaker of railway engine is characterized in that, comprising:
Isolating transformer (201), input end connects alternating-current voltage source; And
Autotransformer (203), comprise input end, first output terminal (2031) and second output terminal (2032), the input end of described autotransformer (203) connects the output terminal of described isolating transformer (201), and described first output terminal (2031) all is connected with described locomotive control unit (104) with described second output terminal (2032).
2. under-voltage deciliter test unit of main circuit breaker of railway engine according to claim 1, it is characterized in that, described first output terminal (2031) all is connected with the second main variable flow cabinet (2052) with the first main variable flow cabinet (2051) of described locomotive control unit (104), and described second output terminal (2032) all is connected with the second main variable flow cabinet (2052) with the first main variable flow cabinet (2051) of described locomotive control unit (104).
3. under-voltage deciliter test unit of main circuit breaker of railway engine according to claim 2 is characterized in that, the former limit rated voltage of described isolating transformer (201) is the 220V alternating voltage.
4. under-voltage deciliter test unit of main circuit breaker of railway engine according to claim 3 is characterized in that the secondary rated voltage of described isolating transformer (201) is the 110V alternating voltage.
5. under-voltage deciliter test unit of main circuit breaker of railway engine according to claim 4 is characterized in that the voltage output range of described autotransformer (203) is 0-110V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201849027U CN202066948U (en) | 2011-06-02 | 2011-06-02 | Undervoltage open/close experimental device for main circuit breaker of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201849027U CN202066948U (en) | 2011-06-02 | 2011-06-02 | Undervoltage open/close experimental device for main circuit breaker of engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202066948U true CN202066948U (en) | 2011-12-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201849027U Expired - Fee Related CN202066948U (en) | 2011-06-02 | 2011-06-02 | Undervoltage open/close experimental device for main circuit breaker of engine |
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| Country | Link |
|---|---|
| CN (1) | CN202066948U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102508191A (en) * | 2011-12-23 | 2012-06-20 | 中国北车集团大连机车车辆有限公司 | Device and method for detecting fault of high voltage transformer of electric locomotive |
-
2011
- 2011-06-02 CN CN2011201849027U patent/CN202066948U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102508191A (en) * | 2011-12-23 | 2012-06-20 | 中国北车集团大连机车车辆有限公司 | Device and method for detecting fault of high voltage transformer of electric locomotive |
| CN102508191B (en) * | 2011-12-23 | 2015-04-01 | 中国北车集团大连机车车辆有限公司 | Device and method for detecting fault of high voltage transformer of electric locomotive |
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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: 20111207 Termination date: 20170602 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |